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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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22-08-2013 дата публикации

Guidewire with internal pressure sensor

Номер: US20130218032A1
Автор: Claude Belleville
Принадлежит: Opsens Inc

The present document describes a pressure guidewire comprising: a shaft tube with a proximal section; a middle section extending from the proximal section of the shaft tube, the middle section having greater flexibility than the proximal section; an inner hypotube installed substantially within the middle section for optimal mechanical properties; a pressure sensor with a communication means routed through the middle section and the proximal section; and a sensor housing for receiving the pressure sensor. There are also described methods for joining the inner hypotube to the shaft tube.

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Номер записи: 1
31-10-2013 дата публикации

Rod shaped body and medical device

Номер: US20130289533A1
Автор: Joachim Georg Pfeffer, Klaus Duering
Принадлежит: MaRVis Tech GmbH

The present invention relates to a medical device. In particular, the present invention concerns a medical device which can be detected by means of magnetic resonance imaging (MRI).

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Номер записи: 2
01-01-2015 дата публикации

Twisted ribbon wire guidewire coil

Номер: US20150000100A1
Автор: Daniel G. Brown
Принадлежит: Abbott Cardiovascular Systems Inc

A medical guidewire having distal tip coil that includes a twisted ribbon wire construction. The distal tip coil is mounted to the distal end of the distal core section of the guidewire. The coil is made from a flat ribbon wire with a polygonal, preferably rectangular, cross-section that is twisted along the length of the wire. The twisted, flat ribbon wire creates a tip coil that has a roughened, undulating surface at the outer circumference that, whether coated or bare, is perceptible to the physician or cardiologist when pushing or torquing the guidewire in an interventional procedure.

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Номер записи: 3
01-01-2015 дата публикации

X-RAY MARKER GUIDED AUTOMATED GUIDE WIRE OR WORKING CATHETER ADVANCEMENT

Номер: US20150005620A1
Автор: Bergman Per, Blacker Steven, Elden Robert, Jennings Jerry, Kottenstette Nicholas, Schott Jean-Pierre
Принадлежит: Corindus, Inc.

Disclosed is the automated rapid advancement of a guide wire through a guide catheter using x-ray markers. The procedure involves providing a guide wire with a marker at or adjacent its tip, providing a guide catheter with a marker at or adjacent its distal terminus, rapidly advancing the guide wire through the guide catheter from its proximal end to its distal end under the control of an automated apparatus, and terminating the automated rapid advancement when the guide wire tip marker becomes adjacent to the guide catheter distal end marker. Fluoroscopic images may be taken of the of the guide wire as it rapidly advances through the guide catheter and image processing software used to determine when to terminate the rapid advancement. This software may use either the position or the velocity of the guide wire to make this determination. 1. A process for automatically advancing a guide wire through a guide catheter comprising:providing a guide wire with a marker at or adjacent its tip;providing a guide catheter with a marker at or adjacent its distal terminus;rapidly advancing the guide wire through the guide catheter from its proximal end to its distal end under the control of an automated apparatus; andterminating the automated rapid advancement when the guide wire tip marker becomes adjacent to the guide catheter distal end marker.2. The process of wherein:fluoroscopic images are taken of the of the guide wire as it rapidly advances through the guide catheter;image processing software estimates the distance between guide wire tip marker and the guide catheter distal end marker; andthe image processing software terminates the automated rapid advancement when the estimated distance becomes smaller than a preset value.3. The process of wherein:the fluoroscopic images are taken are taken intermittently such that an image is taken when the estimated distance is at the preset value.4. The process of wherein:the guide catheter is provided with multiple markers at known ...

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Номер записи: 4
01-01-2015 дата публикации

3-d mapping for guidance of device advancement out of a guide catheter

Номер: US20150005745A1
Автор: Jean-Pierre Schott, Jerry Jennings, Nicholas Kottenstette, Per Bergman, Steven Blacker
Принадлежит: Corindus Inc

The present disclosure involves a process for guiding the distal end of a guide wire or working catheter as it emerges from the distal end of a guide catheter into a blood vessel. The distal end of the guide wire or working catheter is provided with an X-ray marker, a determination is made that this distal end has emerged from the distal end of the guide catheter and a fluoroscopic image of the distal end of a guide wire or working catheter is taken. This image is correlated with the length of guide wire or working catheter inserted into the guide catheter. After further advancement of the guide wire or working catheter, another fluoroscopic image of the distal end of a guide wire or working catheter is taken and this image is correlated with the length of guide wire or working catheter which has been inserted into the guide catheter.

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Номер записи: 5
14-01-2016 дата публикации

Guidewires and Methods for Percutaneous Occlusion Crossing

Номер: US20160008584A1
Автор: Bridgeman John, Root Howard C.
Принадлежит:

Guidewires and related methods for percutaneous crossing of an occlusion in a blood vessel are disclosed. A guidewire can include a core member and a jacket member. The core member can extend from a proximal end portion to a distal end portion, with the distal end portion including a first segment, a more distal second segment and a more proximal third segment. The first segment can be configured to encourage prolapse by way of a short taper or a diameter-reduced portion. The jacket member can surround at least the distal end portion of the core member. A method can include advancing a distal end portion of the guidewire through the natural lumen of a blood vessel to a location near an occlusion. A longitudinal pushing force can be applied to a proximal end portion of the guidewire, thereby causing a first segment of the distal end portion to prolapse. 1. A guidewire , comprising:a core member extending from a proximal end portion to a distal end portion, the distal end portion including a first segment, a more distal second segment and a more proximal third segment,the first segment configured to encourage prolapse; anda jacket member surrounding at least the distal end portion of the core member.2. The guidewire of claim 1 , wherein the first segment has a length in a range of about 0.05 cm to about 1 cm claim 1 , inclusive.3. The guidewire of claim 2 , wherein the length of the first segment is in a range of about 0.05 cm to about 0.5 cm claim 2 , inclusive.4. The guidewire of claim 2 , wherein a diameter of a proximal end of the second segment is at least 40 percent less than a diameter of a distal end of the third segment claim 2 , andwherein the diameter reduction takes place within the first segment.5. The guidewire of claim 1 , wherein longitudinal stiffness of the second segment is greater than longitudinal stiffness of the first segment.6. The guidewire of claim 1 , wherein the outer surface of the first segment includes a parabolic or near-parabolic shape ...

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Номер записи: 6
14-01-2021 дата публикации

INTEGRATED COIL VASCULAR DEVICES

Номер: US20210008351A1
Автор: Davis Clark C., Lippert John A., Snyder Edward J., Turnlund Todd
Принадлежит:

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

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Номер записи: 7
18-01-2018 дата публикации

GUIDEWIRE DEVICES HAVING SHAPEABLE TIPS AND BYPASS CUTS

Номер: US20180015261A1
Автор: Lippert John A., Snyder Edward J.
Принадлежит:

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section extends into the tube structure. The tube structure includes a plurality of bypass cuts formed tangentially within the tube structure to increase the flexibility of the tube structure and to reduce the tendency of resilient forces from the tube structure to disrupt a shaped distal tip of the guidewire device. 1. A guidewire device having a shapeable tip , the guidewire device comprising:a core having a proximal section and a distal section, the distal section having a smaller diameter than the proximal section; and wherein the tube structure includes a cut pattern which forms a plurality of axially extending beams coupling a plurality of circumferentially extending rings,', 'wherein at least a portion of the cut pattern includes a one-beam section having a one-beam cut pattern which forms a single beam between each adjacent ring within the one-beam section, and, 'a tube structure coupled to the core such that the distal section of the core passes into the tube structure,'}wherein a distal tip of the guidewire device is configured to be manually shapeable.2. The guidewire device of claim 1 , wherein the distal section of the core tapers from the proximal section of the core.3. The guidewire device of claim 1 , further comprising a coil disposed within the tube structure so as to be positioned between an outer surface of the distal section of the core and an inner surface of the tube structure.4. The guidewire device of claim 3 , wherein the coil is configured in size and shape to pack the space between the outer surface of the distal section of the core and the inner surface of the tube such that a curvature of the tube structure is aligned with a curvature of the distal section of the core when the ...

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Номер записи: 8
18-01-2018 дата публикации

GUIDEWIRE DEVICES HAVING DISTALLY EXTENDING COILS AND SHAPEABLE TIPS

Номер: US20180015262A1
Автор: Lippert John A., Snyder Edward J.
Принадлежит:

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section of the core extends into and distally beyond the tube structure. The portion of the core extending distally beyond the tube forms a shapeable tip. One or more coils also extend distally beyond the tube. The tip is configured to reduce the tendency of resilient forces from the tube structure to disrupt a customized shape of the tip. 1. A guidewire device having a shapeable tip , the guidewire device comprising:a core having a proximal section and a distal section, the distal section having a smaller diameter than the proximal section;a tube structure coupled to the core such that the distal section of the core passes into the tube structure and passes distally beyond the tube structure to form a shapeable tip; andone or more coils encompassing at least a portion of the tip.2. The guidewire device of claim 1 , wherein the distal section of the core tapers from the proximal section of the core.3. The guidewire device of claim 1 , wherein the shapeable tip extends distally beyond the tube a distance of about 0.5 cm to 5 cm claim 1 , or about 1 cm to 3 cm.4. The guidewire device of claim 1 , wherein the one or more coils includes an outer coil coupled to a distal end of the tube structure and extending distally from the tube structure.5. The guidewire device of claim 4 , wherein the outer coil is formed from a material that is more plastically deformable than nitinol.6. The guidewire device of claim 5 , wherein the outer coil is formed from stainless steel.7. The guidewire device of claim 4 , wherein the one or more coils include an inner coil disposed at least partially within the tube structure claim 4 , and wherein the outer coil encompasses at least a portion of the inner coil extending distally beyond ...

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Номер записи: 9
18-01-2018 дата публикации

GUIDEWIRE DEVICES HAVING SHAPEABLE POLYMER TIPS

Номер: US20180015263A1
Автор: Lippert John A., Snyder Edward J.
Принадлежит:

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section of the core extends into and distally beyond the tube structure. The portion of the core extending distally beyond the tube forms a shapeable tip. A polymer covering encompasses the tip. The tip is configured to reduce the tendency of resilient forces from the tube structure to disrupt a customized shape of the tip. 1. A guidewire device having a shapeable tip , the guidewire device comprising:a core having a proximal section and a distal section, the distal section having a smaller diameter than the proximal section;a tube structure coupled to the core such that the distal section of the core passes into the tube structure and passes distally beyond the tube structure to form a shapeable tip; anda polymer covering encompassing at least a portion of the tip.2. The guidewire device of claim 1 , wherein the distal section of the core tapers from the proximal section of the core.3. The guidewire device of claim 1 , wherein the shapeable tip extends distally beyond the tube a distance of about 0.5 cm to 5 cm claim 1 , or about 1 cm to 3 cm.4. The guidewire device of claim 1 , further comprising a coil partially disposed within the tube structure and partially extending distally beyond the tube structure.5. The guidewire device of claim 4 , wherein the portion of the coil extending distally beyond the tube structure is encompassed by the polymer covering.6. The guidewire device of claim 4 , wherein the portion of the coil disposed within the tube structure encompasses the core and is positioned between an outer surface of the core and an inner surface of the tube structure.7. The guidewire device of claim 4 , wherein the coil is configured in size and shape to pack the space between the core and the tube ...

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Номер записи: 10
28-01-2021 дата публикации

IMAGING ASSISTING DIAGNOSTIC DEVICE

Номер: US20210022963A1
Автор: Soliman Alaaeldin
Принадлежит:

An image assisting diagnostic device includes a gastric tube; and a flexible cord removably attached to the gastric tube, wherein the flexible cord includes a first end having a probe tip; and a second end positioned at an opposite end from the first end, wherein the flexible cord includes a series of sections alternating between radiopaque material and substantially radiolucent material. The gastric tube includes a first diameter, and the flexible cord includes a second diameter, wherein the first diameter is different from the second diameter. The first diameter may be larger than the second diameter. The series of sections may be positioned between the first end and the second end of the flexible cord. The series of sections may be positioned closer to the first end than the second end. The probe tip may include radiopaque material. 1. An imaging assisting diagnostic device comprising:a gastric tube; and a probe tip;', 'a handle end positioned opposite to the probe tip; and', 'a plurality of rods spaced apart from one another and positioned in the flexible cord., 'a flexible cord insertable in the gastric tube, wherein the flexible cord comprises2. The device of claim 1 , wherein the gastric tube comprises a nasal gastric tube.3. The device of claim 1 , wherein the gastric tube comprises an oral gastric tube.4. The device of claim 1 , wherein the plurality of rods comprises radiopaque material.5. The device of claim 1 , wherein the flexible cord comprises a section separating the plurality of rods from one another claim 1 , and wherein the section comprises material that is non-detectable by x-ray imaging.6. The device of claim 1 , wherein the probe tip comprises metal.7. The device of claim 1 , wherein the plurality of rods comprise metal.8. The device of claim 5 , wherein the material comprises plastic.9. The device of claim 1 , wherein the flexible cord comprises plastic.10. An image assisting diagnostic device comprising:a gastric tube; and a first end ...

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Номер записи: 11
31-01-2019 дата публикации

GUIDEWIRE WITH INTERNAL PRESSURE SENSOR

Номер: US20190029523A1
Автор: Belleville Claude
Принадлежит:

The present document describes a pressure guidewire. It comprises a shaft tube having a proximal section configured to provide pushability to the pressure guidewire; a middle section extending distally relative to the proximal section, the middle section comprising a cut pattern configured to provide greater flexibility in the middle section than the proximal section; and a sensor housing section extending distally relative to the middle section. The pressure guidewire further comprises an inner hypotube comprising a proximal end portion and a distal end portion, the inner hypotube positioned entirely radially inward of the shaft tube and within at least the middle section, the proximal end portion and the distal end portion of the inner hypotube being joined to the shaft tube; and a tip pressure sensor positioned in the sensor housing section. 1. A pressure guidewire comprising: a proximal section configured to provide pushability to the pressure guidewire;', 'a middle section extending distally relative to the proximal section, the middle section comprising a cut pattern configured to provide greater flexibility in the middle section than the proximal section; and', 'a sensor housing section extending distally relative to the middle section;, 'a shaft tube comprisingan inner hypotube comprising a proximal end portion and a distal end portion, the inner hypotube positioned entirely radially inward of the shaft tube and within at least the middle section, the proximal end portion and the distal end portion of the inner hypotube being joined to the shaft tube; anda tip pressure sensor positioned in the sensor housing section.2. The pressure guidewire of claim 1 , wherein the proximal and distal end portions of the inner hypotube are sealed to the shaft tube to prevent fluid from leaking through the cut pattern and into the proximal section or sensor housing section of the shaft tube.3. The pressure guidewire of claim 1 , wherein the proximal end portion of the inner ...

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Номер записи: 12
07-02-2019 дата публикации

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

Номер: US20190038441A1
Автор: Christopher E. Banas, Christopher T. Boyle, Steven R. Bailey
Принадлежит: Vactronix Scientific LLC

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.

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Номер записи: 13
18-02-2021 дата публикации

SYSTEM AND METHOD FOR DELIVERING A CATHETER

Номер: US20210046283A1
Автор: Johnson Kirk, Karg Dillon, LORENZO Juan
Принадлежит: DePuy Synthes Products, Inc.

A method of delivering a catheter to a location of interest in the vasculature, the method including positioning a self-expanding sheath within a lumen of the catheter; advancing the catheter and the self-expanding sheath in tandem over a guidewire; and distally moving a distal end of the self-expanding sheath out from the lumen of the catheter thereby causing the self-expanding sheath to move from a collapsed state within the catheter to an expanded state outside the catheter, wherein when the self-expanding sheath is in the expanded state both the self-expanding sheath and the catheter are distally advanceable in tandem. 1. A method of delivering a catheter to a location of interest in the vasculature , the method comprising:positioning a self-expanding sheath within a lumen of the catheter;advancing the catheter and the self-expanding sheath in tandem over a guidewire; anddistally moving a distal end of the self-expanding sheath out from the lumen of the catheter thereby causing the self-expanding sheath to move from a collapsed state within the catheter to an expanded state outside the catheter, wherein when the self-expanding sheath is in the expanded state both the self-expanding sheath and the catheter are distally advanceable in tandem.2. The method of claim 1 , further comprising: contacting an outer surface of the self-expanding sheath to the distal end of the lumen as the sheath is deployed claim 1 , and separating the catheter from the vessel walls with the deployed sheath.3. The method of claim 1 , further comprising: forming a plurality of slits on the self-expanding sheath between its proximal and distal ends; andcausing, by the slits, the self-expanding sheath to expand to the expanded stated with an outer diameter greater than the outer diameter of the catheter.4. The method of claim 3 , further comprising:causing, by the slits, the expandable element to form a “pear-like” shape in the expanded state.5. The method of claim 1 , further comprising: ...

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Номер записи: 14
15-02-2018 дата публикации

Ultrasound Catheter Having Protective Feature Against Breakage

Номер: US20180042636A1
Автор: Nita Henry
Принадлежит:

An ultrasound catheter has an elongate flexible catheter body having a lumen extending longitudinally therethrough, and an ultrasound transmission member extending longitudinally through the lumen of the catheter body. The ultrasound transmission member has a proximal end that is coupled to a separate ultrasound generating device, and a distal tip that is attached to the distal end of the ultrasound transmission member and which is located at the distal end of the catheter body. The ultrasound transmission member is directly attached to the catheter body and/or to a guidewire tube either directly or via an attachment device. The catheter has an additional radiopaque marker positioned on the distal end the catheter. 1. A catheter comprising:a body having a lumen;an attachment disposed within the lumen;a tube adapted to receive a guidewire attached to the body through the attachment;andan ultrasound transmission member (UTM) disposed in the lumen and having a distal tip, wherein the attachment connects the tube to the UTM.2. The catheter of further comprising a cap disposed on the tip.3. The catheter of wherein the attachment irremovably attaches the UTM to the tube.4. The catheter of wherein the attachment is disposed around the UTM.5. The catheter of wherein the attachment comprises a sleeve.6. The catheter of wherein a proximal end of the attachment is distal of a proximal end of the body.7. The catheter of wherein the attachment is attached to the UTM claim 6 , the tube claim 6 , and the body.8. The catheter of wherein the tube is additionally attached to the tip or cap.9. The catheter of further comprising an anchor wire disposed between the body and the tip.10. The catheter of wherein the anchor wire is also disposed between the body and the cap.11. The catheter of wherein the UTM is adapted for connection to an ultrasound generator integral to the catheter.12. The catheter of further comprising a cap disposed on the tip.13. The catheter of wherein the ...

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Номер записи: 15
23-02-2017 дата публикации

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

Номер: US20170049594A1
Автор: Christopher E. Banas, Christopher T. Boyle, Steven R. Bailey
Принадлежит: Advanced Bio Prosthetic Surfaces Ltd

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.

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Номер записи: 16
23-02-2017 дата публикации

ANCHORED GUIDEWIRE WITH MARKINGS TO FACILITATE ALIGNMENT

Номер: US20170050000A1
Автор: RANDALL Michael Adam
Принадлежит:

An apparatus for treating a treatment area in the vasculature using a catheter, such as one designed to deliver a payload (such as a therapeutic agent (e.g., a drug, such as paclitaxel, rapamycin, heparin and the like), a stent, a stent graft, or a combination thereof) or a working element (such as a cutter, focused force wire, or the like) to a specified location within the vasculature. The catheter may include at least one first radiopaque marking. A guidewire () for guiding the catheter to the treatment area includes an anchor () for selectively anchoring the guidewire to the vasculature, and at least one second radiopaque marking () for corresponding to the at least one first radiopaque marking of the catheter when positioned at the treatment area. 1. An apparatus for treating a treatment area in the vasculature using a catheter including a working surface having a length , comprising:a guidewire for guiding the catheter to the treatment area and including an anchor for selectively anchoring the guidewire to the vasculature, said guidewire including at least one radiopaque marking for corresponding to the length of the working surface of the catheter when positioned at the treatment area.2. The apparatus of claim 1 , wherein the guidewire includes a plurality of radiopaque markings corresponding to the length of the working surface of the catheter.3. The apparatus of claim 2 , wherein the plurality of radiopaque markings on the guidewire are equidistantly spaced.4. The apparatus of claim 2 , wherein the plurality of radiopaque markings are irregularly spaced.5. The apparatus of claim 1 , wherein the anchor is selected from the group consisting of a self-expanding stent claim 1 , a self-expanding braided stent claim 1 , a barb claim 1 , a plurality of extensible fingers claim 1 , and an inflatable balloon.6. The apparatus of claim 5 , wherein the anchor comprises an inflatable balloon and the guidewire comprises a lumen for inflating the balloon.7. The apparatus ...

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Номер записи: 17
26-02-2015 дата публикации

GUIDEWIRE WITH INTERNAL PRESSURE SENSOR

Номер: US20150057532A1
Автор: Belleville Claude
Принадлежит:

The present document describes a pressure guidewire comprising a shaft tube, a tip portion and a fiber optic pressure sensor. The shaft tube comprises a middle section and a sensor housing extending distally relative to the middle section, the sensor housing having a distal end. The tip portion extends distally relative to the shaft tube. The pressure sensor is embedded in the sensor housing. The sensor housing defines a cavity, inside the sensor housing, which is distal relative to the pressure sensor and delimited at a proximal end thereof by the pressure sensor. 1. A pressure guidewire comprising:a shaft tube comprising a sensor housing having a longitudinal axis and a distal end;a tip portion extending distally relative to the shaft tube, the tip portion having a proximal end attached to the distal end of the sensor housing; anda fiber optic pressure sensor embedded in the sensor housing and adapted to measure a pressure of a fluid which is substantially applied in the longitudinal axis.2. The pressure guidewire of claim 1 , wherein the sensor housing defines a cavity claim 1 , inside the sensor housing claim 1 , which is distal relative to the pressure sensor and delimited at a proximal end thereof by the pressure sensor.3. The pressure guidewire of claim 2 , wherein the cavity is further delimited at a distal end thereof by the proximal end of the tip.4. The pressure guidewire of claim 2 , wherein the sensor housing comprises an opening for letting a fluid penetrate in the cavity and contact the pressure sensor for measuring a pressure of the fluid.5. The pressure guidewire of claim 4 , wherein the pressure sensor comprises a diaphragm sensitive to a pressure of a fluid.6. The pressure guidewire of claim 5 , wherein the diaphragm substantially defines a plane which is perpendicular to the longitudinal axis.7. The pressure guidewire of claim 5 , wherein the cavity is delimited at a proximal end thereof by the diaphragm of the pressure sensor.8. The pressure ...

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Номер записи: 18
21-02-2019 дата публикации

METHODS AND DEVICES FOR DELIVERING DRUGS USING DRUG-DELIVERY OR DRUG-COATED GUIDEWIRES

Номер: US20190054278A1
Автор: Senn Andrew, Sorensen Erik
Принадлежит:

The present invention relates to a method of delivering drugs having e.g., anti-proliferative activity in the vascular, preferably, the cardiovascular, system locally or systematically using an at least partially drug-coated guidewire. The drug-coated guidewire, particularly an expansion member or portion thereof, is brought into contact with the target tissue or in circulation and the drugs are quickly released into the area surrounding the device in a short time after the contact step. Once the therapeutic drugs are released, they are quickly and effectively absorbed by the surrounding cells or circulation. 1. A guidewire , comprising:a) an inner helically wound coil extending along a longitudinal axis from an inner helically wound coil proximal portion to an inner helically wound coil distal portion having an inner helically wound coil distal end;b) a distal atraumatic tip connected to the inner helically wound coil distal end;c) a radiopaque coil supported on the inner helically wound coil distal portion;d) an outer helically wound coil supported on the inner helically wound coil and extending along the longitudinal axis from an outer helically wound coil proximal end to an outer helically wound coil distal portion having an outer helically wound coil distal end, wherein the inner helically wound coil is wound in a first direction about the longitudinal axis and the outer helically wound coil is wound in a second, opposite direction, and wherein the outer helically wound coil distal end is proximal the radiopaque coil; ande) a tubular member movably supported on the inner helically wound coil proximal portion, the tubular member extending from a tubular member proximal portion to a tubular member distal end, wherein the tubular member distal end is connected to the outer helically wound coil proximal end,f) wherein, torsional manipulation of the outer helically wound coil in a first rotational direction about the longitudinal axis, the first rotational direction ...

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Номер записи: 19
20-02-2020 дата публикации

Guide wire-catheter assembly

Номер: US20200054864A1
Автор: Mark-Paul Franciscus Maria Vrancken Peeters, Sander Martijn HAVIK
Принадлежит: Mencius Medical BV

A guide wire-catheter assembly includes a catheter tube having a longitudinal channel, and a guide wire configured to be movable in the longitudinal channel. The catheter tube includes a bendable part near its distal end. The bendable part includes, in the circumferential direction of the catheter tube, a varying flexibility, such that exerting a longitudinal compression force in a proximal direction at a compression location distally of the distal end part results in bending of the bendable part. The guide wire includes an expandable part, where the expandable part is movable between a non-expanded position, in which a cross section of the expandable part is smaller than a smallest cross section of the longitudinal channel of the catheter tube and an expanded position. When the expandable part is in the non-expanded position, the guide wire can be moved completely in and out of the longitudinal channel of the catheter tube.

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Номер записи: 20
15-03-2018 дата публикации

INTEGRATED COIL VASCULAR DEVICES

Номер: US20180071496A1
Автор: Davis Clark C., Lippert John A., Snyder Edward J., Tumlund Todd
Принадлежит:

The present disclosure relates to vascular devices such as guidewires and microcatheters having integrated coil sections for optimizing torquability, flexibility, and ability to shape and maintain the distal tip. A guidewire device includes a core and a tube structure coupled to the core such that at least a portion of the core passes into the tube structure. A distal section of the tube structure includes a spiral cut arrangement that configures the distal section as an integral coil integrally incorporated as part of the tube structure. The integrated coil configuration increases the flexibility of the tube structure to reduce the tendency of resilient forces from the tube structure to disrupt a shaped distal tip of the guidewire device. 1. A guidewire device , comprising:a core; anda tube structure having a proximal section and a distal section, the proximal section of the tube structure being coupled to the core and at least a portion of the core passing into the tube structure and extending toward the distal section of the tube structure,wherein the distal section of the tube structure includes a spiral cut pattern which forms an integral coil in the distal section of the tube structure, the integral coil providing the distal section of the tube structure greater flexibility than the proximal section of the tube structure.2. The guidewire device of claim 1 , wherein the integral coil includes turns having widths that progressively widen or progressively narrow along a length of the tube structure toward a distal end of the device.3. The guidewire device of claim 1 , wherein the integral coil includes gaps between turns that progressively widen or progressively narrow along a length of the tube structure toward a distal end of the device.4. The guidewire device of claim 1 , wherein the distal section further includes a separate coil with a pitch aligning with a pitch of the integral coil such that the separate coil is interwoven with the integral coil.5. The ...

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Номер записи: 21
18-03-2021 дата публикации

USABLE-LENGTH-SELECTABLE CATHETER TO TREAT VASCULAR PATHOLOGIES

Номер: US20210077789A1
Автор: Fritz Ulf, Gianotti Marc
Принадлежит: CTI Vascular AG

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

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Номер записи: 22
22-03-2018 дата публикации

Radiopaque Composite Wire for Medical Applications and Method of Making a Radiopaque Composite Wire

Номер: US20180078742A1
Автор: James Butler, John Neilan
Принадлежит: Cook Medical Technologies LLC

A radiopaque composite wire for medical applications comprises a core comprising a rare earth metal, an outer layer comprising a nickel-titanium alloy disposed over the core, and a diffusion barrier comprising a barrier material between the core and the outer layer. A method of making a radiopaque composite wire includes cold drawing a composite billet through a die, where the composite billet includes a tube comprising a nickel-titanium alloy disposed about a rod comprising a rare earth metal, and a barrier layer comprising a barrier material disposed between the tube and the rod. After cold drawing, the composite billet is annealed to relieve strain. After multiple passes of the cold drawing and annealing, a radiopaque composite wire having a core comprising the rare earth metal, an outer layer comprising the nickel-titanium alloy, and a diffusion barrier comprising the barrier material between the core and the outer layer is formed.

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Номер записи: 23
31-03-2016 дата публикации

WIRE GUIDE FOR TRAVERSING BODY PASSAGES

Номер: US20160089515A1
Автор: Aggerholm Steen, HANSEN Palle Munk, Hendriksen Per
Принадлежит:

A wire guide for feeding a medical catheter through the body passage of a patient to a distant target site within the body has a variably flexible distal portion. The distal portion facilitates threading the guidewire in a tortuous path through acute bends at branch junctions in the body passages of the patient. The wire guide end is able to feed into very delicate vessels such as ventricles of the brain and the spinal canal without puncturing the wall or damaging organs. 1. A wire guide to access a body vessel of a patient comprising: a flexible portion comprising a covering and a plurality of members disposed in the covering, the covering having an open end extending to a closed end, the open end attached about the distal end of the cannula, the plurality of members including a first body attached to the distal end of the cannula and a second body disposed at the closed end of the covering, the members having apertures defining a second lumen in axial alignment with the first lumen;', 'a core wire having a distal tip and being slidably disposed through the first lumen and the second lumen, the distal tip being attached to the second body., 'a cannula having a proximal end and a distal end, the cannula having a first lumen formed through the proximal and distal ends and having a plurality of cuts to allow the cannula to extend, defining variable rigidity;'}2. The wire guide of further comprising a first configuration having a first rigidity wherein the cuts are unextended.3. The wire guide of further comprising claim 2 , a second configuration having a second rigidity wherein the cuts are extended claim 2 , the second rigidity being less than the first rigidity.4. The wire guide of claim 1 , wherein at least one of the plurality of members comprises a magnetically responsive material for magnetically accessing the body vessel of the patient.5. The wire guide of claim 4 , wherein the magnetically responsive material is one of a permanent magnet claim 4 , a ...

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Номер записи: 24
30-03-2017 дата публикации

GUIDE WIRES, CATHETERS, AND GUIDE WIRE CATHETER SYSTEMS AND METHODS

Номер: US20170087339A1
Автор: Taber Mark
Принадлежит:

Guide wires, systems and methods can improve advancement through the vasculature, particularly when the catheter tip encounters resistance or an obstruction and cannot advance. The guide wire can include an enlargement spaced proximally from a distal tip of the elongated member alone or in combination with a configured portion of the wire. The configured guide wire can be positioned in the vasculature and a medical device such as a catheter can track over the guide wire. The catheter can get caught-up in the vasculature or on implanted devices during advancement. When that occurs, the configured guide wire can be retracted back to the catheter tip and the guide wire configuration can cause the catheter distal tip to move and/or deflect away from the obstruction or resistance allowing the system to advance. The guide wire can be returned to its distal position and the procedure can continue. 1. A guide wire configured for advancing a device through a vasculature , the guide wire comprising:an elongated member having a proximal end and a distal end; andan enlargement being disposed on the distal end of the elongated member, the enlargement being spaced proximally from a distal tip of the distal end of the elongated member, the enlargement having a dimension larger than a lumen diameter of the device.2. The guide wire of claim 1 , wherein a portion of the proximal end of the elongated member has a rigidity coefficient greater than a portion of the distal end.3. The guide wire of claim 1 , further comprising a bend in the elongated member claim 1 , the bend being disposed proximate the enlargement on a proximal side of the enlargement.4. The guide wire of claim 3 , wherein at least one of the bend and the enlargement has a hydrophilic coating or is radio-opaque.5. The guide wire of claim 3 , wherein the bend is at least one of: a curve claim 3 , a sinusoidal curve claim 3 , a non-linear section claim 3 , an angulation claim 3 , a peak claim 3 , a valley claim 3 , a ...

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Номер записи: 25
19-03-2020 дата публикации

GUIDEWIRE WITH INTERNAL PRESSURE SENSOR

Номер: US20200085307A1
Автор: Belleville Claude
Принадлежит:

The present document describes a pressure guidewire. It comprises a shaft tube having a proximal section and a sensor housing having a distal end, the proximal section and the sensor housing being the continuity of the same shaft tube. A fiber optic pressure sensor is embedded in the sensor housing and comprises an optical fiber extending within the sensor housing, the sensor adapted to measure a pressure of a fluid which is substantially applied in an axis collinear with the longitudinal axis of the guidewire. A marker band, to help in localizing the pressure guidewire in a patient's vessels, is embedded inside the sensor housing and fixed to the optical fiber for holding the pressure sensor inside the sensor housing. 1. A pressure guidewire having a longitudinal axis comprising:a shaft tube having a proximal section and a sensor housing having a distal end;a fiber optic pressure sensor assembly embedded in the sensor housing and comprising a pressure sensor and an optical fiber extending within the sensor housing, the pressure sensor adapted to measure a pressure of a fluid which is substantially applied in an axis collinear with the longitudinal axis of the guidewire; anda band to support the fiber optic pressure sensor assembly, the band being embedded inside the sensor housing and fixed to the fiber optic pressure sensor assembly for holding the pressure sensor inside the sensor housing.2. The pressure guidewire of claim 1 , further comprising a tip portion extending distally relative to the sensor housing claim 1 , the tip portion having a proximal end attached to the distal end of the sensor housing claim 1 , the tip portion being the most distal portion of the pressure guidewire.3. The pressure guidewire of claim 1 , wherein the shaft tube comprises a proximal section claim 1 , the proximal section and the sensor housing being the continuity of the same shaft tube.4. The pressure guidewire of claim 1 , further comprising a middle section extending further ...

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Номер записи: 26
07-04-2016 дата публикации

HYBRID INTRODUCER

Номер: US20160096005A1
Автор: Bhola Shweta
Принадлежит:

A hybrid introducer and its use are provided. In one form, a method includes one or more of the following steps: feeding a guidewire through a hybrid introducer into a scope, the hybrid introducer including a proximal thumb advance portion and a distal tapered portion coupled to the proximal thumb advance portion; removing the proximal thumb advance portion; and feeding an accessory instrument through the distal tapered portion into the scope. 1. A method comprising:feeding a guidewire through a hybrid introducer into a scope, the hybrid introducer including a proximal thumb advance portion and a distal tapered portion coupled to the proximal thumb advance portion;removing the proximal thumb advance portion; andfeeding an accessory instrument through the distal tapered portion into the scope.2. The method of wherein removing the proximal thumb advance portion includes decoupling the proximal thumb advance portion from the distal tapered portion.3. The method of wherein the distal tapered portion is coupled to the proximal thumb advance portion with a snap fit mechanism.4. The method of wherein the distal tapered portion is coupled to the proximal thumb advance portion with a screw mechanism.5. The method of wherein the scope is an endoscope.6. The method of further comprising advancing a distal end of the guidewire to a desired location in a patient's body as the guidewire is being fed through the hybrid introducer.7. The method of further comprising imaging the guidewire in the patient's body to determine if the distal end of the guidewire is at the desired location.8. The method of wherein imaging the guidewire includes generating an x-ray image of the guidewire in the patient's body.9. The method of further comprising feeding a second endoscope over the guidewire.10. The method of further comprising removing the proximal thumb advance portion of the hybrid introducer and feeding an accessory instrument through the distal tapered portion of the hybrid introducer ...

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Номер записи: 27
26-06-2014 дата публикации

Determining position of medical device in branched anatomical structure

Номер: US20140180063A1
Автор: Giuseppe Maria Prisco, Tao Zhao
Принадлежит: Intuitive Surgical Operations Inc

Information extracted from sequential images captured from the perspective of a distal end of a medical device moving through an anatomical structure are compared with corresponding information extracted from a computer model of the anatomical structure. A most likely match between the information extracted from the sequential images and the corresponding information extracted from the computer model is then determined using probabilities associated with a set of potential matches so as to register the computer model of the anatomical structure to the medical device and thereby determine the lumen of the anatomical structure which the medical device is currently in. Sensor information may be used to limit the set of potential matches. Feature attributes associated with the sequence of images and the set of potential matches may be quantitatively compared as part of the determination of the most likely match.

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Номер записи: 28
26-03-2020 дата публикации

CORE-WIRE JOINT WITH MICRO-FABRICATED MEDICAL DEVICES

Номер: US20200094027A1
Автор: Davis Clark C.
Принадлежит:

The present disclosure relates to core-wire joints for micro-fabricated medical devices, such as guidewires. A hybrid guidewire device includes a core () having a joint () between a proximal section () and a distal section () of the core and a tube structure () surrounding the joint. The proximal section of the core is made of or includes stainless steel and the distal section is made of or includes a superelastic material such as nitinol. Further, the terminal, distal portion of the proximal section of the core includes serrations (), and a terminal, proximal portion of the distal section of the core includes complementary serrations () sized and shaped to interlock with serrations (). The distal end of the proximal section mechanically interlocks with a proximal end the distal section to form the joint. 1. A hybrid guidewire device , comprising: a proximal section;', 'a distal section; and', 'a joint between the proximal and distal sections, wherein the joint comprises a distal end of the proximal section mechanically interlocked with a proximal end of the distal section; and, 'a core comprisinga tube structure surrounding the joint.2. The hybrid guidewire device of claim 1 , wherein the core comprises a circular or arcuate cross-section.3. The hybrid guidewire device of claim 1 , wherein the distal end of the proximal section and the proximal end of the distal section are truncated along a plane transverse to the longitudinal axis of the core such that the joint comprises overlapping the truncated distal end of the proximal section with the truncated proximal end of the distal section.4. The hybrid guidewire device as in claim 1 , wherein a girth of the joint is less than or equal to a girth of the distal section.5. (canceled)6. The hybrid guidewire device as in claim 1 , wherein the distal end of the proximal section comprises serrations claim 1 , and wherein the proximal end of the distal section comprises complementary serrations configured to engage and ...

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Номер записи: 29
13-04-2017 дата публикации

MEDICAL GUIDEWIRE

Номер: US20170100244A1
Автор: Chang Robert, CHEN JOHN JIANHUA, Hou Dongming, Ino Takashi H., Sutton Benjamin T.
Принадлежит: Boston Scientific Scimed Inc.

A guidewire system may include a guidewire having a relatively stiff proximal section and a relatively flexible distal section joined by a transition region, and a TAVI device slidably disposed on the guidewire. The guidewire may include an expandable element disposed about the transition region. The expandable element may be configured to expand from a collapsed configuration to an expanded configuration. The guidewire may include an expandable element disposed at the distal end. The distal section may be pre-configured to form more than one distal loop. A method of protecting an apex of a left ventricle during a TAVI procedure may include inserting a guidewire into the left ventricle, positioning a transition region adjacent the apex, expanding an expandable element such that the expandable element spans the apex, advancing a TAVI device distally over the guidewire to an aortic valve, and performing a TAVI procedure at the aortic valve. 1. (canceled)2. A method of protecting an apex of a left ventricle of a heart of a patient during a TAVI procedure , the method comprising:inserting a guidewire upstream through an aorta of the patient and into the left ventricle, the guidewire including a relatively stiff proximal section, a relatively flexible distal section joined to the relatively stiff proximal section by a transition region, and an expandable element disposed about the transition region;advancing the relatively flexible distal section into the left ventricle until a distal curve forms in contact with a left ventricle wall;positioning the transition region adjacent the apex;expanding the expandable element from a collapsed configuration to an expanded configuration within the left ventricle such that the expandable element spans the apex;advancing a TAVI device distally over the guidewire to an aortic valve; andperforming a TAVI procedure at the aortic valve.324. The method of claim 2 , wherein the relatively flexible distal section is sufficiently flexible to ...

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Номер записи: 30
26-04-2018 дата публикации

System and Method for Targeted Delivery of Therapeutic Agents to Tissue

Номер: US20180110964A1
Автор: Hammond Jeffrey, Weadock Kevin
Принадлежит:

Novel systems for and methods of delivering therapeutic agents to target tissues are disclosed. The method of delivering a therapeutic agent to a target tissue involves identifying a target tissue via an imaging modality and then using a guidewire capable of anchoring in tissue to advance a cannula to the target tissue. The guidewire and novel cannula configurations enable rapid and repeated treatments of the target tissue without the need for subsequent imaging. The cannula is coupled to a source of ultrasound, radiation, radiofrequency energy, or chemotherapeutic agents which can then be delivered to from the cannula the target tissue. The system and method can be used to treat tumors that are small or surgically inoperable. In addition, the system can be used to treat lymphatic tissue that may contain metastases from the tumors. 118-. (canceled)19. A method of treating tumor cells in lymphatic tissue , the method comprising;identifying a tumor via an imaging modality;providing a needle having a distal end and a proximal end and a lumen;inserting the needle into a patient so that its distal end is proximate a tumor;inserting a guidewire having a proximal end and a distal end through the lumen of the needle;advancing the guidewire in the lumen so that its distal end is positioned proximate the tumor;removing the needle from the patient;providing a cannula having a proximal end and a distal end and at least two lumens;inserting the proximal end of the guidewire into one of the lumens of the cannula and advancing the cannula over the guidewire until the distal end of the cannula is proximate the tumor but not within a blood vessel;coupling one of the lumens on the proximal end of the cannula to a source of therapeutic agent; and,delivering the therapeutic agent to the target tissue so as to enable local lymphatic vessels to absorb the therapeutic agent.2021-. (canceled)22. The method of claim 19 , wherein the imaging modality is selected from the group consisting of ...

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Номер записи: 31
26-04-2018 дата публикации

Guidewires Having Improved Mechanical Strength and Electromagnetic Shielding

Номер: US20180110965A1
Автор: Gliner Vadim, Govari Assaf, Sema Ghislain G.
Принадлежит:

A medical guidewire includes a flexible spiral coil, a fiber, and a strengthening element. The coil is configured to guide a medical device into a patient body. The fiber extends along at least part of the coil, is coupled to the at least part of the coil at one or more first predefined locations and is configured to mechanically strengthen the at least part of the coil. The strengthening element is coupled to one or more second predefined locations along a distal section of the coil, and is configured to mechanically strengthen the distal section. 1. A medical guidewire , comprising:a flexible spiral coil, which is configured to guide a medical device into a patient body;a fiber, which extends along at least part of the coil, and is coupled to the at least part of the coil at one or more first predefined locations and is configured to mechanically strengthen the at least part of the coil; anda strengthening element, which is coupled to one or more second predefined locations along a distal section of the coil, and which is configured to mechanically strengthen the distal section.2. The medical guidewire according to claim 1 , wherein the coil comprises a position sensor coupled to the distal section.3. The medical guidewire according to claim 2 , wherein the strengthening element comprises an electrically-conductive material claim 2 , and is further configured to provide electromagnetic shielding that reduces electromagnetic interference to measurements of the position sensor.4. The medical guidewire according to claim 3 , wherein the position sensor is configured to sense signals in a first frequency range claim 3 , and wherein the strengthening element is configured to pass the signals in the first frequency range claim 3 , and to reduce the electromagnetic interference in a second frequency range that is different from the first frequency range.5. The medical guidewire according to claim 1 , wherein the strengthening element comprises a biocompatible material.6. ...

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Номер записи: 32
27-04-2017 дата публикации

FLEXIBLE GUIDE WIRE WITH TANTALUM MARKER

Номер: US20170113024A1
Автор: Frock Melissa, Hess Harold, Moseley Todd, Snell Douglas
Принадлежит: Spinal Simplicity, LLC

A guide wire comprises a longitudinal body having a proximal end portion and an opposing distal end portion. The proximal and distal end portions have rigid shafts with a flexible portion disposed therebetween. The flexible portion is fixedly attached to the proximal end portion and distal end portion. An outer surface of the flexible portion has a diameter equal to an outer surface of the proximal end portion and an outer surface of the distal end portion. The distal end portion further comprises at least one marker disposed therein configured to locate a distal tip of the guide wire during imaging. 1. A guide wire , comprising:a longitudinal body having a central axis including a proximal end portion and an opposing distal end portion, the proximal and distal end portions having rigid shafts; anda flexible portion disposed between the proximal and distal end portions.2. The guide wire of claim 1 , wherein the flexible portion is fixedly attached to the proximal end portion and distal end portion and wherein an outer surface of the flexible portion has a diameter equal to an outer surface of the proximal end portion and an outer surface of the distal end portion.3. The guide wire of claim 1 , wherein the flexible portion includes a coil tube formed generally perpendicular to the central axis.4. The guide wire of claim 3 , wherein the flexible portion includes stainless steel.5. The guide wire of claim 1 , wherein the distal end portion has a distal tip configured for guiding a pedicle screw insertion.6. The guide wire of claim 1 , wherein the proximal portion has a longitudinal dimension shorter than a longitudinal dimension of the distal portion and the flexible portion individually.7. The guide wire of claim 6 , wherein the flexible portion has a longitudinal dimension shorter than a longitudinal dimension of the distal portion.8. The guide wire of claim 1 , wherein the flexible portion is approximately five inches.9. The guide wire of claim 8 , wherein the ...

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Номер записи: 33
05-05-2016 дата публикации

INTRAVASCULAR DEVICES, SYSTEMS, AND METHODS HAVING A RADIOPAQUE PATTERNED FLEXIBLE TIP

Номер: US20160121085A1
Автор: BURKETT David, Reyes Ramiro
Принадлежит:

Intravascular devices, systems, and methods are disclosed. In some instances, the intravascular device is a guide wire with distal tip element having a radiopaque marker pattern. For example, in some implementations a sensing guide wire includes a flexible elongate member; a sensing element coupled to the flexible elongate member; a flexible tip element coupled to and extending distally from the sensing element, the flexible tip element having a first radiopaque section, a second radiopaque section, and a non-radiopaque section positioned between the first and second radiopaque sections. Methods of making, manufacturing, and/or assembling such intravascular devices and associated systems are also provided. 1. A sensing guide wire , comprising:a flexible elongate member;a sensing element coupled to the flexible elongate member;a flexible tip element coupled to and extending distally from the sensing element, the flexible tip element having a first radiopaque section, a second radiopaque section, and a non-radiopaque section positioned between the first and second radiopaque sections.2. The guide wire of claim 1 , wherein the sensing element includes at least one of a pressure sensor or a flow sensor.3. The guide wire of claim 1 , wherein the first radiopaque section is adjacent a sensor housing in which the sensing element is disposed.4. The guide wire of claim 1 , wherein the first and second radiopaque sections are each defined by a coil formed of a radiopaque material.5. The guide wire of claim 4 , wherein the radiopaque material is selected from the group consisting of platinum claim 4 , tungsten claim 4 , and gold.6. The guide wire of claim 4 , wherein the non-radiopaque section is defined by a coil formed of a non-radiopaque material.7. The guide wire of claim 6 , wherein the non-radiopaque material is selected from the group consisting of stainless steel claim 6 , MP35N claim 6 , and ninitol alloys.8. The guide wire of claim 6 , wherein each of the first and ...

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Номер записи: 34
04-05-2017 дата публикации

GUIDEWIRE

Номер: US20170120018A1
Автор: OOTANI Yasunao, TANO Yutaka
Принадлежит: TERUMO KABUSHIKI KAISHA

A guidewire is disclosed, which includes a core member that is an elongated member having flexibility, and a coil member that is disposed so as to cover a distal portion of the core member and that is formed by helically winding a strand, the coil member being fixed to the core member in a distal portion of the guidewire. The core member includes a body portion in a proximal portion thereof and a flat portion in the distal portion thereof. At least one projection is formed on at least one of two side surfaces of the flat portion extending in a longitudinal direction, the at least one projection projecting into a space between adjacent turns of the strand and being in contact with the strand. 1. A guidewire comprising:a core member that is an elongated member having flexibility; anda coil member that is disposed so as to cover a distal portion of the core member and that is formed by helically winding a strand, the coil member being fixed to the core member in a distal portion of the guidewire,wherein the core member includes a body portion in a proximal portion of the core member and a flat portion in the distal portion of the core member, andwherein at least one projection is formed on at least one of two side surfaces of the flat portion extending in a longitudinal direction, the at least one projection projecting into a space between adjacent turns of the strand and being in contact with the strand.2. The guidewire according to claim 1 , wherein a longitudinal sectional shape of the projection is substantially triangular.3. The guidewire according to claim 1 , wherein a plurality of the projections are formed on each of the two side surfaces of the flat portion extending in the longitudinal direction claim 1 , and a width of the flat portion including the projections is larger than an inside diameter of the coil member.4. The guidewire according to claim 2 , wherein a plurality of the projections are formed on each of the two side surfaces of the flat portion ...

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Номер записи: 35
16-04-2020 дата публикации

TARGETING GUIDEWIRE

Номер: US20200114128A1
Автор: Eaton Elizabeth A., Roeder Blayne A.
Принадлежит: Cook Medical Technologies LLC

The disclosure is directed to a targeting guidewire. The guidewire includes a distal portion including four portions and three transition zones between the adjacent portions. A first and a third portions have a smaller stiffness than a second and a fourth portions. The first and the third portions may also have a smaller overall outer diameters than the second and the fourth portions. The three transition zones comprises marking elements so as to delineate their locations. 1. A guidewire , comprising:a distal section, a proximal section, and a middle section between the distal section and the proximal section;a first portion of a first stiffness disposed at a distal end of the distal section, the first portion having a first overall outer diameter;a second portion of a second stiffness having a second overall outer diameter and disposed adjacent to the first portion;a third portion of a third stiffness having a third overall outer diameter and disposed adjacent to the second portion;a fourth portion of a fourth stiffness disposed adjacent to the third portion and configured to connect to the middle section, the fourth portion having a fourth overall outer diameter;a first transition zone disposed between the first portion and the second portion, wherein a first end of the first transition zone is adjacent to the first portion and has a same overall outer diameter as the first portion, and a second end of the first transition zone is adjacent to the second portion and has a same overall outer diameter as the second portion;a second transition zone disposed between the second portion and the third portion, wherein a first end of the second transition zone is adjacent to the second portion and has a same overall outer diameter as the second portion, and a second end of the second transition zone is adjacent to the third portion and has a same overall outer diameter as the third portion;a third transition zone disposed between the third portion and the fourth portion, ...

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Номер записи: 36
03-06-2021 дата публикации

GUIDEWIRE DEVICES HAVING SHAPEABLE POLYMER TIPS

Номер: US20210162184A1
Автор: Lippert John A., Snyder Edward J.
Принадлежит:

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section of the core extends into and distally beyond the tube structure. The portion of the core extending distally beyond the tube forms a shapeable tip. A polymer covering encompasses the tip. The tip is configured to reduce the tendency of resilient forces from the tube structure to disrupt a customized shape of the tip. 1. A guidewire device comprising:a core having a proximal section and a distal section, the distal section having a smaller diameter than the proximal section;a tube structure coupled to the core such that the distal section of the core passes into the tube structure and passes distally beyond the tube structure to form a tip;a braided material coupled to a distal end of the tube structure and extending distally from the tube structure, the braided material encompassing at least a portion of the tip; anda polymer encompassing at least a portion of the tip.2. The guidewire device of claim 1 , wherein the distal section of the core tapers from the proximal section of the core.3. The guidewire device of claim 1 , wherein the tip extends distally beyond the tube a distance of about 0.5 cm to 5 cm.4. The guidewire device of claim 1 , further comprising a coil partially disposed within the tube structure and partially extending distally beyond the tube structure.5. The guidewire device of claim 4 , wherein the portion of the coil extending distally beyond the tube structure is encompassed by the polymer.6. The guidewire device of claim 4 , wherein the portion of the coil disposed within the tube structure encompasses the core and is positioned between an outer surface of the core and an inner surface of the tube structure.7. The guidewire device of claim 4 , wherein the coil is formed from a ...

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Номер записи: 37
30-04-2020 дата публикации

System and method for navigating a device through a path to a target location

Номер: US20200129740A1
Автор: Adi Dafni, Adi Sheinfeld, Nicholas Kottenstette, Per Bergman, Steven J. Blacker
Принадлежит: Corindus Inc

A method for delivering an elongated medical device along a path to a target location using a catheter procedure system includes generating a mask of the path, tracking a position of a distal portion of the elongated medical device based on a set of real-time images and determining a remaining path length based at least on the position of the distal portion of the elongated medical device. The remaining path length is a distance between the distal portion of the elongated medical device and the target location. The remaining path length decreases as the distal portion of the elongated medical device approaches the target location. The method also includes updating the remaining path length during movement of the elongated medical device, determining if the distal portion of the elongated medical device is off path, adjusting the position of the elongated medical device if the distal portion of the elongated medical device is off path, monitoring the distal portion of the elongated medical device in the set of real-time images to identify a prolapse and advancing the elongated medical device to the target location at a velocity determined based at least on the remaining path length.

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Номер записи: 38
10-06-2021 дата публикации

System for and method of treating aneurysms

Номер: US20210169496A1
Автор: Aamir Badruddin, Edgard Luiz Ramos Pereira, Osama O. Zaidat, Thomas J. Wolfe
Принадлежит: Galaxy Therapeutics Llc

An apparatus for treating an aneurysm in a blood vessel includes a wire to be advanced within a tube and an occlusion element disposed on the wire. The occlusion element includes a cover and an inner anchoring member. The occlusion element is configured to fit within the tube and slide out of an opening at distal end of the tube in response to movement of the wire. The cover is configured to expand to an expanded configuration when advanced into the aneurysm, wherein the cover comprises a diameter that is greater than the diameter of a neck portion of the aneurysm and is configured such that a first portion of the cover contacts an interior surface of the aneurysm and a second portion covers the neck portion of the aneurysm. The inner anchoring member extends from the cover portion and is configured to contact the interior surface of the aneurysm.

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Номер записи: 39
24-05-2018 дата публикации

GUIDE WIRE

Номер: US20180140802A1
Автор: AOKI Teruo
Принадлежит: TERUMO KABUSHIKI KAISHA

A guide wire includes a long flexible wire main body, and a coil that is formed by winding a plurality of wires in a spiral shape, and which is disposed at an outer periphery of a distal portion of the wire main body to cover the distal portion. The coil includes a coil distal portion that is disposed on a distal side in the distal portion, a coil proximal portion that is disposed on a further proximal side in comparison to the coil distal portion, and a coil intermediate portion that is disposed between the coil distal portion and the coil proximal portion, and includes a wire having a wire diameter that is smaller than a wire diameter of the wires of the coil distal portion and the coil proximal portion. 1. A guide wire comprising:a flexible long wire main body; anda coil formed by winding a plurality of wires in a spiral shape, and disposed about an outer periphery of a distal portion of the wire main body to cover the distal portion,wherein the coil includes:a coil distal portion disposed on a distal side,a coil proximal portion disposed on a proximal side in comparison to the coil distal portion, anda coil intermediate portion disposed between the coil distal portion and the coil proximal portion, the coil intermediate portion including at least one of the plurality of wires having a wire diameter that is smaller than a wire diameter of the plurality of wires forming the coil distal portion and the coil proximal portion.2. The guide wire according to claim 1 ,wherein the wire main body includes a small-diameter portion having an outer diameter that is smaller than an outer diameter of at least some other portions of the wire main body, andthe coil intermediate portion is provided at a position that overlaps at least a portion of the small-diameter portion in a direction along a longitudinal direction of the wire main body.3. The guide wire according to claim 2 ,wherein the wire main body includes a tapered portion having an outer diameter which is gradually ...

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Номер записи: 40
04-06-2015 дата публикации

Coaxial guide coil for interventional cardiology procedures

Номер: US20150151090A1
Автор: Gregg Stuart Sutton, Jeffrey M. Welch, Karl V. Ganske
Принадлежит: GMEDIX Inc

The present application describes a coaxial guide coil catheter device to be placed inside of a standard cardiovascular guide catheter for facilitating extra support in the coronary artery when advancing interventional cardiology devices such as balloon catheters and stent delivery systems. This device is passed through the main lumen of a standard guide catheter so that the tip of the coaxial guide coil device is extended past the tip of the guide catheter and into the coronary artery. The proximal portion of the coaxial guide coil will remain within the guide catheter. The device improves the ability of the guide catheter to remain seated in the coronary ostium during interventional procedures.

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Номер записи: 41
14-08-2014 дата публикации

Registration for Tracked Medical Tools and X-Ray Systems

Номер: US20140228678A1
Автор: Meyer Andreas, Schäfer Sebastian
Принадлежит:

In order to increase the accuracy of registration between a world coordinate system and an image coordinate system such that a tracked medical tool may be moved forward in the body of a patient without any additional or with limited live imaging, a method for registration of the tracked medical tool with an X-ray system is provided. The method includes receiving image data from the X-ray system at a plurality of time points, receiving tracking data from a tracking device of the tracked medical tool at the plurality of time points, and registering the world coordinate system and the image coordinate system based on the received image data and the received tracking data at the plurality of time points. 1. A method for registration of an endovascular device with an X-ray system , the endovascular device comprising a tracking device , the method comprising:receiving image data from the X-ray system at a plurality of time points, the image data comprising image data representing at least a portion of the endovascular device in a first coordinate system as the endovascular device moves within or through the first coordinate system;receiving tracking data from the tracking device at the plurality of time points, the tracking data representing a position of the endovascular device in a second coordinate system;registering, by a processor, the second coordinate system with the first coordinate system based on the received image data and the received tracking data at the plurality of time points.2. The method of claim 1 , further comprising:generating, by the processor, a plurality of projection images based on the received image data from the X-ray system; andcalculating, by the processor, positions of one or more markers of the tracking device within the first coordinate system, the first coordinate system being a three-dimensional (3D) image coordinate system,wherein the registering comprises performing point based registration between the calculated positions of the one ...

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Номер записи: 42
15-09-2022 дата публикации

TISSUE CUTTING SYSTEMS AND METHODS

Номер: US20220288357A1
Автор: Bruce Christopher G., Busold Rany, House Morgan, Khan Jaffar, Lederman Robert J., Rafiee Nasser, Rogers Toby
Принадлежит:

The disclosure provides various embodiments of systems to facilitate the cutting of luminal tissue structures percutaneously. 1. An electrosurgical guidewire , comprising:a core wire having a proximal end, and a distal end and being defined by an outer surface between the proximal end and the distal end of the core wire, said core wire having a centerline that traverses the length of the core wire from the proximal end to the distal end of the core wire;a radiopaque marker pattern disposed over the core wire to indicate a location proximate a middle section of the guidewire to be kinked and used to cut through tissue during an electrosurgical procedure; anda dielectric coating disposed about the core wire and the radiopaque marker pattern, wherein the proximal end and distal end of the core wire are exposed and the proximal end is configured to be coupled to an electrosurgical generator, and further wherein the dielectric coating is configured to be stripped from the guidewire proximate the radiopaque marker pattern,2. The electrosurgical guidewire of claim 1 , wherein the radiopaque marker pattern defines a central region to be crimped and stripped of the dielectric coating claim 1 , and a plurality of measurement indicia on either side of the central region.3. The electrosurgical guidewire of claim 2 , wherein the radiopaque marker pattern includes a radiopaque metallic material.4. The electrosurgical guidewire of claim 3 , wherein the marker pattern includes gold metallic material deposited over the core wire.5. The electrosurgical guidewire of claim 4 , wherein the marker pattern includes gold metallic material electroplated on the core wire using a mask to form the marker pattern.6. The electrosurgical guidewire of claim 3 , wherein the radiopaque marker pattern includes an uneven surface configured to enhance its visual signature under fluoroscopy.7. The electrosurgical guidewire of claim 1 , wherein the dielectric material has a dielectric strength at 1 mil ...

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Номер записи: 43
21-08-2014 дата публикации

CATHETER TIP-END ROTATION ANGLE DETECTION APPARATUS, CATHETER TIP-END ROTATION ANGLE DETECTION METHOD, AND CATHETER TIP-END ROTATION ANGLE DETECTION PROGRAM

Номер: US20140236000A1
Автор: KOZUKA Kazuki, Nakada Toru
Принадлежит: Panasonic Corporation

A catheter tip-end rotation angle detection apparatus includes a catheter rotation angle detecting unit that detects a rotation angle of a catheter in an operator's hand, an image processing unit that extracts a catheter tip-end region from an x-ray fluoroscopic image of a first x-ray fluoroscopic capturing unit, a catheter tip-end rotation angle calculation unit that calculates an offset angle between an operator's hand-side rotation angle and a catheter tip-end rotation angle, from a fluoroscopic image captured at an action time of rotating the catheter by one turn, based on an angle at which a catheter tip-end region becomes a straight line in the image processing unit, and that calculates a catheter tip-end rotation angle based on the offset angle and the operator's hand-side rotation angle, during a catheter manipulation time, and an output unit that outputs the calculated catheter tip-end rotation angle. 1. A catheter tip-end rotation angle detection apparatus that detects a rotation angle around an axis of a bent portion of a catheter , the catheter having the bent portion at a tip-end that is bent in a hook shape relative to a straight-line shaped base , as a catheter tip-end region , and being inserted into a body lumen , ["a catheter rotation angle detecting unit that detects an operator's hand-side rotation angle of the catheter in a hand of an operator;", 'an image processing unit that extracts the catheter tip-end region from an x-ray fluoroscopic image of a first x-ray fluoroscopic capturing unit that captures an x-ray fluoroscopic image by irradiating a radioactive ray to an image-capture target portion of a subject;', "a catheter tip-end rotation angle calculation unit that performs a catheter tip-end rotation angle calculation process in which an offset angle between the operator's hand-side rotation angle detected by the catheter rotation angle detecting unit and a rotation angle of the catheter tip-end is calculated from an x-ray fluoroscopic ...

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Номер записи: 44
14-05-2020 дата публикации

Guidewire

Номер: US20200146688A1
Автор: Kaarto Scott, Machold Timothy, Mathis Mark, Rodriguez Verna
Принадлежит: PneumRx, Inc.

Embodiments include a transition section for coupling a distal section and a proximal section of the guidewire. The transition section includes a main body having a first outer diameter; proximal and distal pin extensions having second and third outer diameters, wherein the proximal pin extension is configured to be fixed to the proximal section of the guidewire, and the distal pin extension is configured to be inserted into and fixed to the distal section of the guidewire. The distal pin extension includes a bore for receiving an inner core of the distal section of the guidewire. The first outer diameter may be greater than the second and third outer diameters. Also disclosed are methods of manufacturing a guidewire with such a transition section. 1. A transition section for coupling a distal section and a proximal section of a guidewire , the transition section comprising:a main body having a first outer diameter;a proximal pin extension having a second outer diameter, wherein the proximal pin extension extends proximally from the main body, and wherein the proximal pin extension is configured to be fixed to the proximal section of the guidewire; anda distal pin extension having a third outer diameter, wherein the distal pin extension extends distally from the main body, and wherein the distal pin extension is configured to be inserted into and fixed to the distal section of the guidewire, the distal pin extension comprising a bore for receiving an inner core of the distal section of the guidewire;wherein the first outer diameter is greater than the second and third outer diameters.2. The transition section of claim 1 , wherein the proximal section of the guidewire comprises a coil claim 1 , and wherein the proximal pin extension is configured to be fixed to an open end of the coil.3. The transition section of claim 1 , wherein the distal section of the guidewire comprises a coil claim 1 , and wherein the distal pin extension is configured to be fixed to an open ...

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Номер записи: 45
15-06-2017 дата публикации

ELONGATE STEERABLE DEVICES FOR INSERTION INTO A SUBJECTS BODY

Номер: US20170165456A1
Автор: ALMEIDA Aubrey, PAYNE Brody C., Rogers Geoffrey William, Tutungi Elli
Принадлежит: INTELLIMEDICAL TECHNOLOGIES PTY LTD.

Elongate, steerable devices for insertion into a subject's body, including very narrow (small diameter) devices that may be configured as steerable catheters and guidewires for use in interventional cardiology and neuroradiology. Also described are methods of making and using these devices, and controllers for controlling these steerable devices. These steerable devices may have a bendable distal region, a plurality of tendons each attached to the distal bendable region and extending from the distal bendable region to a proximal handle region with a plurality of axial translation regions. The axial translation regions may be arranged along an outer surface of the proximal handle region and each axial translation region may be coupled to a tendon for bending the distal region. The axial translation regions may be elastically connected to each other, and configured to translate the tendon and thereby steer the distal bendable region. 164-. (canceled)65. An elongate steerable device for insertion into a subject's body , the device extending from a bendable distal tip region to a proximal handle region , the device comprising:a plurality of tendons, wherein each tendon of the plurality of tendons is attached to the distal tip region and extends from the distal tip region to the proximal handle region; anda plurality of axial translation regions sequentially arranged along an outer surface of the proximal handle region, wherein each axial translation region of the plurality of axial translation regions is coupled to a tendon of the plurality of tendons;wherein each axial translation region is configured to move in a proximal to distal line to axially translate the tendon coupled to the axial translation region and thereby deflect the distal tip.66. The device of claim 65 , wherein the axial translation regions are elastically connected to each other.67. The device of claim 65 , wherein the axial translation regions are connected to a core within the proximal handle ...

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Номер записи: 46
21-05-2020 дата публикации

Delivery guidewire

Номер: US20200155803A1
Автор: Curtis James CATON, Juan F. Granada, Randolf Von Oepen
Принадлежит: Cephea Valve Technologies Inc

A delivery guidewire for navigating a catheter in the heart to deliver a valve prosthesis. The delivery guidewire comprising an elongated core, an outer sleeve disposed on the elongated core, and a coil disposed on a distal portion of the elongated core. The delivery guidewire having a first section having a generally uniform diameter and a second section having a tapering section. A distal portion of the second section of the delivery guidewire comprises a pigtail shape atraumatic tip which can remain in the left ventricle.

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Номер записи: 47
11-09-2014 дата публикации

EXCHANGE GUIDEWIRE

Номер: US20140257138A1
Автор: Gao Shengqiang, Hui Ferdinard
Принадлежит: THE CLEVELAND CLINIC FOUNDATION

A guidewire () includes a flexible elongated core () having a proximal end () and a distal end (). An anchor wire () has a distal end () connected to the distal end () of the core () and a distally located helical portion () that encircles the core. The guidewire () has an anchoring condition in which the helical portion () is expanded radially away from the core (). The guidewire () has an advancing condition in which the helical portion () is stretched longitudinally and contracted radially in response to tension on the anchor wire ().

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Номер записи: 48
22-06-2017 дата публикации

URETERAL STENTS

Номер: US20170173312A1
Автор: III Robert H., Loy Mitch, Orr, Reineke Richard, Walthall Jill, Wan Beatrice
Принадлежит:

Embodiments disclosed herein includes materials, devices, systems, and methods for utilizing a stent (), reducing movement of a stent within an ureter, securing the stent within the ureter, aiding in insertion or retrieval of a stent from the ureter, preventing irritation of the trigone, or combinations thereof. In one embodiment, a stent is disclosed including at least one retaining structure () positioned at least proximate a bladder configured to irritate a trigone less than a curled retaining structure. 1. An ureteral stent , comprising: a first end including a first retaining structure and one or more openings in fluid communication with the drainage lumen, the first end for positioning in a kidney; and', 'a second end spaced longitudinally from the first end, the second end including a second retaining structure and one or more openings in fluid communication with the drainage lumen, the second retaining structure including one or more of:', 'a sponge structure;', 'a flared structure that exhibits a diameter that is substantially the same as a diameter of the elongated member when the flared structure is compressed; or', 'a suture structure including at least one dissolvable suture that is dissolvable in a subject., 'an elongated member defining a drainage lumen, the elongated member including2. The ureteral stent of claim 1 , wherein the elongated member exhibits a length such that the first end can be positioned in the kidney when the second end is positioned within a ureter.3. The ureteral stent of claim 1 , wherein the elongated member exhibits a length such that the first end can be positioned in the kidney when the second end is positioned in a bladder.4. The ureteral stent of claim 1 , wherein the elongated member is configured to substantially prevent urine reflux.5. The ureteral stent of claim 1 , wherein the sponge structure includes at least one of a sponge or a material that absorbs moisture.6. The ureteral stent of claim 5 , wherein the sponge ...

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Номер записи: 49
08-07-2021 дата публикации

CATHETER WITH FLARING TIP

Номер: US20210205584A1
Автор: Simmons Brandon David
Принадлежит: BARD PERIPHERAL VASCULAR, INC.

In the present disclosure, embodiments of flaring tip microcatheters, methods of deploying flaring tip microcatheters, and embolization treatment methods are disclosed. The flaring tip microcatheter may include a hollow shaft having a shaft lumen defined therein, a core disposed within the shaft lumen, and a tip comprising at least two petals affixed to a distal end of the core, the at least two petals comprising at least two wires wherein the core is hollow and defines a core lumen. The at least two wires may be configured to pull the at least two petals to form a flared configuration of the tip. The flared configuration of the tip may allow for laminar flow of a therapeutic agent distally from the tip. 1. A flaring tip microcatheter , the microcatheter comprising:a hollow shaft having a shaft lumen defined therein;a core disposed within the shaft lumen, wherein the core is hollow and defines a core lumen;a tip comprising at least two petals affixed to a distal end of the core, the at least two petals comprising at least two wires, the at least two wires are configured to pull the at least two petals to form a flared configuration of the tip; and', 'the flared configuration of the tip allows for laminar flow of a therapeutic agent distally from the tip., 'wherein2. The microcatheter of claim 1 , wherein the at least two wires are disposed between the core and the shaft within the shaft lumen.3. The microcatheter of claim 1 , wherein each petal of the at least two petals comprise one wire.4. The microcatheter of claim 1 , further comprising a slide claim 1 , wherein the at least two wires are affixed to the slide claim 1 , and wherein the slide is configured to pull the at least two wires.5. The microcatheter of claim 1 , wherein the at least two petals overlap at a seam.6. The microcatheter of claim 1 , wherein the at least two wires extend straight along a longitudinal axis of the microcatheter.7. The microcatheter of claim 1 , wherein the at least two wires ...

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Номер записи: 50
15-07-2021 дата публикации

MEDICAL DEVICE DELIVERY MEMBER WITH FLEXIBLE STRETCH RESISTANT DISTAL PORTION

Номер: US20210213252A1
Автор: BLUMENSTYK David, LORENZO Juan, Montidoro Tyson, SOLAUN Daniel
Принадлежит: DePuy Synthes Products, Inc.

A delivery member is provided for delivering and deploying an intravascular medical device. The delivery member includes a flexible distal portion including a wound wire coil surrounded by a flexible sleeve and inhibited from extending lengthwise by a stretch resistant member positioned through the lumen of the coil. The delivery member can include hypotubes positioned on either side (distally and proximally) from the wound wire coil to which the stretch resistant member and the wound wire coil can be attached. The flexible sleeve can be fused to the stretch resistant member between windings of the wire coil. 1. A delivery member for delivering an implantable medical device to a target location of a body vessel , the delivery member comprising:a distal hypotube comprising a distal end shaped to receive the implantable medical device;a flexible tubular section affixed to a proximal end of the distal hypotube, the flexible tubular section comprising openings therethrough;a proximal hypotube affixed to a proximal end of the flexible tubular section;a flexible sleeve covering at least a majority of an outer surface of the flexible tubular section; anda stretch resistant tube comprising a distal portion affixed to the distal hypotube within a lumen of the distal hypotube, an intermediate portion fused through the openings of the flexible tubular section to the flexible sleeve, and a proximal portion affixed to the proximal hypotube within a lumen of the proximal hypotube.2. The delivery member of claim 1 , further comprising: a loop wire extended through an opening in the implantable medical device thereby engaging the engagement system to the implantable medical device and movable to retract from the opening in the implantable medical device to deploy the implantable medical device, and', 'a pull wire extended through the lumen of the proximal hypotube, extending through a lumen of the stretch resistant tube, extending through the lumen of the distal hypotube, engaged ...

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Номер записи: 51
18-09-2014 дата публикации

Medical device guidewire with a position sensor

Номер: US20140276226A1
Автор: Dan Seter, Lior Sobe, Nimrod Meller, Ran Sela
Принадлежит: MediGuide Ltd

A guidewire for a medical device is disclosed. In one embodiment, the guidewire includes a corewire having a proximal end portion and a distal end portion, an elongate shroud disposed about the corewire, the shroud having a distal end, and a plug coupled with the distal end portion of the corewire and the distal end of the shroud, the plug having a distal, non-traumatic tip portion, an interior between the corewire and the shroud being configured to receive a sensor.

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Номер записи: 52
18-09-2014 дата публикации

Catheter-based devices and methods for identifying specific anatomical landmarks of the human aortic valve

Номер: US20140276616A1
Автор: Derek Dee Deville, Kevin W. Smith, Korey Kline
Принадлежит: Syntheon Cardiology LLC

A valve-plane-defining catheter includes a hollow flexible sheath having a distal end and defining a distal opening, a guidewire assembly, and three radiopaque valve-nadir markers. The guidewire assembly has a guidewire slidably disposed in the flexible sheath and having a distal end, three wire arms each having a terminating end and a proximal end offset from the terminating end and attached to the distal end of the guidewire to dispose the three wire arms approximately 120 degrees from one another about a circle defined by the terminating end of the three wire arms. The three radiopaque valve-nadir markers disposed respectively at the terminating end of each of the three wire arms, each of the valve-nadir markers being sized to fit within the distal opening.

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Номер записи: 53
22-07-2021 дата публикации

MEDICAL GUIDEWIRE ASSEMBLY HAVING IDENTIFICATION DEVICE

Номер: US20210220620A1
Автор: Balkovec Christian, Urbanski John Paul
Принадлежит:

A medical guidewire assembly is movable through a guidewire introducer. A piercing stylet device extends from the medical guidewire assembly. The piercing stylet device is configured to puncture tissue of a patient in response to movement of the medical guidewire assembly through the guidewire introducer toward tissue. An identification device is mounted to the medical guidewire assembly. The identification device is spaced apart from the piercing stylet device. The identification device is configured to enhance the detectible visibility of the piercing stylet device. 1. An apparatus , comprising:a medical guidewire assembly being movable along an interior longitudinal channel of a guidewire introducer via an exit portal of the guidewire introducer, and in which the guidewire introducer and the medical guidewire assembly are each configured to be inserted into a confined space defined by a patient; anda piercing stylet device extending from a distal portion of the medical guidewire assembly, and the piercing stylet device being configured to physically cut tissue of the patient; andan identification device being mounted to the medical guidewire assembly, and the identification device being configured to enhance detectible visibility of the piercing stylet device by a medical imaging system.2. The apparatus of claim 1 , wherein:the identification device includes a radiopaque element configured to be detectable by a radiopaque sensor of the medical imaging system.3. The apparatus of claim 1 , wherein:the identification device includes an echogenic element configured to be detectable by an echogenic sensor of the medical imaging system.4. The apparatus of claim 1 , wherein: a radiopaque element configured to be detectable by a radiopaque sensor; and', 'an echogenic element configured to be detectable by an echogenic sensor; and', 'the radiopaque element is configured to attenuate the signals emitted by the medical imaging system so that the radiopaque element, in use, ...

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Номер записи: 54
14-07-2016 дата публикации

Medical guidewires for tortuous vessels

Номер: US20160199620A1
Автор: James Pokorney, Matthew F. Ogle
Принадлежит: Mivi Neuroscience Inc

Three groups of guidewire embodiments are described with particularly suitable structures for navigating circuitous vessels, especially blood vessels of the brain. Some of the guidewires have a hyperbolic taper that provides desired flexibility. In some embodiments, an integrated guide structure provides for extension in the blood vessel of a corewire to provide for extended reach of the guidewire. In further embodiments, the guidewire has a flexible tip that can be guided directly by the flow in the vessel.

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Номер записи: 55
12-07-2018 дата публикации

GUIDEWIRE WITH TACTILE FEEL

Номер: US20180193606A1
Автор: PATEL MAYUR kiran, STORBECK Gene T., Tang Sacha
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guidewire. The guidewire may include a core wire having a body region and a distal tip region. A distal tip member may be disposed along the distal tip region. The distal tip member may have a proximal end. A sleeve may be disposed along the body region. The sleeve may be disposed adjacent to the proximal end of the distal tip member and extending proximally therefrom. The sleeve may include a first member and a heat shrink member. The first member may have an uneven outer surface. 1. A guidewire , comprising:a core wire having a body region and a distal tip region;a distal tip member disposed along the distal tip region, the distal tip member having a proximal end;a sleeve disposed along the body region, the sleeve being disposed adjacent to the proximal end of the distal tip member and extending proximally therefrom;wherein the sleeve includes a first member and a heat shrink member; andwherein the first member has an uneven outer surface.2. The guidewire of claim 1 , wherein the core wire includes a nickel-titanium alloy.3. The guidewire of claim 1 , wherein the core wire includes stainless steel.4. The guidewire of claim 1 , wherein the first member includes a braid.5. The guidewire of claim 1 , wherein the first member includes a coil.6. The guidewire of claim 1 , wherein the first member includes a helically-oriented region.7. The guidewire of claim 1 , wherein the sleeve is designed to have a substantially constant outer surface prior to manufacturing the guidewire.8. The guidewire of claim 7 , wherein the heat shrink member is designed to shrink during manufacturing of the guidewire such that the sleeve has an uneven outer surface after manufacturing the guidewire.9. The guidewire of claim 1 , wherein the first member includes a polymer.10. The guidewire of claim 1 , wherein the first member includes a metal.11. The guidewire of claim 1 , ...

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Номер записи: 56
12-07-2018 дата публикации

GUIDEWIRE DEVICES HAVING SHAPEABLE TIPS AND BYPASS CUTS

Номер: US20180193607A1
Автор: Davis Clark C., Lippert John A., Snyder Edward J.
Принадлежит:

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section extends into the tube structure. The tube structure includes a plurality of bypass cuts formed tangentially within the tube structure to increase the flexibility of the tube structure and to reduce the tendency of resilient forces from the tube structure to disrupt a shaped distal tip of the guidewire device. 1. A guidewire device having a shapeable tip , the guidewire device comprising:a core having a proximal section and a distal section; and wherein the tube structure includes a cut pattern which forms a plurality of axially extending beams coupling a plurality of circumferentially extending rings,', 'wherein the cut pattern forms a single beam between each pair of adjacent rings within the second section, the beams in the second section forming a preferred bending plane,, 'a tube structure coupled to the core such that the distal section of the core passes into the tube structure, the tube structure having a first section and a second section distal to the first section,'}wherein at least a portion of the distal section of the core passing through the second section of the tube is a flat ribbon having a major plane lying substantially perpendicular to the preferred bending plane, andwherein a distal tip of the guidewire device is configured to be manually shapeable.2. The guidewire device of claim 1 , wherein the second section is between about 0.5 cm and 5 cm in length.3. The guidewire device of claim 1 , wherein the second section is between about 1 cm and 2 cm in length.4. The guidewire of claim 1 , wherein the beams between rings in the second section alternate in position from a first side of the tube structure to a second side of the tube structure claim 1 , the second side being opposite ...

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Номер записи: 57
29-07-2021 дата публикации

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

Номер: US20210228838A1
Автор: Vishal Gupta
Принадлежит: Anchor Balloon LLC

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

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Номер записи: 58
29-07-2021 дата публикации

Guidewire having enlarged, micro-fabricated distal section

Номер: US20210228845A1
Автор: Edward J. Snyder, John A. Lippert
Принадлежит: Scientia Vascular Inc

Disclosed is a guidewire having a core wire and an outer tube within which the distal section of the core is inserted. The outer diameter of the tube is greater than the outer diameter of the proximal section of the core wire. The guidewire also includes a proximal coil and a distal, radiopaque coil each disposed over the distal section of the core. A bushing coil is disposed over the proximal coil and distal coil. The proximal coil, distal coil, and bushing coil aid in filling the annular space between the core and the tube and thereby centering and aligning the core and tube.

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Номер записи: 59
19-07-2018 дата публикации

GUIDEWIRE WITH INTERNAL PRESSURE SENSOR

Номер: US20180199818A1
Автор: Belleville Claude
Принадлежит:

The present document describes a pressure guidewire. It comprises a shaft tube having a proximal section and a sensor housing having a distal end, the proximal section and the sensor housing being the continuity of the same shaft tube. A fiber optic pressure sensor is embedded in the sensor housing and comprises an optical fiber extending within the sensor housing, the sensor adapted to measure a pressure of a fluid which is substantially applied in an axis collinear with the longitudinal axis of the guidewire. A marker band, to help in localizing the pressure guidewire in a patient's vessels, is embedded inside the sensor housing and fixed to the optical fiber for holding the pressure sensor inside the sensor housing. 1. A pressure guidewire having a longitudinal axis comprising:a shaft tube having a proximal section and a sensor housing having a distal end, the proximal section and the sensor housing being the continuity of the same shaft tube;a fiber optic pressure sensor embedded in the sensor housing and comprising an optical fiber extending within the sensor housing, the sensor adapted to measure a pressure of a fluid which is substantially applied in an axis collinear with the longitudinal axis of the guidewire; anda marker band to help in localizing the pressure guidewire in a patient's vessels, the marker band being embedded inside the sensor housing and fixed to the optical fiber for holding the pressure sensor inside the sensor housing.2. The pressure guidewire of claim 1 , further comprising a tip portion extending distally relative to the sensor housing claim 1 , the tip portion having a proximal end attached to the distal end of the sensor housing claim 1 , the tip portion being the most distal portion of the pressure guidewire.3. The pressure guidewire of claim 1 , wherein the shaft tube comprises a proximal section claim 1 , the proximal section and the sensor housing being the continuity of the same shaft tube.4. The pressure guidewire of claim 3 , ...

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Номер записи: 60
19-07-2018 дата публикации

SYSTEM AND METHOD FOR DELIVERING A CATHETER

Номер: US20180200478A1
Автор: Johnson Kirk, Karg Dillon, LORENZO Juan
Принадлежит: DePuy Synthes Products, Inc.

Systems and methods for delivering a catheter to a location of interest in the vasculature, the method including selectively positioning a guidewire at the location, positioning a self-expanding sheath within a lumen of the catheter, advancing the catheter and the self-expanding sheath in tandem over the guidewire, and distally moving a distal end of the self-expanding sheath out from an inner lumen of the catheter thereby causing the self-expanding sheath to move from a collapsed state within the catheter to an expanded state outside the catheter. 1. A catheter delivery system , comprising:a guidewire;a catheter comprising a lumen, a distal end, and a proximal end;a self-expanding sheath slidably disposed in the lumen, the self-expanding sheath comprising a distal end and a proximal end, the self-expanding sheath being capable of moving from a collapsed state within the catheter to an expanded state outside the catheter during deployment with an outer diameter greater than an inner diameter of the catheter;wherein the self-expanding sheath and the catheter are advanceable in tandem over the guidewire such that as the distal end of the self-expanding sheath is moved distally relative to the catheter, the self-expanding sheath expands to the expanded state.2. The system of claim 1 , wherein in the collapsed state claim 1 , the outer diameter of the self-expanding sheath is substantially snug with the inner diameter of the catheter.3. The system of claim 1 , wherein the distal end of the self-expanding sheath comprises a tapered tip claim 1 , the distal end comprising an inner diameter substantially snug with the guidewire.4. The system of claim 3 , wherein at least one of the guidewire claim 3 , the inner diameter of the sheath claim 3 , the outer diameter of the sheath claim 3 , and the inner diameter of the catheter includes a lubricant.5. The system of claim 1 , wherein the self-expanding sheath comprises a radiopaque band proximal to the distal end.6. The system ...

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Номер записи: 61
06-08-2015 дата публикации

Intravascular Devices, Systems, and Methods Having a Core Wire With Embedded Conductors

Номер: US20150217090A1
Автор: Burkett David H.
Принадлежит:

Intravascular devices, systems, and methods are disclosed. In some instances, the intravascular device is a guide wire with electrical conductors embedded within a core wire. In some instances, the electrical conductors are coupled to conductive bands adjacent a proximal portion of the guide wire and a sensing element adjacent a distal portion of the guide wire. Methods of making, manufacturing, and/or assembling such intravascular devices and associated systems are also provided. 1. A sensing guide wire , comprising:a core wire having at least one electrical conductor embedded therein; anda sensing element electrically coupled to the at least one electrical conductor embedded in the core wire.2. The guide wire of claim 1 , wherein the sensing element includes a pressure sensor and/or a flow sensor.3. The guide wire of claim 1 , further comprising an insulating layer isolating the at least one electrical conductor from a main body of the core wire.4. The guide wire of claim 3 , wherein the main body of the core wire is formed of a conductive material.5. The guide wire of claim 4 , wherein the main body of the core wire is formed of at least one of 304V Stainless Steel claim 4 , Nitinol claim 4 , Nitinol-Cobalt alloy claim 4 , and MP35N.6. The guide wire of claim 4 , wherein the at least one electrical conductor is formed of at least one of copper claim 4 , silver claim 4 , gold claim 4 , and platinum.7. The guide wire of claim 1 , further comprising at least one connector coupled to the at least one electrical conductor adjacent a proximal portion of the core wire.8. The guide wire of claim 7 , wherein the sensing element is electrically coupled to the at least one electrical conductor adjacent a distal portion of the core wire.9. The guide wire of claim 8 , wherein the at least one connector comprises a conductive band.10. The guide wire of claim 8 , wherein the sensing element is secured to a housing coupled to the distal portion of the core wire.11. The guide ...

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Номер записи: 62
27-07-2017 дата публикации

DELIVERY CATHETER FOR AND METHOD OF DELIVERING AN IMPLANT, FOR EXAMPLE, BRONCHOSCOPICALLY IMPLANTING A MARKER IN A LUNG

Номер: US20170209666A1
Автор: Quigley Fergus
Принадлежит:

Systems and methods for treating a lung of a lung of a patient. One embodiment of a method comprises positioning a leadless marker in the lung of the patient relative to the target, and collecting position data of the marker. This method further comprises determining the location of the marker in an external reference frame outside the patient based on the collected position data, and providing an objective output in the external reference frame that is responsive to movement of the marker. The objective output is provided at a frequency (i.e., periodicity) that results in a clinically acceptable tracking error. In addition, the objective output can also be provided at least substantially contemporaneously with collecting the position data used to determine the location of the marker. 128-. (canceled)29. A method of treating a body , the method comprising: positioning a catheter in the lumen within the body,', 'moving a push wire having an integral retention device contained in the catheter toward a distal end of the catheter to engage the marker,', 'spring-loading the marker in the catheter, and', 'deploying the marker by moving the push wire toward the distal end of the catheter or by fixing the push wire in place and retracting the catheter toward a proximal end of the push wire;, 'deploying a marker into a lumen within a body, wherein the deploying includesdetermining a fixed relationship between the marker and a treatment target within the body;tracking at least one of position and motion of the marker during treatment;interrupting the treatment when the at least one of the position and the motion of the marker exceeds a predetermined offset value; andrepositioning the body to bring the at least one of the position and the motion of the marker below the offset value before continuing the treatment.30. The method of claim 29 , wherein positioning includes passing the catheter claim 29 , push wire claim 29 , and marker down a working channel of a bronchoscope a ...

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Номер записи: 63
26-07-2018 дата публикации

GUIDE WIRE AND MANUFACTURING METHOD OF GUIDE WIRE

Номер: US20180207407A1
Автор: TANIGAKI Nobuyuki
Принадлежит: TERUMO KABUSHIKI KAISHA

A guide wire has an elongated core portion, a resin coating layer including a resin material and covering a distal portion of the core portion, and a metallic tubular member that has a lumen into which the core portion is inserted, and that is disposed so as to be in contact with at least a portion of a proximal end of the resin coating layer. The tubular member is formed in a state where the lumen is reduced in diameter by cold forging, and at least a portion of an inner surface forming the lumen has a compressive bonding surface which is compressively bonded to an outer surface of the core portion. 1. A guide wire comprising:an elongated core portion;a resin coating layer that is made of a resin material, and that covers a distal portion of the core portion; anda metallic tubular member that has a lumen into which the core portion is inserted, and that is disposed so as to be in contact with at least a portion of a proximal end of the resin coating layer,wherein the tubular member is formed in a state where the lumen is reduced in diameter by cold forging, and at least a portion of an inner surface forming the lumen has a compressive bonding surface which is compressively bonded to an outer surface of the core portion.2. The guide wire according to claim 1 ,wherein the compressive bonding surface of the tubular member is formed over the entire inner surface of the tubular member.3. The guide wire according to claim 1 ,wherein the core portion has at least one engagement portion which engages with the tubular member, andwherein the tubular member has at least one engagement pairing portion which corresponds to and engages with the engagement portion.4. The guide wire according to claim 3 ,wherein the engagement portion is disposed in at least a portion of the outer surface of the core portion, and includes a concave portion which is recessed inward in a radial direction in a concave shape, andwherein the engagement pairing portion is disposed in at least a portion ...

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Номер записи: 64
05-08-2021 дата публикации

Apparatus and method for deploying medical device using steerable guidewire

Номер: US20210236778A1
Автор: Daniel H. Kim, Dong Suk Shin
Принадлежит: University of Texas System, Xcath Inc

Provided herein as systems, apparatus, and methods for the effective and minimally invasive deployment of medical devices or therapeutic agents using a steerable guidewire/catheter assembly. The steerable guidewire and/or catheter has a bendable distal portion comprising an ionic electroactive polymer actuator, which is allowed to deform, bend or expand from its original shape in at least one dimension.

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Номер записи: 65
02-07-2020 дата публикации

Intravascular devices, systems, and methods to address eye disorders

Номер: US20200206459A1
Автор: Michael Calhoun, Stephen Michael, Zachary Tegels
Принадлежит: JD Franco and Co LLC

A method may include accessing an artery in communication with an ophthalmic artery of a subject, and advancing a microcatheter along the accessed artery so as to align a distal end of the microcatheter with an ostium of the ophthalmic artery, wherein the microcatheter includes a lumen having a guidewire positioned therein. In addition, the method includes proximally withdrawing the guidewire relative to the microcatheter so as to enable a distal portion of the microcatheter to assume a curved relaxed configuration, and cannulating the ostium with the distal portion of the microcatheter when the distal portion is in the curved relaxed configuration.

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Номер записи: 66
02-07-2020 дата публикации

INTRAVASCULAR DEVICES, SYSTEMS, AND METHODS TO ADDRESS EYE DISORDERS

Номер: US20200206482A1
Автор: Calhoun Michael, MICHAEL Stephen, Tegels Zachary
Принадлежит: J.D. Franco & Co., LLC

A method may include accessing an artery in communication with an ophthalmic artery of a subject, and advancing a microcatheter along the accessed artery so as to align a distal end of the microcatheter with an ostium of the ophthalmic artery, wherein the microcatheter includes a lumen having a guidewire positioned therein. In addition, the method includes proximally withdrawing the guidewire relative to the microcatheter so as to enable a distal portion of the microcatheter to assume a curved relaxed configuration, and cannulating the ostium with the distal portion of the microcatheter when the distal portion is in the curved relaxed configuration. 1. A balloon catheter , comprising:a shaft extending between a proximal end and a distal end, the shaft including: an inner liner;', 'a metallic support middle layer; and', 'an outer layer; and, 'an inner shaft portion extending from the proximal end, through a balloon, to a distal tip, the inner shaft portion havingan outer shaft extending from the proximal end to the balloon.2. The balloon catheter of claim 1 , wherein the outer shaft portion has a first flexibility at the proximal end and a second flexibility at the distal end claim 1 , wherein the second flexibility is greater than the first flexibility.3. The balloon catheter of claim 1 , wherein the inner liner comprises a polymer claim 1 , the metallic support middle layer is a coil claim 1 , and the outer layer comprises a thermoplastic elastomer.4. The balloon catheter of claim 3 , wherein the inner liner includes etched polytetrafluoroethylene (PTFE) claim 3 , the coil includes spring temper 304v stainless steel claim 3 , and the thermoplastic elastomer includes PEBAX® 3533.5. The balloon catheter of claim 1 , wherein a portion of the inner shaft portion extends distally beyond a distal waist of the balloon to form the distal tip.6. The balloon catheter of claim 3 , further comprising at least one marker band provided radially between the inner shaft portion ...

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Номер записи: 67
20-08-2015 дата публикации

RADIAL AND TRANS-ENDOCARDIAL DELIVERY CATHETER

Номер: US20150231368A1
Автор: Altman Peter, Argentieri Julio, Comiso Scott, Hsueh Wai, Palmer Olin Jay, Ross James B., Vien Ken
Принадлежит: BioCardia, Inc.

A needle-injection catheter includes a catheter body having a distal end, a proximal end, a stiff proximal portion, a flexible distal portion, and a delivery lumen extending therethrough. In a first embodiment, a straight injection needle extends coaxially from a distal tip of the flexible portion of the catheter body, and a plurality of penetration limiting elements positioned circumferentially about a base of the straight injection needle and configured to fold radially inwardly against a shaft of the needle when constrained in a tubular lumen and to extend radially outwardly when unconstrained. In a second embodiment, a helical needle extends from the distal tip of the flexible portion of the catheter body. The helical needle has at least one helical delivery lumen connected to receive an injectable substance from the delivery lumen of the catheter body. 1. A method for introducing a needle injection catheter into a heart chamber from a radial artery , said method comprising:advancing a guide catheter through the radial artery and into the heart chamber;positioning the guide catheter to align a distal tip of the guide catheter with a target location on an endocardial wall of the heart chamber;advancing the needle-injection catheter through a lumen of the guide catheter so that a straight needle projecting coaxially emerges from a distal tip of the needle injection catheter and penetrates the endocardial wall to position an injection port at the tip of the needle in the myocardium, wherein a plurality of penetration limiting elements remain constrained within the guide catheter until the needle emerges from the distal tip at which point the elements self-deploy radially outwardly from a base of the needle to limit the penetration of the needle into the myocardium in order to reduce the risk of perforation of the endocardial wall.2. A method as in claim 1 , wherein positioning comprises rotating and/or axially translating a guide catheter having a pre-shaped ...

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Номер записи: 68
09-07-2020 дата публикации

Percutaneous access device with adjustable depth stop

Номер: US20200214727A1
Автор: Aaron K. Kirkemo, Anant SUBRAMANIAM, Ashish Jain, Biten K. Kathrani, Brandon W. Craft, Chad Schneider, Dipanka Medhi, Elizabeth A. Stokley, Erik E. Sperry, Jerry T. LONG, JR., Kenneth P. Reever, Ronald CIULLA, Salman Kapadia, Sebastian KOERNER, Subodh Morey, Sumit Malik, Timothy P. Harrah
Принадлежит: Boston Scientific Ltd Bermuda

A percutaneous nephrolithotomy (PCNL) needle may include a cannula including a shaft and a cannula hub coupled to a proximal end of the cannula shaft. A depth guide may be disposed on an outer surface of the cannula shaft. A stylet may be disposable within the cannula lumen and may include a tapered point at a distal end of the stylet and a stylet hub coupled to a proximal end of the stylet that is configured to be releasably securable to the cannula hub. An adjustable depth stop may be releasably securable to the cannula shaft at a desired position relative to the depth guide, the adjustable depth guide capable of being manipulated between an adjustment configuration in which the adjustable depth guide is moveable relative to the cannula shaft and a secured configuration in which the adjustable depth guide is secured relative to the cannula shaft.

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Номер записи: 69
17-08-2017 дата публикации

ROD SHAPED BODY AND MEDICAL DEVICE

Номер: US20170232158A1
Автор: Düring Klaus, PFEFFER JOACHIM GEORG
Принадлежит: MARVIS INTERVENTIONAL GMBH

The present invention relates to a medical device. In particular, the present invention concerns a medical device which can be detected by means of magnetic resonance imaging (MRI). 2. The medical device according to claim 1 , wherein the MRI marker is selected from the group consisting of ferromagnetic particles and paramagnetic particles and iron microparticles with particle sizes in the range of 1 μm to 150 μm.3. The medical device according to claim 1 , wherein the distance of the passive-negative MRI marker to the outer surface of the medical device is at least 0.1 mm.4. A medical device comprising:an elongate polymer body;one or more rod shaped bodies embedded in the elongate polymer body, wherein at least one of the rod shaped bodies comprises:one or more non-metallic filaments; anda non-ferromagnetic matrix material enclosing and/or agglutinating the filaments,wherein the rod shaped bodies are arranged in different positions with respect to the central longitudinal axis of the medical device, wherein rod shaped bodies positioned near the central axis of the medical device contain marker particles in the matrix material to form a passive-negative MRI marker for generating an artifact in a magnetic resonance imaging process and rod shaped bodies positioned more distant to the central longitudinal axis of the medical device contain no marker particles; andwherein the medical device is a guidewire, mandrel, or stylet,wherein the medical device has a maximum outer diameter of 0.97 mm and the distance of the passive-negative MRI marker to the outer surface of the medical device is at least 0.1 mm.5. The medical device according to claim 4 , wherein the MRI marker is selected from the group consisting of ferromagnetic and paramagnetic particles and iron microparticles with particle sizes in the range of 1 μm to 150 μm.6. The medical device according to claim 4 , wherein the one or more non-metallic filaments comprise glass fibers.8. The medical device according to ...

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Номер записи: 70
16-07-2020 дата публикации

GUIDEWIRE WITH CORE CENTERING MECHANISM

Номер: US20200222672A1
Автор: Davis Clark C., Snyder Edward J., Turnlund Todd H.
Принадлежит:

The present disclosure relates to guidewire devices with an outer tube and a core. The distal section of the core extends into and is surrounded by the outer tube. One or more centering mechanisms are also disposed within the outer tube and are arranged to fill a portion of the annular space between the core and the inner surface of the tube. The one or more centering mechanisms thereby assist in keeping the distal section of the core axially aligned within the tube, which enables effective control of the device and minimizes undesirable whip movements of the guidewire. 1. An intravascular device , comprising:a core having a proximal section and a distal section;an outer tube coupled to the core such that the distal section of the core passes into and is encompassed by the outer tube, the outer tube and the core defining an annular space between an inner surface of the outer tube and an outer surface of the distal section of the core; andone or more centering mechanisms positioned within at least a portion of the annular space,wherein the one or more centering mechanisms are configured to limit movement of the core out of a radially centered position within the outer tube, andwherein the one or more centering mechanisms extend at least 15% of a length of the outer tube.2. The device of claim 1 , further comprising a radiopaque marker coil claim 1 , the one or more centering mechanisms being separate from the marker coil.3. The device of claim 2 , wherein the one or more centering mechanisms includes a first centering coil claim 2 , wherein at least a portion of the first centering coil extends over at least a portion of the marker coil.4. The device of claim 3 , wherein the first centering coil is less radiopaque than the marker coil.5. The device of claim 3 , wherein the first centering coil adjoins the core at a proximal coil joint claim 3 , and wherein the proximal coil joint of the first centering coil is located at a point where the diameter of the core is ...

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Номер записи: 71
03-09-2015 дата публикации

SYSTEMS FOR LINEAR MAPPING OF LUMENS

Номер: US20150245882A1
Автор: SUBRAMANIYAN Raghavan, VENKATRAGHAVAN Vikram
Принадлежит: Angiometrix Corporation

Systems for linear mapping of lumens are described which utilizes methods to create a linearized view of a lumen using multiple imaged frames. In reality a lumen has a trajectory in 3-D, but only a 2-D projected view is available for viewing. The linearized view unravels this 3-D trajectory thus creating a linearized map for every point on the lumen trajectory as seen on the 2-D display. In one mode of the invention, the trajectory is represented as a linearized display along 1 dimension. This linearized view is also combined with lumen measurement data and the result is displayed concurrently on a single image. In another mode of the invention, the position of a treatment device is displayed on the linearized map in real time. In a further extension of this mode, the profile of the lumen dimension is also displayed on this linearized map. 1. A method for generating a linear map from multiple two-dimensional images of a body lumen , comprising:positioning an elongate instrument having one or more markers within the body lumen to be mapped;imaging the elongate instrument and the one or more markers along the elongate instrument within the body lumen;tracking the one or more markers across multiple imaged frames;matching predetermined reference points along the elongate instrument between the multiple imaged frames; and,creating a linear map of the body lumen from the multiple imaged frames.2. The method of further comprising enhancing an image for each pixel of the elongate instrument in the multiple imaged frames after imaging the elongate instrument and the one or more markers.3. The method of wherein imaging the elongate instrument comprises moving the elongate instrument through the body lumen while imaging.4. The method of wherein the one or more markers comprise a subset of the region of interest in any single frame.5. The method of further comprising compensating for a motion of the one or more markers due to movement of the body lumen.6. The method of wherein ...

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Номер записи: 72
01-08-2019 дата публикации

RADIOPAQUE BALLOON CATHETER AND GUIDEWIRE TO FACILITATE ALIGNMENT

Номер: US20190232024A1
Автор: CADILLO Anne Hammond, Stapleton Corey E.
Принадлежит:

An apparatus includes a catheter having a balloon including at least one first radiopaque marking. A guidewire guides the balloon to the treatment area, and includes at least one second radiopaque marking adapted for corresponding to the at least one first radiopaque marking of the balloon when positioned at the treatment area. Related aspects and methods are disclosed. 123-. (canceled)24. An apparatus for treating a treatment area in a vasculature using a first catheter having a first balloon with one or more balloon radiopaque markings , comprising:a guidewire having a plurality of radiopaque guidewire markings, including a first radiopaque marking having a first length and a second radiopaque marking having a second length different from the first length.25. The apparatus of claim 24 , wherein the plurality of radiopaque guidewire markings comprise a first pair of central guidewire radiopaque markings including the first radiopaque marking and a second pair of guidewire radiopaque markings including the second radiopaque marking.26. The apparatus of claim 25 , further including a centered radiopaque marking between the first pair of central radiopaque markings.27. The apparatus of claim 26 , wherein the guidewire includes a third pair of guidewire radiopaque markings claim 26 , one of the third pair of guidewire radiopaque markings being closer to one of the second pair of guidewire radiopaque markings than one of the first pair of guidewire radiopaque markings.28. An apparatus for treating a treatment area in a vasculature using either a first catheter having a first balloon with one or more first balloon radiopaque markings and a second catheter having a second balloon with one or more second balloon radiopaque markings claim 26 , comprising:a guidewire having a plurality of pairs of guidewire radiopaque markings, including a first pair of guidewire radiopaque markings corresponding to the first balloon radiopaque markings and a second pair of guidewire ...

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Номер записи: 73
23-07-2020 дата публикации

INTRODUCER ASSEMBLY PARTICULARLY FOR BALLOON CATHETERS

Номер: US20200230371A1
Автор: HANSEN Palle Munk, Klausen Kasper, Lundsteen Nicholas Gulmann
Принадлежит: Cook Medical Technologies LLC

An introducer assembly () includes a catheter () having a proximal end (), a distal end () extending to a distal tip of the introducer assembly, and an outer catheter wall. The catheter () includes a medical device holding portion () proximate the distal end, a guide wire lumen () extending between the proximal and distal ends, and a side opening () extending through the outer wall to the guide wire lumen. The side opening () and the guide wire lumen () are simultaneously open and the guide wire lumen and side opening are able to receive a guide wire therethrough. The catheter () is flexible at least in the location of the side opening, such that a guide wire () fed from the distal end () can pass through to the proximal end () when the catheter is substantially straight and can pass from the distal end through the side opening () when the catheter is curved at the location of the side opening. The catheter () also includes a plurality of one stiffening mandrel lumens () extending from the proximal end () and a plurality of stiffening mandrels sized to fit within the stiffening mandrel lumens and in some forms able to slide therewithin and in other forms enclosed within the stiffening mandrel lumens. The mandrels have different lengths disposed along the length of the catheter and can be of substantially uniform diameter. 1. An introducer assembly including:a catheter having a proximal end disposed at a proximal location of the introducer assembly, a distal end extending to a distal tip of the introducer assembly, an outer catheter wall, and having a longitudinal dimension; the catheter including:(i) a medical device holding portion proximate the distal end thereof,(ii) a guide wire lumen extending between the proximal and distal ends, and(iii) an elongate side opening extending through the outer wall to the guide wire lumen, the side opening having a length, a width and being elongate in the longitudinal dimension of the catheter;wherein the side opening and the ...

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Номер записи: 74
01-09-2016 дата публикации

Guidewire with integral radiopaque markers

Номер: US20160250450A1
Автор: Mark Stiger, Richard Thomas
Принадлежит: Medtronic Vascular Inc

Embodiments hereof relate to a guidewire formed from an elongated shaft, at least a portion of the shaft having an outer layer, a plurality of channels formed through the outer layer, and an inner core. The outer layer is formed from a material non susceptible to erosion by an erosion agent and the inner core is formed from a radiopaque material susceptible to erosion by the erosion agent. When exposed to the erosion agent, core material adjacent to the channels is removed to form a pattern of integral radiopaque segments or markers with a plurality of voids therebetween. By controlling the location of channels and the rate of erosion of the core material, the pattern of integral radiopaque segments and voids allow for in situ measurement when viewed under fluoroscopy.

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Номер записи: 75
08-09-2016 дата публикации

TWISTED RIBBON WIRE GUIDEWIRE COIL

Номер: US20160256666A1
Автор: Brown Daniel G.
Принадлежит: Abbott Cardiovascular Systems Inc.

A medical guidewire having distal tip coil that includes a twisted ribbon wire construction. The distal tip coil is mounted to the distal end of the distal core section of the guidewire. The coil is made from a flat ribbon wire with a polygonal, preferably rectangular, cross-section that is twisted along the length of the wire. The twisted, flat ribbon wire creates a tip coil that has a roughened, undulating surface at the outer circumference that, whether coated or bare, is perceptible to the physician or cardiologist when pushing or torquing the guidewire in an interventional procedure. 120.-. (canceled)21. An intraluminal medical guidewire , comprising:a solid, cylindrical core having a distal core section with a distal end and a proximal end, the proximal end transitioning to a proximal core section;a distal coil mounted to the distal core section, the distal coil having:a single strand of a coil wire with a rectangular cross-sectional shape with a height and a width, wherein the rectangular cross-sectional shape rotates 360° about a longitudinal axis of the coil wire and along a length of the coil wire to create a continuous twist;wherein the coil wire includes a plurality of turns forming a helix having a constant outside diameter;a proximal coil having a coil wire mounted to the distal core section proximal of the distal coil; andan intermediate coil having a coil wire mounted to the distal core section in between the distal coil and the proximal coil.22. The intraluminal medical guidewire of claim 21 , wherein a polymer coating covers the distal coil.23. An intraluminal medical guidewire of claim 21 , wherein the intermediate coil include a single strand of a coil of wire having a rectangular cross-sectional shape.24. An intraluminal medical guidewire of claim 23 , wherein the rectangular cross-sectional shape of the intermediate coil is rotated 360° about a longitudinal axis of the intermediate coil wire and along a length of the intermediate coil wire to ...

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Номер записи: 76
30-07-2020 дата публикации

GUIDE WIRE

Номер: US20200238054A1
Автор: TSUGE Kenta
Принадлежит: ASAHI INTECC CO., LTD.

A guide wire of the present disclosure includes a core shaft having a distal end portion decreasing in diameter, a coil body wound to cover the distal end portion, and a distal end fixing portion fixing the core shaft and the coil body to each other. The distal end portion includes a small diameter portion, a large diameter portion, and a tapered portion between the small diameter portion and the large diameter portion. The core shaft and the coil body are fixed at a portion excluding the tapered portion. A first bending rigidity FR1 of the large diameter portion, a second bending rigidity FR2 of the small diameter portion, and a length L of the tapered portion satisfy the following expressions (1) and (2). In the following expressions (1) and (2), the unit of L is mm (millimeter). 2. The guide wire according to claim 1 , wherein a length of the small diameter portion in the axial direction of the core shaft is between 3 mm and 15 mm.3. The guide wire according to claim 1 , wherein a section shape of the small diameter portion orthogonal to an axial direction of the core shaft has a flat shape.4. The guide wire according to claim 1 , further comprising an inner coil body that is as a multiple spiral coil claim 1 , and inside the coil body so as to cover the core shaft claim 1 , whereinthe core shaft and the inner coil body are fixed at a portion excluding the tapered portion, the portion being on the core shaft further in a proximal end direction than the tapered portion and at the distal end fixing portion.5. The guide wire according to claim 4 , wherein the core shaft includes a core shaft main body and a connection portion between the core shaft main body and the large diameter portion claim 4 , and the core shaft and the inner coil body are fixed at the connection portion.6. The guide wire according to claim 1 , wherein the core shaft includes a core shaft main body and a connection portion between the core shaft main body and the large diameter portion claim 1 ...

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Номер записи: 77
30-07-2020 дата публикации

GUIDE WIRE

Номер: US20200238055A1
Автор: ICHIKAWA Tomoki, TSUGE Kenta
Принадлежит: ASAHI INTECC CO., LTD.

A guide wire includes a core shaft having a distal end portion stepwisely decreasing in diameter, an inner coil body covering at least a part of an outer periphery of the distal end portion, an outer coil body covering an outer periphery of the inner coil body, and a distal end fixing portion that fixes distal ends of the core shaft. The distal end portion includes a small diameter portion, a large diameter portion inside the inner coil body and the outer coil body further in the proximal end direction than the small diameter portion and having a larger diameter than that of the small diameter portion, and a tapered portion that increases in diameter from the small diameter portion toward the large diameter portion. A radiopaque marker is on an outer peripheral surface of the tapered portion. A gap is between the radiopaque marker and the inner coil body. 1. A guide wire , comprising:a core shaft that includes a distal end portion having a stepwisely decreasing diameter toward a distal end direction;an inner coil body wound to cover at least a part of an outer periphery of the distal end portion having the decreased diameter;an outer coil body wound to cover at least an outer periphery of the inner coil body; a small diameter portion adjacent to the distal end fixing portion,', 'a large diameter portion inside the inner coil body and the outer coil body further in a proximal end direction than the small diameter portion, the large diameter portion having a larger diameter than the small diameter portion, and', 'a tapered portion between the small diameter portion and the large diameter portion, the tapered portion being continuous with the small diameter portion and the large diameter portion and increases in diameter from the small diameter portion toward the large diameter portion;, 'a distal end fixing portion that fixes the distal end of the core shaft, a distal end of the inner coil body, and a distal end of the outer coil body to one another, wherein the ...

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Номер записи: 78
07-10-2021 дата публикации

Digestive tract hemorrhage control tube (Li - Van Thiel Tube)

Номер: US20210308429A1
Автор: Li Shilun David
Принадлежит:

This medical device (Li-VanThiel tube) is designed to add 21st century technologies to a 20th century device in order to ease application and increase safety. The current Shengstaken-Blakemore tube is very difficult to use and dangerous to deploy. The Li-VanThiel tube utilizes guided tube insertion, inflates by using a pressure regulated pre-charged air canister, It has a smaller pre-deployment diameter and a variable stiffness tube feature to overcome the short comings of the old design.

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Номер записи: 79
14-09-2017 дата публикации

CATHETER HOLDER AND CATHETER SET

Номер: US20170259031A1
Автор: Sakaguchi Yuuki
Принадлежит: TERUMO KABUSHIKI KAISHA

A catheter holder includes an attachment section configured to be attachable to a holder tube that accommodates at least a portion of a sheath of an image diagnosis catheter in a wound state, a support section extending from the attachment section in a direction away from the wound holder tube, and a fixing section provided on a second end side of the support section, which is opposite to a first end side of the support section on which the attachment section is provided, and configured to fix a unit connector and a hub of the image diagnosis catheter to hold the outer tube, which is exposed from an opening portion of the holder tube, in a linear shape to be fixed in position. 1. A catheter holder used to hold a catheter in a predetermined state , the catheter including a sheath configured to be inserted into a body cavity of a living body , an outer tube provided on a base end side of the sheath , an inner shaft inserted into the outer tube to be movable back and forth , a connector part provided on a base end side of the outer tube and configured to accommodate the inner shaft therein , and a hub provided on a base end side of the inner shaft , wherein the catheter holder comprises:an attachment section configured to be attachable to a holder tube that accommodates at least a portion of the sheath while said holder tube is in a wound state;a support section formed to extend from the attachment section in a direction away from the wound holder tube; anda fixing section provided on a second end side of the support section, which is opposite to a first end side of the support section on which the attachment section is provided, the fixing section being configured to hold the outer tube in a linear shape at a fixed position relative to the catheter holder by fixing the connector part, the hub, or both, while the outer tube is exposed from an opening portion of the holder tube.2. The catheter holder according to claim 1 , wherein the fixing section holds the outer tube ...

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Номер записи: 80
14-09-2017 дата публикации

STEERABLE GUIDEWIRE AND METHOD OF USE

Номер: US20170259041A1
Автор: Lenker Jay A.
Принадлежит: Indian Wells Medical, Inc.

This invention is a transvascularly placed steerable guidewire, further including internal steerability and the ability to articulate in a direction at right angles to its longitudinal axis at or near its distal end. The steerable guidewire is generally fabricated from stainless steel and includes an outer tube, an inner tube, hub structures, and a distal articulating region. The steerable guidewire can be advanced through a body lumen in its straight configuration and then be selectively articulated or curved to permit negotiation of tortuous curvature. The steerable guidewire hub can be removed to permit advancement of catheters over its proximal end followed by re-attachment of the hub to permit deflection of the distal end of the steerable guidewire. Removal of the hub can result in a limp guidewire or maintenance of a forced curvature of the distal end of the guidewire. 1. An apparatus adapted for steering a distal end of a guidewire configured for advancement into a mammalian body , the apparatus comprising:an inner tube having a proximal end, a distal end, and a lumen within the inner tube that extends substantially the length of the inner tube;an outer tube having a proximal end, a distal end, a lumen within the outer tube that extends substantially the length of the outer tube, said outer tube comprising a bendable region defined by a plurality of substantially laterally oriented slots extending part way into the outer tube but not completely transecting the outer tube;wherein one or more longitudinal slits in the inner tube divide the inner tube into one or more longitudinally extending control rods, the one or more control rods being separated from each other within a region of the laterally oriented slots in the outer tube, the one or more control rods of the inner tube being affixed to the outer tube distal to the region of the laterally oriented slots in the outer tube;a hub affixed to the proximal end of the inner tube and comprising an internal lumen ...

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Номер записи: 81
29-09-2016 дата публикации

METHODS AND DEVICES FOR DELIVERING DRUGS USING DRUG-DELIVERY OR DRUG-COATED GUIDEWIRES

Номер: US20160279392A1
Автор: Senn Andrew, Sorensen Erik
Принадлежит:

The present invention relates to a method of delivering drugs having e.g., anti-proliferative activity in the vascular, preferably, the cardiovascular, system locally or systematically using an at least partially drug-coated guidewire. The drug-coated guidewire, particularly an expansion member or portion thereof, is brought into contact with the target tissue or in circulation and the drugs are quickly released into the area surrounding the device in a short time after the contact step. Once the therapeutic drugs are released, they are quickly and effectively absorbed by the surrounding cells or circulation. 1. A guidewire , comprising:a) a core member extending along a longitudinal axis from a proximal core member portion to a distal core member end;b) a distal atraumatic tip connected to the distal core member end;c) a first coil extending from a first coil proximal end to a first coil distal end, wherein the first coil distal end is affixed to the core member; andd) a tubular member supported on the core member and extending from a tubular member proximal portion to a tubular member distal end, wherein the tubular member distal end is connected to the first coil proximal end, and wherein the first coil proximal end has a first outer diameter when in an unexpanded state,e) wherein torsional manipulation of the tubular member proximal portion in a first directed about the longitudinal axis of the core member causes the first coil to unwind from the unexpanded state having the first outer diameter to an expanded state having a second outer diameter, the second diameter being greater than the first diameter, andf) wherein torsional manipulation of the tubular member in a second direction, opposite the first direction, causes the first coil to rewind from the expanded state having the second outer diameter to a third diameter less than the second diameter.2. The guidewire of wherein the core member is a core wire.3. The guidewire of wherein the core member is an ...

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Номер записи: 82
27-08-2020 дата публикации

Intravascular Treatment Site Access

Номер: US20200269012A1
Автор: Joseph A. Gulachenski, Mayank GOYAL, Michelle Tran, Tetsu Sumida
Принадлежит: MicroVention Inc

The embodiments presented herein relate to concepts designed to eliminate the gap between a catheter and guide wire that can otherwise contribute to a catheter getting stuck within the vasculature.

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Номер записи: 83
12-10-2017 дата публикации

GUIDEWIRE

Номер: US20170291013A1
Автор: Pereira Peter J., Walak Steven E.
Принадлежит:

A guidewire includes an elongate core member having an intermediate segment, a distal segment and a proximal segment, a distal shoulder between the intermediate segment and the distal segment and a proximal shoulder between the intermediate segment and the proximal segment. A coil having a proximal end and a distal end is disposed about at least a portion of the distal segment of the elongate core member and disposed adjacent to the distal shoulder. A distal tip comprising a polymer material is disposed adjacent to the distal end of the coil and a proximal polymer member, the proximal polymer member disposed adjacent to the proximal shoulder. At least the intermediate segment and the coil have a diameter that is substantially the same. 1. A guidewire comprising:an elongate core member having an intermediate segment, a distal segment and a proximal segment, a distal shoulder between the intermediate segment and the distal segment and a proximal shoulder between the intermediate segment and the proximal segment;a coil having a proximal end and a distal end disposed about at least a portion of the distal segment of the elongate core member and disposed adjacent to the distal shoulder;a distal tip comprising a polymer material, the distal tip disposed adjacent to the distal end of the coil; anda proximal polymer member, the proximal polymer member disposed adjacent to the proximal shoulder; andwherein at least the intermediate segment and the coil have a diameter that is substantially the same.2. The guidewire of wherein the elongate core member comprises stainless steel.3. The guidewire of wherein the elongate core member comprises a nickel-titanium alloy.4. The guidewire of wherein the coil comprises a nickel-titanium alloy.5. The guidewire of wherein the coil comprises stainless steel.6. The guidewire of wherein the coil is a flat wire coil.7. The guidewire of wherein the distal tip further comprises a coating of a hydrophilic polymer material.8. The guidewire of ...

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Номер записи: 84
03-09-2020 дата публикации

CATHETER

Номер: US20200276413A1
Автор: KATSURADA Takeharu, OGIDO Moritaka
Принадлежит: ASAHI INTECC CO., LTD.

A catheter comprises a catheter body and a distal tip joined to a distal end of the catheter body and made of a resin including tungsten powder, wherein the distal tip includes a distal region and a proximal region disposed in a proximal side of the distal region, and a hardness of the distal region is higher than a hardness of the proximal region. 1. A catheter comprising:a main body; anda distal portion joined to a distal end of the main body, and made of a resin including a metal or a metal compound, whereinthe distal portion includes a distal region and a proximal region disposed on a proximal side of the distal region, anda hardness of the distal region is higher than a hardness of the proximal region.2. The catheter according to claim 1 , whereina surface roughness of the distal region is greater than a surface roughness of the proximal region.3. The catheter according to claim 1 , whereina degree of exposure of the metal or the metal compound on an outer surface of the distal region is higher than a degree of exposure of the metal or the metal compound on an outer surface of the proximal region.4. The catheter according to claim 1 , whereinthe metal or the metal compound includes radiopaque metal.5. The catheter according to claim 2 , whereinthe metal or the metal compound includes radiopaque metal.6. The catheter according to claim 3 , whereinthe metal or the metal compound includes radiopaque metal.7. The catheter according to claim 1 , whereinthe metal or the metal compound included in the resin forming the distal portion is included only in the distal region of the distal portion.8. The catheter according to claim 1 , whereinthe metal or the metal compound included in the resin forming the distal portion is included in both the distal region and the proximal region of the distal portion.9. The catheter according to claim 8 , whereinan amount per unit volume of the metal or the metal compound in the distal region is greater than an amount per unit volume ...

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Номер записи: 85
20-10-2016 дата публикации

INTRAVASCULAR DEVICES, SYSTEMS, AND METHODS HAVING A POLYMER JACKET FORMED AROUND COMMUNICATION LINES WRAPPED AROUND A CORE MEMBER

Номер: US20160303354A1
Автор: BURKETT David, Henderson Eric
Принадлежит:

Intravascular devices, systems, and methods are disclosed. In some instances, the intravascular device is a guide wire having a polymer jacket applied over communication lines and a core member, where the communication lines have been wrapped around the core member. For example, in some implementations a sensing guide wire includes a proximal portion and a distal portion, the distal portion including: a core member; a plurality of communication lines wrapped around the core member; a polymer jacket formed around the core member and the plurality of communication lines; and a sensing element positioned distal of the polymer jacket and communicatively coupled to the plurality of communication lines. Methods of making, manufacturing, and/or assembling such intravascular devices and associated systems are also provided. 1. A sensing guide wire , comprising: a core member;', 'a plurality of communication lines extending along the core member;', 'a polymer jacket formed around the core member and the plurality of communication lines; and', 'a sensing element positioned distal of the polymer jacket and communicatively coupled to the plurality of communication lines., 'a proximal portion and a distal portion, the distal portion including2. The sensing guide wire of claim 1 , wherein the sensing element includes at least one of a pressure sensor claim 1 , a flow sensor claim 1 , or an ultrasound transducer.3. The sensing guide wire of claim 1 , wherein the plurality of communication lines extend linearly along the core member.4. The sensing guide wire of claim 1 , wherein the plurality of communication lines are wrapped around the core member.5. The sensing guide wire of claim 4 , wherein the plurality of communication lines includes a plurality of electrical conductors.6. The sensing guide wire of claim 5 , wherein the plurality of electrical conductors have a diameter of 40 AWG or smaller.7. The sensing guide wire of claim 6 , wherein the plurality of electrical conductors ...

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Номер записи: 86
18-10-2018 дата публикации

ACTIVE MEDICAL DEVICE WITH ATTACHMENT FEATURES

Номер: US20180296824A1
Автор: Cawthra, De Kock Andrew L., FOSTER DANIEL J., FUHS CHRISTOPHER ALAN, Gilkerson James O., GUNDALE BENJAMIN PHILIP, Hall Peter, JR. James K., Liu Lili, Pepin Henry J., Reddy G. Shantanu
Принадлежит: Cardiac Pacemakers, Inc.

Implantable leads of a cardiac stimulus system are disclosed, as well as methods for implanting leads of a cardiac stimulus system. The lead may be comprised of a proximal portion having a coupler for coupling to an implantable pulse generator, an intermediate portion comprising a plurality of electrodes disposed thereon, and a distal portion. The intermediate portion may have a first diameter and the distal portion may have a second diameter. The distal portion may also have an attachment feature for attaching to a lead pulling tool for delivery to an ITV and an intercostal vein. Methods may include pulling a lead from a first position to a second position within the vasculature, exiting the vasculature at the second location, and attaching a portion of the lead that exits the vasculature to an electrode or implantable device for use with the lead. 1. An implantable lead for use with a cardiac stimulation device , the lead comprising a body having a proximal end having a first coupler for coupling to an implantable pulse generator , an intermediate portion having at least one conductor therethrough , and a distal portion of the lead having an attachment feature adapted to electrically couple the conductor to an electrode having a second coupler for securing to the attachment feature.2. The lead of wherein the intermediate portion has a first outer diameter and the distal portion has a second outer diameter claim 1 , the second outer diameter being less than the first outer diameter.3. The lead of wherein the intermediate portion has a plurality of electrodes thereon.4. The lead of wherein the attachment feature includes a threaded portion.5. The lead of wherein the attachment feature includes a hole configured to match with a fastener.6. The lead of wherein the attachment feature includes a first ridge portion configured to match with a second ridge portion.7. The lead of wherein the distal portion of the lead has a portion of at least four centimeters length with ...

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Номер записи: 87
27-10-2016 дата публикации

NON-METALLIC GUIDE WIRE

Номер: US20160310706A1
Автор: Fleischhacker Mark G.
Принадлежит:

A guide wire having a non-metallic, non-woven core wire is disclosed. Monofilar, polymeric fibers of multifilar helically-wound non-metallic fibers are preferred core wire materials. The guide wire optionally includes further coatings and other materials on the core wire. In one embodiment, a non-metallic distal coil wire is disclosed. The guide wire of this invention is particularly useable for magnetic resonance imaging applications. 1. A core wire configured for use in a guide wire , the core wire comprising:a) an axial length extending from a proximal core wire segment to a distal core wire segment,b) wherein the core wire comprises carbon or glass fibers held together by a binder resin, andc) wherein the distal core wire segment is provided with a series of radial cuts or etches, each cut or etch having a depth extending part-way through a thickness of the distal core wire segment.2. The core wire of wherein the distal core segment has a reduced diameter perpendicular to the axial length claim 1 , the reduced diameter being less than a proximal diameter of the proximal core wire segment.3. The core wire of wherein the distal core wire segment is characterized as having been centerless ground to a reduced diameter that is less than a proximal diameter of the proximal core wire segment.4. The core wire of wherein a polymeric outer coating is disposed over at least the distal core wire segment.5. The core wire of wherein the polymeric outer coating is disposed over the core wire so that a diameter thereof perpendicular to the axial length is substantially uniform from a proximal end of the proximal core wire segment to a distal end of the distal core wire segment.6. The core wire of wherein the polymeric outer coating is selected from the group consisting of polyetherimide (PEBAX) claim 4 , polyurethane claim 4 , nylon claim 4 , and polytetrafluoroethylene (PTFE).7. The core wire of wherein the binder resin is polyetheretherketone (PEEK).8. The core wire of ...

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Номер записи: 88
26-10-2017 дата публикации

PERCUTANEOUS ACCESS DEVICE WITH ADJUSTABLE DEPTH STOP

Номер: US20170303940A1
Автор: CIULLA Ronald, CRAFT Brandon W., Harrah Timothy P., Jain Ashish, JR. JERRY T., Kapadia Salman, KATHRANI BITEN K., KIRKEMO AARON K., KOERNER Sebastian, Long, Malik Sumit, MEDHI DIPANKA, MOREY Subodh, REEVER Kenneth P., Schneider Chad, SPERRY ERIK E., STOKLEY Elizabeth A., SUBRAMANIAM ANANT
Принадлежит:

A percutaneous nephrolithotomy (PCNL) needle may include a cannula including a shaft and a cannula hub coupled to a proximal end of the cannula shaft. A depth guide may be disposed on an outer surface of the cannula shaft. A stylet may be disposable within the cannula lumen and may include a tapered point at a distal end of the stylet and a stylet hub coupled to a proximal end of the stylet that is configured to be releasably securable to the cannula hub. An adjustable depth stop may be releasably securable to the cannula shaft at a desired position relative to the depth guide, the adjustable depth guide capable of being manipulated between an adjustment configuration in which the adjustable depth guide is moveable relative to the cannula shaft and a secured configuration in which the adjustable depth guide is secured relative to the cannula shaft. 1. A percutaneous nephrolithotomy (PCNL) needle , comprising:a cannula including a shaft defining a cannula lumen extending through the shaft and a cannula hub coupled to a proximal end of the cannula;a depth guide disposed on an outer surface of the cannula shaft, the depth guide configured to provide an indication of insertion depth;a stylet disposable within the cannula lumen, the stylet including a tapered point at a distal end of the stylet and a stylet hub coupled to a proximal end of the stylet, the stylet hub configured to be releasably securable to the cannula hub; andan adjustable depth stop releasably securable to the cannula shaft at a desired position relative to the depth guide, the adjustable depth guide capable of being manipulated between an adjustment configuration in which the adjustable depth guide is moveable relative to the cannula shaft and a secured configuration in which the adjustable depth guide is secured relative to the cannula shaft.2. The PCNL needle of claim 1 , further comprising a first alignment marker disposed on the cannula hub and a second alignment marker disposed on the stylet hub ...

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Номер записи: 89
03-11-2016 дата публикации

IMAGING METHOD OF A ZONE OF A PATIENT'S BODY SUPERPOSING DISTANCE MARKING

Номер: US20160317105A1
Автор: Bismuth Vincent Jonas, RAMUS LILIANE, Riddell Cyril, Vaillant Regis
Принадлежит:

This invention relates to an imaging method of a zone of a patient's body, comprising: imaging said zone including an object of interest, superposing at least one graphical marking with regular and known spacing to said object of interest to make a combined image of said zone, displaying said combined image, wherein said marking orientation is similar to the orientation of said object of interest on said combined image. 1. An method for imaging a zone of a patient's body , comprising:imaging said zone including an object of interest at an orientation;superposing at least one graphical marking at an orientation with regular and known spacing to said object of interest to make a combined image of said zone; anddisplaying said combined image,wherein the orientation of said marking is similar to the orientation of said object of interest on said combined image.2. The method according to claim 1 , wherein said object of interest is a medical device inserted in said imaged zone.3. The method according to claim 1 , wherein said object of interest is a part of said patient's body and is a part of said imaged zone.4. The method according to claim 3 , wherein said object of interest is one or more vessels of a patient's vasculature.5. The method according to claim 4 , wherein claim 4 , if said object of interest corresponds to an interleaving of several vessels claim 4 , there is a fusion of markings at crossings without a superposition of markings at said crossings.6. The method according to claim 1 , wherein the orientation of said object of interest changes at least once on said combined image and the orientation of said marking follows the orientation changes of said object of interest claim 1 , and wherein at least one of the orientation changes of said object of interest said marking is not a multiple of ninety degrees.7. The method according to claim 1 , wherein said object of interest is elongated and wherein said marking is oriented along said elongated object of ...

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Номер записи: 90
12-11-2015 дата публикации

GUIDE MEMBERS AND ASSOCIATED APPARATUSES USEFUL FOR INTRAVASCULAR ULTRASOUND PROCEDURES

Номер: US20150320979A1
Автор: Fearnot Neal E., Hawkins Kem, McKinnis Peter S.
Принадлежит:

Described are guidewires having at least one echolucent segment, and associated apparatuses and methods. The guidewires can be combined with devices equipped with intravascular ultrasound probes and used to effectively image regions during procedures underway in the vascular environment. The echolucent segment can have one or more echogenic markers to enable detection of the segment and/or relative movement of the segment using intravascular ultrasound. 1. An intravascularly-introducible apparatus , comprising:an elongate carrier body for intravascular passage, the carrier body defining at least one lumen and carrying at least one intravascular ultrasound probe for generating image data representing an imageable region external of the carrier body; anda guide member having an elongate guide body receivable through said lumen, the elongate guide body having at least a first guide body portion capable of passage into said imageable region;wherein said first guide body portion includes an echolucent material and has associated therewith at least one echogenic marker.2. The apparatus of claim 1 , wherein elongate guide body comprises at least two longitudinally-extending guide body portions joined to one another.3. The apparatus of claim 2 , further comprising:a second guide body portion formed of an echogenic material;wherein said elongate guide body includes at least said first guide body portion joined to said second guide body portion.4. The apparatus of claim 2 , wherein the first guide body portion includes a polymeric material claim 2 , and the second guide body portion includes a metal.5. The apparatus of claim 1 , wherein the at least one echogenic marker includes a plurality of longitudinally spaced echogenic marker regions.6. The apparatus of claim 1 , wherein the at least one echogenic marker includes a plurality of discrete echogenic markers or a continuous longitudinally-extending echogenic marker.7. The apparatus of claim 6 , wherein the at least one ...

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Номер записи: 91
01-11-2018 дата публикации

GUIDEWIRE MADE FROM A DRAWN FILLED TUBE OF A STAINLESS STEEL SHEATH AND NITINOL CORE

Номер: US20180311477A1
Автор: Telang Abhishek M.
Принадлежит:

A guidewire made from a drawn filled tube composite wire is described. The composite wire has a stainless steel outer sheath jacketing a nitinol core wire. The drawn filled tube composite wire is ground at its distal end to expose the nitinol core, which has superelastic and kink resistant properties that are desirable for the distal end of a guidewire. The proximal end of the drawn filled tube is not ground or if ground, the outer sheath of stainless steel is not removed to an extent sufficient to expose the nitinol core. 1. A guidewire for use in a medical procedure , the guidewire comprising:a) an elongated inner core wire extending along a longitudinal axis from a core wire proximal portion having a core wire proximal end to a core wire distal portion having a core wire distal end;b) an outer sheath extending from an outer sheath proximal portion having an outer sheath proximal end to an outer sheath distal portion, wherein the outer sheath proximal portion jackets the core wire proximal portion and the outer sheath distal portion comprises at least one tapered section that tapers distally and downwardly toward the longitudinal axis to taper out at the core wire distal portion at a location proximal the core wire distal end;c) an atraumatic tip supported at the core wire distal end; andd) a coil spring extending from a coil spring proximal portion to a coil spring distal end, wherein the coil spring proximal end is secured to the at least one tapered section of the outer sheath, and the coil spring distal end is secured to the atraumatic tip.2. The guidewire of claim 1 , wherein the outer sheath is comprised of stainless steel and the inner core wire is of a superelastic nickel-titanium alloy.3. The guidewire of claim 1 , wherein the atraumatic tip comprises the outer sheath jacketing the core wire.4. The guidewire of claim 1 , wherein the core wire is of a substantially constant outer diameter extending from the core wire proximal end to the core wire distal ...

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Номер записи: 92
01-10-2020 дата публикации

SYSTEM AND APPARATUS COMPRISING A MULTISENSOR GUIDEWIRE FOR USE IN INTERVENTIONAL CARDIOLOGY

Номер: US20200305733A1
Автор: Bilodeau Luc, CARON Eric
Принадлежит:

A system and apparatus comprising a multisensor guidewire for use in interventional cardiology, e.g., Transcatheter Valve Therapies (TVT), comprises a plurality of optical sensors for direct measurement of cardiovascular parameters, e.g. transvalvular blood pressure gradients. The guidewire has flexibility and stiffness characteristics for use as a support guidewire for TVT, e.g. for Transcatheter Aortic Valve Implantation (TAVI), comprises multiple optical pressure sensors and respective optical fibers, and a pre-formed three-dimensional flexible tip, e.g. in the form of a helix. The three-dimensional pre-formed tip is configured to assist with anchoring the guidewire within one of the ventricles and atria of the heart, or within the pulmonary artery or aorta, during interventional cardiology procedures. 1. A multisensor support guidewire for measuring blood pressure concurrently at multiple locations during transcatheter heart valve therapies (TVT) comprising:a tubular covering layer having a length extending between a proximal end and a distal end, the distal end comprising a flexible distal tip,a plurality of optical sensors and a plurality of optical fibers contained within the tubular covering layer; a sensor end of each optical fiber being attached and optically coupled to an individual one of the optical sensors; the plurality of optical sensors comprising at least two optical pressure sensors;sensor ends of each optical fiber being arranged to form a sensor arrangement wherein said plurality of optical sensors are positioned at respective sensor locations spaced apart lengthwise within a distal end portion of the guidewire;a proximal end of each of the plurality of optical fibers being coupled to an optical input/output; andthe flexible distal tip comprising a pre-formed three-dimensional curved structure.2. The multisensor support guidewire of claim 1 , wherein the pre-formed three-dimensional curved structure comprises a helix shape.3. The multisensor ...

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Номер записи: 93
26-11-2015 дата публикации

RADIOPAQUE BALLOON CATHETER AND GUIDEWIRE TO FACILITATE ALIGNMENT

Номер: US20150335866A1
Автор: CADILLO Anne Hammond, Stapleton Corey E.
Принадлежит:

An apparatus includes a catheter having a balloon including at least one first radiopaque marking. A guidewire guides the balloon to the treatment area, and includes at least one second radiopaque marking adapted for corresponding to the at least one first radiopaque marking of the balloon when positioned at the treatment area. Related aspects and methods are disclosed. 115.-. (canceled)16. An apparatus for treating a treatment area in the vasculature using a catheter having a balloon with one or more first radiopaque markings , comprising:a guidewire for guiding the balloon to the treatment area, said guidewire including at least one pair of second radiopaque markings corresponding to the one or more first radiopaque markings on the balloon.17. The apparatus of claim 16 , wherein the second radiopaque markings on the guidewire are equidistantly spaced.18. The apparatus of claim 16 , wherein the second radiopaque markings are irregularly spaced.19. The apparatus of claim 16 , further including a centered radiopaque marking on the guidewire claim 16 , equidistant from at least two of the second radiopaque markings.20. A balloon catheter in combination with the guidewire of any of .21. The balloon catheter according to claim 20 , further including a treatment for treating the treatment area.22. The balloon catheter of claim 21 , wherein the treatment is selected from the group consisting of a drug claim 21 , a stent claim 21 , a stent graft claim 21 , a cutter claim 21 , a focused force wire claim 21 , or any combination of the foregoing.23. A method of assembling an assembly including a catheter including a balloon having at least one radiopaque marking claim 21 , comprising:providing a guidewire for guiding the catheter, said guidewire including at least one second radiopaque marking adapted for corresponding to the at least one first radiopaque marking of the balloon. This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/747,422, ...

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Номер записи: 94
26-11-2015 дата публикации

RADIOPAQUE GUIDEWIRE TO FACILITATE CATHETER ALIGNMENT

Номер: US20150335867A1
Автор: Elton Richard K.
Принадлежит:

An apparatus for treating a treatment area in the vasculature using a catheter having a balloon. The apparatus comprises a guidewire for guiding the balloon to the treatment area, said guidewire including one or more radiopaque markings arranged for corresponding to the treatment area. Related aspects and methods are also disclosed. 1. An apparatus for treating a treatment area in the vasculature using a catheter having a balloon , comprising:a guidewire for guiding the balloon to the treatment area, said guidewire including one or more radiopaque markings arranged for corresponding to the treatment area.2. The apparatus of claim 1 , wherein the one or more radiopaque markings correspond in size to the treatment area.3. The apparatus of claim 1 , wherein the one or more radiopaque markings correspond in position to the treatment area.4. The apparatus of claim 1 , wherein the guidewire includes at least two radiopaque markings corresponding to the treatment area.5. The apparatus of claim 1 , wherein the guidewire includes a proximal marking adapted for aligning with a reference point on the catheter when the one or more radiopaque markings align with the treatment area claim 1 , the proximal marking preferably being provided so as to be outside of a patient's vasculature when the one or more radiopaque markings align with the treatment area claim 1 , the proximal marking being visible to the naked eye.6. The apparatus of claim 1 , wherein the guidewire includes a second radiopaque marking for aligning with a radiopaque marking on a catheter shaft of the catheter when the working surface of the balloon of the catheter aligns with the first radiopaque marking.7. The apparatus of claim 6 , wherein the second radiopaque marking on the guidewire for aligning with the radiopaque marking on the catheter shaft is at a tip of the guidewire claim 6 , and the corresponding radiopaque marking is at a distal end of the catheter shaft.8. The apparatus of claim 1 , further ...

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Номер записи: 95
17-11-2016 дата публикации

Variable stiffness guidewire

Номер: US20160331942A1
Автор: Andrew Senn, Chris Minar, Jeanne Douglas
Принадлежит: Lake Region Manufacturing Inc

This invention includes a highly torqueable, pushable guidewire with a relatively stiff proximal (preferably in one embodiment), stainless steel (SS) section and kink resistant nitinol medial to distal section attached to a shapeable SS, in one embodiment, (such as a SS ribbon) distal tip. The very distal SS tip will have the ability to be shaped by the end user in order to facilitate entry into the chosen vessels.

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Номер записи: 96
24-11-2016 дата публикации

OFFSET CATHETER

Номер: US20160338775A1
Автор: Fisher William T., SAURO Dennis M.
Принадлежит:

Various embodiments of an offset catheter are provided. In some embodiments, an offset catheter includes a guidewire tube and a catheter coupled with an elastic and/or compressible rib. The compressible rib provides an offset or separation between the catheter and the guidewire tube in its resting state. The rib has an initial resting state, but may be forced into a compressed state. When released from the compressed state, the rib returns to its resting state. An offset catheter may be compressed and slid through a sheath. When the offset catheter emerges from the sheath, the distal tip will return to its resting state providing an operation offset. 115-. (canceled)16. A catheter distal tip comprising:a catheter coupler configured to couple with a distal end of a catheter, wherein the catheter comprises a longitudinal axis extending from a proximal end to a distal end;an elastic member coupled to a guide wire lumen along a first edge, the elastic member coupled with the catheter coupler along a second edge, the elastic member being configured to laterally separate the guide wire lumen from the catheter coupler in a relaxed state, and the elastic member being configured to collapse from the first edge to the second edge under mechanical pressure bringing the guidewire lumen and the catheter coupler proximate to one another in a collapsed state in which the elastic rib is at least partially folded along the longitudinal axis of the catheter.17. The catheter distal tip according to claim 16 , wherein the catheter distal tip comprises molded plastic.18. The catheter distal tip according to claim 16 , further comprising a radio opaque marker band at the proximal end of the guidewire lumen.1922-. (canceled) This disclosure relates in general to catheters and, but not by way of limitation, to catheters with distal tips that are axially biased from a guidewire tube among other things.Arteries are the primary blood vessels that are responsible for providing blood and oxygen ...

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Номер записи: 97
22-11-2018 дата публикации

System for and method of treating aneurysms

Номер: US20180333158A1
Автор: Aamir Badruddin, Edgard Luiz Ramos Pereira, Osama O. Zaidat, Thomas J. Wolfe
Принадлежит: Galaxy Therapeutics Llc

An apparatus for treating an aneurysm in a blood vessel includes a wire to be advanced within a tube and an occlusion element disposed on the wire. The occlusion element includes a cover and an inner anchoring member. The occlusion element is configured to fit within the tube and slide out of an opening at distal end of the tube in response to movement of the wire. The cover is configured to expand to an expanded configuration when advanced into the aneurysm, wherein the cover comprises a diameter that is greater than the diameter of a neck portion of the aneurysm and is configured such that a first portion of the cover contacts an interior surface of the aneurysm and a second portion covers the neck portion of the aneurysm. The inner anchoring member extends from the cover portion and is configured to contact the interior surface of the aneurysm.

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Номер записи: 98
22-11-2018 дата публикации

DEVICES AND METHODS OF USE WITH DEVICES HAVING A RADIOPAQUE FILAMENT

Номер: US20180333562A1
Автор: Baldwin Katherine L., Cawthra, Eggert Joel T., Gruba Sarah M., JR. James K., Pagoria Douglas D., Pennington Douglas, Rohl James P., Shuey Daniel
Принадлежит:

The present disclosure relates generally to medical devices and methods for medical devices to be placed within a lumen of a patient, wherein the devices comprise one or more radiopaque filaments arranged with the devices and viewable to assist in placement and orientation of the devices with respect to the lumen. 1. A medical device for placement within a lumen of a patient comprising:a body having a length and a longitudinal axis along the length;a first radiopaque filament having a length and at least one radiopaque portion along the length, the radiopaque portion including a radiopaque material and the first radiopaque filament outlining a first contour of the device; anda second radiopaque filament having a length and being circumferentially offset from the first radiopaque filament about the longitudinal axis, the second radiopaque filament having at least one radiopaque portion along the length, the radiopaque portion including a radiopaque material and the second radiopaque filament outlining a second contour of the medical device.2. The medical device of claim 1 , wherein the body comprises a plurality of filaments woven into a shape of the body of the medical device claim 1 , the woven shape including the first contour and the second contour.3. The medical device of claim 2 , wherein the woven filaments are woven in a pattern and the first and second radiopaque filaments comprise filaments within the pattern.4. The medical device of claim 2 , wherein the first radiopaque filament is disposed alongside one of the plurality of filaments.5. The medical device of claim 1 , wherein the second radiopaque filament is circumferentially offset from the first radiopaque filament by 90 degrees.6. The medical device of claim 1 , wherein the second radiopaque filament is circumferentially offset from the first radiopaque filament by 180 degrees.7. The medical device of claim 1 , wherein the body comprises an expandable member and the first and second radiopaque ...

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Номер записи: 99
22-10-2020 дата публикации

INTRAVASCULAR CATHETER WITH FLUOROSCOPICALLY VISIBLE INDICIUM OF ROTATIONAL ORIENTATION

Номер: US20200330731A1
Автор: Howard Steve, Klos Brad, Matsuura David, Nicholson Bill
Принадлежит:

Intravascular catheters with fluoroscopically visible indicium of rotational orientation are described. The catheter includes an elongate flexible tubular body, having a proximal end, a distal end and a tubular side wall defining at least one lumen extending there through. At least first and second opposing pairs of radiopaque rings are embedded in the side wall, spaced axially apart from each other. A first transverse axis extending through the first pair of rings is rotationally offset from a second transverse axis extending through the second pair of rings. The rings may be supported by a subassembly integrated into the wall of the catheter. The subassembly may include a tubular body having a plurality of aperture portions connected by intervening hinge portions. In one implementation, the catheter is a reentry catheter. 1. An intravascular catheter with fluoroscopically visible indicium of rotational orientation , comprising:an elongate flexible tubular body, having a proximal end, a distal end and a tubular side wall defining at least one lumen extending there through;first and second opposing pairs of radiopaque rings in the side wall, spaced axially apart from each other;wherein a first transverse axis extending through the first pair of rings is rotationally offset from a second transverse axis extending through the second pair of rings.2. An intravascular catheter as in claim 1 , further comprising an aperture in the side wall through each ring.3. An intravascular catheter as in claim 1 , further comprising a frame connecting the rings.4. An intravascular catheter as in claim 3 , wherein the portion of the frame in between the first and second opposing pairs of rings comprises a hinge.5. A subassembly for integration into the wall of a catheter claim 3 , comprising:a tubular body comprising a plurality of aperture portions and intervening hinge portions; Each aperture portion comprising a first and a second aperture carried on opposing sides of the tubular ...

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Номер записи: 100