Catheter and method for manufacturing catheter

CATHETER AND BALLOON CATHETER

Smart occluder assembly

catheter and artificial respirator having the Same

catheter and artificial respirator having the Same

Urological Catheter

SUPPORT CATHETER

Devices and methods for low shearing local delivery of therapeutic agents to the wall of a bodily lumen

The invention relates generally to devices and methods for local delivery of therapeutic agents to the wall of a bodily lumen with minimal shearing damage to the therapeutic agents, more specifically to the wall of a blood vessel following atherectomy. A preferred delivery mechanism comprises a balloon, or double balloon, though any distal catheter design may be used to reduce shear stress and to conserve and/or isolate the therapeutic substance.

System and method for manipulating insertion pathways for accessing target sites

A method for accessing a target site in the body by transferring a guidewire from an initial insertion site on the body to a different insertion site on the body is provided. In one aspect, a method for transferring a medical device or component, such as a sensor lead, from an initial insertion site to another insertion site is also provided. A guidewire of sufficient length, pliancy and deformability to perform a transfer from one insertion site to another insertion site is provided. In one aspect, the guidewire comprises a removable core mandrel to increase rigidity, facilitate insertion and/or improve steerability. A kit or system, comprising introducers, guidewires and catheters for performing a guidewire or device transfer is also provided.

Access device with blunting device

A device may include a hollow needle, a dilator mounted coaxially on the needle, and a sheath mounted coaxially on the dilator. The dilator may be slideably displaceable relative to the sheath.

Catheter for an embryo transfer and a carrier for a cell transport

A catheter for introduction, particularly of the embryos, comprising an aspirator combined with an inner part of the catheter, characterized in that the core of the catheter is placed ( 1 ) inside the inner part of the catheter ( 4 ) and the aspirator ( 2 ), and the carrier for a cell transport, in particular of the embryos is covered with the adhesive agent.

Therapeutic agent delivery system and method for localized application of therapeutic substances to a biological lumen

The invention provides a system and method for localized application of therapeutic substances within a biological lumen and to the wall of the lumen. In various embodiments, a biodegradable tubular prosthesis comprising a plurality of pores is deployed within a biological lumen. Subsequent to, or in conjunction with, the deployment of the prosthesis, a drug-eluting balloon comprising at least one therapeutic agent is expanded within the lumen of the tubular prosthesis, thereby releasing the agent(s) from the balloon and delivering them to the prosthesis pores. The at least one therapeutic agent is then allowed to diffuse through the pores to the lumen wall.

Neurological apparatus

A guide element for insertion into the brain to guide implantable instruments, wherein the guide element comprises an elongate part, the elongate part having a composition of at least 80% tungsten carbide. The guide element may have a coating, such as a biocompatible plastics material which is more resilient than the elongate part.

Implantable medical device fixation testing

In one example, this disclosure includes a kit for implanting an implantable medical device within a patient. The kit comprises a delivery catheter including an inner member and an outer member. The kit further comprises the implantable medical device. The implantable medical device is adjacent the inner member and constrained by the outer member. The kit further comprises a force sensor in mechanical communication with the implantable medical device via the inner member. The force sensor collects force feedback data representing force applied by the inner member on the implantable medical device. The kit further comprises a user communication module configured to deliver force feedback information corresponding to the force feedback data collected by the force sensor to a user.

Venous nitinol embolization inserts

A venous nitinol embolization insert for restricting blood flow includes a tubular member and an embolization material attached to the tubular member. The embolization insert provides a predetermined blood flow rate based on experimental data. A method of controlling restriction of blood flow to a targeted vascular site within a patient's body includes selecting an insert that provides a predetermined blood flow rate corresponding to a desired blood flow rate. The embolization insert is selected from a plurality of embolization inserts that provide varied blood flow rates.

Apparatus and methods to create and maintain an intra-atrial pressure relief opening

The present disclosure relates to a method and a device for treating heart failure by normalizing elevated blood pressure in the left and right atria of a heart of a mammal The present disclosure includes methods for creating and maintaining an opening in the atrial septum. Tools for making an opening and enlarging the opening are also disclosed. Use of the techniques and tools described herein prolongs the patency of an intra-atrial pressure relief opening.

Catheter shaft with improved manifold bond

A catheter shaft with an improved manifold bond and methods for making and using the same. The catheter shaft may include a sleeve disposed, for example, near its proximal end. The sleeve may include a first layer that is attached to the catheter shaft and a second layer to which a hub or manifold may be attached.

Methods and systems for treatment of acute ischemic stroke

Described are methods and systems for transcervical access of the cerebral arterial vasculature and treatment of cerebral occlusions, including ischemic stroke. The methods and devices may include methods and devices which may provide aspiration and passive flow reversal, those which protect the cerebral penumbra during the procedure to minimize injury to brain, as well as distal catheters and devices to remove an occlusion. The methods and devices that provide passive flow reversal may also offer to the user a degree of flow control. Devices and methods which provide a way to securely close the access site in the carotid artery to avoid the potentially devastating consequences of a transcervical hematoma are also described.

Expandable catheter system for fluid injection into and deep to the wall of a blood vessel

A catheter-based/intravascular fluid injection system with application to renal denervation includes a multiplicity of needles which expand open around a central axis to engage the wall of a blood vessel, or the wall of the left atrium, allowing the injection of a cytotoxic and/or neurotoxic solution for ablating conducting tissue, or nerve fibers around the ostium of the pulmonary vein, or circumferentially in or just beyond the outer layer of the renal artery. The expandable delivery system includes expandable components that facilitate positioning of a multiplicity of injection needles against the inside wall of a blood vessel from where they can be advanced. The system also includes means to limit and/or adjust the depth of penetration of the ablative fluid into the tissue of the wall of the targeted blood vessel.

Mri-guided devices and mri-guided interventional systems that can track and generate dynamic visualizations of the devices in near real time

An MRI-guided medical device includes an elongated sheath, an elongated dilator, and an elongated needle. The sheath has a distal end, an opposite proximal end, and a central lumen extending between the proximal and distal ends. The sheath comprises MRI-compatible material and includes a tracking member located adjacent to the sheath distal end that is visible in an MRI image. The dilator comprises MRI-compatible material and is movably disposed within the sheath lumen. A distal end of the dilator is configured to extend outwardly from the sheath distal end and dilator includes at least one tracking member that is visible in an MRI image. The needle is movably disposed within the dilator lumen and is movable between stored and operative positions relative to the dilator. An RF shield may be coaxially disposed within the elongated sheath so as to surround a portion of the sheath central lumen.

System and method for delivering and deploying an occluding device within a vessel

A system and method for deploying an occluding device that can be used to remodel an aneurysm within the vessel by, for example, neck reconstruction or balloon remodeling. The system comprises an introducer sheath and an assembly for carrying the occluding device. The assembly includes an elongated flexible member having an occluding device retaining member for receiving member for engaging a second end of the occluding device and a support surrounding a portion of the elongated flexible member over which the occluding device can be positioned. The elongated flexible member may be a integral portion formed thereof that form a coil portion.

Medical delivery systems and apparatus

A catheter proximal section is preferably formed from a relatively soft part and a relatively rigid part, and includes a proximal terminal end that defines a perimeter of an opening into a lumen of the catheter. The proximal section may further include a feature for interlocking engagement with an accessory tool. An inner surface of each of the relatively soft and rigid parts may be located opposite one another, on either side of the catheter lumen. The relatively soft and rigid parts may be included in a sealing assembly that further includes an attachment feature for removable connection of the assembly to the proximal section catheter.

Mapping probe assembly with skived tube body frame

An embodiment of a mapping probe assembly includes a body frame with a lumen therein. The body frame includes a catheter shaft region, a loop section and a transition region between the catheter shaft region and a loop section. A plurality of mapping electrodes are attached around the loop section. Electrical conductors extend through the lumen of the body frame to the mapping electrodes. In some embodiments, the loop section is skived, where a portion of the body frame is removed toward the interior of the loop section. The loop section has a generally planar loop, and further has a loop center. In some embodiments, the catheter shaft has an alignment generally perpendicular to the loop section where the alignment of the catheter shaft is along a line that intersects the planar loop proximate to the loop center.

Method and Apparatus for a Right-Sided Short Sheath

An introducer sheath comprising a curved shape that follows the right sided vasculature when introduced through the right side subclavian vein and which stops far short of the coronary ostium in the right atrium. No attempt is made to access the coronary sinus through the sheath. The sheath establishes a fulcrum point on the upper lateral wall of the superior vena cava and comprises the ability to be removed from the implanted pacemaker lead without flipping the distal end of the sheath to cause a pull back of the pacemaker lead. The more proximal portions of the sheath extend through the superior vena cava and provide a force which biases the sheath against the lateral wall of the lower portion of the superior vena cava to establish a fulcrum or pivot point which positions the distal end of sheath at the desired location.

Apparatus and method for gastric bypass surgery

A medical treatment device includes an elongate member having an internal volume, a proximal end, and a distal end, the internal volume extending from the proximal end to the distal end. The medical treatment device further includes a first coupler and a second coupler, the first coupler and the second coupler coupled to the internal volume of the elongate member; a first joining member and a second joining member, the first joining member coupled to the first coupler and the second joining member coupled to the second coupler. The first joining member is configured to attach to a first biological matter location, and the second joining member is configured to attach to a second biological matter location, the second location being distal to the first location. The second coupler is configured for manipulation to align relative the first coupler such that the second biological matter location relocates adjacent the first biological matter location. The first joining member and the second joining member are configured to join the first biological matter location to the second biological matter location.

Coronary artery catheter and engaging method therefor

A coronary artery catheter adapted for introducing its distal end into a coronary ostium through an artery includes a catheter body with a lumen formed therein. The catheter body in a natural state includes: a proximal straight section extending distally from a proximal end of the catheter body; a first curved section extending distally from the proximal straight section while being curved; an intermediate straight section extending distally from the first curved section; a second curved section extending distally from the intermediate straight section while being curved; and a distalmost section extending from the second curved section to a distal end of the catheter body. The first curved section and the second curved section, when projected onto a plane on which the first curved section and the intermediate straight section are present, curve in the same direction.

Stent delivery system

An stent delivery system may include a delivery device and a tubular body having a lumen sized to slidably fit about an outer diameter of the delivery device and a drainage stent having an anchoring mechanism, wherein the delivery device includes a constraining member configured to engage an external portion of the tubular body at the proximal end of the delivery device. A method of delivering a stent may include inserting a tubular body into the port of an endoscope, inserting a stent delivery device and a stent having an anchoring mechanism into the tubular body, wherein the delivery device includes a constraining member configured to engage and retain the tubular body at the proximal end of the delivery device, advancing the drainage stent distally through the tubular body, sliding the tubular body proximally, and engaging an external portion of the tubular body with the constraining member. 1. A stent delivery system , comprising:a guide catheter comprising a distal tubular portion and a proximal elongate wire;a stent disposed about the guide catheter;a push catheter disposed about the guide catheter and positioned adjacent to the stent;a handle assembly attached to a proximal end of the push catheter; anda guidewire;wherein the guide catheter extends through a lumen of the push catheter and through a lumen of the handle assembly; andwherein the guidewire extends through a lumen of the push catheter and through a guidewire port formed in a sidewall of the push catheter.2. The stent delivery system of claim 1 , wherein the proximal elongate wire is coupled to the distal tubular portion at a rotatable connection.3. The stent delivery system of claim 2 , wherein the rotatable connection is configured to allow rotatable movement between the distal tubular portion and the proximal elongate wire.4. The stent delivery system of claim 1 , wherein the proximal elongate wire extends through the lumen of the push catheter and proximally through the handle assembly to a ...

Dilator

The shaft of a dilator has a tapered part whose outer diameter at a distal end is smaller than at a proximal end, and either a distal end part and a proximal end part, or a proximal end part without a distal end part. If only the proximal end part is provided, the pitch of neighboring sections of a spirally-arranged protruding portion on the tapered part is larger than that on the proximal end part. If both the proximal end part and the distal end part are provided, the pitch of neighboring sections of the spirally-arranged protruding portion on the tapered part is larger than those on the distal end part or the proximal end part.

Dilator

A dilator includes a shaft in a hollow shape whose distal end has a smaller outer diameter than the proximal end, and a connector on the proximal end of the shaft. A spirally-arranged protruding portion on an outer peripheral face of the shaft has gaps between neighboring sections along an axis of the shaft. The shaft has a first location and a second location located closer to the distal end than the first location and having an outer diameter smaller than at the first location. The spirally-arranged protruding portion has, with respect to the axis, an angle of inclination that is larger at the second location than at the first location.

INTRODUCER SHEATH

An introducer sheath () comprises a tubular body () with a distal portion () and a proximal portion (), the proximal portion () being configured to be inserted into the patient's body. Introducer sheath can be separated along its length in a longitudinal direction. The introducer sheath () further comprises at least a first handle () which is pivotable about a fulcrum (). The first handle () has a first end portion () and a free second end portion () so as to form a lever, such that pivoting the handle () about the fulcrum () causes a contacting portion () of the handle to act on a respective counter portion () that is operatively connected to the distal portion () of the tubular body (). This creates a breaking force that causes the distal portion () of the tubular body () to break. 1. An introducer sheath for providing access in a patient's body , comprising:a tubular body with a distal portion and a proximal portion, the proximal portion being configured to be inserted into the patient's body to allow a medical device to be inserted through the introducer sheath into the patient's body, the introducer sheath being structured to facilitate separation along its length in a longitudinal direction; andat least a first handle which is pivotable about a fulcrum, the first handle having a first end portion and a free second end portion so as to form a lever, such that pivoting the handle about the fulcrum causes a contacting portion of the handle to act on a respective counter portion that is operatively connected to the distal portion of the tubular body, thereby creating a breaking force that causes the distal portion of the tubular body to break.2. The introducer sheath according to claim 1 , wherein the fulcrum is disposed eccentrically in the first end portion of the first handle and the contacting portion is disposed at an edge of the first end portion claim 1 , wherein a distance between the contacting portion and the fulcrum is less than a distance between the ...

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 ...

Guidewire access sleeve

An access sleeve can be attached to a medical device having first and second ends, the first end being positioned inside of a patient and the second end being positioned external to a patient. The access sleeve can include a tubular sleeve body having first and second open ends that define a first lumen extending along a longitudinal axis of the sleeve body. An opening in the sleeve body can connect the first lumen to an outer surface of the sleeve body. The access sleeve can be selectively attached to the medical device (e.g. catheter of a heart pump) and inserted into the access site when the medical device is positioned in the patient. The access sleeve can maintain vascular access to a patient's access site such as an arteriotomy and can be removed without disturbing the position of the medical device.

APPLICATOR

An applicator is inserted into a living body and applies mixed solution to a region in the living body. The applicator includes a nozzle including an elongated nozzle main body to which gas and a plurality of kinds of liquids are supplied and a nozzle head at a distal end of the nozzle main body and configured to jet A mixed solution of the gas and the liquids supplied to the nozzle main body, and a sheath in which the nozzle main body is fitted for relative movement along a longitudinal axial direction of the nozzle main body. At least two crushed portions are provided contiguously to each other at a proximal end portion of the nozzle main body at the opposite side to the nozzle head such that deformation directions thereof with respect to an axial line of the nozzle main body are different from each other. 1. An applicator configured to be positioned in a living body , the applicator comprising:a sheath possessing a lumen, and open distal and proximal ends communicating with the lumen of the sheath, the sheath also possessing an inner face surrounding the lumen;a nozzle including an elongated nozzle main body possessing proximal and distal ends, a spray head connectable to different kinds of liquids to be conveyed through the nozzle main body and mixed with one another, and a nozzle head, the spray head being fixed to the proximal end of the nozzle main body so that the nozzle main body and the spray head move together as a unit, the nozzle head being fixed to the distal end of the nozzle main body so that the nozzle main body and the nozzle head move together as a unit, the nozzle head possessing a distal end at which is located an opening through which the liquids mixed together as a mixed solution are ejected together with a gas, the nozzle main body being axially movably positioned in the lumen of the sheath;the applicator being insertable into a living body to apply the mixed solution to a region in the living body;the nozzle main body including an axially ...

Applicator

An applicator is insertable into a living body to apply mixed solution to a region in the living body. The applicator includes a nozzle including an elongated nozzle main body to which gas and a plurality of kinds of liquids are supplied and a nozzle head at a distal end of the nozzle main body to jet mixed solution of the gas and the plurality of kinds of liquids supplied to the nozzle main body. The nozzle main body is positioned in a sheath for relative axial movement. A gap exists between the nozzle main body and the sheath to exhaust gas in the living body to the outside of the body when the pressure in the living body rises. The sheath has a plurality of side holes, each of which communicates with the gap.

CATHETER ADD-ON AND METHODS OF PRODUCING AND USING SAME

An apparatus comprising: (a) a main body adapted to engage and retain a catheter therein at a fixed point relative to the catheter length; and (b) a cutting mechanism adapted to sever said catheter in response to a pre-defined threshold force applied along the length of the catheter. 1. An apparatus comprising:(a) a main body adapted to engage and retain a catheter therein at a fixed point relative to the catheter length; and(b) a cutting mechanism adapted to sever said catheter in response to a pre-defined threshold force applied along the length of the catheter.23-. (canceled)4. An apparatus according to claim 1 , wherein said cutting mechanism employs a fixed blade.5. An apparatus according to claim 4 , comprising a pair of arms with an aperture between them positioned between said fixed blade and a catheter engaged and retained in said main body.6. An apparatus according to claim 5 , comprising a blade holder designed and configured to hold said blade in a fixed orientation with respect to said arms and with respect to said main body.7. An apparatus according to claim 5 , wherein said pair of arms are integrally formed with or attached to a portion of said main body claim 5 , and comprising a blade holder designed and configured for insertion in a corresponding socket in said main body.8. An apparatus according to claim 4 , wherein said fixed blade is embedded within a resilient material.9. (canceled)10. An apparatus according to wherein said fixed blade is separated from said catheter by a break-away pin when said catheter is engaged and retained by said main body.11. An apparatus according to claim 1 , wherein said cutting mechanism includes one or more blades which move in response to application of the threshold force.1213-. (canceled)14. An apparatus according to claim 1 , comprising a tensioning collar adapted to restrict axial translation of said main body with respect to a catheter retained therein.15. A method comprising:(a) fashioning a main body ...

Vascular access configuration

One embodiment is directed to a geometric adaptor apparatus for assisting with translumenal vascular access, comprising a dilator adaptor member having proximal and distal ends and defining a dilator adaptor lumen therethrough, wherein the dilator adaptor lumen is defined by an inner diameter profile sized to accommodate insertion of one or more portions of a guidewire, and wherein the dilator adaptor is further defined by an outer diameter profile sized to accommodate at least partial insertion of the proximal end of the dilator adaptor into a dilator member lumen formed through a dilator member, the dilator member being coupleable to an introducer catheter member through an introducer member lumen formed through the introducer member.

METHODS AND SYSTEMS FOR TREATMENT OF ACUTE ISCHEMIC STROKE

Described are methods and systems for transcervical access of the cerebral arterial vasculature and treatment of cerebral occlusions, including ischemic stroke. The methods and devices may include methods and devices which may provide aspiration and passive flow reversal, those which protect the cerebral penumbra during the procedure to minimize injury to brain, as well as distal catheters and devices to remove an occlusion. The methods and devices that provide passive flow reversal may also offer to the user a degree of flow control. Devices and methods which provide a way to securely close the access site in the carotid artery to avoid the potentially devastating consequences of a transcervical hematoma are also described. 135.-. (canceled)36. A system of devices for performing a medical procedure at a treatment site in a cerebral vessel of a patient , the system comprising:a catheter having a catheter lumen having an inner diameter and a distal end; andan inner member sized to slide within the catheter lumen, wherein the inner member defines a single lumen and has a distal portion and a distal-most end having a distal opening, the distal portion having a first outer diameter that tapers distally to a second outer diameter that is smaller than the first outer diameter,wherein the system is in an advancement configuration when the inner member is positioned coaxially in the catheter lumen with the distal portion positioned distal to the distal end of the catheter,wherein a flexibility of the distal portion decreases smoothly from a flexibility at the second outer diameter to a flexibility at the first outer diameter when the system is in the advancement configuration, andwherein the system of devices is sufficiently flexible that, when the system is in the advancement configuration, the system is configured to be advanced distal to a petrous portion of an internal carotid artery.37. The system of claim 36 , wherein a stent retriever is positioned within the single ...

STEERABLE ENDOLUMINAL PUNCH

An endoluminal needle or punch is describes wherein the distal end of the endoluminal needle is able to articulate laterally out of the longitudinal axis of the steerable endoluminal needle. The endoluminal needle further comprise a blunted distal end configuration that is minimally traumatic. Under control by the user, at the proximal end of the endoluminal needle, a sharp stylet can be advanced to punch tissue and then be retracted to maximize safety. The endoluminal needle is configured for use within an introducer. 1. A device for penetrating a body lumen or hollow organ of a mammal comprising:an outer tube, said outer tube characterized by a distal end, and proximal end, and an outer tube lumen extending from the distal end to the proximal end thereof, said outer tube having a flexible region near the distal end of the outer tube;a first control rod disposed within the outer tube, said first control characterized by a distal end and a proximal end, said first control rod comprising a partial cylinder, wherein the control rod is longitudinally fixed to the distal end of the outer tube and extends proximally to the proximal end of the outer tube; anda hub disposed at the proximal end of the outer tube, said hub operable to pull the proximal end of the first control rod to exert compression force on the outer tube and thereby cause deflection of the flexible region relative to the less flexible regions of the outer tube proximal to the flexible region.2. The device of claim 1 , further comprising:a second control rod disposed within the outer tube, said second control rod characterized by a distal end and a proximal end, said first control rod comprising a partial cylinder, wherein the second control rod is longitudinally fixed to the distal end of the outer tube and extends proximally to the proximal end of the outer tube; whereinthe hub further is further operable to tension the proximal end of the second control rod to cause deflection of the flexible region ...

DELIVERY SYSTEM AND METHOD OF ASSEMBLING SUCH

A catheter delivery system () includes: (i) an introducer sheath (); (ii) a catheter () disposed at least partially within the introducer sheath and movable axial along the introducer sheath; (iii) an invaginating tube () sealably secured at or near a first axial end () of the invaginating tube to the introducer sheath at or near a first axial end ( ) of the introducer sheath; (iv) a runner () slidably connected to the catheter; (v) the invaginating tube being sealably secured at or near a second axial end () of the invaginating tube to the runner, such that the runner with inavaginating tube secured thereto is sealably connected to the catheter and movable axially along at least a portion of the catheter; and (vi) means for pressurising the annular space defined between the introducer sheath, the catheter and the invaginating tube. 1. A delivery system including:an introducer sheath;a catheter disposed at least partially within the introducer sheath and movable axial along the introducer sheath;an invaginating tube sealably secured at or near a first axial end of the invaginating tube to the introducer sheath at or near a first axial end of the introducer sheath;a runner slidably connected to the catheter;the invaginating tube being sealably secured at or near a second axial end of the invaginating tube to the runner, such that the runner with inavaginating tube secured thereto is sealably connected to the catheter and movable axially along at least a portion of the catheter; andmeans for pressurising the annular space defined between the introducer sheath, the catheter and the invaginating tube.2. A delivery system according to claim 1 , wherein the runner is made of a material that is different to the material from which the invaginating tube is made.3. A delivery system according to claim 2 , further including an inflatable balloon on the catheter.4. A delivery system according to claim 3 , further including a limiter on the catheter claim 3 , and wherein:the ...

CATHETER ASSEMBLY WITH SEGMENTED STABILIZATION SYSTEM

A catheter assembly with segmented or step-wise deployment stabilization system includes a base or handle, puncture needle extending from the handle, and a deployment mechanism or mechanisms to selectively extend from the distal end of the needle for first length a hollow stabilizing component and as a second step to a second further length a stabilizing guide wire element. The hollow stabilizing component has some degree of flexibility as does the guide wire to minimize chance of damage to surrounding tissue. The user can feel resistance and have the opportunity to retract either component and attempt redeployment without a retraction of the puncture needle and a second poke of the patient's skin. In the example for peripheral venous catheterization, the system reduces the probability of blood vessel puncture. The deployment mechanism can have a guiding system which ensures the proper sequence of deployment. 1. An apparatus designed for facilitating subcutaneous insertion of a catheter comprising:a hollow needle assembly comprising a hollow needle having a longitudinal axis and a distal end; anda hollow stabilizing component assembly comprising a hollow stabilizing component having a longitudinal axis and a distal end, the hollow stabilizing component coaxial to and selectively movable between a retracted position along the longitudinal axis of the needle to a deployed position extended past the distal end of the needle;wherein the needle is configured to provide subcutaneous access and the hollow stabilizing component is configured to provide a first support and guide section extendible from the needle.2. The apparatus of claim 1 , further comprising an additional stabilizing component selectively movable between a retracted position along the longitudinal axis of the hollow stabilizing component to a deployed position extended from the distal end of the hollow stabilizing component so that the needle is operable to provide subcutaneous access claim 1 , wherein ...

Catheter shaft with improved manifold bond

A catheter shaft with an improved manifold bond and methods for making and using the same. The catheter shaft may include a sleeve disposed, for example, near its proximal end. The sleeve may include a first layer that is attached to the catheter shaft and a second layer to which a hub or manifold may be attached.

INTRODUCER-BASED BLEED DETECTION TECHNIQUE

An embodiment of a system is disclosed including an introducer usable to insert a catheter into a blood vessel of a patient. The introducer further includes a hollow sheath to receive the catheter when inserting the catheter into the blood vessel. In addition, the system includes a hollow sleeve to be disposed around the sheath. Further, the system includes a first electrode provided on the sleeve. Still further, the system includes a measuring device to be coupled to the first electrode and to a second electrode to be coupled to the first electrode through the patient's tissue. The measuring device is configured to detect a bleed in the patient's tissue by computing an impedance or a conduction velocity between the first electrode on the sleeve and the second electrode. 1. A system comprising:an introducer usable to insert a catheter into a blood vessel of a patient, the introducer comprising a hollow sheath to receive the catheter when inserting the catheter into the blood vessel;a hollow sleeve to be disposed around the sheath;a first electrode provided on the sleeve; anda measuring device to be coupled to the first electrode and to a second electrode to be coupled to the first electrode through the patient's tissue, wherein the measuring device is configured to detect a bleed in the patient's tissue by computing an impedance or a conduction velocity between the first electrode on the sleeve and the second electrode.2. The system of claim 1 , wherein the second electrode is provided on the sleeve.3. The system of claim 1 , wherein the second electrode is disposed externally to a body of the patient.4. The system of claim 1 , wherein both the first electrode and the second electrode are external to the blood vessel.5. The system of claim 1 , wherein the measuring device is configured to transmit the computed impedance or conduction time to an external device through a wireless signal.6. The system of claim 1 , wherein the first electrode is coupled to the ...

Splitable Needle and Dilator Catheter Placement Device and Associated Methods

Disclosed herein is a catheter placement system including a splittable needle and dilator. The system can include a housing having one or more flexible sections and a pleated section. A user can grasp an elongate medical device using the flexible sections and transition the housing pleated section between an extended and collapsed configuration to urge the elongate medical device proximally or distally. The system can also include a needle retraction mechanism configured to split the needle long a longitudinal axis and roll up the separate portions to allow one or more elongate medical devices to pass therebetween. The system can also include a dilator splitter configured to separate a dilator along a longitudinal axis and radially displace the dilator portions to allow one or more elongate medical devices to pass therebetween. Advantageously, the system can maintain the elongate medical device in a sterile environment, mitigating the introduction of pathogens. 1. A catheter placement system , comprising:a catheter housing defining a longitudinal axis;an elongate medical device disposed within an interior cavity of the catheter housing; anda needle housing including a needle extending distally therefrom, the needle housing releasably coupled to a distal end of the catheter housing and including a needle retraction mechanism configured to split the needle along a longitudinal axis and retract the needle into the needle housing.2. The catheter placement system according to claim 1 , wherein the needle housing includes a needle retraction lever hingedly coupled thereto and configured to actuate a gear mechanism disposed within the needle retraction mechanism.3. The catheter placement system according to claim 1 , wherein the needle retraction mechanism is configured to roll up a portion of the needle about an axis extending perpendicular to the longitudinal axis.4. The catheter placement system according to claim 1 , wherein the needle includes a sheath disposed on an ...

Transcatheter insertion device and method

The present invention relates to a transcatheter method for providing fluid communication between two anatomical compartments. The present invention also relates to a transcatheter system comprising an intracorporeal connector for fluid communication between two anatomical compartments through at least one anatomical wall, wherein said connector is adapted to receive a flow regulating device, a connector, a flow regulating device and an insertion device.

IMPROVED BALLOON CATHETER WITH PEELABLE REMOVABLE SHEATH FOR USE IN INDUCING LABOR

The claimed invention provides a catheter for inducing labor comprising a balloon catheter; a removable sheath (preferably peelable) that covers the inflation tube; wherein the sheath is removable after insertion of the catheter by removing/peeling off the sheath from the inflation tube. 1. A catheter for inducing labor , the catheter comprising:a) a balloon catheter comprising an inflation tube and a balloon;b) a removable sheath that covers the inflation tube; wherein the sheath is removable after insertion of the catheter by peeling off or removing the sheath from the inflation tube.2. The catheter for wherein the catheter is a Foley catheter.3. The catheter of wherein the catheter is a 14 claim 2 , 16 or 18 French sized Foley catheter.4. The catheter of wherein the sheath comprises perforations to facilitate the peeling off of the sheath after insertion.5. The catheter of wherein the sheath further comprises a tab near the perforations to facilitate the peeling off of the sheath after insertion.6. The catheter of wherein the removable sheath is peelable.7. A method of inducing ripening of the cervix to induce labor using the catheter of claim 1 , the method comprisinga) prior to inflation, placing at least a portion of the balloon through an undilated or partially dilated cervix such that a distal end of the balloon extends into the uterine region, and a proximal end with the inflation tube attached extends into the vaginal region, while the center portion of the balloon passes into and remains inside the cervical region;b) inflating the balloon with a fluid such as air, sterile water, or a sterile saline solution, to cause the outside wall of the balloon to press radially against the cervix to induce ripening of the cervix;c) removing the sheath after insertion of the catheter.8. A catheter for inducing labor claim 1 , the catheter comprising:a) a balloon catheter comprising an inflation tube and a balloon; andb) a sheath that covers the inflation tube. This ...

VALVE FOR DILATOR AND SHEATH ASSEMBLY

A valve for sealing the hub of a sheath assembly is provided. The valve includes a valve body having a solid thickness extending between a proximal surface and a distal surface. A bisecting slot extends across the proximal surface of the valve body and terminates at a depth less than the thickness of the valve body such that a portion of the valve body distally of the slot defines a bridge extending between opposed halves of the valve body such that the distal surface of the valve body is substantially continuous and a central portion of the proximal surface of the valve body is concave and defines a concave proximal portion. 1. A valve for sealing the hub of a sheath assembly comprising:a valve body having a solid thickness extending between a proximal surface and a distal surface, wherein a bisecting slot extends across the proximal surface of the valve body and terminates at a depth less than the thickness of the valve body such that a portion of the valve body distally of the slot defines a bridge extending between opposed halves of the valve body such that the distal surface of the valve body is substantially continuous and further wherein a central portion of the proximal surface of the valve body is concave and defines a concave proximal portion.2. The valve according to wherein the valve body includes a groove in the distal surface extending about the central portion.3. The valve according to wherein a portion of the distal surface of the valve body opposite the concave proximal portion is convex.4. The valve according to wherein a sealing slit extends through the valve body from the proximal surface of the valve body to the distal surface of the valve body.5. The valve according to wherein the sealing slit extends at an angle between 45° to 135° relative to the bisecting slot.6. The valve according to wherein the sealing slit extends at an angle of approximately 90° relative to the bisecting slot.7. The valve according to wherein the sealing slit extends at ...

METHODS FOR EXCHANGING DEVICES

A method for replacing a first sheath, whose distal end is positioned inside a vessel and whose proximal end is positioned outside the skin of a patient, with a second sheath may involve inserting a dilator over a guidewire and into the first sheath until a distal end of the dilator and a distal end of the guidewire are positioned inside the vessel. The dilator may be hubless or include a removable hub, and may define an external channel configured to receive a second guidewire. The method may further involve removing the first sheath, thereby leaving the dilator and the guidewire in place. After removing the first sheath, a second sheath may be passed over the dilator and the guidewire until the distal end of the second sheath is positioned inside the vessel. The method may further involve removing the dilator and the guidewire, leaving the second sheath in place. 1. A method for replacing a first sheath , whose distal end is positioned inside a vessel and whose proximal end is positioned outside the skin of a patient , with a second sheath , the method comprising the steps of:inserting a dilator over a guidewire and into the first sheath until a distal end of the dilator and a distal end of the guidewire are positioned inside the vessel;removing the first sheath, thereby leaving the dilator and the guidewire in place;passing the second sheath over the dilator and the guidewire until a distal end of the second sheath is positioned inside the vessel; andremoving the dilator and the guidewire, thereby leaving the second sheath in place.2. The method of claim 1 , further comprising inhibiting patient blood loss through a puncture hole in a wall of the vessel using the combination of the dilator and the guidewire to substantially fill the puncture hole.3. The method of claim 1 , wherein the dilator is hubless and defines a lumen configured to receive the guidewire.4. The method of claim 1 , wherein the dilator includes a removable hub and defines a lumen configured to ...

INSERTION TOOLS FOR MEDICAL DEVICE

The disclosure provides insertion tools and articles that facilitate entry of a medical device, such as a balloon catheter, into the body. In embodiments the insertion tools have an elongate hollow body () that is able to protect a portion of a medical device, such as a balloon of a balloon catheter, during an insertion procedure. In one embodiment the insertion tool has an elongate hollow body (), a tapered distal end (), and a locking mechanism () at the proximal end which can secure a portion of a balloon catheter. An opening at the distal end can allow passage of the balloon in a folded uninflated state. 1. An insertion tool for facilitating the entry of a balloon catheter into the body , the tool comprising:an elongate hollow body comprising proximal and distal ends, wherein body is tapered at its distal end and includes an opening sized to accommodate and allow the passage of a balloon portion of a balloon catheter when the balloon portion is in a folded uninflated state,a locking mechanism located on the proximal end of the elongate hollow body capable of securing a portion of the balloon catheter that is proximal to the balloon portion in place to restrict movement of the balloon catheter in a proximal to distal direction.2. The insertion tool of wherein the locking mechanism comprises a valve having an adjustably sized opening within the center of the valve.3. The insertion tool of wherein the locking mechanism comprises an iris valve.4. (canceled)5. (canceled)6. An insertion tool for facilitating the entry of a balloon catheter into the body claim 1 , the tool comprising:first and second elongate hollow bodies comprising proximal and distal ends, wherein the proximal end of the first elongate hollow body has an outer diameter that is slidably movable within an inner diameter of the distal end of the second elongate hollow body, wherein the first elongate hollow body includes an opening sized to accommodate and allow the passage of a balloon portion of a ...

Trapping Catheter and Kit and Method for Preparing A Trapping Catheter

Trapping catheter and kit and method for preparing a trapping catheter A trapping catheter () for insertion into a guide catheter assembly () comprises a balloon () and a trapping catheter body () bounding an inflation lumen () extending longitudinally within the trapping balloon catheter. The inflation lumen has a distal end opening () into an internal space bounded by the balloon. The trapping catheter body is provided with a stopper () for abutting against an abutment () at a proximal end () of the guide catheter assembly so as to determine a maximum insertion depth of the trapping catheter into the guide catheter. A kit and method for preparing a trapping catheter prior to insertion into a guide catheter is also described. 1. A trapping catheter for insertion into a guide catheter assembly comprising a guide catheter and a valve fitting mounted to a proximal end of the guide catheter , the trapping catheter comprising a balloon and a trapping catheter body bounding an inflation lumen extending longitudinally within the trapping catheter , the inflation lumen having a distal end opening into an internal space bounded by the balloon , wherein the trapping catheter body is provided with a stopper for abutting against an abutment at a proximal end of the guide catheter assembly so as to determine a maximum insertion depth of the trapping catheter into the guide catheter assembly.2. A trapping catheter according to claim 1 , wherein the stopper projects further to one radial side of the trapping catheter body than to an opposite side of the trapping catheter body.3. A trapping catheter according to claim 2 , wherein the stopper projects to one radial side of the trapping catheter body only.4. A trapping catheter according to claim 3 , wherein the stopper comprises a curved section of the trapping catheter body.5. A trapping catheter according to claim 4 , wherein the curved portion has a radius of less than 5 mm.6. A trapping catheter according to claim 5 , wherein ...

DELIVERY DEVICE FOR A VASCULAR ACCESS INSTRUMENT

A delivery device for delivering an instrument into a catheter assembly may include a housing having a proximal end, a distal end, and a slot. The delivery device may include a guide feature, which may be disposed within the housing. The guide feature may extend through the slot. The delivery device may include an instrument disposed within the housing and extending through the guide feature. In response to movement of the guide feature along the slot in the distal direction a first distance, a first end of the instrument may be advanced in the distal direction a second distance, which may be greater than the first distance. A second end of the instrument may be stationary with respect to the housing. 1. A delivery device for delivering an instrument into a catheter assembly , comprising:a housing having a proximal end, a distal end, and a slot;a guide feature disposed within the housing, wherein the guide feature extends through the slot, wherein the guide feature comprises a channel, wherein the channel is generally U-shaped; andan instrument disposed within the housing and extending through the channel, wherein in response to movement of the guide feature along the slot in a distal direction, the instrument moves through the channel and a first end of the instrument is advanced in the distal direction, wherein a second end of the instrument is stationary with respect to the housing.2. The delivery device of claim 1 , wherein in response to movement of the guide feature along the slot in the distal direction a first distance claim 1 , the first end of the instrument is advanced in the distal direction a second distance claim 1 , wherein the second distance is greater than the first distance.3. The delivery device of claim 1 , wherein the first end of the instrument is advanced in the distal direction beyond the distal end of the housing in response to the guide feature being fully advanced along the slot in the distal direction.4. The delivery device of claim 1 , ...

Dilator

A dilator includes a hollow shaft having a tapered portion and a body portion having a distal end located at a proximal end of the tapered portion. The tapered portion has an outer diameter that is smaller at a distal end than at a proximal end, and the body portion extends toward a proximal end side in an axis direction of the shaft. A spirally-arranged protruding portion is provided on an outer peripheral surface of the tapered portion, and the spirally-arranged protruding portion has gaps between adjacent portions of the spirally-arranged protruding portion along an axis direction of the shaft. A proximal end of the spirally-arranged protruding portion is located at the proximal end of the tapered portion.

GUIDEWIRE SYSTEMS AND METHODS FOR PREVENTING WIRE ADVANCEMENT INTO THE BODY DURING CATHETERIZATION

A guidewire and catheter are disclosed which are configured together so that it is not possible to advance the guidewire into the patient where it may be undesirably retained in the patient. The improved safety is achieved by protrusions on each of the guidewire and catheter which coordinate with one another. Novel methods of catheterization are also disclosed. 1. A system for reducing or preventing unintentional advancement of a guidewire during catheterization , comprisinga guidewire with at least one guidewire protrusion on an external surface of the guidewire; anda catheter with a lumen and at least one catheter protrusion on an internal surface of the catheter,wherein a diameter of the guidewire is smaller than a diameter of the lumen of the catheter,wherein the protrusions of the guidewire and catheter are configured to cooperate with one another such that (i) the catheter protrusion is moveable past the guidewire protrusion in a first direction and (ii) the catheter protrusion is immovable past the guidewire protrusion in a second direction, wherein the first and second directions are opposite one another.2. The system of claim 1 ,wherein the guidewire has a first cross-sectional size at the guidewire protrusion,wherein the lumen has a second cross-sectional size at the catheter protrusion, andwherein the first cross-sectional size is greater than the second cross-sectional size.3. The system of claim 1 , wherein the guidewire comprises a plurality of guidewire protrusions on an external surface of the guidewire.4. The system of claim 1 , wherein the guidewire protrusion is nondeformable claim 1 , and wherein a body of the catheter and/or the catheter protrusion is deformable.5. The system of claim 1 , wherein the catheter protrusion is configured with variable stiffness such that deformation in one direction requires less force than deformation in another direction.6. The system of claim 1 , wherein the guidewire protrusion is at a proximal end of the guide ...

CATHETERIZATION APPARATUS AND METHODS THEREOF

A containing catheter for facilitating sequential treatment operations therethrough, is provided. The containing catheter comprises a median portion comprising an elongated, substantially tubular member, and a distal portion, comprising a distal stiff member. A catheterization apparatus is provided, comprising the containing catheter and an elongated inner catheter insertable into the containing catheter. A method of catheterization is provided, comprising providing the containing catheter, stiffening a portion of the containing catheter and inserting the stiffened containing catheter into a body conduit of a patient. 2. The catheterization apparatus of wherein said tubular member is stiff and flexible.3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. The catheterization apparatus of further comprising a proximal portion comprising a rear connector having a front opening claim 1 , a rear opening claim 1 , a side opening and a connector void inside claim 1 , said connector void providing fluid communication between said front opening claim 1 , said rear opening and said side opening claim 1 , and wherein said rear connector is physically associated with said proximal end of said tubular member thereby providing fluid communication between said main lumen and said connector void.13. The catheterization apparatus of further comprising at least one stiffening lumen extending at least along said tubular member of said median portion between a stiffening lumen proximal end and a stiffening lumen distal end claim 12 , having a single stiffening lumen opening at said stiffening lumen proximal end allowing to pressurize a fluid into said stiffening lumen and thereby to stiffen said tubular member and hence to stiffen said median portion.14. (canceled)15. The catheterization apparatus of wherein said connector void extends along a substantially straight line between said front opening and said rear ...

Devices and methods for nerve modulation

Systems for nerve and tissue modulation are disclosed. An illustrative system may include an intravascular nerve modulation system including a catheter shaft, an expandable basket and one or more electrode assemblies affixed to the expandable basket. The one or more electrode assemblies may be affixed to the expandable basket using one or more covers or coatings.

Enhanced ultrasound visualization of intravascular devices

Methods and devices for providing improved ultrasound visibility of medical devices intended for intravascular use are described. The inclusion of gas/solid boundary regions within a medical devices improves the resolution of the device under ultrasound visualization. Gas/solid boundary regions may be provided through the use of embedded gas-filled microlumens, microwells, or enclosed pockets within the medical device.

ENDOVENTRICULAR INJECTION CATHETER SYSTEM WITH INTEGRATED ECHOCARDIOGRAPHIC CAPABILITIES

Methods of providing image-guided transendocardial injection of a therapeutic agent into a left ventricular wall of a heart. Some methods enable injections into heart tissue under visualization. The methods may include providing an endoventricular injection catheter having integrated echocardiographic capability. The endoventricular injection catheter may have an imaging core and an injection system carried on the elongated body with the imaging core. The method may include positioning the endoventricular injection catheter into the left ventricle of the heart, which inserts the imaging core into the heart. The method may also include transmitting ultrasonic energy via the imaging core, receiving reflected ultrasonic energy at the distal end, visualizing the left ventricular wall of the heart using the imaging core, identifying infarct regions of the left ventricle, and injecting a therapeutic agent into the visualized infarcted regions of the left ventricle using the injection system. 1. A method of providing image-guided transendocardial injection of a therapeutic agent into a left ventricular wall of a heart , comprising:providing an endoventricular injection catheter having integrated echocardiographic capability, the endoventricular injection catheter having an elongated body with a first housing, a second housing and a distal section positioned distal to the second housing in a longitudinal direction, the distal section having a distal end and an imaging core and an injection system carried on the elongated body with the imaging core;positioning the endoventricular injection catheter into the left ventricle of the heart, thereby inserting the imaging core into a heart;transmitting ultrasonic energy via the imaging core;receiving reflected ultrasonic energy at the distal end;visualizing the left ventricular wall of the heart using the imaging core;identifying infarct regions of the left ventricle; andinjecting a therapeutic agent into the visualized infarcted ...

Neurovascular Distal Access Support Catheters, Aspiration Catheters, or Device Shafts

A catheter or shaft, such as a distal access support or aspiration catheter, is provided that is configured to be advanced at least partially within a patient. The catheter or shaft may include a flexible and hollow shaft including a proximal end and a distal end. The flexible and hollow shaft may include a slotted portion with a plurality of slotted openings, the slotted portion including a first segment with a first pattern of slotted openings and a second segment extending proximally relative the first segment with a second pattern of slotted openings different from the first pattern.

Anchoring delivery system and methods

An anchoring delivery system for use in an intracranial artery is provided including a tethering device having an elongated tether and an anchor coupled to a distal end of the tether. The anchor is deployable from a low profile configuration to a higher profile configuration to fix the distal end of the tether at an anchoring site in an anchoring vessel. The tethering device is configured to be used with a guide-sheath having a lumen configured to receive the tether. Related devices, systems, and methods are also described.

Apparatus and methods for delivery, repositioning, and retrieval of transcatheter prosthetic valves

Apparatus and methods are described herein for use in the delivery and deployment of a prosthetic mitral valve into a heart. In some embodiments, an apparatus includes a catheter assembly, a valve holding tube and a handle assembly. The valve holding tube is releasably couplable to a proximal end portion of the catheter assembly and to a distal end portion of the handle assembly. The handle assembly includes a housing and a delivery rod. The delivery rod is configured to be actuated to move distally relative to the housing to move a prosthetic heart valve disposed within the valve holding tube out of the valve holding tube and distally within a lumen of the elongate sheath of the catheter assembly. The catheter assembly is configured to be actuated to move proximally relative to the housing such that the prosthetic valve is disposed outside of the lumen of the elongate sheath.

Systems And Methods For Needle And Catheter Advancement

Intravenous access is achieved by introducing a catheter over an access needle which is initially present in the catheter. A tapered dilating element is positioned over the needle and provides a transition between the needle and a larger catheter lumen. The access needle is hollow and has a port which allows blood to flash back through a lumen of the catheter so that flashback can be observed on a catheter hub or the catheter itself. 1. A method , comprising: a catheter; and', 'a needle including a dilating element secured to an exterior of the needle at a distal portion of the needle proximate a tissue-penetrating distal end thereof, the dilating element having an outer diameter equal to or greater than a diameter of an opening at a distal end of the catheter, the needle situated in a first medical device position such that at least a portion of the dilating element is in the opening and the tissue-penetrating distal end is distal of the opening;, 'obtaining a medical device, comprisingpenetrating the vein with the tissue-penetrating distal end of the needle;moving the distal end of the catheter into the vein;advancing the catheter into the vein over the needle; andremoving the needle from the catheter lumen.2. The method according to claim 1 , wherein the needle includes a flashback port proximal of the dilating element claim 1 , and wherein the catheter includes a transparent or translucent region proximate the distal end thereof claim 1 , the method further comprising observing blood through the transparent or translucent region after the penetrating step claim 1 , but before the moving step claim 1 , to ensure that the distal end of the needle is within the vein.3. The method according to claim 1 , wherein the medical device further comprises a guidewire claim 1 , the method further comprising inserting at least a distal end of the guidewire through the tissue-penetrating distal end of the needle and into the vein prior to the advancing step.4. The method ...

Introducer sheath

An introducer sheath is configured to inhibit or prevent a distal section from being curled even when the wall thickness thereof is reduced, an introducer sheath is formed from a sheath tube that has a hollow section into which an elongated body can be inserted, and includes a sheath distal section and a sheath main body section. In the sheath for an introducer, the sheath distal section is formed to be harder than the sheath main body section.

ASPIRATION CATHETER SYSTEMS AND METHODS OF USE

Described are methods, systems, devices for facilitation of intraluminal medical procedures within the neurovasculature. A catheter advancement device includes a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween. The flexible elongate body has a proximal segment, an intermediate segment, and a tip segment. The proximal segment includes a hypotube coated with a polymer. The intermediate segment includes an unreinforced polymer having a durometer of no more than 72 D. The tip segment is formed of a polymer different from the intermediate segment and has a durometer of no more than about 35 D and a length of at least 5 cm. The tip segment has a tapered portion that tapers distally from a first outer diameter to a second outer diameter over a length of between 1 and 3 CM. 126.-. (canceled)27. An intravascular catheter advancement device for advancing a catheter within the vasculature , the catheter advancement device comprising:a flexible elongate body having a proximal end, a distal end, and a single lumen extending therebetween, the flexible elongate body comprising:a proximal segment, wherein the proximal segment comprises a hypotube;an intermediate segment comprising an unreinforced polymer having a first durometer; anda tip segment formed of a polymer different from the unreinforced polymer of the intermediate segment, the polymer of the tip segment having a second durometer less than the first durometer, wherein the tip segment has a tapered portion that tapers distally from a first outer diameter of between 0.048″ and 0.080″ to a second outer diameter of about 0.031″ up to about 0.048″ over a length between 0.5 cm and 4.0 cm,wherein the catheter advancement device has a length configured to extend from outside a patient's body, through a femoral artery, and to the vasculature.28. The device of claim 27 , wherein a taper angle of a wall of the tapered portion relative to a center line of the tapered portion is ...

ROTARY SHEATH WITHDRAWAL SYSTEM AND METHOD

A device for withdrawing a sheath from a shaft includes a housing a flexible timing belt that is a continuous band forming a loop that has an inner surface and an outer surface. The timing belt has a plurality of belt teeth on a surface of the timing belt. The delivery device is by rotation of a barrel that is actuated by an actuator coupled to a barrel having a plurality of teeth such that rotation of the barrel such that the barrel teeth engages the belt teeth to cause movement of the timing belt causing movement of the outer sheath. 1. A device for withdrawing a sheath from a support shaft , the device comprising:a housing;a flexible timing belt, wherein the flexible timing belt is a continuous band forming a loop having an inner surface and an outer surface and having a first plurality of belt teeth and a second plurality of belt teeth extending from the flexible timing belt;a timing belt link coupled to the sheath such that movement of the timing belt link causes movement of the sheath;a barrel within the handle, the barrel rotatably coupled to the housing and having barrel teeth corresponding to at least one of the first plurality of belt teeth and the second plurality of belt teeth and an actuator operationally coupled to the barrel to impart rotational motion to the barrel such that rotation of the barrel causes movement of the barrel such that the barrel teeth engage at least one of the first plurality of belt teeth and the second plurality of belt teeth to cause movement of the timing belt causing movement of the sheath via the timing belt link.2. The device of claim 1 , wherein a portion of the actuator is external to the housing claim 1 , wherein the barrel is internal to the housing and the flexible timing belt is internal to the housing.3. The device of claim 1 , wherein the first plurality of belt teeth protrudes in a first direction from the timing belt and the second plurality of belt teeth protrudes in a second direction from the timing belt.4. The ...

METHODS OF MANAGING NEUROVASCULAR OBSTRUCTIONS

Systems, methods, and devices for the treatment of acute ischemic stroke that provide immediate blood flow restoration to a vessel occluded by a clot and, after reestablishing blood flow, address the clot itself Immediate blood flow restoration advantageously can facilitate natural lysis of the clot and also can reduce or obviate the concern for distal embolization due to fragmentation of the clot. Several embodiments of the invention provide for progressive, or modular, treatment based upon the nature of the clot. For example, the progressive treatment can include immediate restoration of blood flow, in-situ clot management, and/or clot removal depending on the particular circumstances of the treatment. The in-situ clot management can include, for example, lysis, maceration, and/or removal. 120-. (canceled)21. A thrombus management method for the treatment of ischemic stroke , the method comprising:inserting a first catheter within a second catheter to a location of a thrombus in an occluded blood vessel;positioning a distal end of the first catheter past a distal end of the thrombus;inserting an expandable tip assembly comprising a self-expandable scaffold tethered to a distal end of a flexible, elongate delivery member through the first catheter;advancing the expandable tip assembly within the first catheter to a position within the first catheter such that, upon retraction of the first catheter, the self-expandable scaffold will at least partially span the thrombus;retracting the first catheter proximally, thereby causing the self-expandable scaffold to expand across at least a segment of the length of the thrombus;wherein said expansion radially compresses the thrombus against a wall of the blood vessel;wherein said radial compression of the thrombus restores blood flow within the blood vessel;while the expandable tip remains stationary, macerating the thrombus by resheathing the scaffold and unsheathing the scaffold, thereby facilitating mechanical lysis and ...

Directional balloon transseptal insertion device for medical procedures

A transseptal insertion device suitable for facilitating precise and safe transseptal puncture of a cardiac interatrial septum includes a sheath that defines a lumen and has a distal end that is closest to the cardiac interatrial septum of a patient and a proximal end that is external to the patent, a balloon that is connected to the distal end of the sheath, in which the balloon, when inflated, overhangs and extends past the distal end of the sheath, preventing accidental puncturing of the cardiac interatrial septum and stabilizing the transseptal insertion device against fossa ovalis of the cardiac interatrial septum, and a dilator that is positioned within the at least one lumen. The dilator has a distal end and is designed to and is capable of precisely puncturing the cardiac interatrial septum without the use of a needle or other sharp instrument.

EXPANDABLE SHEATH WITH ELASTOMERIC CROSS SECTIONAL PORTIONS

An expandable introducer sheath for passage of implant delivery catheters, such as catheters for delivery of prosthetic heart valves. The expandable sheath balances the amounts, shapes and positions of various stiff and elastic structures in the sheath to selectively program the expandability and buckling stiffness of the sheath. The expandable sheath can include, for example, an expandable tubular layer that includes alternating stiff and elastic wall portions of a single radial thickness. The combination of stiff and elastic wall portions allow for torque and push strength to advance the expandable sheath while at the same time accommodating temporary expansion. The expandable sheath can also be reinforced with a tubular layer of braided fibers or a stent structure for additional strength. Other embodiments include selective use of slots or gaps at the distal end of a stiff wall portion to enhance expandability and distribute strain. 1. A sheath comprising:an inner member comprising a central lumen extending therethrough and comprising a folded portion, the inner member being configured to expand to allow passage of an implant through the central lumen; andat least two circumferentially spaced, hard arc-segments positioned radially outward of the inner member and configured to reinforce the sheath, the hard arc-segments extending parallel to each other along a length of the sheath, each of the hard arc-segments comprising a curved inner surface, a curved outer surface, a first straight edge extending between the curved inner and outer surfaces, and a straight second edge extending between the curved inner and outer surfaces,wherein the folded portion of the inner member is positioned between two circumferentially spaced hard arc-segments.2. The sheath of claim 1 , wherein each outer surface of the hard arc-segments is wider than each inner surface of the hard arc-segments.3. The sheath of claim 1 , wherein when the sheath is in an unexpanded configuration claim 1 ...

Microinjection catheter

An insertion device for delivering media inside a patient includes an outer guide tube having a side port. An inner guide tube is nested within the outer guide tube and movable axially within the outer guide tube. The inner guide tube includes a deflector at an end within the outer guide tube. The device also includes a catheter nested within the inner guide tube and movable axially within the inner guide tube. The deflector of the inner guide tube is positionable such that it deflects the dispensing end of the catheter outward through the opening in the outer guide tube when the catheter is advanced axially within the inner guide tube. A therapeutic delivery cannula may be nested within the catheter, such that the deflected end of the catheter determines the direction of travel of the therapeutic delivery cannula into patient tissue when the cannula emerges from the catheter.

Dilator with engagement region

An example dilator is disclosed. The example dilator includes a hub and an elongate shaft having a distal end region, a proximal end region and a cross-sectional profile. Additionally, the proximal end region of the elongate shaft is coupled to the hub and the elongate shaft is configured to extend through at least a portion of a lumen of an expandable introducer sheath. Additionally, the cross-sectional profile of the elongate shaft includes at least one engagement portion and at least a portion of the expandable introducer sheath extends into the at least one engagement portion of the dilator.

Devices and Methods for Vascular Recanalization

In some embodiments, a medical device for recanalizing a vessel having a blockage and restoring blood flow through an obstructed blood vessel includes an expandable member coupled to a core wire and a hypotube that are movable relative to each other to manipulate the expandable member between various configurations. The expandable member having a capture structure in an expanded configuration. The expandable member can include multiple interstices formed by woven mesh filaments or braided strands through which the material blocking the vessel can pass. The capture structure can include a shape on its external surface that facilitates dislodgement and capture of the material within capture spaces created by the expandable member. Some embodiments include a capture sack or cap for capturing material and preventing material from migrating downstream of the blockage. Superoxygenated blood can be infused distal to the blockage to minimize loss of function during an ischemic event. 1. A method of treating ischemic stroke comprising:delivering a recanalization device to a neurovascular embolism that at least partially restricts blood flow through a blood vessel, the recanalization device including a tubular member, an elongate member movably disposed within the tubular member, and an expandable member constrained at a distal end to the elongate member and at a proximal end to the tubular member;actuating the recanalization device so that the expandable member expands radially outward in a controlled manner from a collapsed configuration to an expanded configuration to engage at least a portion of the neurovascular embolism and so as to provide controlled blood flow reperfusion through the embolism and treatment of ischemic stroke, wherein the expandable member defines a plurality of openings in a wall of the expandable member and an interior region in fluid communication with the plurality of openings so that at least a portion of the neurovascular embolism enters through ...

URINARY CATHETER FOR WOMEN AND PERISTALTIC PUMP

The utility model discloses a urinary catheter for women and peristaltic pump, which comprises a body tube with an inner surface and an outer surface, and further comprises an external urethral orifice fixing part which can at least sleeve the catheter tip end inside when applied, a flexible urethral guide part, a urinary catheter driving part sleeved with the cylindrical body of the external urethral orifice fixing part, a hydrophobic part for leakage stop at the urinary outlet of the urinary catheter, a thin segment, a pump tube, a tube bed and other special structures for dilating the narrowed part of the urethra, which not only eliminate the defect of the traditional “non-guided suspended placement” in a safe mode of “US-guided adjacent placement” and completely avoid contamination of the urinary catheter by the periurethral tissue, but also avoid the injury of urethral intima caused by urethral stricture in the placement procedure to the greatest extent; avoid contamination of the urinary catheter outlet by urine outflow; effectively clear the blockage of urine inlet due to blood clots and tissue masses in bladder during indwelling, and can also minimize the residual urine volume when used in conjunction with a special peristaltic pump. 11112130141513141013130141401301301111302121301101302007131771771171270131571101301000100711. A urinary catheter for women , comprising a body tube having a urinary catheter inner surface () and a urinary catheter outer surface () , comprising a urinary catheter tip () entering the bladder () when applied , a urinary catheter tail () left outside the body , and a urinary catheter middle section () connecting the urinary catheter tip () with the urinary catheter tail () , in which the tube inside is provided with a urinary catheter inner cavity () , the urinary catheter tip () is provided with a urine inlet () and the urinary catheter tail () is provided with a urine outlet (); due to the wall thickness of the urinary catheter , ...

VALVE FOR DILATOR AND SHEATH ASSEMBLY

A valve for sealing the hub of a sheath assembly is provided. The valve includes a valve body having a solid thickness extending between a proximal surface and a distal surface. A bisecting slot extends across the proximal surface of the valve body and terminates at a depth less than the thickness of the valve body such that a portion of the valve body distally of the slot defines a bridge extending between opposed halves of the valve body such that the distal surface of the valve body is substantially continuous and a central portion of the proximal surface of the valve body is concave and defines a concave proximal portion. 1. A valve for sealing a hub of a sheath assembly , the valve comprising a valve body with a thickness between a proximal surface and a distal surface , the valve body including a bisecting slot extending into and across the proximal surface of the valve body and terminating at a depth less than the thickness of the valve body such that a remaining portion of the valve body distal of the slot defines a bridge extending between opposed halves of the valve body such that the distal surface of the valve body is substantially continuous , wherein a central portion of the proximal surface of the valve body is convex and defines a convex proximal portion; and wherein the central portion includes a pilot hole coaxial with the valve body.2. The valve according to wherein as a tip of an instrument is passed through the valve claim 1 , the tip enters the slot claim 1 , pierces the bridge claim 1 , and splits the bridge outwardly from the pilot hole.3. The valve of wherein the resiliency of the valve causes the valve to seal against a stem of the instrument.4. The valve of wherein the bridge slits only enough to pass the instrument.5. The valve of wherein the resiliency of the valve causes the valve to substantially seal upon itself as the instrument is removed therefrom.6. The valve of wherein the bridge includes a central bridging portion and an outer ...

VALVE FOR DILATOR AND SHEATH ASSEMBLY

A valve for sealing the hub of a sheath assembly is provided. The valve includes a valve body having a solid thickness extending between a proximal surface and a distal surface. A bisecting slot extends across the proximal surface of the valve body and terminates at a depth less than the thickness of the valve body such that a portion of the valve body distally of the slot defines a bridge extending between opposed halves of the valve body such that the distal surface of the valve body is substantially continuous and a central portion of the proximal surface of the valve body is concave and defines a concave proximal portion. 1. A valve for sealing a hub of a sheath assembly , the valve comprising a valve body with a thickness between a proximal surface and a distal surface , the valve body including a bisecting slot extending into and across the proximal surface of the valve body and terminating at a depth less than the thickness of the valve body such that a remaining portion of the valve body distal of the slot defines a bridge extending between opposed halves of the valve body such that the distal surface of the valve body is substantially continuous and wherein the bridge includes a central bridging portion and an outer bridging portion with a central thickness of the central bridging portion being larger than an outer bridging portion thickness of the outer bridging portion and wherein a central portion of the proximal surface of the valve body is concave and defines a concave proximal portion.2. The valve of wherein the valve body includes a groove in the distal surface extending about the central portion.3. The valve of wherein a portion of the distal surface of the valve body opposite the concave proximal portion is convex.4. The valve of wherein a sealing slit extends through the valve body from the proximal surface of the valve body to the distal surface of the valve body.5. The valve of wherein the sealing slit extends at an angle between 45° to 135° ...

Catheter Having Movable Tubular Structure And Proximal Stopper

Catheter including an inner tubular member, an outer tubular member movable relative to the inner tubular member, and a movable tubular structure coupled to the outer tubular member. A medical device disposed about a distal end portion of the inner tubular member. A proximal stopper is provided having a distal end and disposed proximal to a proximal end of the movable tubular structure. The distal end of the proximal stopper is spaced from the proximal end of the movable tubular structure at least a longitudinal length dimension of the medical device, wherein the outer tubular member and the movable tubular structure are movable in a proximal direction up to engagement of the proximal stopper to deploy the medical device from the inner tubular member. 1. A catheter comprising:an inner tubular member having a proximal end portion, a distal end portion and an exterior surface, the inner tubular member further having a guidewire lumen defined therein;an outer tubular member movable relative to the inner tubular member, the outer tubular member having a proximal end, a distal end and an interior surface directed toward the exterior surface of the inner tubular member;a medical device disposed about the distal end portion of the inner tubular member, the medical device having a longitudinal length dimension;a movable tubular structure coupled to the outer tubular member; anda proximal stopper having a distal end and disposed proximal to a proximal end of the movable tubular structure, the distal end of the proximal stopper being spaced from the proximal end of the movable tubular structure at least the longitudinal length dimension of the medical device, wherein the outer tubular member and the movable tubular structure are movable in a proximal direction up to engagement of the proximal stopper to deploy the medical device from the inner tubular member.2. The catheter according to claim 1 , wherein the longitudinal length dimension of the medical device comprises a ...

INFUSION THERAPY DEVICE

An infusion device is disclosed. The infusion device comprises an inner delivery sleeve, an outer sleeve, and a medical balloon. The inner delivery sleeve defines a lumen therethrough, and having at least one opening at or adjacent a distal end that is in communication with the lumen. The outer sleeve is disposed about the inner delivery sleeve. The medical balloon is sealing mounted to the outer sleeve. The outer sleeve includes an inner lumen that is configured to be in communication with a source of pressurized fluid such that the medical balloon may be selectively inflated or deflated. The lumen of the inner delivery sleeve is configured to be in communication with a source of a therapeutic agent such that the therapeutic agent may be selectively delivered through the lumen of the inner delivery sleeve and exit out of the at least one opening, which is positioned distally of the medical balloon. 1. An infusion device , comprising:an inner delivery sleeve defining a lumen therethrough, and having at least one opening at or adjacent a distal end that is in communication with the lumen;an outer sleeve disposed about the inner delivery sleeve;a medical balloon sealing mounted to the outer sleeve; wherein the outer sleeve includes an inner lumen and wherein the inner lumen is configured to be in communication with a source of pressurized fluid such that the medical balloon may be selectively inflated or deflated; andwherein the lumen of the inner delivery sleeve is configured to be in communication with a source of a therapeutic agent such that the therapeutic agent may be selectively delivered through the lumen of the inner delivery sleeve and exit out of the at least one opening.2. The infusion device of claim 1 , wherein the outer sleeve is selectively slidable over the inner delivery sleeve.3. The infusion device of claim 1 , further comprising a connection member mounted to a proximal end of the inner delivery sleeve;wherein the connection member is configured ...

Adaptable Wound Drainage System

Provided are drainage systems that may include a drainage manifold and may be suitable for draining fluid from a tissue site. The drainage manifold may include a plurality of elongate members having a moveable end that may be adapted to configure the drainage manifold to treat a uniquely shaped tissue site. The drainage manifold may be coupled to a drainage tube with a transitional connector to provide a drainage system capable of distributing reduced pressure to the tissue site to enhance the drainage of fluids.

Locally distributed keyword detection

In one aspect, a playback device includes a command-keyword engine having a local natural language unit (NLU). The playback device detects, via the command-keyword engine, a first command keyword in voice input of sound detected by one or more microphones of the playback device. The playback device determines whether the sound input data includes a keyword from a first predetermined library of keywords via a local natural language unit (NLU). The playback device transmits the input sound data to a second playback device over a local area network, the second playback device employing a second local NLU with a second predetermined library of keywords. The playback device receives a response from the second playback device and performs an action based on an intent determined by at least one of the first NLU or the second NLU according to the keywords in the voice input.

TISSUE ABLATION AND MONITORING THEREOF

An ablation catheter including an elongate shaft, an inflatable balloon positioned at a distal region of the elongate shaft, a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon, a first ultrasound transducer disposed outside of the inflatable balloon, and a flexible circuit. The flexible circuit includes a first conductor and a second conductor and is disposed outside of and carried by the outer surface of the inflatable balloon. The first conductor is in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer. 1. An ablation catheter , comprising:an elongate shaft;an inflatable balloon positioned at a distal region of the elongate shaft;a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon;a first ultrasound transducer disposed outside of the inflatable balloon; anda flexible circuit, including a first conductor and a second conductor, disposed outside of and carried by the outer surface of the inflatable balloon, the first conductor in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer.2. The ablation catheter of claim 1 , wherein the first ultrasound transducer is positioned within a periphery of the first ablation electrode.3. The ablation catheter of claim 1 , wherein the first ultrasound transducer is disposed under the first ablation electrode.4. The ablation catheter of claim 1 , wherein the first ultrasound transducer is an ultrasound receiver.5. The ablation catheter of claim 1 , wherein the first ultrasound transducer is an ultrasound emitter.6. The ablation catheter of claim 1 , wherein the first ultrasound transducer is at least partially surrounded by an insulation layer.6. The ablation catheter of claim 1 , further comprising:a second ultrasound transducer ...

Guidewires and thin film catheter-sheaths and method of making same

Guidewires and thin-film catheter-sheaths, fabricated using vacuum deposition techniques, which are monolayer or plural-layer members having ultra-thin wall thicknesses to provide very-low profile delivery assemblies for introduction and delivery of endoluminal devices.

METHODS AND SYSTEMS FOR TREATMENT OF ACUTE ISCHEMIC STROKE

Methods and devices are disclosed that enable safe, rapid and relatively short and straight access to the cerebral arteries for the introduction of interventional devices to treat acute ischemic stroke. In addition, the disclosed methods and devices provide means to securely close the access site to the cerebral arteries to avoid the potentially devastating consequences of a transcervical hematoma. 197-. (canceled)98. A method for treating stroke , comprising:forming a penetration in a wall of a common carotid artery or internal carotid artery;applying a closure device with sutures upon commencement of the procedure at a site of the penetration and before placement of any structure through the penetration;positioning an arterial access sheath having an occlusion element through the penetration such that the occlusion element is positioned within the internal carotid artery;occluding the internal carotid artery;establishing retrograde blood flow through the internal carotid artery distal of the occluding element;inserting a distal catheter having an aspiration lumen into the intracranial artery through the access sheath, the distal catheter further having a distal-most end that defines an opening into the aspiration lumen;treating a thrombotic blockage in the intracranial artery by positioning the distal-most end of the distal catheter so that the distal-most end is located immediately adjacent the thrombotic blockage in the intracranial artery;aspirating material from the thrombotic blockage in the intracranial artery into the opening at the distal-most end of the distal catheter such that the aspiration causes the material from the thrombotic blockage to flow into the opening at the distal-most end of the distal catheter;removing the arterial access sheath from the penetration; andclosing the access site with the sutures of the closure device.99. A method as in claim 98 , wherein establishing retrograde blood flow through the internal carotid artery comprises ...

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 ...

Catheter Placement Device

A deep vein intravenous introducer has a wheel located toward the front end of the device that can be rotated by the index finger of the user. After placement of the needle in the lumen of the vessel, the user rotates the wheel, which turns a drive wheel. The drive wheel has an outer surface that advances the guide wire through the center of the needle and into the patient. Once the guide wire is advanced into the vessel lumen the catheter can be advanced over the guide wire with a hub or finger tab on the catheter close to the index finger. The operation can be performed by one hand without moving the hand from its initial position. 1. A wire introduction device for introducing a guide wire into a body of a patient , the device comprising:a housing body;a guide wheel rotatably coupled with said housing body; anda drive wheel rotatably coupled with said housing and rotatably engaged with said guide wheel, said drive wheel coupled with the guide wire and configured to advance the guide wire into the patient body upon rotation of said guide wheel.2. The wire introduction device of claim 1 , wherein said guide wheel has teeth and said drive wheel has teeth claim 1 , wherein the guide wheel teeth are engaged with the drive wheel teeth.3. The wire introduction device of claim 1 , one or more guides positioned inside the housing body to guide and support the guide wire.4. The wire introduction device of claim 1 , further comprising a rear opening located at a rear end of said housing claim 1 , wherein said guide wire extends through the rear opening.5. The wire introduction device of claim 4 , further comprising a sheath positioned about the guide wire at the rear opening of said housing.6. The wire introduction device of claim 1 , further comprising an opening at a front end of said housing body claim 1 , wherein the guide wire extends through the opening.7. The wire introduction device of claim 1 , said housing having a front end portion projecting forward from housing ...

MODIFIED FIXED FLAT WIRE BIFURCATED CATHETER AND ITS APPLICATION IN LOWER EXTREMITY INTERVENTIONS

A bifurcated catheter and methods of use are disclosed herein. The bifurcated catheter can include a fixed flat wire that is configurable as a stabilization wire. The bifurcated catheter can be configured to improve the initial access and directability by application of a pull force to the stabilization wire, in addition to a push force from the proximal end of the bifurcated catheter. The stabilization wire is anchored once the bifurcated catheter is positioned. The anchored, bifurcated catheter provides stability and pushability to assist the procedural catheter in traversing the tortuous peripheral vasculature. 1. A system comprising:a bifurcated catheter for enabling access for a procedural catheter to a site in a vasculature, the bifurcated catheter comprising a proximal end and a distal end, and a side hole near the distal end of the bifurcated catheter; anda stabilization wire attached to the bifurcated catheter, wherein the stabilization wire is configured to emerge from the side hole.2. The system of claim 1 , wherein the bifurcation is 2 cm from the distal end of the bifurcated catheter.3. The system of claim 1 , wherein the stabilization wire is configured to emerge from the side hole and extend for at least 10 cm beyond the bifurcation.4. The system of claim 1 , wherein the bifurcated catheter further comprises a procedural lumen and a stabilization lumen5. The system of claim 4 , wherein the stabilization wire is configured to emerge from the stabilization lumen at the side hole.6. The system of claim 4 , wherein the procedural lumen is larger than the stabilization lumen.7. The system of claim 1 , wherein the bifurcated catheter is configured for arterial access via a percutaneous contralateral arterial access.8. The system of claim 1 , wherein the bifurcated catheter comprises a procedural lumen claim 1 , and wherein the stabilization wire is configured to emerge from the procedural lumen at the side hole.9. The system of claim 1 , further comprising ...

TELESCOPING CATHETER

A telescoping catheter including an elongated tubular member having a proximal end, a distal end, and a passageway extending between the proximal end and the distal end. The tubular member includes a first tubular segment and a second tubular segment. The first tubular segment and the second tubular segment are slidable relative to one another to vary a length of the tubular member. The first tubular segment includes a first connector mateable with a second connector of the second tubular segment to selectively maintain the first and second tubular segments in an extended position. The second tubular segment includes a second proximal end that is mateable with a handle. 1. A catheter system , comprising:an outer catheter member having a proximal end, a distal end, and a passageway extending between the proximal end and the distal end, the outer catheter member comprising a first tubular segment telescopingly received within a second tubular segment, the first tubular segment having a first proximal end, the outer catheter member further including a first connector disposed around an exterior surface of the first proximal end, and the second tubular segment having a second distal end, the outer catheter member including a second connector at the second distal end, wherein the first connector is mateable with and positioned within the second connector to maintain the first and second tubular segments in an extended position;an inner catheter slidably received within the outer catheter member and passed through the distal and proximal ends of the outer catheter member so as to extend distally out of the outer catheter member, the inner catheter being configured to support a prosthetic valve at a location distal with respect to the outer catheter member;a stop located on the inner catheter, outside of and distal to a distal-most end of the outer catheter member, wherein the stop limits axial movement of the inner catheter with respect to the outer catheter member; anda ...

CATHETER ASSEMBLY WITH SEGMENTED STABILIZATION SYSTEM

A catheter assembly with segmented or step-wise deployment stabilization system includes a base or handle, puncture needle extending from the handle, and a deployment mechanism or mechanisms to selectively extend from the distal end of the needle for first length a hollow stabilizing component and as a second step to a second further length a stabilizing guide wire element. The needle will gain sub-dermal access to the patient to the intended position for deployment of a catheter. Hollow stabilizing component provides for a first additional guide and support for a catheter sheath from the distal end of the needle. The stabilizing wire element provides additional length, guide and support for the catheter sheath. The hollow stabilizing component has some degree of flexibility as does the guide wire to minimize chance of damage to surrounding tissue. The user can feel resistance and have the opportunity to retract either component and attempt redeployment without a retraction of the puncture needle and a second poke of the patient's skin. In the example for peripheral venous catheterization, the system reduces the probability of blood vessel puncture. The deployment mechanism can have a guiding system which ensures the proper sequence of deployment. 1. An apparatus designed for facilitating subcutaneous insertion of a catheter comprising:a. a hollow needle assembly comprising a hollow needle having a longitudinal axis and a distal end;b. a hollow stabilizing component assembly comprising a hollow stabilizing component having a longitudinal axis and a distal end, the hollow stabilizing component coaxial to and selectively movable between a retracted position along the longitudinal axis of the needle to a deployed position extended past the distal end of the needle;c. so that the needle can be used for subcutaneous access and the hollow stabilizing component can provide a first support and guide section extendible from the needle.2. The apparatus of further comprising ...

Introducer Sheath

A medical device may include an introducer sheath, having a distal and a proximal end and a lumen extending from the distal end to the proximal end. The introducer sheath may also include a tab formed at the distal end and extending distal to the lumen, and a frangible portion extending between the distal end and the proximal end. 1. An introducer sheath , comprising:a distal and a proximal end;a lumen extending from the distal end to the proximal end;a tab formed at the distal end and extending distal to the lumen; anda frangible portion extending between the distal end and the proximal end.2. The introducer sheath according to claim 1 , wherein the lumen extends to a proximal end face of the proximal end.3. The introducer sheath according to claim 1 , wherein the frangible portion includes a slit claim 1 , a perforation claim 1 , a reduced thickness claim 1 , or a gap in the introducer sheath.4. The introducer sheath according to claim 1 , wherein the frangible portion extends in a straight line between the distal end and the proximal end.5. The introducer sheath according to claim 1 , wherein the frangible portion is located circumferentially opposite the tab.6. The introducer sheath according to claim 1 , further including at least one opening.7. The introducer sheath according to claim 6 , wherein one of the at least one openings is in the proximal end.8. The introducer sheath according to claim 7 , wherein the frangible portion extends through the at least one opening that is in the proximal end.9. The introducer sheath according to claim 8 , wherein the frangible portion extends to a proximal end face of the proximal end.10. The introducer sheath according to claim 1 , wherein the tab is an integral portion of the introducer sheath.11. The introducer sheath according to claim 1 , wherein the tab is formed of a separate member from a body of the introducer sheath.12. The introducer sheath according to claim 1 , wherein a valve is coupled to the proximal end.13 ...

METHODS AND SYSTEMS FOR TREATMENT OF ACUTE ISCHEMIC STROKE

Described are methods for performing a medical procedure at a treatment site in a cerebral vessel of a patient. The methods include positioning a system of devices into an advancement configuration, the system including a catheter and an inner member sized and shaped to slide within the catheter lumen. The inner member defines a single lumen and has a distal portion, the distal portion having a first outer diameter that tapers distally to a second outer diameter that is smaller than the first outer diameter. When positioned in the advancement configuration, the inner member extends coaxially through the catheter lumen and the distal portion of the inner member is positioned distal to the distal end of the catheter. The method further includes advancing the system of devices distal to a petrous portion of an internal carotid artery while the system of devices is positioned in the advancement configuration. 135.-. (canceled)36. A method of performing a medical procedure at a treatment site in a cerebral vessel of a patient , the method comprising: a catheter having a catheter lumen, an inner diameter and a distal end; and', 'an inner member sized and shaped to slide within the catheter lumen, wherein the inner member defines a single lumen and has a distal portion, the distal portion having a first outer diameter that tapers distally to a second outer diameter that is smaller than the first outer diameter,, 'positioning a system of devices into an advancement configuration, the system of devices comprisingwherein, when positioned in the advancement configuration, the inner member extends coaxially through the catheter lumen and the distal portion of the inner member is positioned distal to the distal end of the catheter; andadvancing the system of devices distal to a petrous portion of an internal carotid artery while the system of devices is positioned in the advancement configuration.37. The method of claim 36 , further comprising removing the inner member from the ...

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 ...

Advanced sheath patterns

Disclosed herein are reinforced expandable introducer sheaths and methods of using the same. The sheaths minimize trauma to the patient's vasculature by including a reinforcing member to improve the push force of the sheath while reducing the chances of kinking during delivery of a prosthetic device. The sheath can include a plurality of expandable rings aligned along the longitudinal axis of the sheath and coupled together to form an elongated tubular structure. The sheath can also include a plurality of radial members circumferentially arranged to form a tubular support structure. The radial members slidingly interconnected around the circumference of the tubular structure to facilitate radial expansion of the sheath.

RAPID ASPIRATION THROMBECTOMY SYSTEM AND METHOD

An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter having a flexible, distal luminal portion having an inner diameter defining a lumen extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator having a flexible, distal dilator portion sized to be received within the lumen of the luminal portion. Associated systems, devices, and methods of use are also described. 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 of a plurality of regions, wherein at least two of the plurality of regions of the flexible elongate body are comprised of unreinforced polymer;a first marker disposed at the distal end 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 three regions.4. The catheter of claim 3 , wherein the three regions comprise claim 3 , a proximal region claim 3 , an intermediate region claim 3 , and a tip region.5. The catheter of claim 4 , wherein a portion of the tip region of the flexible elongate body is shapeable by a user.6. The catheter of claim 4 , ...

RAPID ASPIRATION THROMBECTOMY SYSTEM AND METHOD

An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter having a flexible, distal luminal portion having an inner diameter defining a lumen extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator having a flexible, distal dilator portion sized to be received within the lumen of the luminal portion. Associated systems, devices, and methods of use are also described. 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, wherein the flexible elongate body comprises a plurality of regions, wherein one of the plurality of regions is a tapered region;a first marker disposed at a distal end of the tapered region;a second marker disposed at a proximal end of the tapered region, wherein the tapered region comprises an unreinforced polymer; 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.2. The access catheter of claim 1 , wherein the proximal extension is formed of two or more different materials.3. The access catheter of claim 2 , wherein one of the two or more different materials of the proximal extension is metal.4. The access catheter of claim 3 , wherein a second material of the two or more different materials of the proximal extension is polymer.5. The access catheter of claim 2 , wherein the two or more materials are arranged coaxially.6. The access catheter of claim 5 , ...

LOCKING MECHANISM FOR A MEDICAL DEVICE

A locking mechanism for a medical device to selective lock a first elongate member from longitudinal movement relative to a second elongate member of the medical device. The locking mechanism includes a flexible tubular member disposed in a bore of a handle assembly of the medical device, and an actuator, such as a cam member having a cam or eccentric surface. Pivotable movement of the actuator from a first position to a second position compresses or deforms the flexible tubular member against the first elongate member to lock the first elongate member from longitudinal movement relative to the handle assembly. 120-. (canceled)22. The medical catheter assembly of comprising a first coefficient of friction between a surface of the flexible member and an outer surface of the elongate member when the actuator is in the first position claim 21 , and a second coefficient of friction between a surface of the flexible member and the outer surface of the elongate member when the actuator is in the second position claim 21 , the second coefficient of friction being greater than the first coefficient of friction.23. The medical catheter assembly of wherein the elongate member extends along a longitudinal axis claim 21 , the actuator is pivotably attached to the housing about a pivot axis claim 21 , the actuator includes an eccentric surface having a variable distance from the pivot axis and wherein the eccentric surface of the actuator is located a first distance from the longitudinal axis when the actuator is in the first position and a second distance from the longitudinal axis when the actuator in in the second position claim 21 , wherein the second distance is less than the first distance.24. The medical catheter assembly of wherein the flexible member is forced against the elongate member in response to a force exerted by the eccentric surface of the actuator against the flexible member when the actuator is in the second position.25. The medical catheter assembly of ...

AIR REMOVAL MECHANISM AND INTRODUCER SHEATH

An air removal mechanism includes a body having a hollow portion capable of storing a liquid. In a state where the body is mounted on an introducer sheath, a medical device to be inserted into the introducer sheath is insertable via the hollow portion. The body has an injection path which communicates with the hollow portion and on which an outlet is open toward a valve body. 1. An air removal mechanism configured to be attachable to and detachable from a proximal portion of an introducer sheath having a valve body disposed inside the proximal portion of the sheath , the air removal mechanism comprising:a body mountable on the proximal portion of the introducer sheath, the body including a hollow portion configured to store a liquid and an open proximal end that communicates with the hollow portion;the open proximal end of the body being configured to receive a medical device when the body is mounted on the proximal portion of the introducer sheath so that the medical device is insertable into the introducer sheath via the hollow portion; andthe body including an injection path communicating with the hollow portion and terminating at an outlet which faces toward the valve body.2. The air removal mechanism according to claim 1 , wherein the body possesses a central axis claim 1 , and the injection path includes an end portion closest to the outlet that is inclined with respect to the central axis of the body.3. The air removal mechanism according to claim 1 , wherein the injection path includes an end portion closest to the outlet claim 1 , the end portion of the injection path possessing a central axis that intersects the valve body at a position spaced from a center of the valve body when the body is mounted on the proximal portion of the introducer sheath.4. The air removal mechanism according to claim 3 , wherein the outlet of the injection path is positioned so that the liquid reaches the valve body in a tangential direction of the valve body when viewed in an ...

Guidewires and thin film catheter-sheaths and method of makng same

Guidewires and thin-film catheter-sheaths, fabricated using vacuum deposition techniques, which are monolayer or plural-layer members having ultra-thin wall thicknesses to provide very-low profile delivery assemblies for introduction and delivery of endoluminal devices.

Continuous Transversus Abdominis Plane Block

A procedure and kit are provided for performing an ultrasound-guided transversus abdominis plane (TAP) procedure. The patient's abdomen is scanned with an ultrasound probe to identify and mark the external oblique, internal oblique, and TAP. An introducer sheath is placed over a fluid delivery needle such that the distal end of the needle extends beyond the distal end of the sheath, the needle having echogenic properties for ultrasound imaging. The needle and sheath are ultrasonically guided into the TAP. A local anesthetic or saline/anesthetic combination is injected through the needle to create a liquid pool in the TAP. The needle is removed from the sheath while maintaining the sheath within the TAP and a catheter is subsequently advanced through the sheath and into the pooled liquid in the TAP. The sheath is withdrawn while maintaining the catheter located within the TAP. A catheter is connected to a source of local anesthetic for providing a defined volume of anesthetic to the catheter site at a controlled delivery rate. 1. A medical procedure kit for performing an ultrasound-guided transversus abdominis plane (TAP) procedure , said kit comprising: ["a fluid delivery needle having a length and gauge for penetration into a patient's TAP;", 'an extension set having a distal end that mates with said fluid delivery needle;', 'a sheath having a size and length such that said needle slides into said sheath and extends distally beyond a distal end of said sheath; and', 'a TAP catheter having a size and length so as to slide through said sheath, said TAP catheter comprising a reservoir having a defined fill volume and flow rate for delivery of a local anesthetic through said catheter., 'a container, said container further comprising2. The medical procedure kit as in claim 1 , further comprising a local anesthesia and at least one syringe that mates with a proximal end of said extension set to delivery said local anesthesia through said needle.3. The medical procedure ...

ADVANCED CURRENT LOCATION (ACL) AUTOMATIC MAP ROTATION TO DE-TECT HOLES IN CURRENT POSITION MAP (CPM) MAPPING

Catheterization is carried out by inserting a probe having a location sensor into a body cavity, and in response to multiple location measurements identifying respective mapped regions of the body cavity. Using the location measurements, a simulated 3-dimensional surface of the body cavity is constructed. One or more unmapped regions are delineated by rotating the simulated 3-dimensional surface about an axis. The simulated 3-dimensional surface of the body cavity is configured to indicate locations of the unmapped regions based on the location measurements. 1. A method , comprising the steps of:inserting a probe having a location sensor into a body cavity;mapping multiple positions within respective regions of the body cavity, in response to multiple location measurements received from the location sensor, so as to generate respective mapped regions of the body cavity;constructing, using the location measurements, a simulated 3-dimensional surface of the body cavity;delineating, by rotating the simulated 3-dimensional surface about an axis, one or more unmapped regions of the simulated 3-dimensional surface; andconfiguring the simulated 3-dimensional surface of the body cavity to indicate locations of the unmapped regions based on the location measurements.2. The method according to claim 1 , wherein the step of delineating comprises:constructing simulated rays directed toward the simulated 3-dimensional surface; andidentifying spatial regions wherein the rays fail to intersect the simulated 3-dimensional surface.3. The method according to claim 2 , wherein identifying spatial regions is performed by graphically representing the rays that fail to intersect the simulated 3-dimensional surface on a 2-dimensional projection thereof.4. The method according to claim 2 , wherein configuring the simulated 3-dimensional surface comprises varying an angle of rotation of the simulated 3-dimensional surface relative to a direction of the rays.5. The method according to claim ...

METHOD FOR FACILITATING INTRANASAL GUIDANCE

A method for visualization and/or administration of medication of and into the sphenopalatine/pterygopalatine recess of a patient is provided. The method includes providing a sphenocath and inserting a guidewire into the nostril of a patient to a target area proximate the sphenopalatine/pterygopalatine recess of the patient. The sphenocath is advanced over the guidewire and a catheter hub of the sphenocath is rotated relative to a sheath hub to conform to an anatomy of the patient's sphenopalatine/pterygopalatine recess, such that the distal end of the catheter tube is proximal to the target area. The sphenocath is then advanced relative to a sheath assembly so that the distal end of a sphenocath catheter tube extends from a sphenocath sheath tube distal end and bends along the guidewire. The guidewire is removed and contrast media, fluids, and/or medication is administered to the patient's sphenopalatine/pterygopalatine ganglion disposed within the sphenopalatine recess of the patient. 2. The method of claim 1 , wherein the sheath tube distal end includes a radiopaque mark and the step of advancing the sphenocath over the guidewire includes the use of x-ray or fluoroscopy.3. The method of claim 1 , wherein the sheath tube includes a series of distance markings and the step of advancing the sphenocath over the guidewire includes advancement based on the distance markings.4. The method of wherein the distal end of the catheter tube includes a spraying tip and administering the contrast media claim 1 , fluids claim 1 , and/or medication to the patient's sphenopalatine/pterygopalatine ganglion is done through the spraying tip.5. The method of wherein said spraying tip includes a slotted passage or a plurality of small opening at a substantially closed end thereof. This application is a continuation of U.S. patent application Ser. No. 15/412,377, filed on Jan. 23, 2017; which is a divisional of U.S. patent application Ser. No. 14/548,860, filed on Nov. 20, 2014; which ...

Catheter-based system for delivery and retrieval of a leadless pacemaker

Catheter-based delivery systems for delivery and retrieval of a leadless pacemaker include features to facilitate improved manipulation of the catheter and improved capture and docking functionality of leadless pacemakers. Such functionality includes mechanisms directed to deflecting and locking a deflectable catheter, maintaining tension on a retrieval feature, protection from anti-rotation, and improved docking cap and drive gear assemblies.

CATHETER SYSTEM WITH EXTENDABLE EXTENSION TUBE

A catheter system may include a catheter adapter having a distal end, a proximal end, and a lumen extending therebetween. The system may include a catheter tube extending distally from the catheter adapter. The system may include an extension tube coupled to the proximal end of the catheter adapter. The extension tube may be extendable. The system may include a locking mechanism coupled to the extension tube and removably coupled to the proximal end of the catheter adapter. The system may include a needle hub removably coupled to a proximal end of the extension tube and an introducer needle extending through the catheter tube. A proximal end of the introducer needle may be secured within the needle hub. 1. A catheter system , comprising:a catheter adapter having a distal end, a proximal end, and a lumen extending therebetween;a catheter tube extending distally from the catheter adapter;an extension tube coupled to the proximal end of the catheter adapter, wherein the extension tube is extendable;a locking mechanism coupled to the extension tube and removably coupled to the proximal end of the catheter adapter;a needle hub removably coupled to the proximal end of the catheter adapter; andan introducer needle extending through the catheter tube, wherein a proximal end of the introducer needle is secured within the needle hub.2. The catheter system of claim 1 , wherein the extension tube is corrugated claim 1 , such that the extension tube is flexible when extended.3. The catheter system of claim 1 , wherein the extension tube is resilient and retains shape when curved.4. The catheter system of claim 1 , wherein the locking mechanism comprises a lever having a lip disposed on a distal end of the locking mechanism that engages with a flange disposed on the catheter adapter claim 1 , wherein in response to a depression of a proximal end of the lever claim 1 , the lip disengages from the flange of the catheter adapter.5. The catheter system of claim 4 , wherein the ...

INTRODUCER WITH SHEATH HAVING A WITHDRAWAL SUPPORT WIRE

An introducer includes a dilator received in a lumen defined by an introducer sheath and including a dilation end extending distally beyond a distal end of the introducer sheath. The introducer sheath includes a flat wire reinforcement having a hollow cylindrical shape sandwiched between an inner PTFE tube and an outer nylon tube. The outer nylon tube includes a distal segment that extends distally beyond the PTFE tube, which extends distally beyond the PTFE tube, which extends distally beyond the flat wire reinforcement. A withdrawal support wire has a distal end attached to a distal end turn of the flat wire reinforcement and extends in a proximal direction in parallel with a longitudinal axis between an outer surface of the nylon tube and an inner surface of the PTFE tube. The withdrawal support wire is configured to be in tension when the sheath is placed in tension to inhibit distal stretch separation breakage. 1. An introducer comprising:a introducer sheath and a dilator that have a first configuration and a second configuration;the dilator has a dilation end extending distally beyond a distal end of the introducer sheath and the dilator being positioned in a lumen defined by the introducer sheath, and the dilator extending proximally through a valve at a proximal end of the introducer sheath in the first configuration;the dilator being out of contact with the introducer sheath in the second configuration;the introducer sheath includes a flat wire reinforcement having a hollow cylindrical shape sandwiched between an inner PTFE tube and an outer nylon tube;the outer nylon tube including a distal segment that extends distally beyond the PTFE tube, which extends distally beyond the flat wire reinforcement;a withdrawal support wire with a distal end attached to a distal end turn of the flat wire reinforcement and extending in a proximal direction in parallel with a longitudinal axis between an outer surface of the nylon tube and an inner surface of the PTFE tube; ...

EXPANDABLE INTRODUCER SHEATH FOR MEDICAL DEVICE

An introducer sheath for the insertion of a medical device into a blood vessel having an expandable sheath. The sheath has a length, a thickness, and proximal and distal ends. The expandable sheath has a frame extending longitudinally between the proximal and the distal ends, and having an exterior surface and an interior surface that forms an interior lumen along the length of the frame. The frame is configured to achieve an expanded state and a contracted state, the expanded state forming an expanded cross-section in the lumen for passing a medical device therethrough. The frame has a smooth coating about the exterior surface and protrusions extending into the lumen along the interior surface. The introducer sheath can be introduced into a patient in the contracted state, with the distal end of the introducer sheath prevented from moving in the proximal direction by an abutment against a dilator end surface. 1. A sheath assembly for the insertion of a medical device into a blood vessel , the sheath assembly comprising: an expandable sheath body having a first length, a longitudinal axis, and proximal and distal ends, the expandable sheath body comprising:', 'a first lumen extending between the proximal and distal ends of the expandable sheath body, the first lumen having a first diameter in a first elongated state and a second diameter in a second relaxed state, wherein the second diameter in the second relaxed state is sized to accommodate the medical device;', 'a braid forming the first lumen, the braid formed of at least one strand of a first material extending from the proximal end of the expandable sheath body at an acute angle relative to the longitudinal axis of the expandable sheath body; and', 'a polymer encapsulating at least a distal portion of the braid, wherein the polymer can expand or collapse along with the braid, the acute angle and the first material selected to allow the medical device to pass through the expandable sheath body without the ...

Medical device for placing a catheter

The disclosure relates to a medical device for placing a catheter in an umbilical cord blood vessel of a newborn, wherein the medical device comprises a longitudinal axis, a proximal and a distal end, the medical device being designed as a sheath to enclose a portion of an umbilical cord. The medical device comprises a first unit comprising a clamping device for clamping the umbilical cord, and/or a second unit, comprising a severing device for severing the umbilical cord to form an umbilical cut surface, and a third unit comprising a hooking device for spreading the umbilical cut surface.

METHOD FOR MAKING A READY-TO-USE CATHETER ASSEMBLY AND READY-TO-USE-CATHETER ASSEMBLY

A method of making a ready-to-use catheter assembly and a ready-to-use catheter are provided, which avoids any degradation of the catheter during sterilization. The method comprises: placing a catheter with a hydrophilic coating and a wetting fluid in a catheter package made of low moisture transmission material while the package is in a first condition wherein an insertable length of the hydrophilic coating of the catheter is not in contact with the wetting fluid, sterilizing the catheter package with the catheter and the wetting fluid by radiation sterilization while the catheter package is kept in a condition in which the insertable length is not in contact with the wetting fluid, transferring the catheter package with the catheter and the wetting fluid into a second condition, bringing the wetting fluid into contact with at least the insertable length and activating the insertable length via gravity and/or via inertia. 1. A method of making a ready-to-use catheter assembly , comprising:placing a catheter with a hydrophilic coating and a wetting fluid in a catheter package made of a material with low moisture transmission while the catheter package is in a first condition wherein at least an insertable length of the hydrophilic coating of the catheter is not in contact with the wetting fluid,sterilizing the catheter package with the catheter and the wetting fluid by radiation sterilization while the catheter package is kept in a condition in which at least said insertable length of the hydrophilic coating of the catheter is not in contact with the wetting fluid,transferring the catheter package with the catheter and the wetting fluid into a second condition, thereby bringing the wetting fluid into contact with at least the insertable length of the hydrophilic coating of the catheter and activating at least the insertable length of the hydrophilic coating of the catheter via gravity and/or inertia,wherein the catheter and the wetting fluid are arranged in the ...

EXPANDABLE SHEATH ASSEMBLY AND METHOD OF USING SAME

An expandable sheath assembly includes a support body extending from a proximal end to a distal end. A guide rod is interconnected to the support body and extends between the ends along an axis. A dilator extends from the guide rod for insertion into a body vessel, and a hub is releasable connected to the distal end of the support body. A distal sheath overlays the dilator, and a hemostatic valve is slidably disposed along the axis. A proximal sheath extends from the hemostatic valve and is disposed in surrounding and coaxial relationship with the guide rod. The proximal sheath is concurrently slidable with the hemostatic valve along axis to advance the proximal sheath through the hub and interleave the proximal sheath between the dilator and the distal sheath for lifting the distal sheath from the dilator and effectuating an expansion of the body vessel. 1. A method of inserting an expandable sheath assembly into a body vessel of a patient comprising:inserting a dilator overlaid with a distal sheath comprised of a low friction polymeric material into a body vessel of a patient;releasing a hemostatic valve from a proximal end of a support body, the hemostatic valve including a proximal sheath extending therefrom and disposed in surrounding and coaxial relationship with a guide rod along an axis A; andsliding the hemostatic valve along the guide rod to advance the proximal sheath through a hub attached to a distal end of the support body and interleave the proximal sheath between the dilator and the distal sheath for lifting the distal sheath from the dilator and effectuating an expansion of the body vessel to allow the proximal sheath to be advanced into the body vessel.2. A method of inserting an expandable sheath assembly into a body vessel as set forth in further comprising:sliding the hemostatic valve along the guide rod to dispose the hemostatic valve and the hub in abutting relationship with one another and to axially advance the proximal sheath past a second ...

SYSTEM FOR FACILITATING INTRANASAL GUIDANCE

A sphenocath including a sheath assembly including a sheath hub with a sheath tube extending therefrom with a passage extending from a proximal end of the sheath hub to a distal end of the sheath tube; a catheter assembly including a catheter hub with a catheter tube extending therefrom with a passage extending from a proximal end of the catheter hub to a distal end of the catheter tube; wherein the catheter assembly passes through the sheath assembly with a portion of the catheter hub engaging a portion of the sheath hub to limit relative rotation between the hubs while permitting relative axial movement such that in an initial non-extended position the distal end of the catheter tube is proximate to the distal end of the sheath tube. A system further including a guidewire is also provided. 1. A sphenocath comprising:a sheath assembly including a sheath hub with a sheath tube extending therefrom with a lumen extending from a proximal end of the sheath hub to a distal end of the sheath tube, said sheath hub including a guide slot extending along a top surface thereof, said guide slot including an indicator member thereon;a catheter assembly including a catheter hub with a catheter tube having a pre-formed curvature extending therefrom, the catheter tube having a lumen therewithin, said catheter hub including a radially extending projection thereon; andwherein the catheter assembly is configured to be inserted into the sheath assembly such that the radially extending projection on the catheter hub engages the guide slot to limit relative rotation between the hubs while permitting relative axial movement, said guide slot having a width larger than a width of the projection such that the catheter hub is configured to rotate relative to the sheath hub over a rotational range of approximately 10 degrees in each rotational direction such that the preformed curvature is always positioned away from the indicator member and a distal end of the catheter tube cannot be ...

Electrosurgical system

A system and method involving an electrode system can include a flexible shaft.

Tubular Structures with Variable Support

A lumenal element configured to transit a body lumen comprising a lumenal member () and an outer member () disposed over at least part of the lumenal member with a structural support (), e.g. a mesh or stent, having a facing surface facing a surface of the lumenal member and wherein the facing surface includes at least one non-smooth surface portion, discontinuity, or non-uniformity, wherein the structural support is between the lumenal member and the outer member wherein the outermember is at least partly sealed to adjacent surfaces of the lumenal member sufficient to withstand fluid pressure within a space about the structural support, wherein the lumenal member has a first flexibility in the area of the structural support, and increasing the flexibility of the area of the structural support by moving at least a part of the outer member out of contact with the structural support. The flexibility of a lumenal element can be changed. Also disclosed a method of assembly of the lumenal element. 1. A flexible lumenal assembly configured for transiting a body lumen comprising a flexible lumenal member extending longitudinally and a medial member having a structural support member having a plurality of limbs , at least one limb of which extends other than longitudinally and that has a facing surface facing at least one surface on either of the flexible lumenal member or an outer element , wherein the facing surface has a non-smooth surface geometry including at least one raised portion raised from the facing surface , and wherein the medial member extends outside a portion of the flexible lumenal member and inside an outer member extending over the medial member wherein the outer member is configured to selectively apply pressure to the medial member.2. The assembly of wherein the outer member is configured to releasably compress the structural support member.3. The assembly of wherein the structural support member is a tubular structural support member.4. The assembly ...

METHODS AND SYSTEMS FOR TREATMENT OF ACUTE ISCHEMIC STROKE

A system of devices for treating an artery includes an arterial access sheath adapted to introduce an interventional catheter into an artery and an elongated dilator positionable within the internal lumen of the sheath body. The system also includes a catheter formed of an elongated catheter body sized and shaped to be introduced via a carotid artery access site into a common carotid artery through the internal lumen of the arterial access sheath. The catheter has an overall length and a distal most section length such that the distal most section can be positioned in an intracranial artery and at least a portion of the proximal most section is positioned in the common carotid artery during use. 1. A catheter system comprising:an access sheath comprising a tubular sheath body with a central lumen having an inner diameter, a proximal end and a distal opening,and a connector operably connected with the sheath body and attachable to a fluid source or aspiration source via the connector; anda catheter comprising a distal portion and a proximal tether extending proximally from a point of attachment between the proximal tether and the distal portion, wherein the distal portion has a single inner lumen, and wherein the catheter is configured to extend from a femoral access site to a carotid artery,wherein the catheter is configured to slide within the central lumen of the sheath body to change the relative position of the catheter within the central lumen and provide for at least a portion of the distal portion to extend outward from the distal opening of the sheath body such that an overlap region is formed between the catheter and the access sheath,wherein a fluid lumen is collectively formed by the single inner lumen of the catheter and the central lumen of the access sheath, andwherein a proximal end region of the catheter comprises an inclined surface flaring outward in a proximal direction, wherein the inclined surface is formed in a thickened portion of the catheter ...