ТРУБКА ДЛЯ ВВЕДЕНИЯ В ОБЪЕКТ

... 1. Трубка для введения в объект, причем трубка (1) содержит трубкообразную оплетку (2) изготовленную из электропроводящих нитей (3), которая отличается тем, что концы (4) нитей (3) расположены со сдвигом в продольном направлении трубки (1).2. Трубка по п. 1, где концы (4) нитей расположены со сдвигом в области (5) с расположением со сдвигом, где область (5) с расположением со сдвигом имеет длину в диапазоне от 2 см до 10 см.3. Трубка по п. 1, где концевые секции по меньшей мере некоторых нитей (103) пересекают трубку (101) в направлении к центру трубки (101).4. Трубка по п. 3, где концы (104), по меньшей мере некоторых нитей (103) расположены в или рядом с центром трубки (101).5. Трубка по п. 1, где оплетка расположена внутри материала трубки, ограждая внутренний просвет (207) трубки (201).6. Трубка по п. 5, где концы (204) по меньшей мере некоторых нитей (203) расположены рядом с внутренним просветом (207).7. Трубка по п. 5, где концы (304) по меньшей мере некоторых из нитей (303) вставлены ...

ВРЕМЕННЫЙ МОЧЕВОЙ КАТЕТЕР

FILE CATHETER/CAIR-LOCK WITH LARGE DIAMETER

TENSION REGULATION FOR STENTEINFÜHRSYSTEM

BALLOON CATHETER WITH SWIMMING REINFORCEMENT

Kink resistant peel away medical sheath

Devices and methods for providing a kink resistant peel away sheath are disclosed. One device includes a sheath for insertion into a vasculature of a patient. The sheath (300) comprises a sheath body (105) having an outer surface, a longitudinal axis and a lumen (108) formed therethrough. The sheath body (105) comprises an inner layer (110) arranged about the longitudinal axis, an outer layer (120) coaxially arranged with the inner layer (110), and a support layer (130) positioned between the inner and outer layers (110,120), wherein the inner, outer and support layers (110, 120, 130) are laminated together to form the sheath body (105). The sheath (300) also comprises at least one shear line (144) positioned beneath the outer surface of the sheath body (105), and configured to facilitate the longitudinal separation of the sheath body (105) along the at least one shear line (144).

Self-assembly derived co-continuous materials for biomedical devices

A method and material composition of a highly porous material that is applied to an object, such as a biomaterial implant and biomedical device, is described. The method involves forming a bijel mixture that is exposed to at least an outer surface of an object. Thereafter, a precursor is added to the bijel mixture to allow the precursor to transport into a particular liquid phase of the bijel mixture. After at least partial transport, the precursor-containing liquid phase of the bijel mixture is solidifed to form a bijel-templated material (BTM) that is bonded to a surface of the object.

Over-the-needle catheter sleeve

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having a sleeve configured thereon. The catheter includes a body having an outer diameter. The body also includes a proximal end and a distal end and defines a lumen extending from the proximal end to the distal end. A needle is configured within the lumen of the catheter and extends from the proximal end to the distal end. The sleeve is configured around a portion of the outer diameter of the catheter that passes through an insertion site of the catheter. Further, the sleeve includes a length extending from a first end to a second end and is configured to prevent the catheter from collapsing along the length of the sleeve. In addition, the sleeve is configured to prevent leakage from the insertion site of the catheter.

STENT DELIVERY SYSTEM WITH RADIALLY STABILIZED CATHETER

A catheter for a medical apparatus comprising: an inner catheter (100) having a distal end and a proximal end; and a sheath (202) of polymer material, having a distal end and a proximal end, disposed around at least a portion of the inner catheter, said sheath being retractable in a proximal direction relative to the inner catheter to perform an actuating step at the distal end of the system, by the application of an endwise tensile stress to the proximal end of the sheath, characterized in that: the inner catheter resists the associated radially-inward contraction of the sheath which arises from the applied tensile stress during said actuating step.

GUIDE CATHETER WITH REMOVABLE SUPPORT

Catheters such as guide catheters can be configured for delivery of devices to vasculature portions such as intracranial spaces while retaining a desired level of flexibility. A catheter having an elongate shaft can include removable support means that can provide column support to the elongate shaft. The elongate shaft can include anchoring means that releasably secure the removable support means. The catheter can be deployed within a patient's vasculature, followed by deploying the removable support means.

MEDICAL DEVICE WITH COLLAPSE-RESISTANT LINER AND METHOD OF MAKING SAME

A medical device for guiding through anatomy, such as a catheter or guidewire, with a tubular body that has been slotted to enhance bending flexibility, and a polymer liner with an anti-collapsing structure, and a method of making a medical device with a kink-resistant corrugated tubular member and an anti- collapsing structure. Anti collapsing structures may be helical or annular, and may be wire, such as ribbon wire, grooves in the liner, corrugations, or a braid. Liners may be bonded to the anti~collapsing structure, or may have two layers, with the anti-collapsing structure between the layers. Corrugations may be formed between sections of the anti-collapsing 'structure with heat, pressure, stretching, compression, a mold, or a combination thereof, and may extend inward or outward. Shape or wall thickness may vary along the length to provide a varying bending stiffness. Slots may be formed in groups of two, three, or more, and adjacent groups may be rotated about the axis forming a ...

LARGE DIAMETER DELIVERY CATHETER/SHEATH

A large diameter, flexible, kink-resistant, delivery catheter or sheath (30) for percutaneous delivery of a contained and implantable medical device in the vasculature of a patient. The delivery catheter or sheath includes a reinforcement such as a flat wire coil (23) with uniform spacing between the turns, which is compression fitted about an inner, lubricous PTFE tube (32). The delivery catheter or sheath further includes an outer tube (31) of a heat formable polyamide material which is heat formed and compressed through the spaces between the turns of the wire coil to mechanically connect to a roughened outer surface (36) of the inner tube. A polymeric radiopaque marker tube (40) may be positioned at the distal end of the coil and between the inner and outer tubes for radiographic visualization. A side port (38) may also be positioned thereat for the infusion of contrast media.

NONCIRCULAR INNER LUMEN GUIDING CATHETER WITH ASSISTED VARIABLE SUPPORT

A noncircular inner lumen guiding catheter with assisted variable support has an inner wall defining a noncircular cross-sectional shaped lumen for use in delivery of multiple microcatheters or other devices for treatment of neurovascular defects, such as for treatment of aneurysms. The noncircular inner lumen guiding catheter with assisted variable support includes torque transmittal guidance walls that are flexible linearly but not circumferentially, and that are neither collapsible nor kinkable. The noncircular shaped cross-section of the inner lumen may extend along the entire length of the catheter or a portion thereof, including distal or proximal.

MEDICAL DEVICE WITH REDUCED OCCLUSION

A medical device, such as a catheter, for use in medical applications includes an elongated body (26) with a tip having an opening (32) at one end. The catheter tip is configured to inhibit occluding and to permit outflow of fluid medication from the catheter to ensure proper delivery of the medication to an intended target area. The tip of the catheter is constructed to have at least one beveled end surface (42) to assist insertion into the patient and a radial thickness (49) at a critical bend point substantially equal to the radius (41) of the fluid path (36) and at a location spaced from the end a distance substantially equal to the radius of the fluid path to inhibit folding and occluding the catheter during use.

CATHETER ADAPTER WITH DISTAL INNER DIAMETER CURVATURE PROVIDING KINK RESISTANCE

Catheter adapters and vascular access device including catheter adapters are discloses. The catheter adapter tip opening (34) has an internal curvature defining a tapered region in the lower portion, but not the upper portion, to support a flexured portion of the catheter to prevent kinking and occlusion.

OVER-THE-NEEDLE CATHETER INSERT

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having a structural member configured therein. The OTN catheter assembly includes a catheter coaxially mounted onto a needle. In one embodiment, the structural member includes a coil insert that is embedded into an interior wall of the catheter, thereby preventing kinking of the catheter when being inserted within a patient. In another embodiment, the structural member may be a separate and removable coil insert that is inserted into the catheter after the OTN catheter assembly has been placed in a targeted site within the patient and the needle is removed. In a further embodiment, the structural member may be a separate and removable solid insert having a blunt distal end that is inserted into the catheter after the OTN catheter assembly has been placed in a targeted site within the patient and the needle is removed. Thus, the structural member is capable of advancing the catheter to one or more targeted sites ...

OVER-THE-NEEDLE CATHETER INSERT

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having a structural member configured therein. The OTN catheter assembly includes a catheter coaxially mounted onto a needle. In one embodiment, the structural member includes a coil insert that is embedded into an interior wall of the catheter, thereby preventing kinking of the catheter when being inserted within a patient. In another embodiment, the structural member may be a separate and removable coil insert that is inserted into the catheter after the OTN catheter assembly has been placed in a targeted site within the patient and the needle is removed. In a further embodiment, the structural member may be a separate and removable solid insert having a blunt distal end that is inserted into the catheter after the OTN catheter assembly has been placed in a targeted site within the patient and the needle is removed. Thus, the structural member is capable of advancing the catheter to one or more targeted sites ...

DISTAL ACCESS ASPIRATION GUIDE CATHETER

Distal access aspiration guide catheter system and methods for delivering implantable devices, catheters, or substances in or near and/or restoring flow through body lumens, such as blood vessel lumens are described. A Distal access aspiration guide catheter having a proximal, medial, and distal possessing high flexibility, high resistance to kinking and a large lumen to wall thickness ratio.

Balloon catheter

The present invention relates to a balloon catheter. The invention comprises: a first shaft; an expandable balloon which is attached to the front end portion of the first shaft; an expandable lumen which is formed inside the first shaft and to which a liquid required for expanding the balloon is provided; a second shaft which extends from the front end portion of the first shaft to which the balloon is attached and has a wire hole through which a guide wire passes; and a guide wire lumen, which is formed inside the second shaft and through which the guide wire passes. According to the invention, the first and second shafts are coaxially connected and the expandable lumen and the guide wire lumen are respectively formed in each shaft in order to reduce the overall diameter of the shaft, thereby facilitating surgery and improving pushability.

APPARATUS FOR THE INTRODUCTION AND MANIPULATION OF MULTIPLE TELESCOPING CATHETERS

FLEXIBLE METALLIC CANNULA INFUSION SET

A cannula housing assembly for an infusion set is disclosed. Thecannula housing assembly includes a cannula housing and a cannula extending distally from the cannula housing. The cannula may be constructed from a shape memoryalloy or a superelastic alloy. A method of inserting a cannula constructed from a shape memory alloy is also disclosed.

DISTAL ACCESS ASPIRATION GUIDE CATHEDER

Distal access aspiration guide catheter system and methods for delivering implantable devices, catheters, or substances in or near and/or restoring flow through body lumens, such as blood vessel lumens are described. A Distal access aspiration guide catheter having a proximal, medial, and distal possessing high flexibility, high resistance to kinking and a large lumen to wall thickness ratio.

CATHETER

The disclosed catheter has an annular structure wherein a distal tubular member (4) and a proximal tubular member (5) are coupled. Within the distal tubular member (4), tubes (41, 42), into which wires for operation are inserted, are provided at the outer periphery of the tubular member (4). Also, within the proximal tubular member (5), an inner cylinder (5b), into which wires for operation are inserted, is provided at the center portion of the cross-section of the tubular member (5). An intermediate member (100) is installed between the inner cylinder (5b) and the tubes (41, 42). One of the tubes (41) and the inner cylinder (5b) are connected by a pathway (112) provided to the intermediate member (100). Also, the other tube (42) and the inner cylinder (5b) are connected by another pathway (114) provided to the intermediate member (100). The pathway (112) and the other pathway (114) are both inclined from the inner cylinder (5b) towards the tubes (41, 42) in a manner so as to approach the ...

DRUG DELIVERY BALLOON APPARATUS

A drug delivery balloon apparatus 100, where the drug delivery balloon apparatus comprises: at least two lumens, a first lumen 114 and a second lumen 116, a balloon inflation port 102, a guidewire port 110, a drug delivery port 108, an occlusion balloon 104, a drug delivery balloon 106 having an outer surface with a plurality of grooves 140, where the occlusion balloon is disposed between the drug delivery balloon and the balloon inflation port, and the occlusion and drug delivery balloons are in communication with the first lumen, one or more drug delivery channels 120 extending the length of the second lumen, and one or more drug delivery ducts 146 extending from the one or more drug delivery channels to an exterior surface of the second lumen.

METHOD OF MANUFACTURING MEDICAL DEVICES AND SUCH A MEDICAL DEVICE

Medical devices and related methods are disclosed. In some embodiments, a method of manufacturing a medical device (10) or a medical device component includes contacting a non-fluid first member (12) and a second member (14), the first member comprising a first polymer and an alignable material different from the first polymer; aligning the alignable material; and bonding the first and second members together.

DISTAL WIRE STOP

A method and apparatus for releasably securing a wire guide to an elongate medical device for introduction into a work site with the bodily lumen of a patient. An elongate engagement member (89) is configured to engage the wire guide (11) while it is coupled to the elongate medical device (77) and is configured so as to prevent relative movement between the wire guide and the elongate medical device.

CATHETER

A catheter that prevents excessive concentration of stress while providing sufficient flexibility to a distal end portion of the catheter, even when the catheter is inserted and curved in patient's a blood vessel. Thus, breakage of the catheter at a radiopaque marker is prevented/reduced. The catheter includes a catheter tube and the radiopaque marker, which is disposed in the catheter tube. The radiopaque marker is fixed in the catheter so that a gap is provided between the radiopaque marker and the catheter tube in a radial direction of the catheter tube.

CORONARY SINUS MITRAL VALVE ANNULOPLASTY PROCEDURE AND CORONARY ARTERY AND MYOCARDIAL PROTECTION DEVICE

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve. An annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation. A protective device can be placed between the annuloplasty device and an underlying coronary artery to inhibit compression of the underlying coronary artery by the annuloplasty device in the coronary sinus. In addition, the protective device can inhibit compression of the coronary artery from inside the heart, such as from a prosthetic mitral valve that exerts radially outward pressure toward the coronary artery. The annuloplasty device can also create an artificial inner ridge or retaining feature projecting into the native mitral valve region to help secure a prosthetic mitral valve.

CATHETER INCLUDING SLIDABLE PUSH GRIP

A catheter may include an elongate body extending from a proximal end to a distal end and defining a lumen; a push member mechanically coupled to the proximal end of the elongate body; and a slidable push grip disposed about an outer perimeter of the push member. The slidable push grip is controllably engageable with the push member. When the slidable push grip is in an engaged state with the push member, the slidable push grip transmits an axial force to the push member to enable the push member to transmit the axial force to the elongate body. When the slidable push grip is in a disengaged state with the push member, the slidable push grip is movable axially in at least one direction along a length of the push member while transmitting substantially no axial force to the push member.

Guide catheter with removable support

Catheters such as guide catheters can be configured for delivery of devices to vasculature portions such as intracranial spaces while retaining a desired level of flexibility. A catheter having an elongate shaft can include removable support means that can provide column support to the elongate shaft. The elongate shaft can include anchoring means that releasably secure the removable support means. The catheter can be deployed within a patient's vasculature, followed by deploying the removable support means.

A flexible, kink-resistant catheter

PROTECTION DEVICES AND METHODS FOR BALLOON CATHETER-TYPE DEVICES

SYSTEM ZUM EINFÜHREN EINES STENTS MIT RADIAL STABILISIERTEM KATHETER

ASPIRATION CATHETER

To prevent a small diameter catheter 10 of soft material from collapsing when being used to aspirate a blood clot 25, the lumen 16 of the catheter contains a longitudinal member 26 having radially-extending fin elements 33. The longitudinal member may itself be a catheter having a lumen 22 through which passes a wire 27 having at its distal end an expandable basket 28 for retrieving the clot.

Aspiration catheter

CATHETER AND PROCEDURE FOR ITS PRODUCTION

CATHETER WITH FLEXIBLE SECTION

Reinforced catheter with articulated distal tip

A reinforced medical catheter (10) includes an elongated tubular outer wal! reinforced by an internal helical coil spring (36). Successive loops of the coil spring adjoining the distal end are longitudinally separated, and a working lumen extends longitudinally through the catheter. A longitudinally extending reinforcing cable is captured in the tubular outer wall against the exterior of the coil spring. A steering cable operably interconnected with the distal end of the coil spring extends proximally from the distal end of the coil spring freely through the working lumen to the proximal end of the catheter. The reinforcing cable and the steering cable may constitute a continuous elongated filament. Withdrawing the steering cable proximally through the working lumen causes the distal tip of the catheter to be deflected laterally.

NONCIRCULAR INNER LUMEN GUIDING CATHETER WITH ASSISTED VARIABLE SUPPORT

A noncircular inner lumen guiding catheter with assisted variable support has an inner wall defining a noncircular cross-sectional shaped lumen for use in delivery of multiple microcatheters or other devices for treatment of neurovascular defects, such as for treatment of aneurysms. The noncircular inner lumen guiding catheter with assisted variable support includes torque transmittal guidance walls that are flexible linearly but not circumferentially, and that are neither collapsible nor kinkable. The noncircular shaped cross-section of the inner lumen may extend along the entire length of the catheter or a portion thereof, including distal or proximal. 50 60 62a 60 62b FIG, 1 62b FIG, 2 52 6058a FIG. 3 62b 54 58b ...

Steerable multilumen catheter shaft

A multilumen catheter shaft body includes a proximal end segment with a first durometer and a first longitudinal length dimension. A proximal intermediate segment is fixedly joined to a distal end of the proximal end segment and includes a second durometer and a second longitudinal length dimension. A distal intermediate segment is fixedly joined to a distal end of the proximal intermediate segment and includes a third durometer and a third longitudinal length dimension. A distal terminal end segment is fixedly joined to a distal end of the distal intermediate segment and includes a fourth durometer and a fourth longitudinal length dimension. The first durometer is greater than at least the second and third durometers. The fourth durometer is greater than at least the second and third durometers. A plurality of parallel longitudinal lumens extends through the body, providing a structure useful in a cholangioscope or other endoscopic applications.

Catheter adapter providing catheter kink resistance

A peripheral vascular device with a flexible, kink resistant catheter adapter to reduce the chance of the catheter kinking and occluding the catheter. The device comprises a catheter adapter connected to the proximal end of the catheter and at least a portion of the catheter adapter is made from a first material and at least a portion of the tip is made from a second material that is more flexible than the first material. The vascular device may also comprise a wing element attachment and at least one connecting channel. co ...

Introducer

Provided is an introducer sheath in which a sheath tube can be easily restored to a state before kinking even when the sheath tube of the introducer sheath is bent and kinked during a medical activity. Specifically provided is an introducer sheath which comprises a sheath tube that has a hollow structure continuous from the base end to the distal end and a sheath hub that is connected to the base end side of the sheath tube, wherein a return angle of the kink portion when the sheath tube is bent 180° is 0-15°.

MEDICAL DEVICE WITH COLLAPSE-RESISTANT LINER AND METHOD OF MAKING SAME

A medical device for guiding through anatomy, such as a catheter or guidewire, with a tubular body that has been slotted to enhance bending flexibility, and a polymer liner with an anti-collapsing structure, and a method of making a medical device with a kink-resistant corrugated tubular member and an anti- collapsing structure. Anti collapsing structures may be helical or annular, and may be wire, such as ribbon wire, grooves in the liner, corrugations, or a braid. Liners may be bonded to the anti~collapsing structure, or may have two layers, with the anti-collapsing structure between the layers. Corrugations may be formed between sections of the anti-collapsing 'structure with heat, pressure, stretching, compression, a mold, or a combination thereof, and may extend inward or outward. Shape or wall thickness may vary along the length to provide a varying bending stiffness. Slots may be formed in groups of two, three, or more, and adjacent groups may be rotated about the axis forming a ...

ANTI-OCCLUSION CATHETER

An intravenous catheter may include a distal end, a proximal end, a lumen extending between the distal end and the proximal end, and an inner surface forming the lumen. At least a portion of the inner surface includes a non-circular and non-oval cross-section, which may prevent occlusion of the intravenous catheter when a kink in the intravenous catheter occurs. The non-circular and non-oval cross- section may include a variety of shapes. For example, the non-circular and non-oval cross-section may be polygonal or include one or more ribs.

SHEATH RETAINER DEVICES, SYSTEMS AND METHODS

In general, medical sheath systems that can employ retainer devices having a plurality of channels configured to retain a sheath assembly in one or more curved configurations are described. In one embodiment, a retainer device may releasably retain a curvable tube of the sheath assembly in any of multiple curved configurations that range, for example, in selectable increments between 00 to 1800 .

DRUG DELIVERY BALLOON APPARATUS

A drug delivery balloon apparatus 100, where the drug delivery balloon apparatus comprises: at least two lumens, a first lumen 114 and a second lumen 116, a balloon inflation port 102, a guidewire port 110, a drug delivery port 108, an occlusion balloon 104, a drug delivery balloon 106 having an outer surface with a plurality of grooves 140, where the occlusion balloon is disposed between the drug delivery balloon and the balloon inflation port, and the occlusion and drug delivery balloons are in communication with the first lumen, one or more drug delivery channels 120 extending the length of the second lumen, and one or more drug delivery ducts 146 extending from the one or more drug delivery channels to an exterior surface of the second lumen.

COLLAPSE-RESISTANT SWELLABLE CATHETER

A catheter (14a) and method of making it are disclosed. The catheter (14a) includes a swellable inner element (100) and a non-swellable outer sleeve (200) covering an outer wall of the inner element. The inner element (100) absorbs liquid from infusate administered through the catheter (14a) and swells in size. Outward swelling of the inner element (100) is restrained by the non-swellable outer sleeve (200). The inventive catheter can be substituted for a conventional catheter that is used in an insulin infusion system.

KINK-RESISTANT TUBING

Tubing for use in gastrointestinal applications includes a hollow tube and a spring positioned inside the tube. The spring is corrosion resistant and helps to prevent kinking of the tubing when the tubing is bent. An encapsulant may be positioned over the spring. The spring may be co-extruded with the tubing.

DEVICE, SYSTEM, AND METHOD FOR ANATOMICAL LESION LENGTH ESTIMATION

An intravascular measurement system is provided. The system includes a catheter having a plurality of visible markers on a proximal portion that are proportional to a plurality of radiopaque markers on a distal portion. In at least one aspect, the system includes an imaging device adjacent the distal end.

Sheath and intubator for intubator

MEDICAL INSTRUMENT

... [Problem] To provide a medical instrument that has increased kink resistance and can uniformly discharge a fluid in the peripheral direction in a living body. [Solution] The medical instrument (1) has an elongated member provided with: a threading lumen (20) into which a medical instrument provided with an elongated main body can be threaded; a fluid lumen (30) to which is formed a helical section (31) extending in a helical manner and through which a fluid (F) can flow; and a discharge section (32) that discharges the fluid (F) flowing through the fluid lumen (30) and of which at least two are provided to differing positions along the axial direction of the helical section (31) of the fluid lumen (30).

LARGE DIAMETER SHEATH

A large diameter, flexible, kink-resistant and rotatable introducer sheath (10) for percutaneous delivery of a contained and implantable medical device in the vasculature of a patient. The introducer sheath includes a reinforcement such as a flat wire coil (23) fitted about an inner, lubricous material such as polytetrafluoroethylene tube (22). A wire braid (25) is placed around the coil to give good transfer of rotational forces. An outer tube (27) of a heat formable polyamide material is heat formed and compressed through the spaces between the wires of the braid and turns of the wire coil to mechanically connect the outer tube to the roughened outer surface of the inner tube. The durometer of the outer tube can be varied to effect the flexibility of the sheath. A radiopaque marker (42) is positioned at the distal end of the coil and around the inner tube for radiographic visualization.

MEDICAL BALLOON CATHETER WITH HOLLOW WIRE CABLE ROPE GUIDEWIRE DUCT

The application concerns an intraluminal balloon catheter (100) comprising an elongated flexible shaft (5) having a proximal end (20), a distal end (10), a longitudinal inflation lumen (21) disposed within the shaft (5), and at least one inflatable balloon (4) towards the distal end (10) in fluid communication with the inflation lumen (21), the inflation lumen (21) provided with a longitudinal guidewire duct (7), disposed with a longitudinal guidewire lumen (6) extending therein, in fluid connection with a distal guidewire port (30) located in a region at the distal end (10) of the shaft (5), and a proximal guidewire port (32) located at the proximal end (20) of the longitudinal guidewire duct (7), the guidewire duct (7) comprising a hollow rope duct (8) formed from a plurality of longitudinal wire cables (40, 40') cylindrically stranded to form the hollow rope duct (8), the hollow rope duct (8) optionally having a region of transitional flexibility between the proximal (20) and distal ...

CATHETER AND METHOD FOR PRODUCING THE SAME

The invention relates to a catheter with a substantially U-bent hollow fiber membrane (10), or to such a hollow fiber membrane (10), that comprises two arms (11, 13) and a bent section (15). According to the invention, the hollow fiber membrane (10) is heat-treated and/or treated with at least one solvent in at least its bent section (15). The inventive catheter has a small overall diameter, is easy to produce and easy to implant or explant. The bent section (15) does not kink so that the lumen remains open. The invention further relates to a method for producing such a catheter or such a hollow fiber membrane.

Catheter for insertion into branched blood vessel

A branch blood vessel insertion catheter has a catheter body having a lumen penetrating therethrough from a distal end of the catheter body to a proximal end thereof to allow a guide wire to be inserted therethrough. The catheter body has an inner layer, a wire-wound reinforcing member provided on an outer surface of the inner layer, and an outer layer covering both the inner layer and the reinforcing member. The catheter body has a first physical property change point located at a position apart from a distal end of the catheter at a distance of 3.0 to 7.0 mm and a rigidity of a portion of the catheter body located proximally from the first physical property change point is set higher than that of a portion of the catheter body located distally from the first physical property change point.

Device for the treatment of esophageal stenoses

A device for the treatment of esophageal stenoses, including at least a body of elongated shape intended to be inserted within the esophagus of a patient, and a tubular sheath mounted around said body to define an interspace between said body and the tubular sheath, wherein it includes a stiffening element accommodated in said interspace and including a plurality of ribs which extend along said interspace.

Transcatheter coronary sinus mitral valve annuloplasty procedure and coronary artery and myocardial protection device

Devices and methods are disclosed for the treatment or repair of regurgitant cardiac valves, such as a mitral valve. An annuloplasty device can be placed in the coronary sinus to reshape the mitral valve and reduce mitral valve regurgitation. A protective device can be placed between the annuloplasty device and an underlying coronary artery to inhibit compression of the underlying coronary artery by the annuloplasty device in the coronary sinus. In addition, the protective device can inhibit compression of the coronary artery from inside the heart, such as from a prosthetic mitral valve that exerts radially outward pressure toward the coronary artery. The annuloplasty device can also create an artificial inner ridge or retaining feature projecting into the native mitral valve region to help secure a prosthetic mitral valve.

Coaxial bi-directional catheter

A deflectable catheter including an outer member having a proximal portion and a distal portion, an elongated column member extending distally from the outer member and an inner member positioned coaxial with the outer member and attached to the column member. The inner member extends distally of the outer member and has a distal tip portion. A reinforcement member is positioned over the column member to restrict axial movement of the column member such that when one of the inner member or outer member is moved with respect to the other, axial compression of the column member is restricted by the reinforcement member causing the distal tip portion of the inner member to deflect laterally.

HIGHLY FLEXIBLE TUBULAR DEVICE WITH HIGH INITIAL TORQUE RESPONSE FOR MEDICAL USE

The invention relates to an elongated torque tube for use in medical applications. The torque tube comprises an elongated tubular structure having a cylindrical cross section and defining a longitudinal axis and a circumferential axis, the elongated tubular structure including a helical cut having a finite thickness and extending along the length of the elongated tubular structure, the helical cut being aligned with the circumferential axis and including a plurality of protrusions extending along the longitudinal axis, the protrusions defined by discontinuous cuts aligned with the longitudinal axis.

Kink and Compression Tolerant Medical Tubing

Medical fluid tubing described herein is configured to be advantageously tolerant of kinking and/or crushing. That is, the tubing is configured such that even if the tubing is kinked or fully compressed at least some portion of the lumen defined by the tubing will remain open, and some fluid will continue to flow through the tubing. Such kink and compression tolerant medical tubing can be advantageously used in association with medical fluid pumping systems (e.g., peritoneal dialysis systems and the like). In some examples, the tubing described herein is used in conjunction with, or as a part of, a medical fluid cassette that interfaces with such medical fluid pumping systems.

KINK-PROOF BALLOON CATHETER

The invention relates to a balloon catheter comprising a shaft (2) extending in the longitudinal direction, which has at least a first and a second section (7, 8), with the first section (7) being arranged distal to the second section (8) and being more flexible than the second section (8), with the shaft (2) being provided with a first and a second hose-like tube (10, 11) and a balloon (3) being arranged at the distal end of the first tube (10), said balloon (3) being expandable by pressurization with a fluid led through said first tube (10), and said second tube (11) serving for accommodating a guidewire and terminating distally of said balloon (3) and being provided with an opening at said distal end, wherein both said first and second tubes (10, 11) extend along said first and second sections (7, 8), and both said first and second tubes (10, 11) are more flexible in said first section (7) than in said second section (8), wherein a transition section (9) is arranged between said first ...

TUBE FOR BEING INTRODUCED INTO AN OBJECT

BALLOON CATHETER

The present invention relates to a balloon catheter. The invention comprises: a first shaft; an expandable balloon which is attached to the front end of the first shaft; an expandable lumen which is formed inside the first shaft and to which a liquid required for expanding the balloon is provided; a second shaft which extends from the front end of the first shaft to which the balloon is attached and has a wire hole through which a guide wire passes; and a guide wire lumen, which is formed inside the second shaft and through which the guide wire passes. According to the invention, the first and second shafts are coaxially connected and the expandable lumen and the guide wire lumen are respectively formed in each shaft in order to reduce the overall diameter of the shaft, thereby facilitating surgery and improving pushability.

RAPIDLY INSERTED CENTRAL CATHETER AND METHODS THEREOF

METHOD FOR FORMING A FLEXIBLE MEDICAL ARTICLE

Emissionsfreie Vorrichtungen zur Behandlung von Abgas

Diese Erfindung bezieht sich auf eine emissionsfreie Abgasbehandlungsvorrichtung, bei der keine Emission aus der Behandlung von Abgas resultiert. Die Vorrichtung enthält einen Behälter, der Öffnungen aufweist, die nur als Einlass dienen. Ein Austausc, ist im Inneren des Behälters nach dem Einlass für das Abgas vorgesehen. Es gibt eine Gaskammer an jedem Verbindungsteil zwischen zwei sequentiellen Stufen. Die Gasaustauschkammer an der ersten Stufe hat eine Durchgangsöffnung, die zur Umgebung führt, und an jeder der Stufen von der zweiten bis zur letzten des Austauschabschnitts ist eine Rückführleitung für jede Stufe vorgesehen zum Verbinden mit dem Einlass der ersten Stufe des Austauschabschnitts. Mit diesem Aufbau wird beim Eintritt in den Austauschabschnitt Abgas nach innen ausgespritzt und bewirkt eine sehr starke Verwirbelung, die dazu führt, dass in der Gaskammer Vakuum entsteht und Luft mit Sauerstoff von der Umgebung in die Gaskammer über die Durchgangsöffnung zur Umgebung angesaugt ...

Einführhilfe

Einführschleuse, umfassend: ein Schleusenrohr, das eine Lumenstruktur aufweist, die sich von einem proximalen Abschnitt zu einem distalen Abschnitt ausdehnt; und einen Schleusenansatz, der mit dem proximalen Abschnitt des Schleusenrohrs verbunden ist, wobei ein Rückstellwinkel eines geknickten Abschnitts, wenn das Schleusenrohr um 180° gebogen wird, 0° bis 15° beträgt.

Real-time sampling system

A device and system for allowing real-time viewing of a procedure beyond a distal end of an endoscope. The device 48 includes a sheath 50, having at least two lumen (74,76, figure 3), and a handle 52. The handle has a connector that connects to a proximal end of an endoscope, a shaft portion that rotatably connects to a proximal end of the connector, and a manifold that is slidably received by the shaft portion. The manifold connects to the sheath and allows for insertion of a radial ultrasound probe, through access port 56, and of a medical tool, through angled side port 54, into the sheath. A stopping device 62 in the manifold restricts deployment of the medical device, which may be a sampling (biopsy) needle. The sheath may include a telescoping tube to prevent buckling. The distal end of the sheath may have an exit ramp (78, figure 4) to laterally deflect the needle.

BALLOON CATHETER

STRENGTHENED VENENZUGANGSKATHETER

DISTAL WIRE ATTACK

Large diameter delivery catheter/sheath

Balloon catheter systems and methods

The embodiments disclosed herein relate to balloon catheter assemblies. The balloon catheter assemblies can include a hub, an elongated member, and an inflation balloon. The balloon catheter assemblies can also include a support wire having a proximal end that is longitudinally displaceable within a sleeve that is disposed in the catheter hub. A distal end of the support wire may be coupled to the inflation balloon at one or more positions.

Self-expanding cannula

Disclosed is a self-expanding cannula, systems using such cannulae, and methods of their use. The cannulae may comprise single lumen cannula (SLC) configurations and double lumen cannula (DLC) configurations, and include at least a first cannula and a self-expanding wire frame attached to the first cannula. Self-expanding wire frame is automatically expandable from a compressed state (providing a reduced cannula diameter as it is moved through a patients body to the site at which it is to be deployed) to an expanded state (which increases the diameter of the cannula to the diameter intended for its normal use). The expanded wire frame provides radial support to prevent a drainage canal (whether a patients blood vessel or a portion of the system inserted into the patients blood vessel) from collapsing as fluid is drained from the patient.

Embolization microcatheter head having slitted pattern

An embolization microcatheter having an elongated microcatheter body configured for passing therein a suspension of particles suspended in a suspension fluid; and a microcatheter head connected to a distal end of said microcatheter body and comprising a proximal head section and a distal head section, wherein the proximal head section includes a proximal wall forming a proximal section lumen, the proximal wall having a plurality of through-holes, wherein the distal head section includes a distal wall forming a distal section lumen, and a suspension delivery opening at a distal end of the distal end section; wherein the distal section is devoid of through-holes, and wherein each of the plurality of through-holes are shaped and/or sized to allow passage therethrough of the suspension fluid while blocking passage of the particles suspended therein.

Catheter adapter with distal inner diameter curvature providing kink resistance

Catheter adapters and vascular access device including catheter adapters are disclosed. The catheter adapter tip opening has an internal curvature defining a tapered region in the lower portion, but not the upper portion, to support a flexured portion of the catheter to prevent kinking and occlusion.

Anti-occlusion catheter

An intravenous catheter may include a distal end, a proximal end, a lumen extending between the distal end and the proximal end, and an inner surface forming the lumen. At least a portion of the inner surface includes a non-circular and non-oval cross-section, which may prevent occlusion of the intravenous catheter when a kink in the intravenous catheter occurs. The non-circular and non-oval cross- section may include a variety of shapes. For example, the non-circular and non-oval cross-section may be polygonal or include one or more ribs.

BALLOON CATHETERS AND METHODS THEREOF

Provided herein in some embodiments is a catheter including an elongate body with a polymeric portion and a metallic portion; a balloon over at least some of the polymeric portion; a coupler formed over or between the polymeric and metallic portions; and one or more scoring wires. The metallic portion can include a spiral-cut portion configured to prevent elongation and kinking of the elongate body. The one or more scoring wires can be fixed to and extend from a tip at a distal end of the elongate body, over the balloon, through the polymeric portion of the elongate body, through the coupler, and to the metallic portion of the elongate body. The one or more scoring wires can be fixed to an internal surface of the spiral-cut portion or formed from the spiral-cut portion.

INTERNAL BALLOON SHEATH

Devices and methods for providing an internal balloon sheath are disclosed. One device includes a sheath (400) for insertion through an arteriotomy of a patient. The sheath comprises a tubular sheath body (402) having a longitudinal axis, an open proximal end, an open distal end, an outer surface and an inner surface, the inner surface defining a lumen between the proximal and distal ends for passage of a catheter device. The sheath also comprises an inflatable balloon (410) disposed within the lumen. The inflatable balloon is configured to occupy a longitudinal space in the lumen between the inner surface of the sheath body and the catheter device (422) when the catheter device is disposed within the sheath and the balloon is inflated, and fluidically seal the lumen.

KINK RESISTANT PEEL AWAY MEDICAL SHEATH

Devices and methods for providing a kink resistant peel away sheath are disclosed. One device includes a sheath for insertion into a vasculature of a patient. The sheath (300) comprises a sheath body (105) having an outer surface, a longitudinal axis and a lumen (108) formed therethrough. The sheath body (105) comprises an inner layer (110) arranged about the longitudinal axis, an outer layer (120) coaxially arranged with the inner layer (110), and a support layer (130) positioned between the inner and outer layers (110,120), wherein the inner, outer and support layers (110, 120, 130) are laminated together to form the sheath body (105). The sheath (300) also comprises at least one shear line (144) positioned beneath the outer surface of the sheath body (105), and configured to facilitate the longitudinal separation of the sheath body (105) along the at least one shear line (144).

REINFORCED VENOUS ACCESS CATHETER

CATHETER ADAPTER PROVIDING CATHETER KINK RESISTANCE

A vascular access device is disclosed including a catheter (12), a catheter adapter (18) having a distal end (20) and a proximal end (22), an overall length (24) extending from the distal end to the proximal end, an internal cavity (26), an upper portion (28), a lower portion (30) and a tip region (94) having a distal opening (34) having a circumference through which the catheter extends, an introducer needle (36) extending through the catheter; and a needle hub (40) connected to the proximal end of the introducer needle. The catheter adapter being connected to the proximal end of the catheter and at least a majority of the catheter adapter is made from a first material and at least a portion of the tip is made from a second material that is more flexible than the first material.

OVER-THE-NEEDLE CATHETER SLEEVE

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having a sleeve configured thereon. The catheter includes a body having an outer diameter. The body also includes a proximal end and a distal end and defines a lumen extending from the proximal end to the distal end. A needle is configured within the lumen of the catheter and extends from the proximal end to the distal end. The sleeve is configured around a portion of the outer diameter of the catheter that passes through an insertion site of the catheter. Further, the sleeve includes a length extending from a first end to a second end and is configured to prevent the catheter from collapsing along the length of the sleeve. In addition, the sleeve is configured to prevent leakage from the insertion site of the catheter.

CATHETER AND METHOD FOR PRODUCING THE SAME

The present invention concerns a catheter with a hollow fiber membrane (10) bent essentially in U-shape or such a hollow fiber membrane (10) comprising two legs (11, 13) and a bent section (15). According to the invention the hollow fiber membrane (10) is heat-treated and/or treated with at least one solvent in its bent section (15). The catheter according to the invention has a small overall diameter, is simple to manufacture and easy to implant and explant. The bent section (15) does not kink so that the lumen remains open. The present invention also concerns a method for producing such a catheter or such a hollow fiber membrane.

REINFORCED CATHETER WITH ARTICULATED DISTAL TIP

A reinforced medical catheter (10) includes an elongated tubular outer wal! reinforced by an internal helical coil spring (36). Successive loops of the coil spring adjoining the distal end are longitudinally separated, and a working lumen extends longitudinally through the catheter. A longitudinally extending reinforcing cable is captured in the tubular outer wall against the exterior of the coil spring. A steering cable operably interconnected with the distal end of the coil spring extends proximally from the distal end of the coil spring freely through the working lumen to the proximal end of the catheter. The reinforcing cable and the steering cable may constitute a continuous elongated filament. Withdrawing the steering cable proximally through the working lumen causes the distal tip of the catheter to be deflected laterally.

Anti-collapse expandable guide pipe as well as infusion system and patch pump with same

Catheter

MEDICAL TUBING FOR CATHETERS

Tubing made of two or more polymers circumferentially arranged around the perimeter of the tubing in a single layer may be useful as medical tubing. Specifically, such tubing may be useful in catheters, sheaths, sheath introducers, implant delivery systems, and other medical devices having elongated tubular components. Selection of the two or more polymers based on the durometer and melting temperature permits optimization of axial strength and flexibility for particular applications. Such tubing may be extruded as a single layer tubing or a multi-layer tubing where the additional layers may be single material layers or more multi-polymer layers.

REINFORCED CATHETER WITH ARTICULATED DISTAL TIP

A reinforced medical catheter includes an elongated tubular outer wall reinforced by an internal helical coil spring. Successive loops of the coil spring adjoining the distal end are longitudinally separated, and a working lumen extends longitudinally through the catheter. A longitudinally extending reinforcing cable is captured in the tubular outer wall against the exterior of the coil spring. A steering cable operably interconnected with the distal end of the coil spring extends proximally from the distal end of the coil spring freely through the working lumen to the proximal end of the catheter. The reinforcing cable and the steering cable may constitute a continuous elongated filament. Withdrawing the steering cable proximally through the working lumen causes the distal tip of the catheter to be deflected laterally.

Balloon catheter

A balloon catheter includes a proximal shaft, a distal shaft, an intermediate shaft positioned between the proximal shaft and the distal shaft, lumens that penetrate through the proximal shaft, the intermediate shaft, and the distal shaft and introduce and discharge a dilation fluid for a balloon, an inner tube shaft having a guide wire opening arranged at a boundary between the intermediate shaft and the distal shaft and through which the lumen extends, and a reinforcement member arranged in the lumen so as to suppress an occurrence of a kink. The reinforcement member has a tapered proximal portion fixed to the proximal shaft and arranged inside the lumen positioned in the intermediate shaft, a tapered distal portion arranged inside the lumen positioned in the distal shaft, and a straight transition portion positioned between the proximal portion and the distal portion. The transition portion is aligned with the guide wire opening.

Occlusion device

A catheter includes a detachable tip assembly that when detached from the catheter may be used to occlude a body lumen or vessel. The detachable distal tip assembly may include an inflatable balloon disposed over and secured to a tubular member. The inflatable balloon may be in fluid communication within an inflation lumen extending within the catheter body. Upon reaching a target site within a body lumen or vessel, the detachable distal tip assembly may be released from the distal end of the catheter upon inflation of the balloon to a predetermined size.

Procedural sheath

A procedural sheath and methods of use that assists in maintaining a fluid path while the procedural sheath is positioned within a vascular conduit of a patient. The procedural sheath includes one or more channels extending longitudinally along a working length of the body of the sheath. Each channel includes one or more fluid paths configured to allow blood to flow from the vascular conduit into a device receiving lumen of the sheath. One or more elongate members selectively coupled to the body operatively cooperate with the channels to fluidly control fluid access into the device receiving lumen through the fluid paths.

POST OPERATIVE WOUND SUPPORT DEVICE

UNCOLLAPSIBLE CATHETER

ПОЛНОСТЬЮ АРОМАТИЧЕСКОЕ ПОЛИАМИДНОЕ ВОЛОКНО

Настоящее изобретение представляет собой полностью ароматическое полиамидное волокно, которое характеризуется тониной одиночной нити в диапазоне от 0,4 дтекс до 3,5 дтекс, совокупной тониной в диапазоне от 5 дтекс до 30 дтекс, пределом прочности при разрыве, составляющим 15 сН/дтекс или более, начальным модулем упругости при растяжении в диапазоне от 500 сН/дтекс до 750 сН/дтекс и количеством фибрилл, составляющим менее чем 100/м. Технический результат заключается в предложении полностью ароматического полиамидного волокна, которое характеризуется уменьшенной совокупной тониной и уменьшенной тониной одиночной нити и которое также является превосходным с точки зрения качества и характеристик армирования. 3 н. и 5 з.п. ф-лы, 3 ил., 3 табл.

Flexible delivery system and implantable stent for surgical use

BALLOON CATHETER WITH SWIMMING REINFORCEMENT AND PROCEDURE

MEDICAL DEVICE WITH A COLLAPSE-RESISTING INTERIOR LAYER AND PROCEDURE FOR THE PRODUCTION

Catheter adapter with distal inner diameter curvature providing kink resistance

Catheter adapters and vascular access device including catheter adapters are discloses. The catheter adapter tip opening (34) has an internal curvature defining a tapered region in the lower portion, but not the upper portion, to support a flexured portion of the catheter to prevent kinking and occlusion.

STRAIN MANAGEMENT IN STENT DELIVERY SYSTEM

A percutaneous, transluminal system with a distal end for inserting into a body and a proximal end to remain outside the body, and comprising: an inner catheter which runs the length of the system and has a distal end and a proximal end, the inner catheter itself comprising: an inner tube (102); a wire coil (110) disposed around at least a portion of the inner tube, having a distal end, a proximal end, a distal region (114), an intermediate region and a proximal region (112); and an outer tube (124), having a distal end and a proximal end, disposed around at least a portion of the wire coil reinforcing member, characterized by: the wire coil having a closed-coil structure in the intermediate region and an open-coil structure in at least one of the distal region and the proximal region; and by a flow path for liquid from the proximal to the distal end of the system which includes a radially-extending portion through said open coil structure.

Catheter

A catheter includes an inner shaft having a tubular inner layer, a braid arranged on the tubular inner layer, and an outer layer made of resin and covering the braid. The catheter also includes a tubular tip attached to a front end of the inner shaft, the tubular tip has a portion that is thicker than the front end of the inner shaft, and an outer diameter that decreases toward a front end thereof.

Catheter tubing with structural beam profile

A catheter tubing is disclosed having a cross-sectional profile that takes the characteristics of a structural beam, such as an “I”-beam, and in so doing possesses the bending moment and stiffness of the beam profile. The tubing can be made from existing polymers and existing manufacturing techniques, and multi-lumen configurations are possible. In the example of the I-beam profile, the catheter tubing will have two lumens while a double I-beam configuration will possess four lumens.

Rapid exchange balloon catheter with braided shaft

A balloon catheter for use alone or as a stent delivery system includes a balloon segment and a shaft segment having a varying flexibility. The shaft segment includes a polymer encased braid which extends along substantially the entire length of the shaft segment for added pushability and kink resistance. A flexible distal tip extends from the balloon for improved trackability.

Introducer sheath with braided filament securement mechanism

A tubular body for a medical device for insertion within a body passageway of a patient. The tubular body includes a tubular inner liner. A braided member is disposed along an outer surface of the liner. The braided member includes intersecting filaments and cells defined by the filaments. A securement mechanism, such as radiopaque solder, is disposed along a circumferential region of the braided member. The securement mechanism is attached to portions of the filaments and spans the cells that correspond to the circumferential region to inhibit relative movement of filament ends. An outer surface of the securement mechanism is sized to extend radially outward to a position up to an outer surface of the braided member to not add to the overall wall thickness of the tubular body. An outer jacket is positioned longitudinally around the braided member and connected to the inner liner.

Three-Lobe Drainage Hose

A drainage system includes a drainage tube, a tubular coupling, and a drainage hose. The drainage tube defines an inner passage and terminating in a first drainage end and a second drainage end. The tubular coupling has a first thickness that runs throughout the coupling and forms a passage and a stop determined by a second thickness. The drainage hose is formed by a profile which runs along a length of the drainage hose and terminates in a first drainage end and a second drainage end.

Insertion element and insertion device

One embodiment of the invention relates to an insertion element which is designed to cooperate with an insertion device for inserting a medical implant into a human or animal body. The insertion element comprises a sleeve which, in the circumferential direction, has at least two types of circumferential segments of different resilience. The invention further includes an embodiment relating to an insertion device for inserting a medical implant into a human or animal body, comprising at least one outer insertion element wherein the outer insertion element is expand able, at least in regions, when ready for use, wherein the outer insertion element comprises a sleeve which, in the circumferential direction, has at least two types of circumferential segments of different resilience.

Device, System, and Method for Anatomical Lesion Length Estimation

An intravascular measurement system is provided. The system includes a catheter having a plurality of visible markers on a proximal portion that are proportional to a plurality of radiopaque markers on a distal portion. In at least one aspect, the system includes an imaging device adjacent the distal end.

TOOL AND METHOD FOR USING SURGICAL ENDOSCOPE WITH SPIRAL LUMENS

An embodiment of the present invention provides for an elongated medical device with a hypotube backbone running through the device, and a spiral lumen spiraled around the backbone along the length of the backbone. The backbone may be formed from a nitinol alloy for increased bendability without compromising axial stiffness. The device may also incorporate a jacket around the hypotube and spiral lumen formed using either melting, molding, bonding, or casting. The spiral lumen may be configured to accommodate a variety of uses, including actuation members (e.g., pull wires), tools, and means for aspiration, irrigation, image capture, and illumination. Additionally, the present invention provides a method for constructing an elongated medical device with a hypotube backbone running through the device, and a spiral lumen spiraled around the backbone along the length of the backbone. 1. An elongated medical device comprising:a hypotube backbone running through the device; anda spiral lumen spiraled around the backbone along the length of the backbone.2. The device of claim 1 , wherein the backbone is formed from a nitinol alloy.3. The device of claim 1 , wherein the backbone is configured to provide axial stiffness along the length of the device.4. The device of claim 1 , wherein the backbone provides a central lumen that runs the length of the device.5. The device of claim 4 , wherein the central lumen is configured to deliver a central payload from the proximal end of the device to the distal end.6. The device of claim 5 , wherein the central payload comprises at least one of laser fibers claim 5 , microsurgical tools claim 5 , imaging means claim 5 , irrigation means claim 5 , and aspiration means.7. The device of claim 1 , wherein the spiral lumen is configured to deliver a spiral payload from the proximal end of the device to the distal end.8. The device of claim 7 , wherein the spiral payload comprises at least one of laser fibers claim 7 , microsurgical tools ...

Introducer Set

An introducer set () for providing vascular access in a patient's body comprises an introducer sheath () and a dilator (). The introducer sheath () has a tubular body () made of flexible material with a distal portion (), a proximal portion () and an inner surface, the proximal portion () being configured to be inserted into a patients vessel to allow a medical device () to be inserted through the introducer sheath () into the patient's vessel. At least one of the dilator () and the introducer sheath () comprises a stiffening structure () imparting stiffness to the tubular body () of the introducer sheath (), wherein said stiffening structure () can be released, removed or otherwise deactivated. 1. An introducer set for providing vascular access in a patient's body , comprising:an introducer sheath having a tubular body made of flexible material with a distal portion, a proximal portion and an inner surface, the proximal portion being configured to be inserted into a patient's vessel to allow a medical device to be inserted through the introducer sheath into the patient's vessel; anda dilator having a body with a proximal portion, a distal portion and an outer surface, the dilator being insertable into the introducer sheath such that its proximal portion extends proximally of the introducer sheath when the dilator is inserted in the introducer sheath;wherein the tubular body of the introducer sheath has a wall thickness of 0.3 mm or less; andwherein at least one of the dilator and the introducer sheath comprises a stiffening structure imparting stiffness to the tubular body of the introducer sheath, wherein said stiffening structure can be released, removed or otherwise deactivated.2. The introducer set according to claim 1 , wherein the tubular body of the introducer sheath has a wall thickness of less than 0.2 mm.3. The introducer set according to claim 1 , wherein the stiffening structure claim 1 , when activated claim 1 , causes surface friction between at least ...

Medical device having outer polymeric member including one or more cuts

A medical device includes an outer polymeric tubular member and an inner tubular member. The outer polymeric tubular member includes one or more cuts formed therein to increase flexibility of the outer polymeric tubular member and includes an inner surface. The inner tubular member extends through the outer polymeric tubular member and has an outer surface in slidable contact with the inner surface of the outer polymeric tubular member. The outer polymeric tubular member is able to move relative to the inner tubular member as the medical device bends. In an example, the outer tubular member may be formed of a heat shrink material.

CATHETERS HAVING LOW VISCOSITY LUBRICANT

A closed-system urinary catheter with a low viscosity gel lubrication is disclosed. The system has an uncoated catheter, but a hydrophilic coated catheter could be used. The low viscosity lubricating gel within the sachet uniformly coats the catheter when the sachet is ruptured just prior to use. A low viscosity lubrication gel could alternatively be place in the area inside the sheath and external to the catheter. Therefore, the variability that occurs with a hydrophilic catheter or the areas of a non-lubricated catheter with the higher viscosity gel catheters is avoided. 1. A catheter system for draining a fluid , the system comprising:a catheter;a sheath surrounding the catheter; anda sachet positioned within the sheath and external to the catheter, the sachet containing a lubricating fluid having a viscosity of less than 2,000 cP.2. The system in claim 1 , wherein the sachet is comprised of a pliable plastic foil that decreases evaporation and is capable of being opened by tearing or bursting open with normal manual forces applied outside of the sheath without compromising the sheath.3. The system in claim 2 , wherein the pliable plastic is thin enough as not to interfere with scrunching of the sheath during catheter deployment.4. The system in claim 1 , further comprising a collection bag positioned at one end of the catheter.5. The system in claim 4 , further comprising finger holes positioned in the collection bag to facilitate in opening of the collection bag.6. The system in claim 4 , further comprising a hook positioned near the connection of the catheter to the collection bag.7. The system in claim 1 , further comprising an introducer coupled to a proximal end of the catheter.8. The system in claim 7 , further comprising an elongate stem insertable into the introducer.9. The system in claim 8 , further comprising a stopper coupled to a distal end of the elongate stem claim 8 , the stopper sealing a distal portion of the introducer.10. The system in claim ...

CATHETER INCLUDING SURFACE-TREATED STRUCTURAL SUPPORT MEMBER

In some examples, a catheter includes an inner liner, an outer jacket, and a structural support member positioned between at least a portion of the inner liner and at least a portion of the outer jacket. A surface of at least a portion of the structural support member is surface treated to increase an adhesion of the surface to at least one of the inner liner or the outer jacket. Examples surface treatments include physical treatments, chemical treatments, coating treatments, and combinations thereof. In some instances, the at least one portion of the structural support member is a relatively high density portion. 1. A catheter , comprising:an inner liner;an outer jacket; anda structural support member positioned between at least a portion of the inner liner and at least a portion of the outer jacket, wherein a surface of at least a portion of the structural support member is surface treated to increase an adhesion of the surface to at least one of the inner liner or the outer jacket.2. The catheter of claim 1 , wherein the structural support member is surface treated on an inner radial surface of the structural support member without being surface treated on an outer radial surface of the structural support member.3. The catheter of claim 1 , wherein the structural support member is surface treated on an outer radial surface of the structural support member without being surface treated on an inner radial surface of the structural support member.4. The catheter of claim 1 , wherein the surface of at least the portion of the structural support member includes a surface roughness greater than about 2 microns Ra.5. The catheter of claim 1 , wherein the surface of at least the portion of the structural support member is covalently bonded to at least one of the inner liner or the outer jacket.6. The catheter of claim 1 , wherein the surface of at least the portion of the structural support member comprises a coating covalently bonded to at least one of the inner liner ...

BALLOON CATHETER

A balloon catheter includes a proximal shaft, a distal shaft, an intermediate shaft positioned between the proximal shaft and the distal shaft, lumens that penetrate through the proximal shaft, the intermediate shaft, and the distal shaft and introduce and discharge a dilation fluid for a balloon, an inner tube shaft having a guide wire opening arranged at a boundary between the intermediate shaft and the distal shaft and through which the lumen extends, and a reinforcement member arranged in the lumen so as to suppress an occurrence of a kink. The reinforcement member has a tapered proximal portion fixed to the proximal shaft and arranged inside the lumen positioned in the intermediate shaft, a tapered distal portion arranged inside the lumen positioned in the distal shaft, and a straight transition portion positioned between the proximal portion and the distal portion. The transition portion is aligned with the guide wire opening. 1. A balloon catheter comprising:a proximal shaft;a distal shaft;an intermediate shaft that is positioned between the proximal shaft and the distal shaft;a lumen that extends through the proximal shaft, the intermediate shaft, and the distal shaft and is configured to introduce and discharge a dilation fluid for a balloon;an inner tube shaft that has a guide wire opening arranged at a boundary between the intermediate shaft and the distal shaft and through which the lumen extends; anda reinforcement member arranged in the lumen so as to suppress an occurrence of a kink in the balloon catheter;wherein the reinforcement member has a tapered proximal portion which is fixed to the proximal shaft and arranged inside the lumen positioned in the intermediate shaft, a tapered distal portion which is arranged inside the lumen positioned in the distal shaft, and a straight transition portion which is positioned between the proximal portion and the distal portion; andwherein the transition portion is aligned with the guide wire opening.2. The ...

STRUCTURE FOR USE AS PART OF A MEDICAL DEVICE

The present invention generally relates to an articulating structure for use as at least part of a medical device. In one aspect, the invention features an articulating structure comprising an inner member, a sleeve, a pull wire, and an outer member. The inner member defines at least one channel on the outer surface of the inner member, the at least one channel extending along a length of the inner ember. The inner member further defines at least one lumen extending through the inner member. The sleeve is disposed in the at least one channel. The pull wire extends within a lumen of the sleeve. The outer member is disposed over the inner member and defines a lumen through which the inner member extends. 115-. (canceled)16. A medical device with an articulating structure , the structure comprising:an outer member including an interior lumen and a distal-most end face;an inner member disposed in the interior lumen of the outer member, the inner member including at least one interior channel and at least one exterior channel; anda pull-wire in each at least one exterior channel of the inner member, each pull-wire including a wire body disposed in said exterior channel, and a tip with a proximal-facing surface that extends radially outwardly from said wire body, the proximal-facing surface of each tip being directly secured to the distal-most end face of the outer member to transfer forces between the pull-wire and outer member.171. The device of claim , wherein an exterior surface of each pull-wire is directly attached to a portion of the outer member.181. The device of claim , further comprising a sleeve disposed in each at least one exterior channel , wherein each pull-wire is disposed in the sleeve , and the sleeve is configured to fix a position of the pull-wire relative to said exterior channel.19. The device of claim 18 , wherein the sleeve comprises a wound element including one of a flat wire or a round wire.20. The device of claim 16 , wherein the inner member ...

INTEGRATED COIL VASCULAR DEVICES

The present disclosure relates to vascular devices such as guidewires and microcatheters having integrated coil sections for optimizing torquability, flexibility, and ability to shape and maintain the distal tip. A guidewire device includes a core and a tube structure coupled to the core such that at least a portion of the core passes into the tube structure. A distal section of the tube structure includes a spiral cut arrangement that configures the distal section as an integral coil integrally incorporated as part of the tube structure. The integrated coil configuration increases the flexibility of the tube structure to reduce the tendency of resilient forces from the tube structure to disrupt a shaped distal tip of the guidewire device. 1. A microcatheter device having a gradient flexibility profile that generally increases in flexibility toward a distal end of the device , the device comprising:a tube structure having a distal section, a proximal section, and a wall defining an interior lumen;an integral coil disposed at the distal section of the tube structure, the integral coil being integrally formed as part of the tube structure as a result of a spiral cut pattern along a length of the distal section of the tube structure, the integral coil providing the distal section of the tube structure greater flexibility than the proximal section of the tube structure; anda transition portion disposed along at least a portion of the proximal section adjacent to the integral coil, the transition portion including a plurality of fenestrations extending through the wall and exposing the lumen, the plurality of fenestrations defining a plurality of axially extending beams and a plurality of circumferentially extending rings.2. The microcatheter device of claim 1 , wherein the plurality of fenestrations form a cut pattern selected from the group consisting of a one-beam cut pattern claim 1 , a two-beam cut pattern claim 1 , a three-beam cut pattern claim 1 , a cut pattern ...

HIGH FLEXIBILITY, KINK RESISTANT CATHETER SHAFT

An enhanced flexibility catheter shaft having an elongate flexible body with a proximal end, a distal end, and at least one lumen extending therethrough. A distal, flexible section on the body has a ribbed or corrugated tubular membrane having at least a first reinforcement structure, such as a first helical support, on a radially exterior or interior surface of the membrane and optionally a second reinforcement structure, such as a second helical support, on the other of the radially interior or exterior surface of the membrane 130.-. (canceled)31. An enhanced flexibility catheter shaft , comprising:an elongate flexible body, having a proximal end, a distal end, and at least one lumen extending therethrough;a distal, flexible section on the body, comprising a tubular membrane having a first helical support on a radially exterior surface of the membrane and a second helical support on a radially interior surface of the membrane.32. (canceled)33. An enhanced flexibility catheter shaft as in claim 31 , wherein an inside diameter of the first helical support is less than an inside diameter of the second helical support.34. (canceled)35. (canceled)36. (canceled)37. An enhanced flexibility catheter shaft as in claim 31 , wherein at least one of the first and second helical supports is floating with respect to the tubular membrane.38. An enhanced flexibility catheter shaft as in claim 37 , wherein both of the first and second helical supports are floating with respect to the tubular membrane.39. (canceled)40. (canceled)41. (canceled)42. (canceled)43. An enhanced flexibility catheter shaft as in claim 31 , wherein the membrane comprises PTFE.44. (canceled)45. (canceled)46. (canceled)47. (canceled)48. (canceled)49. An enhanced flexibility catheter shaft as in claim 31 , wherein the tubular membrane comprises a helical pleat.50. (canceled)51. (canceled)52. An enhanced flexibility catheter shaft as in claim 31 , wherein the distal claim 31 , flexible section has an outer an ...

BALLOON CATHETER

Provided is a balloon catheter in which a balloon can smoothly deflate even when being pulled. A balloon catheter includes a balloon that can inflate and deflate, a hollow distal shaft that communicates with the balloon and in which an inner shaft is inwardly provided, a hollow intermediate shaft that is connected to a proximal end side of the distal shaft so as to communicate therewith, a hollow proximal shaft that overlaps a proximal end side of the intermediate shaft so as to be connected thereto and that communicates with the intermediate shaft, and a reinforcement body that extends from the proximal shaft to the distal shaft and is fixed to the proximal shaft, in which the intermediate shaft is more flexible than the distal shaft, and in an overlapped portion in which the intermediate shaft and the proximal shaft overlap each other, a non-fixing portion in which the intermediate shaft and the proximal shaft overlap each other without being fixed extends to a distal end side relative to a fixing portion in which the intermediate shaft is fixed to the proximal shaft.

ANTI-TWIST TIP FOR STEERABLE CATHETER

A steerable catheter driven by a robotic controller comprises: a catheter body having a tool channel extending from a proximal to a distal end; and a positioning mechanism configured to be coupled with an imaging device and to be slidably inserted into and/or withdrawn from the catheter body through the tool channel. The positioning mechanism and/or the catheter body include an anti-twist feature configured to interlock the catheter body to the imaging device at the distal end of the catheter body so as to prevent rotation of the imaging device within the tool channel. Anti-twist features include bumps or recesses formed in the tool channel inner surface to be interlocked with one or more features formed on the positioning mechanism outer surface. Position and/or orientation of the imaging device remain substantially unchanged with respect to the tool channel when the catheter body is steered by an actuating force. 1. A steerable catheter , comprising:a catheter body having a tool channel extending from a proximal end to a distal end along a longitudinal axis of the catheter body;a positioning mechanism configure to be coupled with an imaging device and to be slidably inserted into and/or withdrawn from the distal end of the catheter body through the tool channel,wherein the positioning mechanism and/or the catheter body has an anti-twist feature configured to interlock the catheter body and the imaging device at the distal end of the catheter body so as to prevent rotation of the imaging device within the tool channel and/or prevent twisting of the distal end of the catheter body.2. The steerable catheter according to claim 1 ,wherein the catheter body includes a proximal section attachable to an actuator unit and a distal section insertable into an anatomical lumen, the catheter body having a plurality of control wires arranged along a wall of the catheter body and configured to transfer an actuating force from the actuator unit to the catheter body so as to steer ...

Optimized Catheter Sheath for Rx Catheter

A catheter configured for placement within a bodily lumen, comprises: a catheter sheath defining a first lumen for medical tools; and an exchange segment defining a second lumen for a guidewire. A proximal end of the exchange segment is joined with a distal end of the catheter sheath in a lengthwise direction forming an angle therebetween, such that the second lumen is laterally offset by a distance and angled with respect to the first lumen. When the catheter is placed within a patient's anatomy, the catheter sheath and/or the exchange segment straightens out so that the axis of the second lumen and the axis of the first lumen become substantially parallel to each other. The offset distance between the axes of sheath and exchange segment depends mainly on the diameter of the guidewire to be used, on the diameter of the sheath, and the angle of the junction.

CATHETER INSERTION DEVICE

The present disclosure relates to a catheter insertion device, which comprises a catheter hub in which a check valve is arranged, and a catheter, which is in fluid communication with the catheter hub, wherein a support element is attached to the catheter, and a flexible buffer element is provided between the support element and the catheter hub. 1. A catheter insertion device comprising:a catheter hub in which a check valve is arranged;a catheter in fluid communication with the catheter hub;a needle hub having a needle attached thereto and projecting through the catheter hub, the check valve, and the catheter;a support element attached to the catheter;a flexible buffer element provided between the support element and the catheter hub with the support element being in fluid communication with the flexible buffer element, the catheter, and the catheter hub; anda needle guard element positioned in the catheter hub.2. The catheter insertion device according to claim 1 , wherein the needle guard element is a spring clip comprising crossing arms.3. The catheter insertion device according to claim 2 , wherein the support element and the flexible hose line are made from soft PVC or soft polyurethane.4. The catheter insertion device according to claim 1 , wherein the check valve comprises radial slits.5. The catheter insertion device according to claim 1 , wherein the flexible buffer element comprises a thicker wall material than a wall material of the catheter.6. The catheter insertion device according to claim 1 , wherein a hollow needle is connected to a wire claim 1 , and the hollow needle and the wire extend through the catheter hub claim 1 , the hose line and the catheter.7. The catheter insertion device according to claim 6 , wherein the support element is provided with wings claim 6 , the wings being foldable and extending on opposite sides of a tubular main body claim 6 , wherein when the wings are folded claim 6 , a releasable clamping means is provided for ...

Catheter With Embedded Core Wires

A kink-resistance catheter has at least a first pair of core wires residing in the catheter body on opposed side of a catheter lumen. The core wires have relatively stiff proximal ends but taper toward their distal ends. The tapered construction provides the core wires with a degree of distal flexibility that helps the catheter advance along a vasculature to a site of interest without kinking. Moreover, the core wires greatly improve the torsional rigidity of the catheter so that rotation of the catheter's proximal end translates into a substantially equivalent rotation at the distal end. If desired, shaping ribbons are provided in the catheter body adjacent to the distal ends of the core wires. The shaping ribbons can be pre-bent before a surgical procedure to help the physician advance the catheter along the vasculature. Finally, the core wires provide the ability to push the catheter through the vasculature without the need for the catheter to go over a guidewire already in-situ in the vasculature. 1. A catheter , comprising:a) a catheter body comprising an outer wall extending longitudinally from a catheter proximal end to a catheter distal end;b) a first catheter lumen extending through the catheter body to the catheter proximal and distal ends; andc) at least a first core wire residing in the catheter body, wherein the first core wire has a first core wire proximal end disposed adjacent to but spaced from the catheter proximal end and a first core wire distal end disposed adjacent to but spaced from the catheter distal end.2. The catheter of claim 1 , wherein the first core wire has at least one first tapered portion intermediate a first proximal cylindrical portion and a first distal cylindrical portion.3. The catheter of claim 1 , wherein the first core wire has at least one first tapered portion intermediate a first proximal cylindrical portion and a first distal ribbon-shaped portion.4. The catheter of claim 3 , wherein a first shaping ribbon resides in ...

CATHETER

A catheter can efficiently transmit an operator's pushing force to a distal end of the catheter with a reduced risk of getting caught at a curved region of a lumen (e.g., a blood vessel, bile duct, pancreatic duct or the like). The catheter includes a first core wire and a second core wire disposed between an inner tube and an outer tube. The second core wire can move to an optimal position depending on external forces exerted at a curved region of the lumen when the catheter is inserted into the curved region. Therefore, there is a reduced risk that the first core wire and the second core wire will interfere with each other, which would prevent the catheter from bending along the lumen and potentially break one or both of the first core wire and the second core wire. 1. A catheter comprising:an outer tube;an inner tube disposed within the outer tube;a first core wire disposed between the outer tube and the inner tube, the first core wire being fixed to the outer tube or the inner tube; anda second core wire disposed between the outer tube and the inner tube and disposed parallel to the first core wire, the second core wire being capable of moving circumferentially around the inner tube and in an axial direction of the catheter.2. The catheter according to claim 1 , further comprising a portion in which a cross-sectional area of the second core wire is smaller than a cross-sectional area of the first core wire.3. The catheter according to claim 1 , further comprising a restriction part provided at the first core wire or the second core wire claim 1 , wherein the restriction part restricts distal movement of the second core wire.4. The catheter according to claim 3 , wherein the restriction part is provided at the first core wire and is positioned distally to a distal end of the second core wire.5. The catheter according to claim 4 , wherein the restriction part is an annular part that protrudes from the first core wire and restricts the distal movement of the second ...

OPENING SYSTEM FOR IMPROVING CATHETER DELIVERY

A ball-tipped mandrel, separate or integrated on a device delivery assembly, can be used to ease delivery and/or retrieval of an ancillary device within a body vessel having tortuous anatomy. A ball-tipped mandrel can be moved through a catheter as a part of a preparation procedure prior to insertion into a body vessel of a patient. A ball-tipped mandrel can be moved through a catheter during or after insertion into a body vessel of a patient in preparation for delivery of an ancillary device. A ball-tipped mandrel can be integrated onto the distal portion of a device to produce dilation during device delivery. 1. A method of treating a catheter , comprising:moving an enlarging member of an expander longitudinally within a lumen of a catheter, while the catheter is outside a patient, wherein an outer cross-sectional dimension of the enlarging member is (i) between 0.0002″ and 0.0006″ larger than a first inner cross-sectional dimension of the lumen in an unrestrained condition and/or (ii) between 1% and 3% larger than the first inner cross-sectional dimension of the lumen.2. The method of claim 1 , further comprising claim 1 , inserting the catheter into a body vessel of a patient.3. The method of claim 2 , wherein the inserting occurs within 1 day after the moving.4. The method of claim 2 , wherein the inserting occurs within 1 hour after the moving.5. The method of claim 1 , wherein the moving comprises passing the enlarging member from a first location distal to a distal end of the catheter to a second location proximal to a proximal end of the catheter.6. A system for treating a catheter claim 1 , comprising:a catheter having a lumen with an inner cross-sectional dimension; andan expander comprising an enlarging member having an outer cross-sectional dimension;wherein an outer cross-sectional dimension of the enlarging member is (i) between 0.0002″ and 0.0006″ larger than a first inner cross-sectional dimension of the lumen in an unrestrained condition and/or (ii ...

Reduced cavitation in catheter removal

This invention concerns urinary catheterizing and identifies a cavitation occurring at the moment of catheter removal after catheterizing drainage is completed as the source of a transient damaging problem, and shows that venting to atmosphere of the catheter tip prior to the catheter removal prevents or reduces this transient damaging problem. The venting to atmosphere prevents a transient and partial vacuum formation for a transient cavitation. The invention disclosure shows the vent and method for preventing or reducing this transient cavitation damage. 1. A urinary catheter wherein the improvement comprises reduction of urinary transient-cavitation vacuum-collapse damage at a completed-catheterizing catheter removal from a configured catheter urethra by inserting an independent vent line to the configured catheter tip followed by the simultaneous removal of both the configured catheter and the independent vent line from the configured urethra.2. A catheter as in wherein the configured catheter and independent vent line simultaneous removal is done after insertion of the independent vent line.3. An apparatus for removing human urine via a configured catheter inserted through a lubricated urethra claim 1 , to a configured urinary parts region comprising a bladder and sphincter valves and ureters claim 1 , and an independent vent line claim 1 , for reducing cavitation generation claim 1 , said independent vent line inserted through the configured catheter discharge lumen to the configured catheter tip at catheterizing drainage completion to vent the configured urinary parts region.4. An apparatus as in wherein the independent vent line is separate from the configured catheter and of a length sufficient to extend from the configured catheter lumen for urine discharge to the configured catheter tip and to be controllable over the configured catheter length by a surplus length of independent vent line length over the configured catheter length.5. An apparatus as in ...

INTRODUCER

An introducer is configured to distinguish an introducer provided with a sheath tube whose wall thickness is reduced, from an introducer provided with a sheath tube whose wall thickness is not reduced, and to recognize the relationship between the inner diameter and the outer diameter for the sheath tube in which the wall thickness is reduced. The introducer includes an introducer sheath and a three-way stopcock portion. The introducer further includes a first information piece on at least one of the introducer sheath and the three-way stopcock portion and has an inner diameter dimension of the sheath tube as an index. Furthermore, a second information piece having an outer diameter dimension of the sheath tube as an index is on at least one of the introducer sheath and the three-way stopcock portion. 1. An introducer comprising:an introducer sheath including an elongated hollow sheath tube and a sheath hub which is provided at a proximal side of the sheath tube and provided with an insertion port configured to permit a dilator to be inserted into the insertion port;a three-way stopcock portion including a connection tube having one end configured to be connected to the sheath hub, and a three-way stopcock main body which is connected to the other end of the connection tube; anda first information piece on at least one of the introducer sheath the three-way stopcock portion and which identifies the inner diameter dimension of the sheath tube; anda second information piece on at least one of the introducer sheath and the three-way stopcock portion and which identifies the outer diameter dimension of the sheath tube.2. The introducer according to claim 1 ,wherein the first information piece or the second information piece on the three-way stopcock portion is shown on at least one of the connection tube and the three-way stopcock main body, andwherein the first information piece or the second information piece on the introducer sheath is shown on at least one of the ...

Channel tube for endoscope

The channel tube for endoscope according to the present invention is provided with: an inner-layer tube inside which a through hole extending in a longitudinal direction is formed, the inner-layer tube having as a base material thereof an elastomer or a flexible resin; an elastomer layer comprising a polymer elastomer, the elastomer layer being disposed so as to cover the outside of the inner-layer tube, and the surface of the elastomer layer being exposed to the outside; a reinforcing layer part including a flexible reinforcing member, the reinforcing layer part being disposed so as to surround the inner-layer tube; and a buffer layer part which deforms more readily than the reinforcing layer part, the buffer layer part being layered on the reinforcing layer part and disposed between the inner-layer tube and an outer peripheral surface of the elastomer layer.

BLADDER CATHETER FOR THE MINIMALLY INVASIVE DISCHARGE OF URINE

The invention is directed to a device in the form of a tube or catheter for draining and/or sealing a natural or artificial bladder outlet, comprising a shaft body that can be applied from extracorporeal into a bladder of the patient, as well as a balloon that surrounds the shaft body like a cuff and is placed in the bladder for the purpose of a vesical anchoring of the shaft body in the bladder, wherein the shaft body, which is produced by means of molding, is having a profile with a wavy corrugation, providing the shaft body with a radial stability and with a kink-free axial bending property. 1. A device in the form of a tube or catheter for draining and/or sealing a natural or artificial bladder outlet , comprisinga shaft body that can be applied from extracorporeal into a bladder of the patient, as well asa balloon that surrounds the shaft body like a cuff and is placed in the bladder for the purpose of a vesical anchoring of the shaft body in the bladder,wherein the shaft body, which is produced by means of molding, is having a profile with a wavy corrugation, providing the shaft body with a radial stability and with a kink-free axial bending property.2. The device according to claim 1 , characterized in that the balloon is made from a thin-walled balloon soft-foil material claim 1 , having a wall-thickness of 5 to 15 micron claim 1 , and is preferably manufactured by a blow-molding process from a pre-extruded tubing.3. The device according to claim 1 , characterized in that the balloon is pre-shaped to its working dimensions during manufacture and rests upon the shaft body in an only incompletely filled claim 1 , flaccid state claim 1 , the filling pressure inside the balloon thereby adapting to a pressure that is acting inside the bladder physiologically.4. The device according to claim 1 , characterized in that an envelope of the balloon has a durometer reading of 70A to 80A claim 1 , or 85A to 95A or of 55D to 65D on the Shore Scale.5. The device according ...

Catheter Comprising a Flexible Flat Cable and FPCB and Method for Producing It

A catheter includes a catheter tube and a Flexible Printed Circuit Board, FPCB, wherein the FPCB covers essentially the catheter circumference for predetermined FPCB transducer segment length, especially at the distal portion, wherein the FPCB in the FPCB transducer segment includes a scaffold structure with a plurality of FPCB free spaces and one FPCB free surface portion creating maximum mechanical stability with the least amount of material and a FPCB scaffold structure which ensures maximum flexibility. The FPCB includes transducer patches which are connected by traces on the straight scaffolds of the scaffold structure. The FPCB free spaces are configured for preventing, circumventing and/or compensating the kinking behavious of the catheter tube. 2. The catheter according to claim 1 , wherein the FPCB free surface portion and the FPCB free spaces constitute from 10% to up to 95% of surface coverage of a lateral surface of a cylinder providing the FPCB transducer segment.3. The catheter according to claim 1 , wherein for any two directions on the catheter circumference claim 1 , wherein one of the two directions being orthogonal to the other direction claim 1 , there is at least one FPCB free space on a lateral surface of a cylinder providing the FPCB transducer segment.4. The catheter according to claim 1 , wherein the FPCB surrounded free spaces have a shape of a polygon with a plurality of FPCB corners and FPCB edges.5. The catheter according to claim 4 , wherein a shape of the polygon is both axial-symmetric and non-axial-symmetric with the plurality of FPCB edges and FPCB corners constituting essentially the shape of the polygon.6. The catheter according to claim 5 , wherein the FPCB free spaces are arranged in transducer patch clusters along a longitudinal direction or a transverse circumferential line to form the scaffold structure.7. The catheter according to claim 1 , wherein at least one of the predetermined placed transducer patches is positioned on ...

SHEATH RETAINER DEVICES, SYSTEMS AND METHODS

In general, medical sheath systems that can employ retainer devices having a plurality of channels configured to retain a sheath assembly in one or more curved configurations are described. In one embodiment, a retainer device may releasably retain a curvable tube of the sheath assembly in any of multiple curved configurations that range, for example, in selectable increments between 0° to 180°. 1. A sheath assembly , comprising:a curvable tube comprising a first end having a connector and a second end comprising a port configured to receive an interventional tool, the curvable tube configured to bend between a curved configuration and a substantially straight configuration in which the first end is linearly distal to the second end; anda retainer having a plurality of channels configured to releasably retain the curvable tube in first and second curved configurations, the curvable tube forming a 180° curve when the curvable tube is retained by the retainer in the first curved configuration and forming a 90° curve when the curvable tube is retained by the retainer in the second curved configuration.2. The sheath assembly of claim 1 , wherein the plurality of channels comprise a first channel defining a first channel axis and a second channel defining a second channel axis claim 1 , the first channel axis parallel to and offset from the second channel axis.3. The sheath assembly of claim 1 , wherein the plurality of channels comprise a first channel defining a first channel axis and a second channel defining a second channel axis claim 1 , the first channel axis being coaxial with the second channel axis.4. The sheath assembly of claim 1 , wherein the plurality of channels comprise a first channel defining a first channel axis and a second channel defining a second channel axis claim 1 , the first channel axis angled 90° relative to the second channel axis.5. The sheath assembly of claim 2 , wherein the plurality of channels comprise a third channel defining a third ...

SINGLE OPERATOR INTRACRANIAL MEDICAL DEVICE DELIVERY SYSTEMS AND METHODS OF USE

A rapid exchange microcatheter for accessing the intracranial neurovasculature. A side opening through the sidewall is located a first distance proximal to the distal-most tip. A proximal opening located proximal to the side opening is a second distance from the distal-most tip. A distal, reinforced catheter portion extends between a distal end region to a point near the side opening. A proximal, reinforced catheter portion extends a distance from a point near the side opening towards the proximal end of the catheter body. The side opening is positioned within a gap between a proximal end of the distal reinforced catheter portion and a distal end of the proximal reinforced catheter portion. A payload of a cerebral treatment device is housed within the lumen proximal to the side opening. Related devices, systems, and methods are disclosed. 1. An intravascular access catheter for advancing a medical device for intraluminal medical procedures within the neurovasculature , comprising:a flexible elongate body having a proximal end, a distal end, and a lumen extending therebetween, the flexible elongate body comprising a plurality of regions including an enlarged distal tip region defined by a proximal taper, a central continuous diameter region, and a distal taper, wherein at least two of the plurality of regions of the flexible elongated body are comprised of unreinforced polymer;a first marker disposed at the distal end of the distal taper of the flexible elongate body; anda proximal extension extending proximally from the proximal end of the flexible elongate body, the proximal extension having a lumen communicating with the lumen of the flexible elongate body, wherein the proximal extension is formed of two or more different materials.2. The catheter of claim 1 , wherein the unreinforced polymer is Pebax.3. The catheter of claim 1 , wherein the plurality of regions of the flexible elongate body comprises claim 1 , a proximal region claim 1 , an intermediate region ...

RIBBON EXTRUSION SEGMENTS FOR CATHETER CONSTRUCTION

The designs presented can be for a highly flexible and kink-resistant catheter device for vascular applications. The device can have a more flexible distal section so that the catheter is capable of navigating highly tortuous areas of the anatomy and increasingly stiffer sections towards the more proximal region of the catheter. The device can have tubular polymer segments making up the shaft core and can have one or more helical ribbon segments arranged as coils and extending in a spiral around the outer surface of the tubular segments. The variability in how the ribbon segments are cut and the amount of material left in different regions can control the stiffness changes along the axial length of the catheter. By combining various tubular segments of different durometer beneath the helical segments, another design variable can be used to create transitions and force transmission capabilities not previous possible with less materials.

Treatment Method Using Catheter Assembly and Catheter Assembly

A catheter assembly includes an outer catheter that includes a tubular outer catheter body and an outer catheter hub, and an inner catheter that includes an inner catheter body and an inner catheter hub. The inner catheter body is positionable in the outer catheter body, and the outer catheter hub is connectable to the inner catheter hub. The inner catheter body includes a shaft extending from the inner catheter hub, and a tubular body disposed at the distal end of the shaft and possessing an inner catheter lumen. When the outer catheter hub is connected to the inner catheter hub, a portion of the tubular body is distal of the distal-most end of the outer catheter body, a portion of the tubular body is distal of the proximal-most end of the outer catheter body, and a proximal end portion of the tubular body is in the outer catheter lumen. 1. A catheter assembly comprising:an outer catheter that includes a tubular outer catheter body and an outer catheter hub, the tubular outer catheter body possessing a distal-most end and a proximal-most end, the outer catheter hub possessing a proximal end, and the outer catheter hub being disposed at a proximal end of the outer catheter body;an inner catheter that includes an inner catheter body and an inner catheter hub, the inner catheter body possessing a distal-most end and a proximal end, the inner catheter body being configured to be positioned in the outer catheter body, the inner catheter hub being disposed at a proximal end of the inner catheter body, the inner catheter hub possessing an inner catheter hub lumen, the outer catheter hub being connectable to the inner catheter hub;the inner catheter body including a shaft extending from the inner catheter hub to a distal end of the shaft, and a tubular body disposed at the distal end of the shaft and possessing an inner catheter lumen which opens to outside the tubular body at both a distal portion and a proximal portion of the tubular body such that a guide wire is ...

CATHETERS AND METHODS FOR MAKING THEM

Catheters, sheaths, or other tubular devices are provided that include a proximal end, a distal end sized for introduction into a patient's body, and a steerable distal portion carrying a plurality of electrodes. The tubular device includes a primary lumen extending between the proximal and distal ends; a steering element lumen adjacent the primary lumen; a plurality of wires extending proximally from the electrodes, and reinforcement members including windings extending helically along at least the distal portion, at least some of the windings passing between the primary and steering element lumens and wires, and at least some of the windings surrounding the primary lumen and one or both of the steering element lumen and the wires. In one embodiment, a steering element is slidably disposed within the auxiliary lumen. Apparatus and methods for making such tubular devices are also provided. 1. A method for making a tubular body , comprising:directing a primary mandrel along a central axis of a braiding apparatus such that the primary mandrel is surrounded by a plurality of reinforcement carrying elements;directing one or more elongate conducting elements adjacent to the primary mandrel;wrapping one or more reinforcement members from the reinforcement carrying elements helically around the primary mandrel such that some windings of the one or more reinforcement members surround the primary mandrel and pass between the primary mandrel and the one or more reinforcement members and some windings of the one or more reinforcement members surround both the primary mandrel and the one or more elongate conducting elements;applying an outer jacket around the primary mandrel and the one or more elongate conducting elements after wrapping the one or more reinforcement members therearound; andremoving the primary mandrel to define a primary lumen within the tubular body.2. The method of claim 1 , further comprising directing a secondary mandrel adjacent to the primary mandrel and ...

INTRODUCER

An introducer sheath in which a sheath tube can be easily restored to a state before being kinked even when the sheath tube of the introducer sheath is bent to cause kinking during medical practice. An introducer sheath including: a sheath tube which has a central cavity structure continuing from a proximal portion to a distal portion; and a sheath hub which is connected to the proximal portion of the sheath tube. A return angle of a kinked portion when the sheath tube is bent by 180° is 0° to 15°. 1. An introducer sheath comprising:a sheath tube which has a lumen structure continuing from a proximal portion to a distal portion; anda sheath hub which is connected to the proximal portion of the sheath tube,wherein a return angle of a kinked portion when the sheath tube is bent by 180° is 0° to 15°.2. The introducer sheath according to claim 1 ,wherein the return angle of the kinked portion when the sheath tube is bent by 180° is 2.5° to 12.5°.3. The introducer sheath according to claim 1 ,wherein a minor axis length/major axis length ratio of a cross section of a return shape of the kinked portion when the sheath tube is bent by 180° is 0.50 to 0.90.4. An introducer sheath comprising:a sheath tube which has a lumen structure continuing from a proximal portion to a distal portion; anda sheath hub which is connected to the proximal portion of the sheath tube,wherein a minor axis length/major axis length ratio of a cross section of a return shape of a kinked portion when the sheath tube is bent by 180° is 0.50 to 0.90.5. The introducer sheath according to claim 4 ,wherein a return angle of the kinked portion when the sheath tube is bent by 180° is 0° to 15°.6. The introducer sheath according to claim 4 ,wherein the minor axis length/major axis length ratio of the cross section of the return shape of the kinked portion when the sheath tube is bent by 180° is 0.55 to 0.85.7. The introducer sheath according to claim 1 ,wherein a wall thickness of the sheath tube is 0.050 ...

Real-Time Sampling System

A device and system for allowing real-time viewing of a procedure beyond a distal end of an endoscope. An exemplary device includes a sheath that has at least two lumens and a handle. The handle includes a connector that connects to a proximal end of an endoscope, a shaft portion that rotatably connects to a proximal end of the connector and a manifold that is slidably received by the shaft portion. The manifold connects to the sheath and allows for insertion of a radial ultrasound probe and a medical tool into the sheath. A stopping device in the manifold avoids accidental needle deployment. 1. A device comprising:a sheath comprising at least two lumens; and a connector configured to connect to a proximal end of an endoscope;', 'a shaft portion configured to be rotatably connected to a proximal end of the connector; and', a distal end configured to connect to the sheath, the distal end comprising at least two lumens, wherein each lumen has a longitudinal axis that aligns with a respective one of the at least two lumens of the connected sheath;', 'a first proximal port having a longitudinal axis configured to match the longitudinal axis of one of at least two lumens of the distal end, wherein the first proximal port is configured to receive a radial ultrasound probe; and', 'a second proximal port configured to receive a medical tool, the second proximal port comprises a longitudinal axis that is at an angular relationship to the longitudinal axis of a second one of the two lumens of the distal end, wherein the second proximal port is configured to allow the medical tool to pass to the second one of the two lumens of the distal end; and', 'a lock mechanism configured to arrest distal motion of a medical tool handle shaft below a predefined threshold value., 'a manifold configured to be slidably received by the shaft portion, the manifold comprising], 'a handle comprising2. The device of claim 1 , wherein the shaft portion includes a longitudinal slot configured to ...

Strain Management in Stent Delivery System

A delivery system for a medical implant and a method of delivering the medical implant. The delivery system includes an inner catheter and an outer catheter. The inner catheter includes a wire coil disposed between an inner tube and an outer tube, the wire coil having gaps between turns of the coil at a proximal and a distal region thereof. The outer catheter is disposed about the inner catheter. The system includes a flow path for liquid from a proximal end to a distal end thereof, the flow path including a radially extending portion through the gaps. The method includes inserting the delivery system into a body lumen, injecting visualizing fluid into the proximal end of the system, the visualizing fluid moving through the flow path and exiting the distal end of the system, and retracting the outer catheter to release the medical implant. 1. A delivery system for a medical implant comprising:an inner catheter including a wire coil disposed between an inner tube and an outer tube, the wire coil having a plurality of gaps between turns of the coil at a proximal and a distal region of the coil;an outer catheter disposed about the inner catheter;a pusher element abutting a distal end of the wire coil;anda flow path for liquid from a proximal end through a distal end of the system past a distal end of the inner tube of the inner catheter, the flow path including a portion passing through the gaps.2. The delivery system of wherein the outer tube is disposed over an intermediate region of the wire coil having a closed-coil structure.3. The delivery system of wherein the outer tube comprises PTFE configured to fit tightly over the wire coil preventing adjacent turns of the coil from overlapping.4. The delivery system of wherein the flow path in the intermediate region is bounded by the inner tube and the outer tube.5. The delivery system of whereina distal end of the wire coil is disposed over at least a section of the shoulder portion to secure the position of the pusher ...

Side branch balloon

An improved balloon catheter structure includes a beveled distal tip, a reinforced distal portion, and an elastic or split sleeve over at least a portion of the balloon. The balloon may have a short length and a marker at its midline. The catheters are particularly useful for crossing through stent walls at vessel bifurcations.

COAXIAL BI-DIRECTIONAL CATHETER

A deflectable catheter including an outer member having a proximal portion and a distal portion, an elongated column member extending distally from the outer member and an inner member positioned coaxial with the outer member and attached to the column member. The inner member extends distally of the outer member and has a distal tip portion. A reinforcement member is positioned over the column member to restrict axial movement of the column member such that when one of the inner member or outer member is moved with respect to the other, axial compression of the column member is restricted by the reinforcement member causing the distal tip portion of the inner member to deflect laterally. 120-. (canceled)21. A deflectable catheter comprising:an outer tubular member having a proximal section, a distal section and a lumen,an inner tubular member having a proximal section and a distal section, the proximal section of the inner member being stiffer than the distal section of the inner member, the inner member positioned within the lumen of the outer member, one or both of the inner member and outer member being movable relative to the other, the inner member having a lubricious inner liner to reduce the coefficient of friction to aid in guidewire movement within the inner member;an elongated column member, the column member fixed to the inner member; anda restriction member positioned over the column member, the restriction member restricting movement of the column member;wherein a distal tip portion of the catheter is deflectable in a first direction from a longitudinal axis of the catheter.22. The catheter of claim 21 , wherein the column member is composed of one of a wire or ribbon having a cross-sectional dimension less than a cross-sectional dimension of the distal section of the inner member.23. The catheter of claim 21 , wherein the column member is external the distal section of the inner member.24. The catheter of claim 23 , wherein the distal section of the ...

INTRODUCER

An introducer is configured to distinguish an introducer provided with a sheath tube whose wall thickness is reduced, from an introducer provided with a sheath tube whose wall thickness is not reduced, and to recognize the relationship between the inner diameter and the outer diameter for the sheath tube in which the wall thickness is reduced. The introducer includes an introducer sheath and a three-way stopcock portion. The introducer further includes a first information piece on at least one of the introducer sheath and the three-way stopcock portion and has an inner diameter dimension of the sheath tube as an index. Furthermore, a second information piece having an outer diameter dimension of the sheath tube as an index is on at least one of the introducer sheath and the three-way stopcock portion. 1. An introducer comprising:an introducer sheath including an elongated hollow sheath tube and a sheath hub which is provided at a proximal side of the sheath tube and provided with an insertion port configured to permit a dilator to be inserted into the insertion port;a three-way stopcock portion including a connection tube having one end configured to be connected to the sheath hub, and a three-way stopcock main body which is connected to the other end of the connection tube; anda first information piece on at least one of the introducer sheath and the three-way stopcock portion and which identifies an information of the inner diameter dimension of the sheath tube;a second information piece on at least one of the introducer sheath and the three-way stopcock portion and which identifies an information of the outer diameter dimension of the sheath tube;the first information piece is a color indicating a first Fr size of the sheath tube;the second information piece is a color indicating a second Fr size which is smaller than the first Fr size indicated by the first information piece; andwherein the first information piece and the second information piece are different ...

INTERMITTENT URINARY CATHETER WITH CONICAL LUMEN

An intermittent urinary catheter has a catheter body extending from an open distal end to a proximal end, with the proximal end configured for insertion into an urethra. A lumen is formed longitudinally in the catheter body. Eyelets are formed through a wall of the catheter body to communicate with the lumen. Each eyelet is located equidistantly from the proximal end of the catheter body. The lumen is conical with a cross-sectional area of the lumen measured at a distal end portion of the catheter body larger than a cross-sectional area of the lumen measured at a proximal end portion of the catheter body. 1. A urinary catheter comprising:an intermittent urinary catheter comprising a catheter body extending from an open distal end to a proximal end, with the proximal end configured for insertion into an urethra;a lumen formed longitudinally in the catheter body; anda plurality of eyelets formed through a wall of the catheter body and communicating with the lumen, where each eyelet of the plurality of eyelets is located equidistantly from the proximal end of the catheter body;wherein the lumen is conical with a cross-sectional area of the lumen measured at a distal end portion of the catheter body larger than a cross-sectional area of the lumen measured at a proximal end portion of the catheter body.2. The urinary catheter of claim 1 , wherein the intermittent urinary catheter provides a volumetric flow rate for liquid flowing through the lumen of at least 15 ml per second at a pressure of 400 mm HO.3. The urinary catheter of claim 1 , wherein the catheter body includes a hydrophilic surface coating.41. The urinary catheter of claim 1 , wherein the catheter body is conical with a cross-sectional area of the catheter body measured at a distal end portion of the catheter body larger than a cross-sectional area of the catheter body measured at a proximal end portion of the catheter body.5. The urinary catheter of claim 1 , wherein the plurality of eyelets comprises three ...

Over-the-Needle Catheter Sleeve

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having a sleeve configured thereon. The catheter includes a body having an outer diameter. The body also includes a proximal end and a distal end and defines a lumen extending from the proximal end to the distal end. A needle is configured within the lumen of the catheter and extends from the proximal end to the distal end. The sleeve is configured around a portion of the outer diameter of the catheter that passes through an insertion site of the catheter. Further, the sleeve includes a length extending from a first end to a second end and is configured to prevent the catheter from collapsing along the length of the sleeve. In addition, the sleeve is configured to prevent leakage from the insertion site of the catheter.

INTRACARDIAC CAPSULE AND EXPLANTATION ACCESSORY

An autonomous capsule includes a tubular body provided at its distal end with an anchoring screw, and in its proximal region of a capture groove. An explantation accessory includes a reinforced catheter combined with a flexible wire which can slide in the catheter and has a deformable loop which can be clamped by gradual introduction of its ends in the catheter under the effect of a traction exerted on the wire. During tightening, the capture groove receives the wire loop, allowing, after complete tightening, to secure in tension and rotation an assembly formed by the catheter, the capsule, and the wire. The reinforced catheter is then used to transmit a tensile force and an axial torque from its proximal end to its distal end, allowing safe unscrewing of the capsule and its extraction through the patient venous network. 1. An intracardiac capsule assembly , the assembly comprising:an autonomous capsule comprising a tubular body having at a distal end a screw anchoring member adapted to penetrate tissue of a wall of an organ of a patient; and a catheter; and', 'a flexible wire, having at a distal end a loop;', 'wherein, in a proximal region, the capsule comprises a capture member adapted to receive the loop of the wire during a clamping thereof and to secure in traction and rotation the intracardiac capsule assembly formed by the catheter, the capsule, and the wire after clamping of the loop;', 'wherein the capture member comprises at least one capture groove formed within the proximal end region of the capsule, each groove having a diameter less than a diameter of the tubular body and a contour, wherein the contour is an open contour comprising two ends which proximally open adjacent to an axial end point of the tubular body; and', 'wherein a portion of the proximal end region of the capsule in which the at least one capture groove is formed has a diameter substantially the same as the diameter of the tubular body., 'an explantation accessory, including2. The ...

ELASTOMERIC STRAIN RELIEF LAYERING FOR CATHETERS

A medical device configured to be flexible and maintain kink resistance while also reducing strain fractures. The medical device may include an elongate tubular shaft defining a lumen extending from a proximal portion to a distal portion. The elongate tubular shaft may comprise an outer jacket forming an outer surface of the elongate tubular shaft, a support member including at least one filament extending in a helical configuration along at least a portion of the a length of the elongate tubular shaft, and a strain relief layer comprising a material that has a modulus of elasticity less than a modulus of elasticity of the outer jacket, the strain relief layer positioned at least between adjacent windings of the support member. The strain relief layer and the support member may collectively form an inner surface of the elongate tubular shaft. 1. A medical device , comprising: an outer jacket forming an outer surface of the elongate tubular shaft;', 'a support member including at least one filament extending in a helical configuration along at least a portion of the a length of the elongate tubular shaft; and', 'a strain relief layer comprising a material that has a modulus of elasticity less than a modulus of elasticity of the outer jacket, the strain relief layer positioned at least between adjacent windings of the support member;, 'an elongate tubular shaft defining a lumen extending from a proximal portion to a distal portion, the elongate tubular shaft comprisingwherein the strain relief layer and the support member collectively form an inner surface of the elongate tubular shaft.2. The medical device of claim 1 , wherein the strain relief layer has a thickness approximately equal to a thickness of the at least one filament in a radial direction.3. The medical device of claim 1 , wherein a thickness of the outer jacket is generally uniform over a length of the elongate tubular shaft.4. The medical device of claim 1 , wherein the strain relief layer is further ...

USABLE-LENGTH-SELECTABLE CATHETER TO TREAT VASCULAR PATHOLOGIES

The current document is directed to usable-length-selectable catheters that employ usable-length-selectable catheters to treat malformations, constrictions, obstructions, lesions, and blockages within patients' blood vessels. The usable length of the shaft of a usable-length-selectable catheter, to which the current application is directed, can be adjusted over a set of lengths prior to and during medical procedures. 1100. A usable-length-selectable catheter system () comprising:{'b': 110', '115, 'a catheter () comprising a catheter shaft ();'}{'b': '120', 'a lock-grip ();'}{'b': '130', 'a mandrel () with handle; and'}{'b': 113', '116', '115', '115, 'two or more guide-wire exit ports (, ), disposed laterally on the catheter shaft () at different axial positions of the catheter shaft ();'}{'b': 130', '131', '113', '116, 'characterized in that the mandrel () is designed such that its tip () can selectively be positioned relative to each one of the guide-wire exit ports (, ) such that a guide-wire can be guided through the selected guide-wire exit port.'}2131130. The catheter system according to claim 1 , wherein the tip () of the mandrel () is shaped as a semispherical deflection surface.3130232133134. The catheter system according to claim 1 , wherein the mandrel () further includes a mandrel shaft () that includes two or more markings ( claim 1 , ).4. The catheter system according to claim 3 , wherein said two or more markings independently of each other provide visual claim 3 , angiographic or haptic feedback to a treatment provider.5133134232131130. The catheter system according to claim 3 , wherein said two or more markings ( claim 3 , ) are positioned on the mandrel shaft () such that they indicate whether the tip () of the mandrel () is positioned relative to a selected guidewire exit port such that a guide-wire can be guided through the selected guide-wire exit port.6131130. The catheter system according to claim 1 , wherein the tip () of the mandrel () is ...

METHODS FOR PLACING A SYMPATHETIC BLOCK, CATHETERS, CATHETER ASSEMBLIES AND RELATED METHODS

Methods of providing sympathetic nerve blocks comprise inserting a portion of a catheter into a subject. A distal end of the catheter is positioned on a lateral side of at least one vertebra of a vertebral column of the subject proximate to a portion of a sympathetic nervous system of the subject. A medication is supplied through the catheter to effect a sympathetic nerve block in the subject. Methods of alleviating pain in lower extremities of subjects comprise inserting a portion of a catheter into a subject and supplying a medication through the catheter. Catheters and catheter assemblies may be used in administering such sympathetic nerve blocks. Catheters and catheter assemblies may be used in administering medication to one or more of a peripheral nervous system of a subject and a spinal cord of a subject. 1. A method of providing a sympathetic nerve block to a subject in need thereof , the method comprising:implanting a portion of a catheter into the subject;positioning a distal end of the catheter on a lateral side of at least one vertebra of the subject's vertebral column proximate to a portion of a sympathetic nervous system of the subject;securing a distal portion of the catheter with at least one anchor element extending from an outer surface of the catheter and positioned proximate the distal end of the catheter by engaging the at least one anchor element with at least a portion of the subject when the catheter is inserted within the subject; anddelivering a medication to the subject through the catheter to create a sympathetic nerve block.2. The method according to claim 1 , further comprising inserting a portion of an introducer cannula into the subject and inserting the portion of the catheter through the introducer cannula.3. The method according to claim 2 , further comprising:removing a support structure of the introducer cannula; andremoving the introducer cannula.4. The method according to claim 1 , further comprising securing a proximal portion ...

INTRODUCER SET

An introducer set () for providing vascular access in a patient's body comprises an Introducer sheath () and a dilator (). The introducer sheath () has a tubular body () made of flexible material with a distal portion (), a proximal portion () and an inner surface, the proximal portion () being configured to be inserted into a patient's vessel to allow a medical device () to be inserted through the introducer sheath () into the patient's vessel. The tubular body () of the introducer sheath has a wall thickness (d) of 0.3 mm or less. The dilator () has a body () with a proximal portion (), a distal portion () and an outer surface, the dilator () being insertable into the introducer sheath () such that its proximal portion () extends proximally of the introducer sheath () when the dilator () is inserted in the introducer sheath (). At least one of the dilator () and the introducer sheath () comprises a stiffening structure () imparting stiffness to the tubular body () of the introducer sheath (), wherein said stiffening structure () can be released, removed or otherwise deactivated. 1. An introducer set for providing vascular access in a patient's body , comprising:an introducer sheath having a tubular body with a wall thickness of 0.3 mm or less, the tubular body having a distal end, a proximal end, and an inner surface, and the proximal end being configured to be inserted into a patient's vessel; anda dilator having a dilator body with a tapered proximal end, a distal end, an outer surface, and a stiffening structure, the dilator body being insertable into the introducer sheath,wherein the stiffening structure is configured to be activated when the dilator body is inserted within the introducer sheath and at least a portion of the tapered proximal end of the dilator body extends proximally of the proximal end of the introducer sheath, causing at least a portion of the stiffening structure to expand radially and contact at least a portion of the inner surface of the ...

STEERABLE ENDOLUMINAL DEVICES AND METHODS

A steerable endoluminal device adapted for delivery into a patient's vasculature. The device includes a tubular member having a distal deflection portion that extends to the distal end and a main body portion that extends from the deflectable portion to the proximal end, the tubular member further including a stiff portion extending along the distal deflection portion, and being formed of polymeric material, which is disposed circumferentially adjacent to the stiff portion. The stiff portion is made of a material that has an elastic modulus greater than the elastic modulus of the polymeric material. A pull wire extends between the proximal end and the distal end of the tubular member and is attached to the distal deflection portion to control deflection of the distal deflection portion of the tubular member. 1. A steerable introducer sheath system adapted for delivery into a patient's vasculature , said steerable sheath system comprising:an introducer sheath having a proximal end and a distal end and a lumen extending therethrough, said introducer sheath having a distal deflection portion that extends to said distal end and a main body portion that extends from said deflection portion to said proximal end, wherein said introducer sheath comprises a wall having a coil embedded within the wall of the introducer sheath and a braid disposed coaxially about the coil and embedded within the wall of the introducer sheath; anda pull wire extending between said proximal end and said distal end of said introducer sheath and having first and second ends, said first end being secured to said distal deflection portion to control deflection of the distal deflection portion of said introducer sheath; whereinthe deflection portion is characterized by a distal and a proximal end, and the braid terminates distally at a point proximate the proximal end of the deflection portion.2. The device of claim 1 , further comprising a handle with a lever arm coupled to said proximal end of said ...

Tube element

A tube element for a device for introduction into a body passage comprises a first tube element end and a second tube element end, wherein a longitudinal dimension is formed between the first and second tube element end. The tube element has a sheath comprising an outer wall and an inner wall. A cross-sectional element is arranged between the first and second tube element ends. The cross-sectional element contains a plurality of opening arrangements. Each opening arrangement comprises a first opening containing an insert element and a second opening, the internal pressure of which can be changed by a pressure changing means.

Segmented Catheter Structure and Improved Catheter Tip and Related Systems, Methods, and Devices

Certain embodiments herein relate to an extension catheter for positioning through a conventional guiding catheter into the vasculature of a patient, the extension catheter having a distal tubular member and a proximal elongated shaft coupled to the distal tubular member, wherein the proximal shaft has a length or section containing at least one discontinuous or segmented structure, and further wherein such structures that can be modified or varied to modify the torsional compliance characteristics of the device. Further embodiments relate to a multi-layer catheter having a protective wrap at or near the distal end of the catheter. 1. A catheter comprising:(a) a distal tube comprising a tubular wall and a tube lumen defined within the tube by the tubular wall; and (i) a first elongate member;', '(ii) a second elongate member; and', '(iii) a first sheath segment disposed around a first length of the first and second elongate members such that the first length of the first and second elongate members is disposed within the first sheath segment,', 'wherein the first and second elongate members are configured to extend distally into a portion of the distal tube., '(b) a proximal shaft operably coupled to a proximal portion of the distal tube, the proximal shaft comprising2. The catheter of claim 1 , wherein the proximal shaft further comprises a second sheath segment disposed around a second length of the first and second elongate members such that the second length of the first and second elongate members is disposed within the second sheath segment claim 1 , wherein a total length of the first and second sheath segments is less than a total length of the first and second elongate members.3. The catheter of claim 1 , wherein the proximal shaft further comprises a second sheath segment disposed around a second length of the first and second elongate members such that the second length of the first and second elongate members is disposed within the second sheath segment; ...

CATHETER WITH CURVILINEAR POLYGON CROSS-SECTIONAL SHAPE

In some examples, a catheter may include a catheter body configured such that at least one of a proximal portion or a medial portion of the catheter body has a cross-sectional shape including at least three apexes, adjacent apexes being connected by curvilinear sidewalls, the cross-section being taken substantially orthogonal to a longitudinal axis of the catheter body. In some examples, the entire catheter body has the cross-sectional shape including at least three apexes, adjacent apexes being connected by curvilinear sidewalls. In other examples, only a portion of the catheter body has the cross-sectional shape. 1. A catheter comprising:a catheter body extending between a proximal end and a distal end and defining at least one inner lumen, the catheter body comprising a proximal portion including the proximal end, a distal portion including the distal end, and a medial portion between the proximal and distal portions,wherein a cross-section of at least one of the proximal portion or the medial potion, taken substantially orthogonal to a longitudinal axis of the catheter body, has a shape including at least three apexes, adjacent apexes being connected by curvilinear sidewalls.2. The catheter of claim 1 , wherein the at least three apexes is three apexes.3. The catheter of claim 1 , wherein the at least three apexes is four claim 1 , five claim 1 , six claim 1 , seven or eight apexes.4. The catheter of claim 1 , wherein the shape is substantially symmetrical about the longitudinal axis of the catheter body.5. The catheter of claim 1 , wherein the curvilinear sidewalls are shaped substantially as arcs.6. The catheter of claim 1 , wherein each curvilinear sidewall is located between two of the apexes claim 1 , and bows radially outwardly from the two apexes.7. The catheter of claim 1 , wherein an entire length of the catheter body has a cross-sectional shape including at least three apexes claim 1 , adjacent apexes being connected by curvilinear sidewalls.8. The ...

COAXIAL BI-DIRECTIONAL CATHETER

A deflectable catheter including an outer member having a proximal portion and a distal portion, an elongated column member extending distally from the outer member and an inner member positioned coaxial with the outer member and attached to the column member. The inner member extends distally of the outer member and has a distal tip portion. A reinforcement member is positioned over the column member to restrict axial movement of the column member such that when one of the inner member or outer member is moved with respect to the other, axial compression of the column member is restricted by the reinforcement member causing the distal tip portion of the inner member to deflect laterally. 120-. (canceled)21. A bi-directional deflectable catheter comprising:an outer tubular member having a proximal end, a distal end and a first lumen;an inner tubular member having a proximal end, a distal end and a second lumen extending to the distal end, the inner member having a wall surrounding the second lumen, the inner member positioned within the first lumen of the outer member, the inner member and outer member being relatively movable; andan elongated compressible column member having a proximal end and a distal end, the column member positioned external of the wall of the inner member and radially of the second lumen, the column member fixed at a first end to the distal end of the inner member and fixed at a second end to the distal end of the outer member, wherein the elongated column member is configured to buckle in an intermediate region upon movement of one or both of the inner and outer members relative to the other member but is restrained from axial compression and therefore restrained from buckling to effect lateral deflection of a distal tip portion of the catheter, the distal tip portion of the catheter being deflectable in first and second opposing directions from a longitudinal axis of the catheter.22. The catheter of claim 21 , further comprising a ...

SEGMENTED ARCH FULCRUM SUPPORT CATHETER AND METHOD OF USE

The present disclosure teaches a medical device and method of use, employing a tube which is composed of segments and bends capable being configured into unique shape that allows said device to use the lesser (inferior) curve of aortic Arch and other vessel structures as as fulcrums of support for a guide catheter, for subsequent prevention of recoil and displacement thereof, while delivering additional catheters or devices into the distal branches of the great vessels. A method for using same. 19-. (canceled)10. An endovascular medical device comprising:a single tubular body configured for positioning within a blood vessel, the single tubular body including:a first segment having a length of at least 20 cm and an internal diameter from 0.01 Fr to 30 Fr, the first segment defining a proximal end hole;a first bend connected to the first segment;a second segment connected to the first bend, the second segment having a length between 3 cm and 35 cm and an internal diameter of from 0.01 Fr to 30 Fr, wherein the first bend includes a curvature between 55 degrees and 125 degrees such that the second segment is engageable with an arch of the blood vessel to brace the endovascular medical device therein and thereby resist recoil upon insertion of an instrument into the endovascular medical device;a second bend connected to the second segment and including a curvature between 30 degrees and 150 degrees;a third segment connected to the second bend, the third segment having a length of at least 0.5 cm and an internal diameter of from 0.01 Fr to 30 Fr;a third bend connected to the third segment and including a curvature between 30 degrees and 150 degrees; anda fourth segment connected to the third bend and defining a distal end hole, the fourth segment having a length of at least 0.5 cm and an internal diameter from 0.01 Fr to 30 Fr.11. The endovascular medical device of claim 10 , further comprising an external termination device supported by the first segment.12. The ...

NEEDLE ASSEMBLIES AND RELATED METHODS

Aspects of the present disclosure include catheter devices in which a bushing is disposed in an interior cavity of a catheter hub. The bushing has a flexible portion extending out a distal end of the catheter hub. A catheter tube is sleeved over the flexible portion. A needle hub with a needle projects through the flexible portion of the bushing and the catheter tube. The flexible portion is bendable to form at least one curve along the flexible portion. The at least one curve has a minimum bend radius when a first surface of the flexible portion is extended and a second surface opposite the first surface of the flexible portion is shortened. 1. A catheter assembly comprising:a catheter hub having a hub body defining an interior cavity;a bushing disposed at least in part in the interior cavity and having an elongated seat having a portion extending out a distal end of the catheter hub, said elongated seat comprising a first bushing half and a second bushing half located on different sides of a plane extending lengthwise of a diameter of the bushing;a catheter tube sleeved over the elongated seat including over the portion that extends out the distal end of the catheter hub or sleeved into a distal opening at a distal end of the elongated seat;a needle hub with a needle comprising a needle shaft having a needle lumen and a needle tip, the needle shaft projecting through the elongated seat of the bushing and the catheter tube in a ready to use position; andwherein the elongated seat is bendable to form at least one curve along a length thereof to prevent kinking in the catheter tube, the at least one curve having a minimum bend radius when a first surface of the first bushing half of the elongated seat is extended and a second surface of the second bushing half of the elongated seat is shortened.2. The catheter assembly of claim 1 , wherein the elongated seat comprises a plurality of alternating ridges and grooves.3. The catheter assembly of claim 2 , wherein the ...

Post Operative Wound Support Device

A wound drainage and hemostasis promoting medical device () are disclosed. A balloon () is temporary inflated and arranged outside a sheath (), in contact with tissue surrounding a wound cavity for hemostasis promotion. The drainage device comprises a fluid communication channel for wound exudate from wound. The balloon is deflated and retracted into said sheath for removal from said wound cavity. Thus the medical device is percutaneously retractable from said confined wound. 132-. (canceled)33. A hemostasis promoting medical device having:an inflatable flexible balloon for said hemostasis promotion in a wound, said balloon when inflated to an inner pressure is configured to provide a desired size of said balloon and is configured to apply a mechanical pressure at apposition with tissue in said wound;a fluid communication channel for wound exudate from said wound, said channel having a distal end arrangeable in said wound cavity, anda gas pressure source configured to provide a gas pressure lower than a gas pressure in said wound cavity to said distal end of said fluid communication channel in said wound for promoting drainage, such that said wound exudate is removeable from the wound by suction, while at the same time a positive mechanical pressure is provideable on at least a part of the tissue surrounding the wound by said balloon.34. The device of claim 33 , wherein said fluid communication channel is integrally formed with said sheath claim 33 , providing a medical drainage device with at least temporary hemostasis promoting properties.35. The device of claim 33 , wherein said balloon has a surface that comprises a pharmaceutical substance claim 33 , e.g. as coating claim 33 , e.g. of antibiotics claim 33 , coagulation promoting agents claim 33 , platelet adherence reducer.36. The device of claim 33 , wherein said balloon is permeable for nitric oxide (NO) claim 33 , and when inflated filled with a liquid releasing said NO.37. The device of claim 33 , having a ...

Swaged braided catheter and method of fabrication

A swaged braided catheter for use in various medical procedures is provided. The swaged braided catheter includes a tubular braid formed from a plurality of braided wire members. A plurality of intersections is formed by the braided wire members. The intersections are compressed defining a plurality of flattened regions along the tubular braid. The intersections have a first thickness before being compressed and a reduced second thickness after being compressed. The flattened regions with the reduced second thickness provide the swaged braided catheter with a reduced cross-sectional profile, and reduced catheter recoil. 1. A catheter comprising:a tubular braid having a proximal end a distal end, the tubular braid including a plurality of wire members braided together and a plurality of crossing points defined by crossing wire members of the braided wire members, wherein the crossing points are compressed defining a plurality of flattened regions along the tubular braid, the crossing points having an initial first thickness before being compressed and a second thickness after being compressed, wherein the second thickness is less than the first thickness.2. The catheter of claim 1 , further comprising an inner liner positioned coaxially within and in contact with the tubular braid claim 1 , the inner liner defining a lumen of the catheter claim 1 , the lumen formed through the proximal and distal ends of the tubular braid.3. The catheter of claim 1 , further comprising an outer sleeve positioned coaxially about and in contact with the tubular braid.4. The catheter of claim 1 , wherein the wire members have a round cross-section with a first diameter claim 1 , wherein the first thickness of the pre-compressed crossing points is equal to two times the first diameter claim 1 , and wherein the second thickness of the compressed crossing points is approximately equal to one half of the first thickness.5. The catheter of claim 1 , wherein the wire members initially have a ...

SHAFT FOR MEDICAL DEVICES AND CATHETER

The application relates to a shaft () for medical devices comprising an inner tube () and an outer tube (), wherein the inner tube () and the outer tube () extend concentrically with a common longitudinal axis from a proximal end () to a distal end () of the shaft (), and a spiral wall () projecting radially outwards from the inner tube (). Further, the application relates to a catheter having such a shaft (). 1. A shaft for medical devices comprising:an inner tube and an outer tube, wherein the inner tube and the outer tube extend concentrically with a common longitudinal axis from a proximal end to a distal end of the shaft, anda spiral wall projecting radially outwards from the inner tube, wherein the spiral wall is monolithically formed with the inner tube and in contact with the outer tube.2. The shaft according to claim 1 , wherein the inner tube claim 1 , the outer tube and the spiral wall are monolithically formed.3. The shaft according to claim 1 , wherein the spiral wall has a rounded cross-section.4. The shaft according to claim 3 , wherein the spiral wall has a circular cross-section.5. The shaft according to claim 1 , wherein the shaft is made of polymeric material.6. A catheter having a shaft according to .7. A shaft for medical devices comprising:an inner tube and an outer tube, wherein the inner tube and the outer tube extend concentrically with a common longitudinal axis from a proximal end to a distal end of the shaft, anda spiral wall projecting radially outwards from the inner tube, wherein the spiral wall is in contact with the outer tube, wherein the spiral wall has a rounded cross-section.8. The shaft according to claim 7 , wherein the inner tube claim 7 , the outer tube and the spiral wall are monolithically formed.9. The shaft according to claim 8 , wherein the spiral wall has a circular cross-section.10. The shaft according to claim 9 , wherein the shaft is made of polymeric material.11. A catheter comprising:an inner tube and an outer tube ...

Catheter Adapter Providing Catheter Kink Resistance

A vascular access device is disclosed including a catheter, a catheter adapter having a distal end and a proximal end, an overall length extending from the distal end to the proximal end, an internal cavity, an upper portion, a lower portion and a tip having a distal opening having a circumference through which the catheter extends, an introducer needle extending through the catheter; and a needle hub connected to the proximal end of the introducer needle. The catheter adapter being connected to the proximal end of the catheter and at least a majority of the catheter adapter is made from a first material and at least a portion of the tip is made from a second material that is more flexible than the first material. 1. A vascular access device comprising:a catheter having a proximal end and a distal end; an introducer needle extending through the catheter; and', 'a needle hub connected to the proximal end of the introducer needle, wherein at least a portion of the catheter adapter is made from a first material and at least a portion of the tip is made from a second material that is more flexible than the first material., 'a catheter adapter having a distal end, a proximal end, an overall length extending from the distal end to the proximal end, an internal cavity, an upper portion, a lower portion and a tip region having a distal opening having a circumference through which the catheter extends, the catheter adapter being connected to the proximal end of the catheter;'}2. The vascular access device of claim 1 , wherein the portion of the tip made from the second material includes the tip having the distal opening having the circumference through which the catheter extends claim 1 , and wherein a catheter exiting the distal opening is flexibly supported by the tip.3. The vascular access device of claim 2 , further comprising a wing element attached to the catheter adapter and extending radially outward from the catheter adapter claim 2 , wherein the wing element is ...

Catheter Adapter With Distal Inner Diameter Curvature Providing Kink Resistance

Catheter adapters and vascular access device including catheter adapters are discloses. The catheter adapter tip opening has an internal curvature defining a tapered region in the lower portion, but not the upper portion, to support a flexured portion of the catheter to prevent kinking and occlusion. 1. A vascular access device comprising:a catheter including a flexured portion; anda catheter adapter having a distal end, a proximal end, an overall length extending from the distal end to the proximal end, an internal cavity, an upper portion, a lower portion and a distal tip having a catheter adapter tip opening having a circumference and through which the catheter extends, wherein the overall length is substantially equivalent at the upper portion and the lower portion, and the catheter adapter tip opening having an internal curvature defining a tapered region in the lower portion, wherein the tapered region supports the flexured portion of the catheter to provide an angle of insertion for the catheter without restricting a flow through the catheter, the tapered region being less than the overall length.2. The vascular access device of claim 1 , wherein the internal curvature of the lower portion of the catheter adapter tip opening defines a chamfer.3. The vascular access device of claim 1 , wherein the internal curvature of the lower portion of the catheter adapter tip opening is rounded.4. The vascular access device of claim 1 , wherein the internal curvature of the lower portion of the catheter adapter tip opening is trumpet shaped.5. The vascular access device of claim 1 , wherein the lower portion of the catheter adapter tip opening defines a radius at the distal tip that incrementally decreases moving away from the distal tip.6. The vascular access device of claim 1 , wherein the vascular access device is selected from a group including a central venous catheter claim 1 , a peripherally inserted central catheter claim 1 , a peripheral intravenous cannula claim ...

EXTENSION TUBING STRAIN RELIEF

An integrated vascular access device can include strain relief features to minimize the likelihood of the extension tubing becoming kinked during use. These strain relief features can be configured at both ends of the extension tubing to minimize the likelihood of kinking at the interfaces to the catheter adapter and luer adapter. To provide strain relief at the catheter adapter end of the extension tubing, an interface formed of a flexible material can be aligned with an extension of the catheter adapter into which the extension tubing inserts. The interface can be integrated into a stabilization platform or formed separately from a stabilization platform. To provide strain relief at the luer adapter end of the extension tubing, a flexible spacer can be coupled to a distal end of the adapter and have a distal portion that is positioned around the extension tube. 1. A vascular access device comprising:a catheter adapter comprising a main body portion from which a catheter extends distally and an extension that extends outwardly from the main body portion;extension tubing having a distal end that inserts into and is secured within the extension; andan interface formed of a flexible material that is positioned in-line with the extension such that the extension tubing extends through the interface and into the extension.2. The vascular access device of claim 1 , further comprising:a stabilization platform having a first stabilization platform side that is coupled to the catheter adapter and extends outwardly from the main body portion.3. The vascular access device of claim 2 , wherein the interface is an integral part of the first stabilization platform side.4. The vascular access device of claim 2 , wherein the first stabilization platform side is molded around a portion of the extension.5. The vascular access device of claim 1 , wherein the interface:extends around a portion of the extension; oris molded to the extension.6. The vascular access device of claim 2 , ...

Thrombus extraction catheter

Embodiments of the invention include a multi-lumen catheter for extracting or aspirating a blood clot or thrombus from arterial or veinous sites. Other embodiments are also included herein.

Flexible catheter shaft frame with seam

The designs herein can be for a flexible and kink-resistant catheter with a support tube which can be radially expanded to enable it to be slid over an inner liner on a mandrel during assembly. The designs are flexible enough to allow the catheter to access remote vessel occlusions but also benefit from good compressive and tensile stiffness. The designs can have a laser cut frame with interlocking structure of circumferentially discontinuous rib struts. The discontinuities can be aligned to form at least one continuous axial seam which is separable to allow for the radial expansion during manufacturing. A series of polymeric outer jackets can coat or encapsulate the struts of the frame, giving variable stiffness and preventing disengagement of the interlocking structure while the catheter is pushed through tortuous anatomy.

GUIDEWIRE FOR CATHETER INSERTION

A guidewire configured to reduce the incidence of medical accidents when using guidewires including, but not limited to, the incidence of guidewires accidentally being pushed completely into a patient through a needle in the patient, guidewires accidently being left inside patients after the placement of central venous (and other) catheters, and guidewires accidently being left inside patients after removal of the catheter (at the end of an operation of other medical procedure). In particular, an intermediary portion (in the form of a new shape (referred to herein as “an obstruction portion”), an impeding portion, or an alternate (e.g., more flexible) material) of the guidewire inhibits further advancement into the needle with pushing motion. (The intermediary portion can be implemented as an additional portion connected between the patient-side portion and the doctor-side portion of the guidewire as well.) 1. A guidewire for insertion into at least one of a needle and a mini-catheter during a medical procedure comprising:a patient-side portion;a doctor-side portion; andan intermediary portion interposed between the patient-side portion and the doctor-side portion having, a diameter greater than the inner diameter of the at least one of the needle and the mini-catheter and greater than the first diameter of the patient-side portion_such that the intermediary portion does not advance into the at least one of the needle and the mini-catheter during the medical procedure when a medical professional pushes axially on the doctor-side portion.2. The guidewire as claimed in claim 1 , wherein the intermediary portion comprises an obstruction portion having a reducible diameter that reduces under force exerted by a medical professional after insertion of the patient-side portion of the guidewire into the at least one of the needle and the mini-catheter.3. The guidewire as claimed in claim 2 , wherein the obstruction portion has a temporarily reducible diameter.4. The ...

CATHETER ASSEMBLIES AND RELATED METHODS

An intravenous catheter device or apparatus includes a catheter hub, a catheter tube that resists kinking, a needle, and a needle hub. The catheter tube includes a catheter body having a lumen, an. outer circumference, and a wail thickness between the lumen and the outer circumference, or between an exterior surface and an interior surface. The catheter body can have at least two different portions made from two different materials having two different stiffness properties. The first portion can be made from a first material and the second portion can be made from a second material and wherein the stiffness of the second material can be greater than the stiffness of the first material. 116-. (canceled)17. A catheter assembly comprising:a catheter hub having a catheter tube attached thereto;a needle with a needle tip attached to a needle hub and the needle projecting through the catheter tube with the needle tip projecting distally of a distal opening of the catheter tube; a first portion of the wall thickness formed from a first material with a first stiffness property, the first portion having an inner surface forming at least part of the interior surface of the catheter body and of the lumen and an outer surface forming at least a part of the exterior surface of the catheter body;', 'a second portion of the wall thickness formed from a second material with a second stiffness property, the second portion having an inner surface and an outer surface;', 'wherein the second stiffness property of the second material is greater than the first stiffness property of the first material;', 'wherein the second portion is embedded within the wall thickness of the catheter tube or not embedded within the wall thickness of the catheter tube; and', 'wherein when the second portion is not embedded within the wall thickness of the catheter tube, (i) the inner surface of the second portion forms another part of the interior surface of the catheter body and of the lumen, (ii) the ...

Method and system for transitioning between states in flexible robot devices

A medical system involves a flexible catheter, an instrument carriage, an actuator, and a controller coupled to the actuator. The flexible catheter includes a flexible body having a proximal portion and a distal portion. The distal portion is articulable along an articulation degree of freedom of the flexible catheter. The instrument carriage supports the flexible catheter at the proximal portion of the flexible body. The actuator is disposed on the instrument carriage and configured to drive the distal portion of the flexible catheter along the articulation degree of freedom. The controller is configured to detect an exception of the medical system, based on detection of the exception, switch from an operating state to a control state, and control the actuator, in the control state, to relax the flexible catheter along the articulation degree of freedom.

Access port and catheter assembly including catheter distal portion stability features

A stabilized catheter tube for insertion into a body of a patient. The catheter tube includes a distal portion that remains stable during fluid infusion into the patient, thus reducing or eliminating whipping of the catheter distal tip. In one embodiment, the catheter tube defines at least one lumen and is formed from a tube material that defines a proximal portion and a distal portion of the catheter tube. The catheter tube is configured such that the arithmetic product of an elastic modulus and an area moment of inertia for the distal portion of the catheter tube is greater relative the arithmetic product of an elastic modulus and an area moment of inertia for the proximal portion of the tube. In one embodiment, the catheter tube is operably attached to an implantable access port and includes an enlarged distal portion relative a proximal portion of the catheter tube.

CATHETER CONTACT FORCE SENSOR

A spring assembly usable with an intravascular catheter can include a tubular body, two mounting surfaces, and a compressible framework. The tubular body extends along a longitudinal axis and is sized to traverse vasculature. Each mounting surface can be configured to engage a substantially planar electrical circuit and is positioned in the tubular body each in a respective plane perpendicular to the longitudinal axis. The mounting surfaces face toward each other in opposite directions. The compressible framework extends between the first and second mounting surfaces. The spring assembly can further include a pair of electrical circuits mounted to the pair mounting surfaces. Each electrical circuit can include an inductive coil such that the pair of electrical circuits is a distance transducer. A change in distance between the pair of electrical circuits can be detected when the compressible framework is compressed and/or bent. 1. A spring assembly comprising:a tubular body extending along a longitudinal axis, the tubular body sized to traverse vasculature;a first mounting surface configured to engage a substantially planar electrical circuit, the first mounting surface positioned in the tubular body, perpendicular to the longitudinal axis, and facing a first direction parallel to the longitudinal axis;a second mounting surface configured to engage a substantially planar electrical circuit, the second mounting surface positioned in the tubular body, perpendicular to the longitudinal axis, and facing toward the first mounting surface in a second direction opposite the first direction; anda compressible framework extending between the first mounting surface and the second mounting surface.2. The spring assembly of claim 1 , further comprising:a first opening in the tubular body, the first opening circumscribed by the first mounting surface and the compressible framework; anda second opening in the tubular body, the second opening circumscribed by the second mounting ...

CENTERING COILED GUIDE

A device and system for providing a centered lumen within a catheter body. A coiled guide lumen (CGL) is composed of a length of wire forming a plurality of coils about the longitudinal axis of the CGL, the CGL including one or more first sections having a first diameter and one or more sections having a second diameter, the second diameter being greater than the first diameter, and a secondary guide lumen extending through the first sections. The CGL may include at least one pull wire extending through the secondary guide lumen and attached at the distal portion of the catheter body. A band may be coupled to an interior of the catheter body distal portion, each of the pull wires being coupled to the annular band. Alternatively, the system may further include a shim coupled to the band, each of the pulls wire being coupled to the shim. 1. A coiled guide lumen defining a longitudinal axis , the coiled guide lumen comprising:at least one first coil having a first outer diameter and a first length along the longitudinal axis;at least one second coil distal to the at least one first coil and at least one third coil proximal to the at least one first coil, each of the at least one second coil and the at least one third coil having a second outer diameter, the second outer diameter being less than the first outer diameter, the at least one second coil and the at least on third coil each having a second length along the longitudinal axis;a plurality of fourth coils distal to the at least one second coil and a plurality of fifth coils proximal to the at least one third coil, each of the plurality of fourth coils and the plurality of fifth coils having a third outer diameter, the third outer diameter being less than the second outer diameter, the plurality of fourth coils and the plurality of fifth coils each having a third length along the longitudinal axis; anda secondary guide lumen that is passed through the plurality of forth coils and the plurality of fifth coils, such ...

Noncircular inner lumen guiding catheter with assisted variable support

A noncircular inner lumen guiding catheter with assisted variable support has an inner wall defining a noncircular cross-sectional shaped lumen for use in delivery of multiple microcatheters or other devices for treatment of neurovascular defects, such as for treatment of aneurysms. The noncircular inner lumen guiding catheter with assisted variable support includes torque transmittal guidance walls that are flexible linearly but not circumferentially, and that are neither collapsible nor kinkable. The noncircular shaped cross-section of the inner lumen may extend along the entire length of the catheter or a portion thereof, including distal or proximal.

SYSTEMS AND METHOD FOR MEDICAL DEVICE STRAIN RELIEF

Medical devices including vascular access systems comprising a strain relief component are disclosed. The vascular access system comprises an inflow conduit, connector, and strain relief component. The strain relief is configured to prevent kinking and an irregular internal surface of the inflow conduit to promote laminar flow of blood within the inflow conduit and prevent thrombosis of the inflow conduit. The strain relief is configured to be releasably coupled to the inflow conduit. 2. The vascular access system of claim 1 , wherein the strain relief component is releasably coupled to the inflow conduit.3. The vascular access system of claim 1 , wherein the strain relief component is configured to be claim 1 , at least in part claim 1 , peeled from the inflow conduit.4. The vascular access system of claim 1 , wherein the strain relief component resists kinking of the inflow conduit.5. The vascular access system of claim 1 , wherein the strain relief component is hemocompatible.6. The vascular access system of claim 1 , wherein the strain relief component is an elongate coil.7. The vascular access system of claim 1 , wherein the strain relief component has a circular shaped cross-section.8. The vascular access system of claim 1 , wherein a lumen of the inflow conduit has a smooth surface where the strain relief component is attached to the inflow conduit.9. The vascular access system of claim 8 , wherein blood maintains laminar flow through the inflow conduit lumen where the strain relief component is attached to the inflow conduit.10. The vascular access system of claim 1 , wherein the strain relief component comprises polypropylene.11. A method of forming a vascular access system resistant to kinking claim 1 , comprising:providing an inflow conduit;providing a connector;providing a strain relief component comprising a copolymer of hexafluoropropylene and tetrafluoroethylene; andcoupling the strain relief component to the inflow conduit.12. The method of claim 11 ...

Catheter

This invention identifies cavitation as a damaging problem in catheterizing, such cavitation occurring upon removal of the catheter from the urethra. This invention shows venting the catheter tip to reduce cavitation related damage to the urinary track upon catheter removal. This invention discloses methods to reduce or prevent cavitation damage to portions of the urinary track This invention shows a vent to reduce partial vacuum formation leading to cavitation damage can be plastic “trimmer lines” used in lawn trimmers also called “weed eaters”.

FLEX TIP FLUID LUMEN ASSEMBLY WITH TERMINATION TUBE

A catheter tip is disclosed comprising a tip electrode comprising a ledge feature, and a center cavity and a manifold assembly comprising a fluid lumen manifold and a stop tube. The stop tube can be coupled to the fluid lumen manifold and configured to abut the ledge feature such that a distal end of the fluid lumen manifold extends a pre-determined distance into the center cavity of the tip electrode. The fluid lumen manifold can comprise a plurality of sideholes which can be sized and configured to distribute an irrigant to the tip electrode. The catheter tip can comprise a flexible tip electrode. 120.-. (canceled)21. A catheter tip assembly comprising:a tip electrode comprising, an electrode wall, a ledge feature and a center cavity, wherein the electrode wall defines the center cavity; anda manifold assembly comprising a fluid lumen manifold and a stop tube, wherein a distal end of the manifold assembly is disposed within the center cavity,wherein the stop tube is coupled to the fluid lumen manifold and abuts the ledge feature such that a distal end of the fluid lumen manifold extends a pre-determined distance into the center cavity of the tip electrode.22. The catheter tip assembly according to wherein the pre-determined distance is configured to allow an irrigation fluid into the center cavity of the tip electrode.23. The catheter tip assembly according to further comprising a stem including a proximal face claim 21 , wherein the stop tube is coupled to the fluid lumen manifold by an adhesive positioned between the stop tube and the proximal face.24. The catheter tip assembly according to wherein a distal portion of the fluid lumen manifold further comprises a plurality of sideholes.25. The catheter tip assembly according to wherein the plurality of sideholes are of varying sizes.26. The catheter tip assembly according to wherein a subset of the plurality of sideholes more distally located comprise a smaller diameter than a subset of the plurality of sideholes ...

CATHETER

A catheter including an outer tube; a first inner tube disposed within the outer tube; a second inner tube disposed within the outer tube and parallel to the first inner tube, and having an insertion opening at its proximal end and a distal end opening at its distal end; and a first core wire and a second core wire disposed between the first inner tube and an outer tube. The second inner tube extends from a medial region of the catheter to a distal end of the catheter. A distal end of the first core wire is located distal to the insertion opening of the second inner tube, and a distal end of the second core wire is located proximal to the insertion opening of the second inner tube. The second core wire can move between the outer tube and the first inner tube. 1. A catheter comprising:an outer tube;a first inner tube disposed within the outer tube;a second inner tube disposed within the outer tube and disposed parallel to the first inner tube, the second inner tube having an insertion opening provided at a proximal end of the second inner tube and a distal end opening provided at a distal end of the second inner tube;a first core wire disposed between the outer tube and the first inner tube, the first core wire being fixed to the outer tube or the first inner tube; anda second core wire disposed between the outer tube and the first inner tube and disposed parallel to the first core wire, the second core wire being configured to move between the outer tube and the first inner tube,wherein:the second inner tube extends from a medial region of the catheter to a distal end of the catheter, anda distal end of the first core wire is located distal to the insertion opening of the second inner tube, and a distal end of the second core wire is located proximal to the insertion opening of the second inner tube.2. The catheter according to claim 1 , wherein the first core wire is longer than the second core wire.3. The catheter according to claim 1 , wherein a cross-sectional ...

DEVICE FOR THE TREATMENT OF ESOPHAGEAL STENOSES

The device () for the treatment of esophageal stenoses, comprising at least a body () of elongated shape intended to be inserted within the esophagus of a patient, and a tubular sheath () mounted around said body () to define an interspace () between said body () and the tubular sheath (), wherein it comprises a stiffening element () accommodated in said interspace () and comprising a plurality of ribs () which extend along said interspace (). 1. A device for the treatment of esophageal stenoses , comprising:at least a body of elongated shape intended to be inserted within the esophagus of a patient;at least a tubular sheath mounted around said body to define an interspace between said body and said tubular sheath; andat least a stiffening element accommodated in said interspace and comprising a plurality of ribs which extend along said interspace.2. The device according to claim 1 , wherein said ribs are rectilinear and parallel to a longitudinal direction of said body.3. The device according to claim 1 , wherein said ribs are helical shaped and wound in a spiral around said body.4. The device according to claim 1 , wherein said stiffening element is made of an elastomeric material of predetermined hardness.5. The device according to claim 1 , wherein said stiffening element comprises a tubular section having an inner surface which can be fitted around said body and an outer surface on which said ribs are arranged.6. The device according to claim 1 , wherein said stiffening element comprises a tubular section having an outer surface which can be fitted within said tubular sheath and an inner surface on which said ribs are arranged.7. The device according to claim 1 , wherein said stiffening element and said tubular sheath are made in a single monolithic body comprising a tubular section having an outer surface adapted to define said tubular sheath and an inner surface on which said ribs are arranged.8. The device according to claim 1 , wherein said body has a ...

COLLAPSE-RESISTANT SWELLABLE CATHETER

An infusion system comprising a base, a pump, a fluid tubing set that connects the pump and the base, and a collapse-resistant catheter extending from the base and comprising a swellable inner element including one or more indents, and a non -swellable flexible outer sleeve covering an outer wall of the inner element, wherein when the swellable inner element absorbs liquid, the swellable inner element swells and the one or more indents control a direction of the swelling by causing the swellable inner element to fold inwardly. 1. An infusion system comprising:a base;a pump;a fluid tubing set that connects the pump and the base; and a swellable inner element including one or more indents; and', 'a non-swellable flexible outer sleeve covering an outer wall of the inner element;, 'a collapse-resistant catheter extending from the base and comprisingwherein when the swellable inner element absorbs liquid, the swellable inner element swells and the one or more indents control a direction of the swelling by causing the swellable inner element to fold inwardly.2. The infusion system as claimed in claim 1 , further comprising a hub connected to the fluid tubing set and detachably connected to the base.3. The infusion system as claimed in claim 1 , wherein outward swelling of the inner element is externally restrained by the flexible outer sleeve.4. The infusion system as claimed in claim 1 , wherein the swelling of the inner element is directed inward toward its centerline.5. The infusion system as claimed in claim 1 , wherein the inner element comprises an inner tube having one or more thick segments and one or more thin segments.6. The infusion system as claimed in claim 5 , wherein the one or more thick segments includes a concave surface.7. The infusion system as claimed in claim 5 , wherein the one or more thick segments and the one or more thin segments are alternately connected.8. The infusion system as claimed in claim 5 , wherein each of the one or more thin ...

Contact Force Spring with Mechanical Stops

A catheter apparatus, including an elongated deflectable element, a distal assembly, a force sensor disposed between the elongated deflectable element and the distal assembly, and comprising a spring including a tube with at least one helical cut extending around a circumference of the tube, the at least one helical cut including deviations extending in a longitudinal direction of the tube, the deviations being configured to prevent overstretching and overbending of the spring. 1. A catheter apparatus , comprising:an elongated deflectable element;a distal assembly;a force sensor disposed between the elongated deflectable element and the distal assembly, and comprising a spring including a tube with at least one helical cut extending around a circumference of the tube, the at least one helical cut including deviations extending in a longitudinal direction of the tube, the deviations being configured to prevent overstretching and overbending of the spring.2. The apparatus according to claim 1 , wherein respective ones of the deviations include respective opposing sigmoid curves.3. The apparatus according to claim 1 , wherein respective ones of the deviations of the helical cuts define respective mechanical stops claim 1 , each mechanical stop including opposing surfaces which are configured to come into contact with each other to prevent overstretching and overbending of the spring.4. The apparatus according to claim 3 , wherein respective ones of the mechanical stops are configured to engage simultaneously so that a force applied on the spring is shared among the respective mechanical stops to prevent sequential failure of the respective mechanical stops.5. The apparatus according to claim 4 , wherein the at least one helical cut comprises multiple helical cuts claim 4 , respective ones of the mechanical stops of each of the helical cuts being configured to engage simultaneously.6. The apparatus according to claim 4 , wherein the at least one helical cut comprises ...

PERMEABLE STRUCTURAL INTERFACE FOR THE CONSTRUCTION OF THIN-WALLED BALLOON CATHETERS

The present invention relates to the construction of thin-walled balloon catheters where navigability, low cross-sectional profile, and low inflation and deflation times are desired. Structural reinforcement of inflation lumen utilizes a soft, flexible, permeable material to fill the fluid channel to maintain patency of the lumen. 1. A catheter configured to maintain patency of a fluid lumen , comprising:a catheter body having at least one fluid lumen defined therethrough;a structural interface disposed within the at least one fluid lumen, wherein the structural interface is configured to be permeable to fluids and further has a structural integrity which is sufficient so as to inhibit contact between walls of the fluid lumen such that patency of the fluid lumen is maintained.2. The catheter of wherein the fluid lumen is defined within a wall of the catheter body.3. The catheter of wherein the catheter is comprised of a primary lumen and a secondary lumen coaxially aligned about the primary lumen and forming the fluid lumen therebetween.4. The catheter of wherein the structural interface is comprised of a braid positioned between the primary lumen and the secondary lumen.5. The catheter of wherein the structural interface is comprised of an array of micro-pillars extending between an outer wall of the primary lumen and an inner wall of the secondary lumen.6. The catheter of wherein the array of micro-pillars is attached to the outer wall of the primary lumen.7. The catheter of wherein the array of micro-pillars is attached to the inner wall of the secondary lumen.8. The catheter of wherein the array of micro-pillars has a first spacing density along a first portion of the catheter and a second spacing density along a second portion of the catheter.9. The catheter of wherein the array of micro-pillars has a non-uniform spacing density.10. The catheter of wherein the array of micro-pillars has a first set of micro-pillars having a first height and a second set of ...

DISTAL ACCESS ASPIRATION GUIDE CATHETER

Distal access aspiration guide catheter system and methods for delivering implantable devices, catheters, or substances in or near and/or restoring flow through body lumens, such as blood vessel lumens are described. A Distal access aspiration guide catheter having a proximal, medial, and distal possessing high flexibility, high resistance to kinking and a large lumen to wall thickness ratio. 112-. (canceled)13. A catheter comprising: an inner liner;', 'an outer cover;', 'a metal structure between the inner liner and the outer cover, the metal structure defining a helical gap; and', 'a polymeric material positioned within the helical gap and between the inner liner and the outer cover, wherein the polymeric material comprises a thermoset polymer material, and wherein the polymeric material is different from the materials of the inner liner and outer cover, and, 'a catheter body comprisingwherein a distal section of the catheter body has an inner diameter to wall thickness ratio greater than or equal to 16:1.14. The catheter of claim 13 , wherein the inner diameter to wall thickness ratio of the distal region of the catheter body is in a range of 16:1 to 24:1.15. The catheter of claim 13 , wherein the distal section of the catheter body has a lateral flexibility of greater than or equal to 1200 degrees of deflection per pound-force inch.16. The catheter of claim 13 , wherein the distal section of the catheter body comprises a first distal section and a second distal section distal to the first distal section claim 13 , wherein the first distal section has a first lateral flexibility of greater than or equal to 1000 degrees of deflection per pound-force inch and the second distal section has a second lateral flexibility of greater than or equal to 1500 degrees of deflection per pound-force inch.17. The catheter of claim 13 , wherein the distal section of the catheter body comprises a first distal section and a second distal section distal to the first distal section ...

MEDICAL ELONGATED BODY

A medical elongated body is disclosed that suppresses elongation in an axial direction while maintaining high flexibility and has high torque transmission capability even in a bent state. The medical elongated body includes a tube shaped body. The tube shaped body has a slit extending in a spiral shape while meandering, the slit is formed from a pair of a first opposing surface and a second opposing surface, the first opposing surface forms a first convex portion, the first convex portion has a first wide portion having a width wider in a circumferential direction Y, the second opposing surface forms a first concave portion which surrounds and accommodates the first wide portion, the first convex portion has a first plane portion and a first side portion connected to both end portions, and in a circumferential developed view, the first side portion and the first plane portion have tangential discontinuity. 1. A medical elongated body comprising:a tube shaped body, the tube shaped body having a slit extending in a spiral shape while meandering, the slit being formed from a first opposing surface and a second opposing surface;the first opposing surface forming a first convex portion, the first convex portion having a wide portion having a width widening in a circumferential direction of the tube shaped body;the second opposing surface forming a concave portion that surrounds and accommodates the wide portion of the first convex portion, the first convex portion having a plane portion and two side portions, the two side portion being connected to both end portions of the plane portion of the first convex portion in the circumferential direction; andwherein the two side portions and the plane portion have tangential discontinuity.2. The medical elongated body according to claim 1 , wherein at least one of the two side portions has a curved surface.3. The medical elongated body according to claim 2 , wherein the curved surface of the at least one of the two side portions ...

CABLE ARRANGER

Catheterization employing a cable extending from the catheter to a fixed point of attachment is performed by providing a sensor to detect rotation of the catheter about its longitudinal axis, the rotation causing the cable to form a twist. The cable extends through a cable arranger that operates to remove the twist. A controller receives signals from the sensor and generates control signals to actuate the cable arranger responsively to the signals from the sensor. 1. An apparatus , comprising:a catheter adapted for insertion into a living subject, the catheter having a longitudinal axis;a cable having one end attached to the catheter and another end a fixed point of attachment;a sensor for detecting rotation of the catheter about the longitudinal axis, the rotation causing a segment of the cable to form a twist in a portion of the cable;a cable arranger for removing the twist from the portion of the cable; anda controller receiving signals from the sensor and operative for generating control signals to actuate the cable arranger responsively to the signals of the sensor.2. The apparatus according to claim 1 , wherein the sensor is a magnetic field sensor.3. The apparatus according to claim 1 , wherein the sensor is an accelerometer adapted to measure tangential acceleration of the catheter about the longitudinal axis.4. The apparatus according to claim 1 , wherein the sensor is a rotary torque transducer.5. The apparatus according to claim 1 , wherein the cable arranger comprises:a shaft holding a segment of the cable; anda drive motor for rotating the shaft.6. The apparatus according to claim 5 , wherein the shaft has a lumen claim 5 , the cable passing through the lumen and being in contact with the shaft for rotation therewith.7. The apparatus according to claim 6 , further comprising a gear train linked to the drive motor and the shaft.8. The apparatus according to claim 7 , wherein the gear train comprises a drive gear attached to the drive motor claim 7 , two ...

CATHETER WITH BRAID AND RADIOPAQUE SECTION

In an example, a catheter assembly includes a catheter body extending from a catheter proximal portion to a catheter distal portion having a distal tip. a coil proximate to the catheter distal portion, the coil having a first section and a second section, wherein the first section has a first imaging characteristic. The second section is swaged, and the second section of the coil has a second imaging characteristic. The second imaging characteristic differs from the first imaging characteristic, and the different first and second imaging characteristics are configured to contrast and emphasize visibility of the distal tip relative to the remainder of the catheter body. In another example, a second braided layer of the catheter body is configured to constrain and brace a first braided layer. 1. A catheter assembly , comprising:a catheter body extending from a catheter proximal portion to a catheter distal portion having a distal tip; the first section of the coil extends toward the distal tip, and the first section has a first imaging characteristic;', 'the second section is swaged and extends from the first section to the distal tip, and the second section of the coil has a second imaging characteristic; and', 'the second imaging characteristic differs from the first imaging characteristic, and the different first and second imaging characteristics are configured to contrast and emphasize visibility of the distal tip relative to the remainder of the catheter body., 'a coil proximate to the catheter distal portion, the coil having a first section and a second section, wherein2. The catheter assembly of claim 1 , wherein the second section of the coil includes a planar filar profile claim 1 , and the planar filar profile includes a plurality of planar perimeter surfaces of swaged filars included in the swaged second section of the coil.3. The catheter assembly of comprising a tip coating applied along a planar filar profile at the distal tip claim 1 , and the planar ...

VARIABLE STIFFNESS SHAFT

Medical devices may include structure or provision that permit a physician or other health care professional to adjust particular parameters such as flexibility, stiffness and compressive strength of at least a portion of the medical device. In some instances, the medical device may be adjusted prior to inserting the medical device into a patient. In some cases, the medical device may be adjusted while in use within the patient. 1a hypotube comprising a plurality of slots disposed therein; andstrength altering means for changing compressive strength of the hypotube.. A medical device comprising: This application is a continuation of U.S. application Ser. No. 11/280,120, filed Nov. 16, 2005.The invention relates generally to medical devices having or including elongate shafts and relates more particularly to medical devices having elongate shafts that provide adjustability in flexibility, stiffness or compressive strength.Medical devices may be subject to a number of often conflicting performance requirements such as flexibility and strength. In some instances, improved flexibility may come at the expense of reduced strength. Increased strength may come at the expense of reduced flexibility. Because each patient is unique, there may be a unique balance of performance parameters such as flexibility and strength optimal for a particular patient. Moreover, the optimal balance of flexibility and strength for a particular patient may vary during a procedure, depending on vasculature encountered.Therefore, a need remains for medical devices that can be adjusted in performance parameters such as flexibility, stiffness and compressive strength, particularly in situ.The invention pertains generally to medical devices that include structure or provision that permit a physician or other health care professional to adjust particular parameters such as flexibility, stiffness and compressive strength of at least a portion of the medical device. In some instances, the medical ...

Over-the-Needle Catheter Insert

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having a structural member configured therein. The OTN catheter assembly includes a catheter coaxially mounted onto a needle. In one embodiment, the structural member includes a coil insert that is embedded into an interior wall of the catheter, thereby preventing kinking of the catheter when being inserted within a patient. In another embodiment, the structural member may be a separate and removable coil insert that is inserted into the catheter after the OTN catheter assembly has been placed in a targeted site within the patient and the needle is removed. In a further embodiment, the structural member may be a separate and removable solid insert having a blunt distal end that is inserted into the catheter after the OTN catheter assembly has been placed in a targeted site within the patient and the needle is removed. Thus, the structural member is capable of advancing the catheter to one or more targeted sites within the patient, if desired, without causing further discomfort to the patient. 1. A method for using an over-the-needle catheter assembly to provide treatment to a targeted site within a patient , the method comprising:providing a catheter having a proximal end and distal end, the catheter coaxially mounted onto a needle;inserting simultaneously the catheter and the needle into the patient until the distal end of the catheter reaches the targeted site;removing the needle from the catheter while the catheter remains within the patient adjacent to the targeted site;after removing the needle, inserting a coil insert into the catheter while the distal end of the catheter remains within the patient, wherein the coil insert prevents the catheter from kinking within the patient; andadministering a treatment fluid to the targeted site via the catheter, wherein the treatment fluid travels through a hollow passageway of the coil insert.2. The method of claim 1 , wherein the catheter ...

Catheter Tubing With Tailored Modulus Response

Catheter tubing comprises: an elongate body comprising a base thermoplastic polyurethane; and a compounded thermoplastic polyurethane co-extruded with the base thermoplastic polyurethane to provide a section of catheter tubing discrete from the elongate body, the compounded thermoplastic polyurethane comprising a thermoplastic polyurethane and a radiopaque material, wherein the catheter tubing comprises a first elastic modulus under first conditions prior to entry into a patient; and wherein when exposed to second conditions comprising two or more in vivo stimuli for a duration of time the catheter tubing comprises a second elastic modulus that is not more than fifty percent of the first modulus. 1. A method of making a medical device including a catheter tubing comprising: designing an elongate body having a section of catheter tubing discrete from the elongate body to form the catheter tubing such that the catheter tubing comprises a first elastic modulus under first conditions prior to entry into a patient; and wherein when exposed to second conditions comprising two or more in vivo stimuli for a time , the catheter tubing comprises a second elastic modulus that is not more than fifty percent of the first elastic modulus.2. The method of wherein the designing of the elongate body having the section of catheter tubing discrete from the elongate body comprises:providing a base polyurethane;providing a compounded polyurethane comprising a thermoplastic polyurethane and a radiopaque material; andco-extruding the base polyurethane and the compounded polyurethane to form the elongate body of the base polyurethane and the section discrete from the elongate body of the compounded thermoplastic polyurethane.3. The method of further comprising combining the catheter tubing with one or more components to form the medical device.4. The method of claim 3 , wherein the one or more components includes a needle and the medical device is a vascular access device.5. The method of ...

MEDICAL DEVICE WITH A REMOVABLE LINER

Medical devices, medical device systems, and methods for making and using the same are disclosed. An example medical device system may include a catheter shaft having a proximal end. A removable liner may extend through the catheter shaft. The removable liner may be designed to deliver a medical substance to a target region. The removable liner may be designed to be removed from the catheter shaft if the removable liner becomes plugged. The system may also include a replacement liner. The replacement liner may be designed to be inserted within the catheter shaft after the removal of the removable liner. A support member may be disposed along the replacement liner. 1. A medical device system , comprising:a catheter shaft having a proximal end;a removable liner extending through the catheter shaft;wherein the removable liner is designed to deliver a medical substance to a target region;wherein the removable liner is designed to be removed from the catheter shaft if the removable liner becomes plugged;a replacement liner;wherein the replacement liner is designed to be inserted within the catheter shaft after the removal of the removable liner; anda support member disposed along the replacement liner.2. The system of claim 1 , wherein the catheter shaft includes a first hub and wherein the removable liner includes a second hub designed to engage the first hub.3. The system of claim 2 , wherein the first hub claim 2 , the second hub claim 2 , or both include a threaded connector.4. The system of claim 1 , wherein the catheter shaft includes a reinforcing member.5. The system of claim 1 , wherein the removable liner includes a reinforcing member.6. The system of claim 1 , wherein the replacement liner defines a lumen and wherein the support member includes a delivery stylet disposed within the lumen.7. The system of claim 1 , wherein the support member includes a breakaway sheath disposed along an outer surface of the replacement liner.8. The system of claim 1 , wherein ...

Catheter shaft with multiple wire reinforcement and associated devices, systems, and methods

Disclosed is an intraluminal catheter that includes a flexible elongate shaft configured to be positioned within a body lumen of a patient, and an intraluminal sensor disposed at the distal portion of the shaft that is configured to sense a characteristic within the body lumen. The shaft further comprises a plurality of wires disposed around a lumen, wherein the wires are helically twisted. The wires can be helically twisted in a single direction to form a cylindrical shape. This helical structure is configured to stiffen the flexible elongate shaft for movement into an obstruction within the body lumen without kinking.

OCCLUSION DEVICE

A catheter includes a detachable tip assembly that when detached from the catheter may be used to occlude a body lumen or vessel. The detachable distal tip assembly may include an inflatable balloon disposed over and secured to a tubular member. The inflatable balloon may be in fluid communication within an inflation lumen extending within the catheter body. Upon reaching a target site within a body lumen or vessel, the detachable distal tip assembly may be released from the distal end of the catheter upon inflation of the balloon to a predetermined size. 1. A medical device , comprising:a main catheter body extending from a proximal end to a distal end;a distal tip assembly releasably coupled to the distal end of the main catheter body, the distal tip assembly including a tubular member defining a lumen extending from a proximal end to a distal end, and an inflatable balloon disposed over and secured to the tubular member;an inflation lumen in fluid communication with the inflatable balloon; anda release mechanism at the distal end of the main catheter body, the release mechanism comprising a tubular segment engaging an outer surface of the inflatable balloon when the distal tip assembly is coupled to the distal end of the main catheter body prior to deployment, wherein the tubular segment is configured such that expansion of the inflatable balloon expands at least a distal portion of the tubular segment outward and away from the main catheter body until the distal tip assembly including the inflatable balloon is released from the main catheter body.2. The medical device of claim 1 , wherein the main catheter body comprises an outer member disposed over an inner tubular member.3. The medical device of claim 2 , wherein the outer member comprises a nitinol tube having a plurality of apertures defined therealong.4. The medical device of claim 2 , wherein the inner tubular member defines the inflation lumen.5. The medical device of claim 1 , wherein the lumen of the ...

Catheter

A catheter is disclosed having a distal end portion of a shaft with high breaking strength even if a wall thickness of the distal end portion of the shaft is relatively small. The catheter includes an elongated tube shaped shaft. The shaft has an inner layer having a lumen along a longitudinal direction, an outer layer covering an outer peripheral side of the inner layer, and a reinforcement body disposed on the outer peripheral side of the inner layer. The outer layer has a distal outer layer on a distal end portion of the shaft, an intermediate outer layer proximal to the distal outer layer, and a proximal outer layer proximal to the intermediate outer layer. The intermediate outer layer is more flexible and thicker than the proximal outer layer, and a distal end of the reinforcement body is located proximal to a distal end of the intermediate outer layer. 1. A catheter comprising:an elongated tube shaped shaft, the elongated tube shaped shaft having an inner layer having a lumen along a longitudinal direction, an outer layer covering an outer peripheral side of the inner layer, and a reinforcement body disposed on the outer peripheral side of the inner layer;the outer layer having a distal outer layer on a distal end portion of the shaft, an intermediate outer layer proximal to the distal outer layer, and a proximal outer layer proximal to the intermediate outer layer; andwherein the intermediate outer layer is more flexible and thicker than the proximal outer layer, and a distal end of the reinforcement body is located proximal to a distal end of the intermediate outer layer.2. The catheter according to claim 1 , wherein the reinforcement body comprises metallic wires woven into a mesh shape.3. The catheter according to claim 2 , wherein distal end portions of the wires located at the distal end of the reinforcement body have a curved shape having no corner portion.4. The catheter according to claim 2 , wherein claim 2 , in the distal end portion of the ...

System and method for controlled delivery of medical devices into patient bodies

Intravascular delivery system for deployment of a therapeutic device (such as a stent, and/or other therapeutic devices including balloon catheter(s), laser catheter(s), intravascular ultrasound (IVUS), Optical coherence tomography (OCT), drug delivery catheter(s), coil delivery catheter(s), etc.) as required by a particular surgical procedure, in a controlled and robust manner is supported by a lockable balloon catheter equipped with a locking mechanism configured to lock in vivo to a delivery component, such as a guidewire. The lockable balloon catheter can be controllably transitioned between locked and unlocked modes of operation by inflation/deflation of the balloon of the lockable balloon catheter. The system provides an enhanced interlocking interface between the delivery component and an inner shaft by a unique configuration of the inner shaft. Connection of the inner shaft/guidewire and/or outer shaft/inflation lumen to the balloon is by an extended “neck” at the end(s) of the balloon which snuggly envelopes the portions of the inner and/or outer shaft(s) entering/exiting the balloon, thus avoiding the bonding and simplifying fabrication process. Being in the locked mode of operation, the lockable balloon catheter facilitates delivery of the therapeutic device along the delivery component to a target site while enhancing the stability of the delivery component, especially near the target site.

Catheter Shaft and Method of Its Manufacture

A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes. 1. (canceled)2. A method of manufacturing a catheter shaft , comprising:forming a wire reinforcing layer;forming a layer of a first material about the wire reinforcing layer and extending along an entire length of the wire reinforcing layer;forming an outer layer of a second material about the layer of the first material and extending continuously along a length of the layer of the first material, wherein the first material is hyperelastic relative to the second material; andbonding the second material to the first material such that the wire reinforcing layer becomes fully embedded in the second material.3. The method according to claim 2 , wherein at least one of the first material and the second material comprises a melt-processable polymer.4. The method according to claim 3 , wherein both the first material and the second material comprise melt-processable polymers.5. The method according to claim 2 , wherein at least one of the first material and the second material comprises a particulate radiopaque filler material.6. The method ...

Deflectable catheter shaft section, catheter incorporating same, and method of manufacturing same

A deflectable catheter shaft section is disclosed comprising an elongated body extending along a longitudinal axis and comprising a distal end and a proximal end; and a plurality of lumens extending along the longitudinal axis of the elongated body, wherein at least one of the lumens is abutting at least another one of the lumens. A catheter comprising the deflectable catheter shaft section and a method of manufacturing the deflectable catheter shaft section are also disclosed. A catheter incorporating a deflectable catheter shaft section can further comprise first and second compression coils disposed over pull wires located within the catheter, wherein the compression coils are unattached to the catheter or components thereof, but can be constrained by a shaft coupler at a distal end of each of the compression coils and by at least a portion of a handle assembly at a proximal end of each of the compression coils.

EMBOLIZATION MICROCATHETER HEAD HAVING SLITTED PATTERN

An embolization microcatheter having an elongated microcatheter body configured for passing therein a suspension of particles suspended in a suspension fluid; and a microcatheter head connected to a distal end of said microcatheter body and comprising a proximal head section and a distal head section, wherein the proximal head section includes a proximal wall forming a proximal section lumen, the proximal wall having a plurality of through-holes, wherein the distal head section includes a distal wall forming a distal section lumen, and a suspension delivery opening at a distal end of the distal end section; wherein the distal section is devoid of through-holes, and wherein each of the plurality of through-holes are shaped and/or sized to allow passage therethrough of the suspension fluid while blocking passage of the particles suspended therein. 1. An embolization microcatheter , comprising:an elongated microcatheter body connectable at a proximal end thereof to a suspension reservoir and configured for passing therein a suspension of particles suspended in a suspension fluid; anda microcatheter head connected to a distal end of said microcatheter body and comprising a proximal head section and a distal head section,wherein said proximal head section comprises a proximal wall forming a proximal section lumen, said proximal wall comprising a plurality of through-holes,wherein said distal head section comprises a distal wall forming a distal section lumen, and a suspension delivery opening at a distal end of said distal end section;wherein said distal section is devoid of said through-holes;wherein each of the plurality of through-holes are shaped and/or sized to allow passage therethrough of the suspension fluid while blocking passage of said particles; andwherein a spacing of said through-holes is set to enable a bending radius of at least 0.5 mm while avoiding kinking of said microcatheter.2. The embolization microcatheter of claim 1 , wherein each said plurality ...

Access Port And Catheter Assembly Including Catheter Distal Portion Stability Features

A catheter for insertion into a body of a patient, and methods of making and using. The catheter can include a distal portion that remains stable during fluid infusion into the patient, thus reducing or eliminating whipping of the catheter distal tip. The catheter includes at least one lumen and can be configured such that the arithmetic product of an elastic modulus and an area moment of inertia for the distal portion of the catheter is greater than the arithmetic product of an elastic modulus and an area moment of inertia for a proximal portion. The catheter can be attached to an implantable access port that may include features for use as a power injectable access port. 1. A method of manufacturing an implantable vascular access port system , the method comprising:producing an implantable vascular access port; and at least one lumen extending from a proximal end to a distal end;', 'a proximal portion including a first cross sectional lumen area;', 'a distal portion including a second cross sectional lumen area larger than the first cross sectional lumen area, the distal portion designed to prevent whipping when the catheter is disposed in a patient and a fluid exits the at least one lumen; and', 'a taper region interposed between the proximal portion and the distal portion, the taper region having a cross sectional lumen area transitioning from the first cross sectional lumen area to the second cross sectional lumen area., 'forming a catheter designed for coupling to the implantable vascular access port, the catheter comprising2. The method of manufacturing according to claim 1 , wherein the forming step comprises extruding the catheter from a thermoplastic polyurethane material.3. The method of manufacturing according to claim 1 , wherein the forming step comprises forming the distal portion of the catheter to have an area moment of inertia greater than an area moment of inertia of the proximal portion of the catheter.4. The method of manufacturing according to ...

TISSUE INTEGRATED DRUG DELIVERY SYSTEM

Infusion sets for subcutaneous drug delivery are described herein. The infusion set integrates a bijel-templated material (BTM) into a cannula such that a portion of the BTM protrudes from the cannula tip into the host tissue. The BTM is a porous, polymeric sponge having a co-continuous architecture with consistent curvature throughout non-constricting, interpenetrating channels, which is critical in mitigation of the deleterious host tissue response, vascularization, and flow redistribution in the implant. 130.-. (canceled)31. An infusion device comprising:a. a cannula having a lumen and an opening disposed on one end of the cannula, wherein the opening is fluidly connected to said lumen; andb. a bijel-templated material having a first portion disposed within the lumen and a remaining portion protruding from the opening of the cannula.32. The infusion device of claim 31 , wherein the bijel-templated material comprises continuous claim 31 , interconnected channels with multiple perfusion outlets.33. The infusion device of claim 31 , wherein the first portion of the bijel-templated material disposed within the lumen is bonded claim 31 , at least in part claim 31 , to an internal surface of the cannula.34. The infusion device of claim 33 , wherein the first portion of the bijel-templated material is bonded to the internal surface of the cannula that either has native functional groups or is activated by chemical means to form covalent bonds with complementary chemistries of the BTM.35. The infusion device of claim 33 , wherein the first portion of the bijel-templated material is bonded to the internal surface of the cannula by mechanically affixing the first portion of the bijel-templated material claim 33 , at least in part claim 33 , to an internal surface of the cannula.36. The infusion device of claim 31 , wherein the first portion of the bijel-templated material within the lumen prevents kinking of the cannula.37. The infusion device of claim 31 , wherein the ...

Expandable introducer sheath

An expandable introducer sheath provided with a steering mechanism is disclosed. The introducer sheath is configured for providing a prosthesis delivery system percutaneous access to a patient's vasculature. The introducer sheath includes a sheath component defining a central lumen and having a longitudinally-extending, radially-expandable portion. The sheath component also includes a steering wire slidably disposed within a wall thereof that longitudinally extends along the radially-expandable portion. When the steering wire is in a slackened configuration, the steering wire permits a width of the radially-expandable portion to increase. When the steering wire is in a taut configuration, the steering wire permits a distal portion of the sheath component to be manipulated or bent in order to align a distal port of the introducer sheath, for instance, with an ostium of a branch vessel.

CATHETER

A catheter that can efficiently transmit a pressing force applied to the distal end of the catheter without breaking at a midpoint of the catheter. The catheter includes a metal tube having a first wall and a second wall disposed in an outer tube, and a reinforcing member that is joined at its proximal end to an outer peripheral surface of the first wall. A distal end of the first wall extends distally beyond a distal end of the second wall and is bent toward the second wall. Thus, the second wall is not provided at a connected portion between the first wall and the proximal end of the reinforcing member, and the reinforcing member having a diameter increased at least by an amount corresponding to a thickness of the second wall can be disposed in the catheter without increasing the diameter of the outer tube. 1. A catheter comprising:an outer tube;a metal tube inserted into the outer tube;an first inner tube inserted into the metal tube; and wherein:', 'the metal tube has a first wall and a second wall opposed to the first wall, and a distal end of the first wall extends distally beyond a distal end of the second wall and is bent toward the second wall, and', 'the reinforcing member has a proximal end that is joined to an outer peripheral surface of the bent first wall., 'a reinforcing member inserted between the outer tube and the first inner tube and extending in a longitudinal direction,'}2. The catheter according to claim 1 , wherein the reinforcing member is metallic.3. The catheter according to claim 1 , further comprising:a second inner tube extending within the outer tube from a point between distal and proximal ends of the catheter to the distal end of the catheter.4. The catheter according to claim 1 , wherein a diameter of the proximal end of the reinforcing member is equal to a sum of (i) a distance between an outer peripheral surface of the first wall and an inner peripheral surface of the outer tube claim 1 , (ii) a thickness of the second wall claim 1 ...

Catheter

A catheter that prevents excessive concentration of stress while providing sufficient flexibility to a distal end portion of the catheter, even when the catheter is inserted and curved in patient's a blood vessel. Thus, breakage of the catheter at a radiopaque marker is prevented/reduced. The catheter includes a catheter tube and the radiopaque marker, which is disposed in the catheter tube. The radiopaque marker is fixed in the catheter so that a gap is provided between the radiopaque marker and the catheter tube in a radial direction of the catheter tube.

Magnetic anti-crush feature for conduit

A conduit ( 14 A) for conducting a flow of breathing gas from a pressure generating device ( 4 ) to a cushion ( 10 ) of a patient interface device ( 8 ) includes a housing ( 22 ) that defines a passage ( 24 ) therethrough. The conduit further includes a first magnetic element ( 30 A) disposed on a first side of the passage and a second magnetic element ( 32 A) disposed on a second side of the passage opposite the first side. The first and second magnetic elements are positioned such that the magnetic fields produced by each magnetic element interact in a manner such that the first magnetic element and the second magnetic element are repelled away from each other in a manner which resists collapse of the passage.

Breathing circuit components for respiratory apparatus

In one embodiment, a breathing circuit component is provided and comprises: an inlet; an outlet; and an enclosing wall defining a gases passageway between the inlet and the outlet, at least a region of the wall comprising a membrane that allows the passage of water vapour without substantially allowing the passage of liquid water or respiratory gases, wherein, said membrane has a thickness of about 35 to 45 micrometers.

TUBE FOR BEING INTRODUCED INTO AN OBJECT

The application relates to a tube for being introduced into an object. The tube (), which is preferentially a catheter, comprises a tube-like braid () made from electrically conductive strands (), wherein ends () of the strands () are staggered in the longitudinal direction of the tube (). Since the ends of the strands are staggered in the longitudinal direction of the tube, local radio frequency heat generated during a magnetic resonance imaging procedure is not concentrated at a single longitudinal location, but distributed along a staggered region in the longitudinal direction of the tube, in which the ends of the electrically conductive strands are staggered. This distribution of the radio frequency heat along the longitudinal direction of the tube reduces the maximum temperature produced by radio frequency heating and, thus, the likelihood of damaging the object, in which the tube is to be introduced, due to heat. 1. A tube for being introduced into an object , the tube comprising a tube-like braid made from electrically conductive strands , wherein ends of the strands are staggered in the longitudinal direction of the tube.2. The tube as defined in claim 1 , wherein the ends of the strands are staggered in a stagger region claim 1 , wherein the stagger region has a length within a range of 2 cm to 10 cm.3. The tube as defined in claim 1 , wherein end sections of at least some strands traverse the tube towards the center of the tube.4. The tube as defined in claim 3 , wherein the ends of at least some strands are arranged at or adjacent to the center of the tube.5. The tube as defined in claim 1 , wherein the braid is arranged within a tube material enclosing an inner lumen of the tube.6. The tube as defined in claim 5 , wherein the ends of at least some of the strands are arranged adjacent to the inner lumen.7. The tube as defined in claim 5 , wherein the ends of at least some of the strands are inserted into the lumen.8. The tube as defined in claim 1 , ...

Catheter Shaft and Method of Its Manufacture

A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes. 1. (canceled)2. A method of manufacturing a catheter shaft , comprising:forming a plait matrix layer, the plait matrix layer including a braided wire mesh embedded in a first material; andforming an outer layer of a second material about the plait matrix layer and extending continuously along a length of the plait matrix layer,wherein the first material has a lower flexural modulus and a higher yield strain than the second material.3. The method according to claim 2 , wherein the first material comprises a melt-processable polymer.4. The method according to claim 2 , wherein the second material comprises a melt-processable polymer.5. The method according to claim 2 , wherein at least one of the first material and the second material comprises a particulate radiopaque filler material.6. The method according to claim 2 , wherein the step of forming a plait matrix layer comprises:braiding the wire mesh to form a reinforced layer; andextruding the first material about the reinforced layer to form the plait matrix layer.7. The method according to ...