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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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Применить Всего найдено 16065. Отображено 100.
12-01-2012 дата публикации

Heart valve prosthesis using different types of living tissue and method of fabricating the same

Номер: US20120010697A1
Автор: Chang-Ha Lee, Cheul Lee, Eun Ae Jo, Hong-Gook Lim, Kang Sun Hong, Kyong-Min Shin, Sam Sea Oh, Yong-Jin Kim
Принадлежит: Taewoong Medical Co Ltd

A heart valve prosthesis and a method of fabricating the same. The heart valve prosthesis uses a leaflet of pig pericardium or a leaflet of cattle pericardium, which has a suitable thickness according to the size of the valve, and a stent. The heart valve prosthesis is fabricated by placing a valve body over a Dacron body, binding the valve body to the Dacron body using stitching fiber, rolling the Dacron body into a cylindrical form such that the valve body is located inside, binding opposite edges of the Dacron body to each other using stitching fiber, and inserting the resultant structure into a stent, which is knitted using a shape memory alloy wire. The heart valve prosthesis is friendly to and is not rejected by human tissue, is free from deformation, and can be implanted using a non-invasive manner without incising the chest wall of a patient.

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Номер записи: 1
09-02-2012 дата публикации

Ring stent

Номер: US20120035710A1
Автор: David Ernest Hartley
Принадлежит: David Ernest Hartley

A stent arrangement which has at least a first ring ( 3 ) and zig zag struts ( 5 ) extending axially from the periphery of the ring. There can be first and second rings ( 3, 4 ) axially spaced apart and defining substantially parallel planes and a plurality of zig zag portions ( 5 ) between the first and second ring portions around the periphery thereof. The stent can be formed from a single wire or laser cut from a cannula and can be covered or uncovered.

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Номер записи: 2
09-02-2012 дата публикации

Stent Graft Having A Marker And A Reinforcing And Marker Ring

Номер: US20120035714A1
Автор: Chantelle King, David Ernest Hartley, Werner D. Ducke
Принадлежит: Cook Medical Technologies LLC, William A Cook Australia Pty Ltd

A reinforcing and marker ring for a stent graft is disclosed. The reinforcing and marker ring comprises a plurality of turns of a substantially inextensible resilient wire in a circular shape and terminal ends at each end of the wire. The terminal ends each comprise a loop, each loop attachable to a stent graft having an opening or a fenestration so as to substantially lock a peripheral length of the circular shape. A marker winding is wound helically around the reinforcing wire, the marker winding being viewable on an image display system employing electromagnetic radiation so as to indicate the location of a periphery of the fenestration. The circular shape of the resilient wire, with the marker winding wound around it, is collapsible under radial pressure to form a squashed circular shape for loading into a delivery device, the squashed circular shape self-expandable back to a substantially circular shape upon release from the delivery device. The marker winding defines a curved passageway around the resilient wire of the reinforcing ring, the curved passageway having an internal diameter D, wherein the marker winding is helically wound with a pitch providing at least one winding per length D along the reinforcing wire of the reinforcing ring. The marker winding may be a radiopaque gold wire wound around a nitinol reinforcing wire.

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Номер записи: 3
16-02-2012 дата публикации

Sealing sheath for prosthetic liner and related methods

Номер: US20120041568A1
Автор: Craig Mackenzie
Принадлежит: Individual

The sealing sheath is for use with a prosthetic socket and associated liner. The sealing sheath includes a textile tube for surrounding at least a portion of a liner that is configured to wear on a residual limb. An annular seal, e.g. an elastomeric or silicone seal, is positioned adjacent a proximal end of the textile tube and continuously extends from an inside of the textile tube configured to be adjacent the liner, through the textile tube to an outside thereof configured to be adjacent an inside of the prosthetic socket. The annular seal may include a first wing on an inside of the textile tube configured to be adjacent the liner, a second wing on an outside of the textile tube configured to be adjacent an inside of the prosthetic socket, and a base connecting lower ends of the first and second wings to define a v-shaped cross-section of the annular seal.

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Номер записи: 4
23-02-2012 дата публикации

Forced deployment sequence handle assembly with independent actuating mechanism

Номер: US20120046652A1
Автор: Justin W. Sokel
Принадлежит: WL Gore and Associates Inc

A handle assembly for use in the deployment of a medical device via a plurality of deployment lines that extend through a catheter. The handle assembly includes a plurality of removable members for deployment or actuation of the medical device. The handle assembly also includes an actuating mechanism for displacing a wire extending through the catheter for actuating the medical device independently of the plurality of removable members.

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Номер записи: 5
23-02-2012 дата публикации

Graft Systems Having Filling Structures Supported by Scaffolds and Methods for Their Use

Номер: US20120046684A1
Автор: Amy Lee, Gwendolyn A. Watanabe, Michael A. Evans, Steven L. Herbowy
Принадлежит: Endologix LLC

Aneurysms are treated by filling at least one double-walled filling structure with a curable medium within the aneurysm. The filling structures may be delivered over balloon deployment mechanisms in order to shape and open tubular lumens therethrough. Scaffolds are placed into the tubular lumens in order to help maintain the shape, anchor the filling structures in place, and provide improved blood flow transition into and out of the tubular lumens.

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Номер записи: 6
15-03-2012 дата публикации

Endovascular aneurysm repair system

Номер: US20120065661A1
Автор: Lee Bolduc
Принадлежит: Aptus Endosystems Inc

Method and apparatus for implanting radially expandable prostheses in the body lumens rely on tacking or anchoring of the prostheses with separately introduced fasteners. The prostheses may be self-expanding or balloon expandable. After initial placement, a fastener applier system is introduced within the expanded prostheses to deploy a plurality of fasteners at least one prosthesis end, usually as each end of the prosthesis. The fasteners are usually helical fasteners which are delivered from a helical track in the fastener applier by rotation with a rotator wire. The fasteners will be applied singly, typically in circumferentially spaced-apart patterns about the interior of each end of the prosthesis.

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Номер записи: 7
15-03-2012 дата публикации

Intravascular hinge stent

Номер: US20120065723A1
Автор: Joseph Michael Thielen, William Joseph Drasler
Принадлежит: Individual

A balloon or self expandable endoprosthesis formed of a single or multiple joined stent sections. Each section has a node and strut structure extending throughout in order to uncouple expansion forces of the stent to hold a blood vessel outward from crush forces that resist the formation of an oval shape during crush deformation. The hinge can bend in the direction of a uniformly curved surface of the stent but not in the radial direction. The strut can bend in the radial direction but not in the uniformly curved surface of the stent. The widths, lengths, and radial dimensions of the hinges and struts provide a balloon-expandable hinge stent that is non-crushable. For a self-expanding stent the hinge and strut dimensions provide expansion forces that are controlled independently from crush forces. Expansion properties are determined by the hinge dimensions and crush properties are determined independently by strut dimensions.

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Номер записи: 8
05-04-2012 дата публикации

External scaffolds for expanding strictures in tubular organs and their use

Номер: US20120083819A1
Автор: Frank Wang, Tzu Hsin Feng
Принадлежит: Individual

External scaffolds for expanding a stricture in the lumen of a tubular structure or organ in a mammal are disclosed herein. A method for expanding a stricture in the lumen of a tubular structure or organ in a mammal using the above external scaffolds is also disclosed.

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Номер записи: 9
19-04-2012 дата публикации

Modular grafting system and method

Номер: US20120095547A1
Автор: Timothy A.M. Chuter
Принадлежит: Endovascular Technologies Inc

A system and method for treating and repairing complex anatomy characterized by a plurality of vessel portions oriented at various angles relative to each other. The system including a graft device that is capable of being assembled in situ and has associated therewith a method that avoids the cessation of blood flow to vital organs. A delivery catheter system and various graft supporting, mating and anchoring structures are additionally included.

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Номер записи: 10
26-04-2012 дата публикации

Adjustable socket system

Номер: US20120101597A1
Автор: Andrew BACHE
Принадлежит: OSSUR HF

An adjustable socket system is configured to accommodate a residual limb. The adjustable socket system has first and second opposed sides and includes a rigid first component arranged along the first side of the socket. An adjustable second component has a plurality of interconnected vertebrae elements connected to the first component and is arranged along the second side of the socket system. The adjustable prosthetic socket also has a base connector secured to the distal end area of the first component.

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Номер записи: 11
10-05-2012 дата публикации

Coated medical devices and methods

Номер: US20120116503A1
Автор: David D. Grewe, Keith Milner, Kenneth Haselby
Принадлежит: Med Inst LLC

The invention relates to medical device systems that include a delivery instrument comprising a sheath having an abluminal surface and a luminal surface; a radially-expandable frame disposed at least partially within the sheath, the frame having an abluminal surface at least partially in contact with the luminal surface of the sheath, and a luminal surface defining a sub-stantially cylindrical lumen; and a fine powder coating disposed on at least one of the abluminal surface of the frame and the luminal surface of the sheath. The invention also relates to methods of manufacturing, loading, and delivering the coated medical devices.

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Номер записи: 12
10-05-2012 дата публикации

Temporary protective gastrointestinal device

Номер: US20120116528A1
Автор: Ninh T. Nguyen
Принадлежит: Endoshield Inc

Disclosed is an intraluminal gastrointestinal (GI) device that is placed at the time of surgery to protect a freshly constructed GI anastomosis, GI staple-line, or the like. For the esophagus and stomach, the device covers the esophagus, stomach, and anastomosis/staple-line. For the pancreas or biliary duct, the device covers the biliary duct, pancreatic duct, and small bowel. For the colon and rectum, the device is a self expanding protective barrier that covers the anal canal, the anus, and the colon or rectum, approximately 18 cm proximal to the anus. These devices provide a waterproof barrier between the gastrointestinal content and the mucosa of the GI tract and the newly constructed anastomosis. Additionally, the design of the device is made to prevent migration within the gastrointestinal tract and facilitate removal of the device.

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Номер записи: 13
10-05-2012 дата публикации

Custom-fitted prosthetic socket devices and methods for producing same

Номер: US20120116539A1
Автор: Peter Armstrong, Wayne Armstrong
Принадлежит: Peter Armstrong, Wayne Armstrong

Methods of producing a custom-fitted prosthetic socket device for a residual limb include covering the distal end thereof with a liner, positioning the covered end within a socket cup to maintain a spaced relationship between the exterior of the liner and the interior of the socket cup, introducing an expandable, hardenable filler material into the socket cup, expanding the material to fill the volume between the liner and the socket cup, hardening the material, and removing the socket cup, hardened filler material, and liner, from the residual limb. Some methods include a filler material that hardens into a flexible solid foam cushioning layer which may optionally form a bond between the socket cup and the liner, embedding the liner in the cushioning layer. Some methods include selecting a socket cup from a plurality of sized socket cups, and/or providing the plurality of sized socket cups.

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Номер записи: 14
17-05-2012 дата публикации

Blood-flow tubing

Номер: US20120123520A1
Автор: John Bruce Cameron Dick, John Graeme Houston, Peter Stonebridge
Принадлежит: Tayside University Hospitals NHS Trust

An artificial or modified natural blood flow tubing has a helical-flow inducer to induce helical flow in such a fashion as to eliminate or reduce turbulence. One inducer is a tubular stent of expansible mesh having a helical vane.

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Номер записи: 15
24-05-2012 дата публикации

Devices and methods for in situ fenestration of a stent-graft at the site of a branch vessel

Номер: US20120130478A1
Автор: Edward E. Shaw
Принадлежит: WL Gore and Associates Inc

The present disclosure includes a stent-graft comprising a first portion that is configured to engage a vessel wall, a second portion that is configured not to engage the vessel wall, and a perfusion window that is configured to permit blood flow. The stent-graft may further comprise a transition portion between the first portion and the second portion, and the perfusion window may be formed in the first portion, the second portion, and/or the transition portion. In a variety of embodiments, one of the first and the second portion may have a smaller diameter than the other. Similarly, in a variety of embodiments, the transition portion may be frustoconically shaped.

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Номер записи: 16
31-05-2012 дата публикации

Method And Apparatus For Treating Airway Obstruction

Номер: US20120136440A1
Автор: Brian J. Cox, Dean Schaefer, Robert F. Rosenbluth
Принадлежит: Individual

Methods and Devices for treating airway openings and breathing disorders including obstructive sleep apnea are disclosed. Structures and methods disclosed herein maintain and preserve airway openings against posterior collapse of the tongue.

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Номер записи: 17
07-06-2012 дата публикации

Vacuum prosthesis with force sensing member

Номер: US20120143351A1
Автор: Michael E. Tompkins
Принадлежит: Hanger Orthopedic Group Inc

A prosthetic device includes a socket assembly defining a cavity and configured to receive a portion of a residual limb of a user within the cavity, a force sensing member configured to detect forces applied to the residual limb at a plurality of locations about the portion of the residual limb and generate signals based on the detected force, a vacuum system in fluid communication with the socket and configured to control an amount of vacuum applied to the cavity, and a controller coupled to the force sensing member and the vacuum system. The controller is configured to receive the signals from the force sensing member and control operation of the vacuum system during use of the prosthetic device by the user based at least in part on the signals received from the force sensing member.

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Номер записи: 18
28-06-2012 дата публикации

Woven Prosthesis and Method for Manufacturing the Same

Номер: US20120165918A1
Автор: George Du
Принадлежит: MAQUET CARDIOVASCULAR LLC

A woven prosthesis, such as a woven vascular graft, woven from warp and weft yarns. Velour warp yarns forming the prosthesis are selectively incorporated into a base layer of the prosthesis so as to provide a bulbous section without compromising the porosity of the prosthesis.

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Номер записи: 19
05-07-2012 дата публикации

Dynamically Activated Variable Response Socket with Hydraulic Pump

Номер: US20120173000A1
Автор: Carl A. Caspers
Принадлежит: CARL CASPERS CONSULTING LLC

An articulating prosthetic foot is used for a prosthetic or orthotic artificial limb for amputees having a residual limb. The artificial limb has a pylon and a socket for receiving the residual limb and a vacuum pump connected to the socket. The articulating foot articulates on the pylon and has a hydraulic pump. The hydraulic pump is driven by the articulating motion of the foot and drives the vacuum pump.

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Номер записи: 20
19-07-2012 дата публикации

Anti-obesity devices

Номер: US20120184967A1
Автор: Andy H. Levine, David A. Melanson, John C. Meade
Принадлежит: GI Dynamics Inc

Method and apparatus for limiting absorption of food products in specific parts of the digestive system is presented. A gastrointestinal implant device is anchored in the pyloric portion of the gastrointestinal system and extends beyond the ligament of Treitz. All food exiting the stomach is funneled through the device. The gastrointestinal device includes an anchor for anchoring the device in the pyloric portion and a flexible sleeve that extents into the duodenum. The anchor is collapsible for endoscopic delivery and removal.

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Номер записи: 21
26-07-2012 дата публикации

Joined Inflation Portions for Bifurcation Catheter

Номер: US20120186064A1
Автор: Daryl L. Martin, Richard A. Noddin
Принадлежит: Boston Scientific Scimed Inc

An example multi-lumen member forming dual inflation portions of a catheter assembly for treating bifurcated vessels includes a main tube defining a main lumen and a main inflation portion. The member includes a side tube defining a side lumen and a side inflation portion, the side tube extending along at least a first length of the main tube. The member also includes a portion extending along the first length of the main tube and coupling the main tube to the side tube to form a dual lumen configuration.

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Номер записи: 22
02-08-2012 дата публикации

Stretch resistant therapeutic device

Номер: US20120197286A1
Автор: Eric Leopold, Peter Wilson, Rupesh K. Desai
Принадлежит: Micrus Corp

A vasoocclusive coil is reinforced with a stretch resistant member to improve safety during retraction of the coil. The stretch resistant member is fixedly attached at one end to the vasoocclusive coil, and the other end of the stretch resistant member is detachably mounted to an elongated pusher member to allow for placement and release of the vasoocclusive coil within the patient's vasculature.

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Номер записи: 23
16-08-2012 дата публикации

Amputation residuum device and method of using the same

Номер: US20120209404A1
Автор: Laura Brewer Riedel, Michael Joseph Astilla
Принадлежит: Pando Innovations Inc

An apparatus and method for post amputation residuum maintenance and for preserving motion of the knee are provided. The apparatus includes an elongated shell having a longitudinal axis and defining a hollow interior closed at a distal end, the shell having an opening extending from a proximal end and adapted to receive a residuum into the interior of the shell, and a longitudinal slit having a circular aperture at each end.

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Номер записи: 24
13-09-2012 дата публикации

Method and apparatus for colouring a cosmetic covering

Номер: US20120229828A1
Автор: Hugh Gill
Принадлежит: Touch Emas Ltd

The invention provides a method and apparatus for colouring a cosmetic covering. The apparatus includes image acquisition apparatus ( 18 ) operative to acquire an image of a part of a human or animal body to provide a digital colour image, processing apparatus ( 20 ) operative to determine a calibration transform for colours of an image acquired by the image acquisition apparatus, the processing apparatus being further operative to transform the digital colour image with the calibration transform to provide a colour compensated digital colour image, pigment mixing apparatus ( 26 ) operative to mix a plurality of pigments of different colours in dependence on at least one colour characteristic of at least one colour within the colour compensated digital colour image to produce at least one mixed pigment, and pigment applying apparatus ( 24 ) operative to apply the at least one mixed pigment to a cosmetic covering.

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Номер записи: 25
20-09-2012 дата публикации

Defferential dilation stent and method of use

Номер: US20120239137A1
Автор: Kumar G. Jambunathan, Richard R. Heuser
Принадлежит: PQ Bypass Inc

Embodiments herein provide differential dilation stents for use in percutaneous interventions, such as transluminal bypass procedures. In some embodiments, the stents may be used in the process of creating an arteriovenous (AV) fistula during a percutaneous bypass procedure, and such stents may have two or more specialized regions that are configured to adopt a predetermined diameter, shape, and/or tensile strength upon insertion in order to suit the needs of the vessel or procedure. The disclosed stents may be used for creating and/or maintaining an arterial/venous fistula for bypass of an occlusion in a cardiac artery using a cardiac vein, or the femoral artery, for example using the tibial or popliteal vein.

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Номер записи: 26
04-10-2012 дата публикации

Stent designs having enhanced radiopacity

Номер: US20120253454A1
Автор: Kieran Costello
Принадлежит: Cook Medical Technologies LLC

The present embodiments provide stents for use in medical procedures. In one embodiment, a stent comprises a first flanged region and a body region. A first diameter of the first flanged region is greater than a second diameter of the body region when the stent is in an expanded deployed state. A proximal junction is formed between the first flanged region and the body region. The proximal junction comprises at least one strut extending from the distal end of the first flanged region in a distal direction towards the proximal end of the body region. A strut at the proximal end of the body region is disposed around at least a portion of the strut of the proximal junction. The overlap between the strut at the proximal end of the body region with the strut of the proximal junction causes an increased radiopaque effect at the proximal junction.

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Номер записи: 27
11-10-2012 дата публикации

Intraluminal scaffold system and use thereof

Номер: US20120259399A1
Автор: Kevin J. Ehrenreich, Randolf Von Oepen
Принадлежит: ABBOTT LABORATORIES

Intraluminal scaffold assembly implantable in a body lumen of a patient to manipulate a valve of the lumen is provided. The intraluminal scaffold assembly includes an intraluminal scaffold, an elongated core member coupled with the intraluminal scaffold having a length sufficient to traverse a valve in a body lumen with the intraluminal scaffold positioned proximate the valve. The intraluminal scaffold assembly can further include one or more additional intraluminal scaffolds, a weighted element or an active element that is coupled with the elongated core member. A system including a delivery system and the intraluminal scaffold assembly, as well as methods of delivering the intraluminal scaffold assembly and using the intraluminal scaffold assembly to manipulate a valve in a body lumen, is also provided.

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Номер записи: 28
11-10-2012 дата публикации

Flexible intraluminal scaffold

Номер: US20120259400A1
Автор: Kevin J. Ehrenreich, Randolf Von Oepen
Принадлежит: ABBOTT LABORATORIES

Expandable intraluminal scaffold defining a longitudinal axis is provided, wherein the scaffold includes at least two filaments extending from a head portion disposed along the longitudinal axis at a first longitudinal end, each of the at least two filaments including a free end portion at a second longitudinal end opposite the head portion. The at least two filaments converge toward each other at a juncture disposed proximate the longitudinal axis between the first longitudinal end and the second longitudinal end. A system including a delivery system and the intraluminal scaffold, as well as a method of delivering the scaffold, is also provided.

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Номер записи: 29
15-11-2012 дата публикации

Implantable medical device having enhanced endothelial migration features and methods of making the same

Номер: US20120290074A1
Автор: Julio C. Palmaz
Принадлежит: Palmaz Scientific Inc

An implantable medical device having enhanced endothelial migration features, generally comprises: a structural member including a leading edge and a trailing edge interconnected by a third surface region, the leading edge including a second surface region in a generally curvilinear cross-section, and the trailing edge including a fourth surface region in a generally curvilinear cross-section, whereby blood flow over the second surface region generate shear stress at the second surface region without an eddy region in the second surface region.

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Номер записи: 30
22-11-2012 дата публикации

Methods and systems for performing vascular reconstruction

Номер: US20120296408A1
Автор: Donald K. Jones, Vladimir Mitelberg
Принадлежит: Individual

Devices, systems and methods are provided for performing intra-lumenal medical procedures in a desired area of the body. Stents, stent delivery devices and methods of performing medical procedures to redirect and or re-establish the intravascular flow of blood are provided for the treatment of hemorrhagic and ischemic disease states.

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Номер записи: 31
22-11-2012 дата публикации

Thoracic aorta stent graft

Номер: US20120296414A1
Автор: David Ernest Hartley
Принадлежит: Cook Medical Technologies LLC, William A Cook Australia Pty Ltd

A stent graft for placement in the thoracic arch of a patient has a tubular body defining a main lumen therethrough, a plurality of zig zag stents along the tubular body, each of the stents comprising a plurality of struts and bends, the bends being between adjacent struts. At least a first stent and an adjacent second stent having at least a pair of adjacent bends on the first stent aligned with an adjacent pair of bends on the second stent, whereby a first pair of adjacent struts of the first stent and a second pair of adjacent struts of the second adjacent stent together define a diamond shape region. A recess is within the diamond shaped region with the recess extending into the lumen of the tubular body. A fenestration extending into the tubular body within the recess in the diamond shaped region and a graft tube leading from the fenestration into the main lumen. There can be one, two or three diamond shaped regions, recesses, fenestrations and graft tubes Proximally of the or each diamond shaped region the tubular body has a first diameter, distally of the diamond shaped region the tubular body has a second diameter and in the region of the tubular body around the diamond shaped region the tubular body has a third diameter, the first diameter being greater than the second diameter and both the first and second diameter being greater than the third diameter whereby a central region is defined which will allow circumferential blood flow during an operation out of the graft tube into the recess and then into the central region.

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Номер записи: 32
06-12-2012 дата публикации

Gastrointestinal implant device and delivery system therefor

Номер: US20120310138A1
Автор: Niall Behan
Принадлежит: Vysera Biomedical Ltd

A delivery system comprises a delivery catheter with a distal capsule which contains a scaffold, a valve and a sleeve in the retracted configuration. The delivery system includes a proximal expandable element provided by an inflatable proximal balloon and a distal expandable element provided by a distal balloon. The proximal balloon provides a temporary seal at the proximal side of the valve. The distal balloon provides a temporary distal seal between a distal olive and a distal end of the sleeve. An inflation fluid is introduced into the sleeve between the proximal and distal balloons the fluid causes the sleeve to expand axially to the expanded deployed configuration. When the sleeve is in the extended deployed configuration the distal balloon is deflated, allowing the olive to detach and travel distally. The rest of the delivery system can then be withdrawn proximally, leaving the implant device in situ.

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Номер записи: 33
13-12-2012 дата публикации

Virtual prototyping and testing for medical device development

Номер: US20120316854A1
Автор: Michael V. Chobotov, Robert G. Whirley
Принадлежит: TriVascular Inc

A system and method of developing better-designed medical devices, particularly cardiovascular stents and endovascular grafts. The system comprises a geometry generator, a mesh generator, a stress/strain/deformation analyzer, and a visualization tool. Using analysis, preferably non-linear analysis, the stress/strain/deformation analyzer determines the predicted stresses, strains, and deformations on the candidate medical device. Such stresses, strains, and deformations may optionally be simulated visually using a visualization tool.

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Номер записи: 34
20-12-2012 дата публикации

Paraplegia prevention stent graft

Номер: US20120323303A1
Автор: Krasnodar Ivancev
Принадлежит: Cook Medical Technologies LLC

A stent graft ( 10 ) for deployment into the aorta of a patient has a tubular body ( 12 ) with a proximal portion ( 14 ) of a selected diameter and a portion ( 16 ) of a reduced diameter less than the selected diameter distal of the proximal portion and a tapered portion ( 18 ) extending between the proximal portion and the portion of reduced diameter. Low profile side arms ( 26, 28, 30, 32 ) are provided in the portion of reduced diameter and/or the tapered portion. The side arms are for connection of an arm extension to an aortic branch vessel. A paraplegia prevention vent tube ( 34 ) is provided in fluid communication with the main lumen and open to external of the tubular body in the region defined by the portion of reduced diameter and the tapered portion. The paraplegia prevention vent tube is not intended to be connected to a side branch of the aorta but is intended, and is so constructed and arranged, to provide temporary perfusion to external of the stent graft after deployment of the stent graft into the aorta and is intended, and is so constructed and arranged, to be subsequently blocked.

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Номер записи: 35
20-12-2012 дата публикации

Stent for endoluminal delivery of active principles or agents

Номер: US20120323312A1
Автор: Andrea Grignani, Enrico Pasquino, Giovanni Rolando, Maria Curcio
Принадлежит: Sorin Biomedica Cardio SpA

The present invention provides a stent for implantation at a site within a human or animal body comprising: an expandable body having an inner surface and an outer surface; and treatment agents applied to the outer surface of the expandable body, the treatment agents comprising a combination of Paclitaxel and FK506 or their derivatives or analogues.

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Номер записи: 36
10-01-2013 дата публикации

Stent for connecting adjacent tissues of organs

Номер: US20130012969A1
Автор: Kyong-Min Shin
Принадлежит: Individual

Disclosed herein is a stent for connecting adjacent tissues of the organs of a patient. The stent includes a hollow cylindrical body which is formed by weaving a superelastic shape-memory alloy wire in an overlapping manner such that rhombic openings are formed, and wing parts which are provided by expanding respective opposite ends of the hollow cylindrical body outwards and turning the opposite ends inside out on bent portions. The wing parts face each other so that the wing parts are tensed in a longitudinal direction of the cylindrical body. Thereby, the wing parts can elastically move inwards or outwards with respect to the longitudinal direction to automatically adjust a distance between the wing parts in response to the distance between the adjacent tissues of the organs or thicknesses of walls of the organs, so that the wing parts are put into close contact with the adjacent tissues.

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Номер записи: 37
14-02-2013 дата публикации

Branch vessel prostheses

Номер: US20130041456A1
Автор: Roy K. Greenberg
Принадлежит: Roy K. Greenberg

The present embodiments provide a branch vessel prosthesis for placement at least partially between a main vessel and a branch vessel of a patient. The branch vessel prosthesis has a graft including a generally tubular body of a biocompatible material. At least one stent is coupled to a proximal region of the graft, and at least one stent is coupled to a distal region of the graft. The proximal region of the graft includes a generally straight configuration in an expanded deployed state that is substantially parallel to a longitudinal axis of a main vessel. The distal region of the graft includes a generally straight configuration in the expanded deployed state that is substantially parallel to a branch vessel. A curvature of a central region varies an angle in which the distal region of the graft is disposed relative to the proximal region.

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Номер записи: 38
21-03-2013 дата публикации

Self-Sealing PTFE Graft with Kink Resistance

Номер: US20130071550A1
Автор: Abbott Jamie, Bogert David L., Brown Fitzroy, Cole Heidi R., Edwin Tarun J., Elton Richard, Pathak Chandrashekhar Prabhakar, Shahriari Kereshmeh
Принадлежит: C. R. BARD, INC.

A self-sealing vascular graft, including a substrate with a sealant layer and several optional additional layers, is described. The substrate can be ePTFE and the material used for the sealant and additional layers can be polyurethane. The sealant layer and additional layers may include one or more base layers, one or more foam layers, beading of different sizes and shapes, and ePTFE tape. A flared cuff may be integral to one or both ends of the substrate or may be attached to one or both ends. Various methods of making a self-sealing vascular graft are also described, including methods of disposition, methods of forming, methods of bonding and methods of attaching. 1. A method of forming a vascular graft , comprising:providing a tubular ePTFE substrate;applying a sealant layer over the tubular ePTFE substrate;compressing the tubular ePTFE substrate with sealant layer;applying a foam layer over the sealant layer to form a preliminary graft assembly;heating the preliminary graft assembly;longitudinally compressing the preliminary graft assembly to form a longitudinally compressed graft assembly; andwrapping a beading over the longitudinally compressed graft assembly;2. The method according to claim 1 , wherein the compressing the tubular ePTFE substrate with sealant layer includes longitudinal compression.3. The method according to claim 2 , wherein the compressing the tubular ePTFE substrate with sealant layer further includes radial compression.4. The method according to claim 1 , wherein the tubular ePTFE substrate with sealant layer is radially dilated to a dilated diameter and subsequently contracted via heating to a contracted diameter less than the dilated diameter.5. The method according to claim 1 , further comprising wrapping a layer of ePTFE tape over the longitudinally compressed graft assembly.6. The method according to claim 5 , wherein the wrapping a layer of ePTFE tape comprises passing the ePTFE tape through a solution prior to wrapping.7. The method ...

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Номер записи: 39
21-03-2013 дата публикации

Stent

Номер: US20130073023A1
Автор: Bertrand Olivier, Leask Richard Lawrence, Mongrain Rosaire
Принадлежит:

A stent insertable in a body vessel, the body vessel defining a vessel wall. The stent includes a plurality of struts, the struts defining a substantially elongated stent passageway, the struts being configured, sized and operatively coupled to each other in a manner such that the stent is deformable between a first configuration and a second configuration. In the first configuration, the stent passageway has a first radial dimension and a first longitudinal dimension, and in the second configuration, the stent has a second radial dimension and a second longitudinal dimension, the second radial dimension being at least as large as the first radial dimension and the second longitudinal dimension being larger than the first longitudinal dimension. The stent is able to expand substantially longitudinally with the body vessel as the body vessel grows without reducing in diameter so as to reduce risks of damaging the vessel wall as the body vessel grows. 1. A stent insertable in a body vessel , said body vessel defining a vessel wall , said stent comprising:a plurality of struts, said struts defining a substantially elongated stent passageway, said struts being configured, sized and operatively coupled to each other in a manner such that said stent is deformable-longitudinally and radially between a first configuration and a second configuration;wherein in said first configuration, said stent passageway has a first radial dimension and a first longitudinal dimension and in said second configuration, said stent has a second radial dimension and a second longitudinal dimension;said second radial dimension being larger than said first radial dimension and said second longitudinal dimension being larger than said first longitudinal dimension;wherein, after having been inserted in said body vessel, said stent is able to expand substantially longitudinally and radially with said body vessel as said body vessel grows.2. A stent as defined in claim 1 , wherein said struts define ...

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Номер записи: 40
21-03-2013 дата публикации

Co-BASED ALLOYS FOR BIOMEDICAL APPLICATIONS AND STENT

Номер: US20130073028A1
Автор: CHIBA Akihiko
Принадлежит: SEIKO INSTRUMENTS INC.

A first object of the present invention is to provide Co-based alloys for biomedical applications which are Ni-free, high intensity and high elastic modulus and are suitable for plastic workability. Moreover, a second object of the present invention is to provide Co-based alloys for biomedical applications having X-ray visibility. Furthermore, a third object of the present invention is to provide a stent using the alloys. The Co-based alloys for biomedical applications according to the present invention is configured by adding alloy elements having biocompatibility and an effect of increasing stacking fault energy of the alloys. 1. Co-based alloys for biomedical applications comprising:an alloy element, which has biocompatibility and is effective in increasing stacking fault energy of the corresponding alloys, which is added to Co—Cr—W system alloys.2. The Co-based alloys for biomedical applications according to claim 1 , wherein the alloy element is one type or two types or more selected from a group consisting of Nb claim 1 , Ta and Fe.3. The Co-based alloys for biomedical applications according to claim 1 , wherein the alloy element is Nb and/or Ta.4. The Co-based alloys for biomedical applications according to claim 2 , wherein the alloy element is Nb and/or Ta.5. The Co-based alloys for biomedical applications according to claim 1 , containing Cr: 5% by mass to 30% by mass and W: 5% by mass to 20% by mass.6. The Co-based alloys for biomedical applications according to claim 2 , containing Cr: 5% by mass to 30% by mass and W: 5% by mass to 20% by mass.7. The Co-based alloys for biomedical applications according to claim 3 , containing Cr: 5% by mass to 30% by mass and W: 5% by mass to 20% by mass.8. The Co-based alloys for biomedical applications according to claim 4 , containing Cr: 5% by mass to 30% by mass and W: 5% by mass to 20% by mass.9. The Co-based alloys for biomedical applications according to claim 3 , wherein the addition amount of the alloy element ...

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Номер записи: 41
21-03-2013 дата публикации

STENT WITH IMPROVED END CELL STRUCTURAL MEMBER

Номер: US20130073052A1
Автор: Kim Seoggwan, Swift Richard A.
Принадлежит:

A stent () is provided with an improved structural member () at the end () of the stent structure () to minimize deformation of the stent structure when pushing forces are applied to the end of the stent. The improved structural member is wider than other structural members () in the stent structure. The improved structural member is better able to distribute pushing forces to the other structural members in the stent structure with minimal deformation. 1. A stent , comprisinga series of structural members extending around a circumference from a first end to a second end, said structural members being expandable between a collapsed diameter and an expanded diameter;wherein said structural members forming one of said first and second ends comprise a series of first structural members and a series second structural members, wherein each of said first structural members are circumferentially interconnected by said second structural members;a pushing member attached to an outer end of each of said first structural members; andwherein said first structural members are at least 1.5 times as wide as said second structural members.2. The stent according to claim 1 , wherein said stent is about 5 French or less in diameter.3. The stent according to claim 1 , wherein said stent is between about 4 and about 5 French in diameter.4. The stent according to claim 1 , wherein said first structural members are at least 2.25 times wider than said second structural members.5. The stent according to claim 1 , wherein said stent is self-expanding.6. The stent according to claim 1 , wherein a cross-section of said series of structural members is generally rectangular.7. The stent according to claim 1 , wherein said pushing member is a round eyelet.8. The stent according to claim 1 , wherein each of said pushing members is attached to one of said second structural members on both sides of each of said first structural members.9. The stent according to claim 8 , wherein each of said first ...

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Номер записи: 42
21-03-2013 дата публикации

Implantable Prosthetic Device For Distribution Of Weight On Amputated Limb And Method Of Use With An External Prosthetic Device

Номер: US20130073057A1
Автор: Larry Nelson Smith
Принадлежит: Individual

Embodiments of the invention include an implantable force distribution boot with hydraulic features that mimic the natural hydraulics of a joint. Further embodiments include an exterior prosthetic leg device having intermittent and/or variable electromagnetic features that can engage with magnetic blades on the implantable force distribution boot. In use, the exterior prosthetic leg can be maintained on a residual limb by magnetic force between the implanted blades and the exterior electromagnets. Also disclosed are surgical techniques for preparing a residual limb to better receive and adapt to a prosthetic device. The techniques include an improved surgical method for harvesting a vascularized glabrous skin free flap.

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Номер записи: 43
28-03-2013 дата публикации

STENT FOR THE POSITIONING AND ANCHORING OF A VALVULAR PROSTHESIS IN AN IMPLANTATION SITE IN THE HEART OF A PATIENT

Номер: US20130079869A1
Автор: Jung Johannes, Straubinger Helmut
Принадлежит:

The present invention relates to a stet for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. The stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch via a first connecting web. The stent moreover comprises at least one auxiliary retaining arch which connects the respective arms of the at least one retaining arch connected to the at least one positioning arch. 121-. (canceled)22. A stent , comprising:a lattice skirt, having a plurality of closed cells extending around a circumference of the stent and disposed at a first end of the stent;a plurality of first arches, each having an apex projecting toward the first end of the stent and configured to be disposed within a sinus pocket of a native valve radially outward of a plurality of leaflets of the native valve when the stent is implanted;a first set of retaining arms, wherein respective first ends of each of the retaining arms of the first set are joined to the lattice skirt, and wherein respective second ends of each of the retaining arms of the first set are joined to one another;a second set of retaining arms, wherein respective first ends of each of the retaining arms of the second set are joined to the lattice skirt, and wherein respective second ends of each of the retaining arms of the second set are joined to one another;a first pair of ...

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Номер записи: 44
28-03-2013 дата публикации

Endoluminal prosthesis with steerable branch

Номер: US20130079870A1
Автор: Blayne A. Roeder, Jarin Kratzberg, Matthew S. Huser, Roy K. Greenberg
Принадлежит: CLEVELAND CLINIC FOUNDATION, Cook Medical Technologies LLC

An endoluminal prosthesis may include a tubular main graft body including a sidewall and proximal and distal ends. A first stent may be positioned near the proximal end of the main graft body. A second stent may be positioned adjacent to and distal of the first stent. An opening in the sidewall may be positioned longitudinally between a peak of the first stent and a valley of the second stent. A tubular branch may be disposed in the opening. The branch may include first and second end openings. The branch may be flexibly orientable between a retrograde configuration in which the first end opening is oriented toward the distal end and the second end opening is oriented toward the proximal end and an antegrade configuration in which the first end opening is oriented toward the proximal end and the second end opening is oriented toward the distal end.

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Номер записи: 45
28-03-2013 дата публикации

VASCULAR ELASTANCE

Номер: US20130079871A1
Автор: Little Eric F., Scandurra John, Scorzelli Christopher, Vollmers Karl
Принадлежит: Regents of the University of Minnesota

A device includes a balloon and an interface. The balloon has an outer surface and a central lumen aligned on a longitudinal axis. The balloon is configured to receive a compressible fluid. The interface is coupled to the outer surface and has an external surface configured to bond with a tissue. 1. A device comprising:a balloon having an outer surface and a central lumen aligned on a longitudinal axis, the balloon configured to receive a compressible fluid; andan interface coupled to the outer surface and having an external surface configured to bond with a tissue.2. The device of wherein the balloon has a toroidal shape.3. The device of wherein the balloon includes a plurality of fenestrations.4. The device of wherein the balloon includes a plurality of inflatable elements distributed about the central lumen.5. The device of wherein the inflatable elements are aligned with the longitudinal axis.6. The device of wherein the interface including at least one of a scaffold or stent.7. The device of wherein the interface including a cylindrical sleeve.8. The device of wherein the external surface configured to enable endothelial cell development.9. The device of wherein the interface configured to provide a fluid-tight joint with the tissue.10. A device comprising:a core having a compliant member and a channel, the channel configured to receive a portion of an organ and the compliant member having a volume determined by fluid pressure in the channel; anda frame configured to receive the core an oppose expansion of the core.11. The device of wherein the core includes a cylindrical configuration and a longitudinal joint.12. The device of wherein the frame includes a tubular shell.13. The device of wherein the compliant member includes at least one of foam or a balloon.14. A device comprising:a chamber having an aperture and an impermeable wall, the aperture configured to couple with an organ; anda membrane sealably coupled to the aperture.15. The device of wherein the ...

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Номер записи: 46
04-04-2013 дата публикации

DRUG-IMPREGNATED BIODEGRADABLE STENT AND METHODS OF MAKING THE SAME

Номер: US20130084322A1
Автор: Wu Tim
Принадлежит: Tim Wu

The present invention relates to a drug-impregnated implantable medical device such as stent manufactured from polymers, and more particularly, biodegradable polymers including biodegradable polyesters. The invented medical devices include at least one therapeutic agent impregnated in at least one biodegradable polymer wherein at least a portion of the therapeutic agent in this polymer is crystalline. The device and methods to impregnated one or more therapeutic agents, where each therapeutics agent may be chosen from the following categories: immunosuppressant agents, anti-neoplastic agents and anti-inflammatory agents were disclosed. Other embodiments include methods of fabricating drug-impregnated implantable medical devices. 1. A drug-impregnated bioabsorbable stent , the stent , comprising: a stent body fabricated from a biodegradable polyester polymer and at least one therapeutic agent impregnated inside the biodegradable polymer stent body , wherein the at least a port of the therapeutic agent is crystallize. The therapeutic agent is selected from the groups consisting of immunosuppressant agent , anti-neoplastic agent , or/and anti-inflammatory agents.2. The stent of claim 1 , wherein said immunosuppressant agent is selected from the group consisting of sirolimus claim 1 , zotarolimus claim 1 , tacrolimus claim 1 , everolimus claim 1 , biolimus claim 1 , pimecrolimus claim 1 , supralimus claim 1 , temsirolimus claim 1 , TAFA 93 claim 1 , invamycin and neuroimmunophilins claim 1 , and combinations or analogs thereof.3. The stent of claim 1 , wherein said anti-neoplastic agent is selected from the group consisting of paclitaxel claim 1 , carboplatin claim 1 , vinorelbine claim 1 , doxorubicin claim 1 , gemcitabine claim 1 , actinomycin-D claim 1 , cisplatin claim 1 , camptothecin claim 1 , 5-fluorouracil claim 1 , cyclophosphamide claim 1 , 1-β-D-arabinofuranosylcytosine claim 1 , and combinations or analogs thereof.4. A stent of claim 1 , wherein aid anti- ...

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Номер записи: 47
04-04-2013 дата публикации

ELECTROSPUN PTFE COATED STENT AND METHOD OF USE

Номер: US20130085565A1
Автор: Dolmatch Bart, Eller Zeke, Hall John William, Kellar Robert S., Radford Robert J., Simmons Rachel Lynn
Принадлежит: Merit Medical System, Inc.

A stent or other prosthesis may be formed by coating a single continuous wire scaffold with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylene (PTFE). Electrospun PTFE of certain porosities may permit endothelial cell growth within the prosthesis. 1. A stent , comprising:a scaffolding structure configured to resist radial compression when disposed in a lumen of a patient, anda coating disposed on at least a portion of the scaffolding structure, the coating comprising a first layer of electrospun polytetrafluoroethylene (PTFE).2. The stent of wherein the stent further comprises a second layer of electrospun PTFE claim 1 , wherein the stent is generally tubular in shape and the first layer of electrospun PTFE is disposed such that it defines an inside surface of the stent and the second layer of electrospun PTFE is disposed such that it defines an outside surface of the stent.3. The stent of wherein the first layer of electrospun PTFE has an average pore size of between about 2 microns and about 8 microns.4. The stent of wherein the first layer of electrospun PTFE has an average pore size of between about 3 microns and about 5 microns.5. The stent of wherein the first layer of electrospun PTFE has an average pore size configured to permit the growth of endothelial cells on the inside surface of the stent.6. The stent of wherein the second layer of electrospun PTFE has an average pore size of about 1.5 microns or less.7. The stent of wherein the second layer of electrospun PTFE has an average pore size configured to resist tissue growth through the outside surface of the stent.8. The stent of claim 7 , further comprising a cuff adjacent an end of the stent claim 7 , the cuff configured to promote rapid cellular ingrowth into the cuff.9. The stent of wherein a tie layer is disposed between the first layer of electrospun PTFE and the second layer of electrospun PTFE.10. The stent of wherein the tie layer comprises PTFE.11. ...

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Номер записи: 48
11-04-2013 дата публикации

Polyethylene glycol/poly(butylene terephthalate) copolymer coated devices including EVEROLIMUS

Номер: US20130087270A1
Автор: Askaryar Homayon, Glauser Thierry, Hossainy Syed Faiyaz, Lin Qing, Tang Yiwen
Принадлежит:

Methods for making coatings on an implantable device such as a drug-eluting stent comprising a polymer and nano or microparticles of a drug in slow-dissolving polymorph, implantable devices produced by the methods and methods of using the coatings are provided. 111-. (canceled)12. A method of forming a coating on an implantable medical device , comprising:a) forming a coating comprising nano- or micro-particles of a drug in crystalline or partially crystalline form onto at least a portion of an implantable medical device, andb) wrapping the implantable medical device on top of the coating comprising the nano- or micro-particles of the drug with a sheet of a polymer; andc) heating the sheet of the polymer at a temperature above the glass transition temperature of the polymer to form a coating comprising the polymer on top of the nano- or micro-particles of the drug.1321-. (canceled)22. The method of claim 12 , wherein the polymer is selected from the group consisting of poly(ethylene glycol terephthalate)-co-poly(butylene terephthalate) claim 12 , hyaluronic acid claim 12 , poly(ethylene glycol) claim 12 , phosphoryl choline claim 12 , poly(amide ester) (PEA) claim 12 , poly(d claim 12 ,l-lactide) (DLPLA) claim 12 , polyhydroxyalkanoate (PHA) claim 12 , polycaprolactone (PCL) claim 12 , poly(vinylidene fluoride) (PVDF) claim 12 , poly(hexafluoro propylene) (HFP) claim 12 , poly(ethylene vinyl alcohol) claim 12 , and combinations thereof.2327-. (canceled)28. The method of claim 22 , wherein the drug is selected from the group consisting of ABT-578™ claim 22 , paclitaxel claim 22 , docetaxel claim 22 , paclitaxel derivatives claim 22 , tacrolimus claim 22 , pimecrolimus claim 22 , batimastat claim 22 , mycophenolic acid claim 22 , estradiol claim 22 , clobetasol claim 22 , dexamethasone claim 22 , rapamycin claim 22 , 40-O-(2-hydroxy)ethyl-rapamycin (everolimus) claim 22 , 40-O-(3-hydroxy)propyl-rapamycin claim 22 , 40-O-(2-hydroxy)ethoxy]ethyl-rapamycin claim 22 , 40- ...

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Номер записи: 49
11-04-2013 дата публикации

RADIALLY EXPANDABLE STENT

Номер: US20130090713A1
Автор: Nissl Thomas
Принадлежит:

The invention relates to a radially expandable vessel support () comprising a supporting body () having a plurality of longitudinally arranged ring segments as well as terminal supporting segments () and at least one terminal edge segment () arranged at a terminal supporting segment (), with the terminal supporting segments () having a meandering configuration with a multitude of supporting arches () and the edge segment or segments () having a plurality of relief arches (), with the number of the relief arches () being lower than the number of the supporting arches () and the relief arches () beginning at the peripheral/edge-situated reversal points () of the supporting arches (). 2108106. Stent according to claim 1 , characterized in that the number of the supporting arches () is an integer multiple of the number of relief arches ().3. Stent according to claim 2 , characterized in that the integer multiple is a number ranging between 2 and 5.4106114. Stent according to claim 1 , characterized in that neighboring relief arches () cross each other at points of intersection ().5106114. Stent according to claim 4 , characterized in that relief arches () are connected at the points of intersection ().6114120. Stent according to claim 4 , characterized in that the points of intersection () are formed in the shape of eyelets ().7114103104. Stent according to claim 4 , characterized in that the distance between points of intersection () and supporting segment () is lower than to the end of the edge segment ().8106116108124102. Stent according to claim 1 , characterized in that the relief arches () start and/or end at reversal points () of the supporting arches () which are provided with connecting elements () forming a junction with the central segments of the supporting body ().9124116108. Stent according to claim 8 , characterized in that the connecting elements () start at the inside of the reversal points () of the supporting arches ().10106122106116108. Stent ...

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Номер записи: 50
11-04-2013 дата публикации

NON-WOVEN MAT AND METHOD OF PRODUCING SAME

Номер: US20130090717A1
Автор: AJJI Abdellah, BUREAU Martin, MORENO Maria
Принадлежит: NATIONAL RESEARCH COUNCIL OF CANADA

A mat having a highly uniform porosity distribution is produced by consolidating 15 or more layers of melt blown webs (or the like) having different orientations. Control over the porosity is provided by using webs that exhibit a narrow, unimodal distribution of fiber diameters over the bulk of its distribution, such as in the top 80%. A compliance of the mats can be chosen by selecting a number and orientation of the webs. It is thus possible to produce mats that are good candidates for vascular grafts, for example. The uniformity of the porosity within the range of 6 μm to 30 μm permits seeding of the vascular graft with endothelial and smooth muscle cells. The mats have the demonstrated ability to retain, and support growth of, smooth muscle cells and endothelial cells. 121-. (canceled)22. A vascular graft comprising a mat formed as a cylinder , wherein the mat has a compliance close to that of a blood vessel , and wherein the mat is formed from 15 to 50 web sections of a same web stacked and compressed together , wherein:the web is formed of oriented, extruded polymer strands contact-fused at tangle points, the strands in a given web section being parallel to one another thereby defining an orientation of the given web section, the orientations of at least two web sections differing by an angle between 3° and 90°; andat least the smallest 80% of strands have a mean strand diameter between 2 and 4.5 μm with a standard deviation within 2 μm and strand diameters are unimodal with a regression coefficient measure of fit to a normal distribution of at least 0.96.23. The vascular graft according to wherein a luminal inner wall of the mat is seeded with endothelial cells claim 22 , and/or an abluminal outer wall is seeded with smooth muscle cells.24. The vascular graft according to wherein the inner wall of the cylindrical mat is covered with ingrown endothelial cells that retain their characteristic cell phenotype claim 23 , and/or the outer wall is covered with ...

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Номер записи: 51
11-04-2013 дата публикации

DEVICE FOR SPLINTING A CAVITY, ORGAN DUCT AND/OR VESSEL

Номер: US20130090720A1
Автор: MAHR RICHARD, PFEFFER JOACHIN GEORG
Принадлежит:

The invention relates to a device for splinting and/or maintaining a cavity, an organ duct and or a vessel in a human or animal body, said device including at least one compressible and self-expanding stent that is composed of at least three phases. 1. A device for the splinting and/or holding open of a cavity , organ duct and/or vessel in the human or animal body , the device comprising at least one stent which is compressible in a tube and is self-expanding , wherein the stent comprises at least three phases , wherein at least two of these phases are functional phases and at least one of these phases is a transition phase.2. The device according to claim 1 , wherein the two or more functional phases have different degrees of expansion and wherein the cavity claim 1 , organ duct and/or vessel is splinted and/or held open by those functional phases of the stent with the greater degree of expansion.3. The device according to claim 2 , wherein the functional phases of the stent comprise a distal phase and a proximal phase and the distal phase of the stent has a greater degree of expansion than the proximal phase.4. The device according to claim 3 , wherein the distal phase of the stent has a length of 0.5 cm to 20 cm claim 3 , the tube a length of 0.5 cm to 50 cm and the whole stent a length of 2 cm to 50 cm.5. The device according to claim 3 , wherein the distal phase-has a smaller degree of expansion than the proximal phase of the stent.6. The device according to claim 3 , wherein the stent has a net structure and/or a multiplicity of openings claim 3 , wherein the openings of the transition phase are larger than those of the functional phases.7. The device according to claim 3 , wherein the functional phases and the transition phases are made of at least one continuous wire claim 3 , fibre claim 3 , thread claim 3 , woven fabric or interlaid scrim.8. The device according to claim 7 , wherein the transition phase in each case at least two sections of the wire are ...

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Номер записи: 52
11-04-2013 дата публикации

Highly Flexible Stent and Method of Manufacture

Номер: US20130090721A1
Автор: Bales, Jahrmarkt Scott L., Jr. Thomas O., Kratsch Peter K., Slater Charles R.
Принадлежит: C. R. BARD, INC.

Preferred embodiments of a stent with a high degree of flexibility are shown and described. The stent can include a continuous helical winding having interconnected struts joined at vertices, and having bridges connecting sections of the helical winding to each other. An annular ring can be provided at one or both ends of the helical winding, and the annular ring can have extensions extending to connect to the helical winding. One of the extensions can connect to a bridge and another extension can connect to a vertex. The struts at the ends of the helical winding can have strut lengths that differ from the strut lengths of the struts in a central portion of the winding between the ends of the winding. 1. A method of manufacturing an implantable prosthesis , comprising:forming a first pattern defining a continuous helical winding having a plurality of circumferential sections circumscribing a longitudinal axis from a first end to a second end, the circumferential sections being spaced apart along the axis and including a plurality of struts joined together end-to-end, the end-to-end joining of two struts of the plurality of struts defining a vertex between the two struts, a plurality of bridges connecting one circumferential section to an adjacent circumferential section; andforming a second pattern defining an annular ring having a first extension and a second extension extending therefrom and connecting to the first or second ends of the continuous helical winding, the first extension connecting to an end vertex at the first or second end, the second extension connecting to one of the plurality of bridges, the annular ring including a plurality of struts with adjacent struts joined together.2. The method according to claim 1 , wherein the forming a first pattern comprises forming the plurality of bridges to have a minimum width greater than a width of any of the plurality of struts.3. The method according to claim 1 , wherein the forming a first pattern comprises ...

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Номер записи: 53
11-04-2013 дата публикации

MULTI-COMPONENT BIFURCATED STENT-GRAFT SYSTEMS

Номер: US20130090722A1
Автор: Benary Rafi, Shalev Alon
Принадлежит: ENDOSPAN LTD.

A multiple-component expandable endoluminal system for treating a lesion at a bifurcation including a self expandable tubular root member having a side-looking engagement aperture, a self expandable tubular trunk member comprising a substantially blood impervious polymeric liner secured therealong; both having a radially compressed state adapted for percutaneous intraluminal delivery and a radially expanded state adapted for endoluminal support. 1. A stent graft system comprising:a first component, which comprises a tubular structure, which comprises a first support element and a first covering element attached to said first support element, two sides of said first component being positionable, respectively, in first and second branches that branch from a main trunk of a subject, wherein said first covering element is shaped so as to define an opening arranged to face said main trunk; anda second component, which comprises a second support element and a second covering element attached to said second support element,wherein said second component comprises a proximal segment and a distal segment, said proximal segment being dimensioned to be anchorably disposed within said first component, such that said distal segment of said second component extends out of said first component through said opening,wherein a diameter of a distal section of said distal segment not disposed within said first component is greater than a diameter of said opening, andwherein said diameter of said distal section increases as said distal section exits from said opening.2. The stent graft system according to claim 1 , wherein said first component is adapted for transluminal delivery for transport to a site within a body lumen by being radially compressed from a larger cross-section to a smaller cross-section.3. The stent graft system according to claim 1 , wherein said second component is adapted for transluminal delivery for transport to a site within a body lumen by being radially ...

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Номер записи: 54
18-04-2013 дата публикации

Adjustable Support For Tubular Medical Device Processing

Номер: US20130091680A1
Автор: Adam K. Hoopai
Принадлежит: Abbott Cardiovascular Systems Inc

An apparatus and method for supporting a tubular medical device, such as a stent or scaffold, includes a rod disposed between two collets. The rod can be shaped to form a range of different size or length helical supports to support a wide range of tubular medical devices. The rod is shaped into a full or partial helix by rotating one of the collets relative to the other.

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Номер записи: 55
18-04-2013 дата публикации

PUMP AND METHOD FOR MIXED FLOW BLOOD PUMPING

Номер: US20130096364A1
Автор: Andriola Peter, Briana Stephen G., Eldridge David Gary, Hodges William V., le Blanc Pieter W.C.J., Petersen Ethan, Reichenbach Steven H., Woo Yi-Ren
Принадлежит:

A blood pump includes a hub having an axis of rotation and a generally cylindrical shape. The hub has an upstream end region, a central region, and a downstream end region, and the hub includes a magnetic material. Blades that are disposed on the downstream end region of the hub extend downstream of the hub. 1. A blood pump comprising:a hub having an axis of rotation and a generally cylindrical shape, the hub having an upstream end region, a central region, and a downstream end region, the hub including a magnetic material; and an upstream portion that is located proximate the hub and is configured to add energy to fluid having forward flow along the axis of the hub, and', 'a downstream portion that is configured to add energy to the fluid having forward flow in a direction radially outward from the hub., 'blades located at the downstream end region of the hub, the blades extending downstream of the hub, each blade including'}2. The blood pump of claim 1 , wherein the downstream portions of the blades extend radially outward from the hub.3. The blood pump of claim 1 , wherein the blood pump includes a housing claim 1 , and the hub is suspended within the housing by fore and aft bearings.4. The blood pump of claim 1 , wherein the central region and the upstream end region are devoid of blades.5. The blood pump of claim 1 , further comprising:a housing defining an inlet, an outlet, and a flow path from the inlet to the outlet; anda motor stator disposed within the housing.6. The blood pump of claim 5 , further comprising stator blades disposed within the flow path proximate the upstream end region of the hub claim 5 , the stator blades being coupled to an upstream bearing component for supporting the upstream end region of the hub.7. The blood pump of claim 5 , further comprising a downstream bearing component for supporting the downstream end region of the hub claim 5 , the downstream bearing component being located proximate the downstream end region of the hub and ...

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Номер записи: 56
18-04-2013 дата публикации

Method and apparatus for treating a patient by intentionally occluding a blood vessel, including method and apparatus for inducing weight loss in a patient by intentionally occluding the celiac artery

Номер: US20130096580A1
Автор: Reynolds M. Delgado, William E. Cohn
Принадлежит: Reynolds M. Delgado, William E. Cohn

A method for inducing weight loss in a patient, the method comprising: intentionally occluding a blood vessel so as to create hypoperfusion in a gastrointestinal organ serviced by the blood vessel, whereby to interfere with normal gastrointestinal function and thereby induce weight loss in a patient.

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Номер записи: 57
18-04-2013 дата публикации

OPTIMAL RATIO OF POLAR AND BENDING MOMENT OF INERTIA FOR STENT STRUT DESIGN

Номер: US20130096668A1
Автор: ABUNASSAR CHAD
Принадлежит: Abbott Cardiovascular Systems Inc.

An intravascular stent is provided to be implanted in coronary arteries and other body lumens. The transverse cross-section of at least some of the stent struts have a ratio of polar and bending moments of inertia, which results in optimal resistance to stent twisting. This resistance to twisting ratio for the stent struts minimizes out of plane twisting of the struts or projecting edges of the struts when the stent is expanded from a compressed diameter to an expanded diameter in a coronary artery. 117-. (canceled)18. A stent , comprising:an elongated tubular member having struts forming a stent pattern comprising cylindrical rings connected by links;the struts having a transverse cross-section that is a four sided polygon, a first side and a second side are opposite each other and have the same length;a third side and a fourth side are opposite each other and spaced apart by a distance h;the first side and second side are not parallel to each other and the third side and the fourth side are parallel to each other; andthe lengths of the first side, second side, third side and fourth side are selected so that a ratio of twisting resistance to bending resistance in the struts is 1.51.19. The stent of claim 18 , wherein the third side is shorter than the fourth side and forms an inner surface of the elongated tubular member.20. The stent of claim 19 , wherein the fourth side forms an outer surface of the elongated tubular member.21. The stent of claim 18 , wherein the third side is shorter than the first side and the second side.22. The stent of claim 18 , wherein the fourth side is longer than the first side and the second side.23. The stent of claim 18 , wherein certain lengths of the fourth side range from 0.0045 inch to 0.0054 inch and certain lengths of the third side range from 0.0032 inch to 0.0045 inch claim 18 , to provide the ratio of twisting resistance to bending resistance of 1.51.24. The stent of claim 23 , wherein certain lengths of the first side and ...

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Номер записи: 58
18-04-2013 дата публикации

Expandable Medical Implant

Номер: US20130096670A1
Автор: Goetz Wolfgang, Lim Hou-Sen
Принадлежит: Transcatheter Technologies GmbH

An implant includes at least one supporting arrangement which is suited for supporting the implant at or on an implantation position, wherein both the supporting arrangement and the implant are expandable from a first diameter to a second diameter and/or are collapsible from the second diameter to the first diameter. The supporting arrangement includes bars which are connected to each other by means of connecting sections and at least one post for connecting the supporting arrangement with at least one other structure of the implant. At least two of the connecting sections differ in at least one material characteristic, for example, thickness. 1. An implant comprising:at least one supporting arrangement which is suited for supporting the implant at or on an implantation site, wherein both the supporting arrangement and the implant are expandable from a first diameter to a second diameter and/or are collapsible from the second diameter to the first diameter, wherein the supporting arrangement comprises:bars which are connected to each other, by means of connecting sections; andat least one post for connecting the supporting arrangement with at least one other structure of the implant, wherein at least two of the connecting sections differ in at least one material or one geometrical characteristic.2. An implant according to claim 1 , wherein the material or the geometrical characteristic is a thickness of at least one section of the connecting sections.311. An implant according to claim 1 , wherein a first connecting section having the smallest distance to a post has a first thickness d claim 1 , wherein thickness d is the smallest thickness of all thicknesses of the connecting sections.4221. An implant according to claim 3 , wherein a second connecting section having the next smaller distance to the post has a second thickness d claim 3 , wherein thickness d is larger than thickness d.5332. An implant according to claim 3 , wherein a third connecting section having ...

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Номер записи: 59
18-04-2013 дата публикации

NON-CIRCULAR ESOPHAGEAL STENTS AND DELIVERY SYSTEMS

Номер: US20130096692A1
Автор: Baron, SR. Todd H., Topazian Mark D., Wong Kee Song Louis-Michel
Принадлежит: Mayo Foundation for Medical Education and Research

Stents that have non-circular cross-sectional profiles and systems for delivering the stents are described herein. 1. An esophageal stent comprising:a body member comprising a first end, a second end, and a length along a longitudinal axis extending between the first end and the second end;wherein the body member has a delivery configuration and a deployed configuration, wherein the body member is expandable from the delivery configuration to the deployed configuration;and wherein, in the deployed configuration, the stent comprises a non-circular cross-sectional profile in the absence of any external constraints acting on the stent, wherein the cross-sectional profile is determined in a plane transverse to the longitudinal axis, and wherein the cross-sectional profile defines a major axis extending across a maximum dimension of the cross-sectional profile and a minor axis transverse to the major axis at a midpoint of the major axis, wherein the body member is larger across the major axis than across the minor axis.2. A stent according to claim 1 , wherein the non-circular cross-sectional profile is substantially uniform along substantially the entire length of the body member.3. A stent according to claim 1 , wherein the non-circular cross-sectional profile comprises an oval or elliptical cross-sectional profile.4. A stent according to claim 1 , wherein the body member comprises a first major axis in a first cross-sectional profile obtained at a first location proximate the first end of the body member and a central major axis in a central cross-sectional profile obtained at a central location proximate a midpoint of the length of the body member claim 1 , wherein the body member is larger across the first major axis than across the central major axis.5. A stent according to claim 4 , wherein the body member comprises a first minor axis in the first cross-sectional profile and a central minor axis in the central cross-sectional profile claim 4 , wherein the body ...

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Номер записи: 60
18-04-2013 дата публикации

VACUUM PUMP SYSTEMS FOR PROSTHETIC LIMBS AND METHODS OF USING THE SAME

Номер: US20130096694A1
Автор: Caldwell Ryan J., Chen Wei, Hansen Andrew H., Kuhar Bennett E., Nelson Andrew J., NICKEL Eric, Radcliffe Regan A., Wood Sean M., Yngve Kevin A.
Принадлежит: Northwestern University

Pump systems for use in suspension of a prosthetic device from a residual limb and methods of suspending a prosthetic device from a residual limb are disclosed. The pump systems include a mechanically activated pump having a first compression member coupled to a second compression member, a compressible bladder disposed between the first and second compression members, and coupling elements that engage and couple together the first and second compression members. The mechanically activated pump may be connected with an electrically activated pump within a fluid circuit of a hybrid pump system to provide vacuum engagement between a prosthetic device and a residual limb. 1. A pump system for use in suspension of a prosthetic device from a residual limb comprising:a mechanically activated pump having a first compression member coupled to a second compression member;a compressible bladder disposed between the first and second compression members; andcoupling elements that engage and couple together the first and second compression members, wherein all of the coupling elements are disposed about an outer perimeter of the compressible bladder.2. The pump system in accordance with claim 1 , wherein the bladder is coupled within a fluid circuit that is configured to provide vacuum engagement with the residual limb.3. The pump system in accordance with claim 2 , wherein the pump system is incorporated into a prosthetic device that further comprises a socket that is configured to receive the residual limb and the fluid circuit is connected to the socket.4. The pump system in accordance with claim 3 , wherein the prosthetic device further comprises a knee joint claim 3 , and the socket is configured to receive a transfemoral residual limb with the mechanically activated pump being positioned above the knee joint of the prosthetic device.5. The pump system in accordance with claim 3 , wherein the socket is configured to receive a transtibial residual limb.6. The pump system in ...

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Номер записи: 61
25-04-2013 дата публикации

Methods for Making a Supported Graft

Номер: US20130102839A1
Автор: Banas Christopher E., Edwin Tarun J., Kowligi Rajagopal R., McCrea Brendan
Принадлежит: BARD PERIPHERAL VASCULAR, INC.

A method for preparing a stent-graft for intraluminal delivery, including positioning an expanded polytetrafluoroethylene (ePTFE) substrate over a support mandrel, coupling a shape memory member to a polymer cladding to form a polymer clad member, winding the polymer clad member in an overlapping helical manner onto a surface of the ePTFE substrate, joining and sealing adjacent overlapping regions of the polymer clad member together and to the surface of the ePTFE substrate to form a stent-graft, manipulating the stent-graft from a larger first diameter to a smaller second diameter, and loading the stent-graft into a restraining sheath at the smaller second diameter. 1positioning an expanded polytetrafluoroethylene (ePTFE) substrate over a support mandrel;coupling a shape memory member to a polymer cladding to form a polymer clad member;winding the polymer clad member in an overlapping helical manner onto a surface of the ePTFE substrate;joining and sealing adjacent overlapping regions of the polymer clad member together and to the surface of the ePTFE substrate to form a stent-graft;manipulating the stent-graft from a larger first diameter to a smaller second diameter; andloading the stent-graft into a restraining sheath at the smaller second diameter.. A method for preparing a stent-graft for intraluminal delivery, comprising: This application is a continuation of U.S. patent application Ser. No. 13/434,472, filed Mar. 29, 2012, which is a continuation of U.S. patent application Ser. No. 12/546,483, filed Aug. 24, 2009, now U.S. Pat. No. 7,578,899, which is a continuation of U.S. patent application Ser. No. 11/429,849, filed May 8, 2006, now U.S. Pat. No. 7,578,899, which is a continuation of U.S. patent application Ser. No. 10/431,685, filed May 8, 2003, now U.S. Pat. No. 7,060,150, which is a divisional of U.S. patent application Ser. No. 09/855,918, filed May 15, 2001, now abandoned, which is a divisional of U.S. patent application Ser. No. 08/999,583, filed ...

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Номер записи: 62
25-04-2013 дата публикации

METHOD AND APPARATUS FOR ENDOVASCULAR THERAPY OF AORTIC PATHOLOGY

Номер: US20130103132A1
Автор: Madjarov Jeko Metodiev
Принадлежит: THE CHARLOTTE-MECKLENBURG HOSPITAL AUTHORITY d/b/a CAROLINAS HEALTHCARE SYSTEM

Assemblies, devices, and methods for positioning the same proximate a target site within a body lumen are provided. The assembly includes first and second components that can function independently of one another to address a patient's vascular abnormalities or can cooperate to form an assembly. The assembly is designed to address aortic pathologies near clusters of arterial branches in a way that allows blood to continue flowing to the arterial branches during the procedure while providing an adequate landing zone for the adjoining component. One of the components may include a tapered portion near one end that can be received by a corresponding end of the other component. Alternatively, one of the components may include an invaginated end that is able to receive a corresponding end of the other component such that the position of each component is substantially fixed with respect to the other. 1. A vascular assembly for treating a target site within a body lumen comprising:a first component defining a first end, a second end, and a lumen extending therebetween; anda second component defining a first end, a second end, and a lumen extending therebetween, wherein the second end of the second component is configured to receive the second end of the first component,wherein the first component is configured to engage an inner surface of a vessel wall proximate a first group of arterial branches at the target site,wherein the second component is configured to engage an inner surface of the vessel wall proximate a second group of arterial branches at the target site, andwherein each of the first and second components is independently deployable to the target site and is configured for use at the target site both independently of the other component and in cooperation with the other component.2. The vascular assembly of claim 1 , wherein the second end of at least one of the first and second components has a smaller inner diameter than the first end of the respective ...

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Номер записи: 63
25-04-2013 дата публикации

ENDOGRAFTS FOR PARALLEL ENDOLUMINAL GRAFTS

Номер: US20130103134A1
Автор: Minion David J.
Принадлежит:

An endograft is provided for a blood vessel having a branch extending from said blood vessel, including a body having a wall defining a lumen and an exterior surface. The endograft body includes a first portion defining or being made to define a non-circular cross-sectional dimension, and a second portion defining a circular cross-sectional dimension. Modular systems including the endograft and methods for creating endografts according to the disclosure are described also. 1. A modular endograft system for deploying in a lumen , comprising:at least two endografts for disposing alongside or parallel one to another for at least a portion of a longitudinal dimension thereof, at least said parallel portion of at least one of the at least two endografts defining or being made to define a non-circular cross-sectional dimension including a surface having a shape substantially conforming to a shape of an inner surface of said lumen;whereby apposition of an outer surface of the at least two stent grafts one to another and to said inner luminal surface is facilitated.2. The modular endograft system of claim 1 , wherein the lumen is a blood vessel.3. The modular endograft system of claim 1 , wherein the lumen is a prosthetic device.4. The modular endograft system of claim 1 , wherein the non-circular cross-sectional dimension defines or is made to define a two-dimensional shape that is one of a lens claim 1 , a crescent claim 1 , and a circular segment.5. The modular endograft system of claim 1 , wherein the non-circular cross-sectional dimension comprises two segments joined at each end by first and second convex vertices;further wherein at least one of said segments defines a shape substantially conforming to an arc defined by to a segment of said the inner surface of said lumen.6. The modular endograft system of claim 1 , including a plurality of apposing endografts for deploying together as a unit claim 1 , the plurality of endografts defining or being made to define a non ...

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Номер записи: 64
25-04-2013 дата публикации

FENESTRATED INFLATABLE GRAFT

Номер: US20130103135A1
Автор: Vinluan Jenine S.
Принадлежит: TRIVASCULAR, INC.

The endovascular graft includes a tubular structure having a first end and a second end. The tubular structure has a wall which defines a lumen between the first and second ends. A fenestration is located between the first and second ends to extend through the wall of the tubular structure. A sealing ring is circumferentially disposed within or on, including without limitation secured to, the tubular structure. The sealing ring is adjacent to the fenestration. The sealing ring may be inflatable. 1. An endovascular graft comprising:a tubular structure having a first end and a second end, said tubular structure having a wall which defines a lumen between said first end and said second end;a fenestration located between said first end and said second end to extend through said wall of said tubular structure; anda sealing ring circumferentially disposed within or on to said tubular structure, said sealing ring being adjacent to said fenestration.2. An endovascular graft according to claim 1 , wherein said sealing ring is upstream of said fenestration and defines a proximal sealing ring claim 1 , said proximal sealing ring being inflatable claim 1 ,said endovascular graft further comprising a distal sealing ring circumferentially disposed within or on said tubular structure, said distal sealing ring being adjacent to and downstream of said fenestration, said distal sealing ring being inflatable,said proximal sealing ring and said distal sealing ring being connected to one another for communication there between such that inflation of one of said proximal sealing ring and said distal sealing ring provides inflation of the other of said proximal sealing ring and said distal sealing ring.3. An endovascular graft according to claim 2 , and further comprising a channel disposed within or on said tubular structure claim 2 , said channel being connected to said proximal sealing ring and said distal sealing ring in communication therewith to provide said communication between ...

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Номер записи: 65
25-04-2013 дата публикации

ARTIFICIAL BLOOD VESSEL AND ACCESS PORT OF ARTIFICIAL BLOOD VESSEL

Номер: US20130103136A1
Автор: Asano Takuji, Kinoshita Yoshihiko, Yokoyama Daisuke
Принадлежит: NIKKISO CO., LTD.

An artificial blood has a trunk portion with both ends connected to blood vessels, and access branch portions and a shunt branch portion branched from the trunk portion. The access branch portions are disposed with a solid column-shaped access port that plugs these branch portions. The access port has a solid center portion and a tube-shaped peripheral portion disposed to surround the center portion. The peripheral portion is harder than the center portion and prevents the needle from deviating from the inside of the center portion. This enables a puncture to be easily made in a therapy in which a puncture is highly frequently made in a blood vessel. 1. An access port disposed in a branch portion of an artificial blood vessel ,the access port having a column shape, comprising:a solid center portion into which a needle leading out liquid from a body or introducing the liquid into the body is inserted, the center portion being disposed along an axis of the column shape; anda peripheral portion that has a tube shape surrounding the center portion, the peripheral portion being harder than the center portion.2. The access port of claim 1 , wherein the peripheral portion has a tube-shaped inner wall surface formed into a taper shape tapered toward an end along a direction of insertion of the needle.3. The access port of claim 1 , wherein the peripheral portion has a concavo-convex portion formed on at least a portion of an outer circumference surface.4. The access port of claim 2 , wherein the peripheral portion has the concavo-convex portion formed on at least a portion of the outer circumference surface.5. The access port of claim 1 , wherein the peripheral portion has an outer circumference covered by an artificial blood vessel material.6. The access port of claim 2 , wherein the peripheral portion has the outer circumference covered by the artificial blood vessel material.7. The access port of claim 3 , wherein the peripheral portion has an outer circumference covered ...

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Номер записи: 66
25-04-2013 дата публикации

ARTIFICIAL BLOOD VESSEL

Номер: US20130103137A1
Автор: Asano Takuji, Kinoshita Yoshihiko, Yokoyama Daisuke
Принадлежит: NIKKISO CO., LTD.

An artificial blood vessel has a trunk portion which forms a part of the blood vessel and also has branch portions which are branched from the trunk portion. The branch portions are provided with access ports into which a needle, for discharging liquid out of a human body or introducing the liquid into the human body, is inserted. Tubular reinforcement members integrated with the blood vessel wall of the trunk portion are disposed at positions of the trunk portion, the positions being those from which the branch portions are branched, and at portions adjacent to the positions of the trunk portion. A lateral force at the time of needle insertion is borne by the reinforcement member, and this prevents the trunk portion from deforming. Thus, the configuration prevents the artificial blood vessel from deforming due to a force applied when a needle for discharging liquid from a human body or introducing the liquid into the human body is inserted into an access port of the artificial blood vessel. 1. An artificial blood vessel , comprising:a trunk portion which forms a part of the blood vessel; anda branch portion branched from the trunk portion and in which an access port, into which a needle for extracting a fluid from the body or introducing the fluid into the body is inserted, is placed, whereinthe trunk portion comprises a tubular reinforcement member integrated with a blood vessel wall of the artificial blood vessel, placed at a position where the branch portion branches and an adjacent portion thereto, and having rigidity to prevent closure of the artificial blood vessel when a lateral force is applied, wherein the blood vessel wall of a portion where the reinforcement member is placed has two layers including an inner wall and an outer wall, the reinforcement member is sandwiched between the inner wall and the outer wall, and the reinforcement member is not exposed to the outside, andat an edge of an opening of the reinforcement member, the blood vessel walls of ...

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Номер записи: 67
25-04-2013 дата публикации

Prosthetic Attachment Techniques

Номер: US20130103166A1
Автор: Butler Nickolas, DeRohan Robert J., Garrett Scott, Griebel Matthew Alexander
Принадлежит: The Quality of Life Plus (QL+) Program

Prosthetic attachment techniques, systems, and apparatus are described including those having so called Chinese Finger Trap features. 1. A prosthetic attachment system comprising:a woven sleeve adapted to fit an appendage; andan attachment for connecting the woven sleeve to a prosthetic leg.2. The prosthetic attachment system of claim 1 , wherein the woven sleeve is configured as a Chinese finger trap.3. The prosthetic attachment system of claim 1 , wherein the attachment comprises a hinge configured to be set in a selectable one of two positions. This application claims the benefit of U.S. Provisional Application No. 61/475,186 entitled “Prosthetic Attachment Techniques” filed 13 Apr. 2011; this application is related to U.S. Provisional Application No. 61/452,618 entitled “Obstacle Detection for Visually Impaired Persons” filed 14 Mar. 2011; U.S. Provisional Application No. 61/453,040 entitled “Obstacle Detection for Visually Impaired Persons” filed 15 Mar. 2011; U.S. Provisional Application No. 61/476,316 entitled “Polygrasp Prosthetic Hand, Dual Mode Actuation, and Analog Myoelectric Interface” filed 17 Apr. 2011; U.S. Provisional Application No. 61/480,964 entitled “Blind Driver Challenge” filed 29 Apr. 2011; U.S. Provisional Application No. 61/492,584 entitled “Wheelchair Transfer Assist” filed 2 Jun. 2011; U.S. Provisional Application No. 61/492,432 entitled “Assistive Stair Climbing Device” filed 2 Jun. 2011; U.S. Provisional Application No. 61/492,501 entitled “Technological Advancement for Vehicles Operable by the Visually Impaired” filed 2 Jun. 2011; U.S. Provisional Application No. 61/492,584 entitled “Wheelchair Transfer Assist” filed 2 Jun. 2011; U.S. Provisional Application No. 61/501,035 entitled “Device for Assisted Entry For An Excavator” filed 24 Jun. 2011; U.S. Provisional Application No. 61/503,961 entitled “Prosthetic System for Foot, Ankle, and Tibia”” filed 1 Jul. 011; U.S. Provisional Application No. 61/569,273 entitled “SCUBA Prosthesis” ...

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Номер записи: 68
02-05-2013 дата публикации

EVERSIBLE LOCKING MECHANISM FOR MODULAR STENTS

Номер: US20130110224A1
Автор: Thistle Robert C., White James B.
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

The present invention provides an apparatus and method for locking self-expanding modular stent components together using an eversible extension on the male component. The male component is deployed partially within the female component, and with the eversible extension eversed over the male component. 1. A locking mechanism for use in a modular self-expanding stent system having a male stent component configured to be deployed partially within a lumen of a female stent component; said locking mechanism comprising an eversible stent extension extending from said male stent component and deployable within said female stent component in an eversed configuration to lock said male stent component to said female stent component.2. The locking mechanism of further comprising a covering attached to said modular stent components to form a modular stent-graft.3. The locking mechanism of wherein said modular stent-graft is configured for deployment in an abdominal aorta claim 2 , spanning the aortic bifurcation.4. The locking mechanism of wherein said eversible stent extension is outwardly flared.5. The locking mechanism of wherein said male stent component comprises one or more braided filaments.6. The locking mechanism of wherein said eversible extension is formed by continued braiding of one or more of said braided filaments.7. The locking mechanism of wherein a covering is lashed to said male stent to former a stent-graft and said eversible extension extends beyond said covering.8. The locking mechanism of claim 1 , further comprising a delivery sheath used to temporarily hold said eversible stent extension in said eversed configuration. This application is a Divisional of U.S. patent application Ser. No. 11/446,687, filed Jun. 5, 2006, which is a Divisional of U.S. patent application Ser. No. 10/435,190, filed on May 9, 2003, now Abandoned, both of which are herein incorporated by reference.This invention relates generally to luminal stents, and more particularly to a ...

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Номер записи: 69
02-05-2013 дата публикации

Systems and Methods for Magnetized Stent Having Growth-Promoting Properties

Номер: US20130110225A1
Автор: JR. Teodoro Aclan, Tigno
Принадлежит: The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc.

Embodiments relate to systems and methods for magnetized stent having growth-promoting properties. A stent assembly comprising a tubular elongated body having a magnetized region and a tissue nidus area is inserted beneath the orifice of a vascular aneurysm. The magnetic region can serve to attract and position both residual red blood cells and magnetically nano-ireated growth-promoting cells to the orifice area of the aneurysm. The outer circumference of the tubular elongated body can act as a floor or scaffold for regenerated smooth vascular muscle cells. In embodiments, the tissue nidus area can be provided on the exterior stent, while the magnetized region is provided on the interior stent, of a stent-in-stent structure. In embodiments, the exterior stent is made of biodegradable material which gradually dissolves or dissipates in situ. 1. A stent assembly , comprising: a tissue nidus area positionable underneath an orifice of a vascular aneurysm; and', 'a magnetized region, alignable with the tissue nidus area, for applying a magnetic field to the orifice of the vascular aneurysm to promote tissue growth across the orifice., 'a tubular elongated body having an inner and outer surface, wherein the tubular elongated body comprises2. The stent assembly of claim 1 , wherein the tissue nidus area and the magnetized region are located on the outer surface of the tubular elongated body.3. The stent assembly of claim 2 , wherein the magnetized region comprises a magnetized region on the outer surface of the tubular elongated body extending over a portion of the circumference of the tubular elongated body.4. The stent assembly of claim 3 , wherein the portion of the circumference comprises at most one half of the circumference.5. The stent assembly of claim 4 , wherein the portion of the circumference comprises a circumscribed area corresponding to that of the orifice.6. The stent assembly of claim 1 , in which the tubular elongated body comprises an expandable tubular ...

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Номер записи: 70
09-05-2013 дата публикации

Composite Medical Textile Material and Implantable Devices Made Therefrom

Номер: US20130116768A1
Автор: Rakos Ronald, Sowinski Krzysztof
Принадлежит:

An implantable composite medical device having a longitudinal length a woven textile portion having yarns interlaced in a woven pattern, a knitted textile portion having yarns interlooped in a knitted pattern. The woven and knitted portions are securably attached to one and the other to provide a composite woven and knitted textile surface along the longitudinal length of the device. The woven portion may have a permeability from about 30 to about 500 ml/min/cm, and the knitted portion may have a permeability from about 30 to about 15,000 ml/min/cm. Further, a crimped woven portion with a resiliently longitudinal stretchability from about 10 to about 100 linear percent over its quiescent longitudinal dimension or an uncrimped woven portion with a resiliently longitudinal stretchability of less than about 10 linear percent over its quiescent longitudinal dimension are useful. A knitted portion with a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension is also useful. 168-. (canceled)69. An implantable composite medical device comprising:a self-expanding stent comprising a first tubular body;a knitted textile portion comprising a first plurality of yarns interlooped ina knitted pattern, at least a portion of the knitted textile portion disposed around the self-expanding stent;a balloon expandable stent comprising a second tubular body; anda woven textile portion attached to an end of the knitted textile portion, the woven textile portion comprising second plurality of yarns interlaced in a woven pattern, at least a portion of the woven textile portion disposed around the balloon expandable stent.70. The medical device of wherein the second tubular body of the balloon expandable stent defines a plurality of slots.71. The medical device of wherein the first tubular body of the self-expanding stent comprises a braided wire.72. The medical device of wherein the second tubular body of the balloon ...

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Номер записи: 71
09-05-2013 дата публикации

INTRAVASCULAR STENT AND METHOD OF USE

Номер: US20130116769A1
Автор: Limon Timothy
Принадлежит: Advanced Cardiovascular Systems, Inc.

An expandable stent is implanted in a body lumen, such as a coronary artery, peripheral artery, or other body lumen for treating an area of vulnerable plaque. The invention provides for a an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. A central section is positioned between distal and proximal sections and is aligned with the area of vulnerable plaque to enhance growth of endothelial cells over the fibrous cap of the vulnerable plaque to reinforce the area and reduce the likelihood of rupture. 152-. (canceled)53. An intravascular stent for use in a body lumen , comprising:a distal section, a proximal section, and a central section positioned between the distal section and the proximal section, each section being aligned along a common longitudinal axis forming the stent;the distal section and the proximal section having cylindrical rings, wherein the distal section includes all cylindrical rings distal to the central section and the proximal section includes all cylindrical rings proximal to the central section and wherein all cylindrical rings in the distal and proximal section have a first longitudinal length, and the central section consisting of a single cylindrical ring having a second longitudinal length, the first longitudinal length being shorter than the second longitudinal length;the distal section and the proximal section having a first strut pattern having a first radial thickness, and the central section having a second strut pattern having a second radial thickness that is less than the first radial thickness; andthe second strut pattern having a substantially uniform repeating series of struts that form the single cylindrical ring of the central section wherein each strut is directly attached to an adjacent strut to ...

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Номер записи: 72
09-05-2013 дата публикации

PROSTHESIS HAVING PIVOTING FENESTRATION

Номер: US20130116775A1
Автор: Hartley David E., Huser Matthew S., Roeder Blayne A.
Принадлежит:

The present disclosure relates to an endoluminal prosthesis, such as a stent graft that includes one or more fenestrations to accommodate endovascular disease, such as an aneurysm in cases where one or more side branches is involved. In one aspect, the prosthesis includes fenestrations that are pivotable to accommodate the dynamic geometry of the aortic branches. In another aspect, the pivotable fenestrations include a first perimeter, a band of flexible material attached and surrounding the first perimeter, and a second perimeter attached to and surrounding the band of flexible material. The first perimeter, band of flexible material, and second perimeter have a geometric shape. In one aspect, the prosthesis includes at least three pivotable fenestrations. 1. An endoluminal prosthesis , comprising:a graft having a tubular body and a surface comprising a first biocompatible material;a stent frame having a plurality of stent units attached to the graft about the surface of the graft and arranged in longitudinally spaced rows, at least one of the stent units comprising a plurality of struts interconnected by apices;at least three fenestrations disposed through a sidewall of the graft, each fenestration having a diameter;a first perimeter having a first diameter and surrounding each of the fenestrations;each first perimeter having a band of flexible material attached to and surrounding the perimeter, the band of flexible material having a depth relative to a surface plane of the tubular body; andeach band of flexible material having a second perimeter attached to and surrounding the band of flexible material;where the first perimeters, the bands of flexible material, and the second perimeters have a geometric shape,where each fenestration is pivotable in any direction away from an axis perpendicular to a longitudinal axis of the prosthesis, andwhere at least two of the fenestrations are positioned on opposing sides of the graft.2. The prosthesis of claim 1 , where the ...

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Номер записи: 73
16-05-2013 дата публикации

Prevention of Bacterial Adherence and Growth in an Urological Implant

Номер: US20130123756A1
Автор: Eberli Daniel, Gabi Michael, Hefermehl Lukas, Lar-Magnac Alexandre, Voros Janos
Принадлежит:

A medical device is disclosed, which comprises a functional unit (C) for permanent or temporary placement in the urogenital tract of a human or animal body. The functional unit has at least one electrically conducting portion. A power source (G) supplies a current to the electrically conducting portion after placement of the functional unit in the urogenital tract. In this manner, the growth of bacteria on the functional unit can be reduced. 1. A medical device comprising:a functional unit for permanent or temporary placement in the urogenital tract of a human or animal body, the functional unit having at least one electrically conducting portion; anda power source operable to supply a voltage and/or current to the electrically conducting portion after placement of the functional unit in the urogenital tract in a manner effective to reduce the growth of bacteria and/or encrustation on the functional unit.2. The device of claim 1 , wherein the power source is operable to supply said current in a manner to generate a surface current density between 10 nA/mmand 10′000 nA/mm2 between a surface of said functional unit and environmental body material.31. The device of claim 1 , wherein the power source is operable to supply said current as an alternating current with a frequency below kHz.4. The device of claim 1 , wherein the power source is operable to supply the current with a predetermined single polarity claim 1 , the functional unit acting as an anode for said current.5. The device of claim 1 , wherein the functional unit is a Foley catheter claim 1 , a ureteric stent claim 1 , a prostatic stent or a nephrostomy catheter.6. The device of claim 1 , wherein the power source comprises a battery to be placed inside the human or animal body.7. The device of claim 1 , wherein the power source comprises:an energy transmitter to be placed outside the human or animal body, the energy transmitter being operable to transmit energy from outside the body to a location inside the ...

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Номер записи: 74
16-05-2013 дата публикации

IMPLANT ASSEMBLY WITH TACTILE INDICATOR

Номер: US20130123900A1
Автор: Eblacas Julio E., Elkins Linda N., Witort William P.
Принадлежит: W. L. Gore & Associates, Inc.

The present disclosure describes an assembly comprising an expandable device, a restraining member wrapped circumferentially around the device, a coupling member releasably securing the restraining member, and at least one tactile indicator located on the assembly at a desired point of partial deployment, along with a method for partially deploying the expandable device in a patient. During partial deployment of the expandable device, the coupling member is tensioned and displaced from outside the patient by a clinician, and upon reaching the tactile indicator, a change in tension on the coupling member is felt my the clinician performing the procedure. 1. An assembly comprising:an expandable device;a restraining member wrapped circumferentially around said device and having opposing edges;an elongated coupling member releasably coupling the opposing edges of the restraining member into a releasable seam; andat least one tactile indicator located on the assembly at a desired point of partial deployment of said device.2. The assembly of claim 1 , wherein said tactile indicator comprises a slack loop configured in said elongated coupling member.3. The assembly of claim 1 , wherein said tactile indicator comprises a disengaged portion further comprising a slack loop interwoven with said elongated coupling member.4. The assembly of claim 1 , wherein said device comprises an endoluminal prosthesis.5. The assembly of claim 1 , wherein said device is at least one of a graft claim 1 , a stent claim 1 , or a stent-graft.6. The assembly of claim 1 , wherein said device is self-expandable.7. The assembly of claim 1 , wherein said device is balloon expandable.8. The assembly of claim 1 , comprising more than one expandable device.9. The assembly of claim 1 , comprising more than one restraining member.10. The assembly of claim 9 , wherein the at least one tactile indicator is located on the assembly between any two adjacent restraining members.11. The assembly of claim 1 , ...

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Номер записи: 75
16-05-2013 дата публикации

MODULAR GRAFT COMPONENT JUNCTIONS

Номер: US20130123902A1
Автор: Chuter Timothy A.M., Eckert Robin W., Escano Arnold M., Farahani Shahrokh R., Fitz Matthew J., Hayashi Reid K., IANCEA Octavian, Newhauser Richard, Perez Juan I., Pollock David T., Tesar Aleta
Принадлежит: Endovascular Technolodies, Inc.

The present invention embodies an endovascular graft having an attachment frame connection mechanism that allows placement of the main body component in vasculature in combination with limb components. Various limb component-to-main body component attachment mechanisms are provided which ensure a reliable bond while facilitating a smaller delivery profile. 1. A modular endovascular graft device for treating vasculature , comprising:a first graft component having a first wall; anda second graft component having a second wall, the second graft component including a frame with a plurality of radially extending components which upon assembling the first and second components, at least one of the plurality of the radially extending components extends through both the first wall and the second wall.2. The device of claim 1 , wherein the frame is in the form of a self-expanding stent.3. The device of claim 1 , the second component further comprising a plurality of pre-fabricated holes claim 1 , at least one pre-fabricated hole being in alignment with one radially extending component.4. The device of claim 1 , wherein the plurality of radially extending components are in the form of hooks or barbs.5. The device of claim 4 , wherein the hooks or barbs have sharpened points.6. The device of claim 4 , wherein the hooks or barbs are pointed in a caudal direction.7. The device of claim 1 , wherein the radially extending component has a length sufficient to extend through the wall of the first graft component and into a wall of vasculature.8. The device of claim 1 , the first graft component further comprising a superior end and an inferior end claim 1 , the inferior end including at least one limb support section.9. The device of claim 1 , wherein the first graft component is bifurcated.10. The device of claim 1 , wherein the second graft component has a tubular configuration.11. The device of claim 1 , wherein the second graft has a proximal end and distal end claim 1 , the ...

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Номер записи: 76
16-05-2013 дата публикации

BIFURCATED ENDOLUMINAL PROSTHESIS

Номер: US20130123904A1
Автор: Cragg Andrew H., Dake Michael D., Goicoechea George, Hudson John, Mialhe Claude
Принадлежит: Scimed Life Systems, Inc.

The present disclosure provides a bifurcated stent for use in juxtaposition with an angiological bifurcation. The disclosure provides a bifurcated stent that includes a proximal portion adapted to be disposed within a blood vessel in juxtaposition with a bifurcation, a first distal stent portion adapted to extend across the bifurcation into one of the branched blood vessels, and a second distal stent portion adapted to allow blood to flow from the proximal portion into the other branch blood vessel. The disclosure also provides a bifurcated prosthesis including such a bifurcated stent and a tubular graft layer formed from a biocompatible fabric in juxtaposition with the stent. The disclosure also provides a stent joining means for joining two stents one to the other to define a continuous lumen through the two stents. 1. A bifurcated stent having an assembly bifurcation for use with an angiological bifurcation of a blood vessel into two branched vessels comprising:a proximal stent portion adapted to be disposed within said blood vessel,a first distal stent portion adapted to extend across the angiological bifurcation into one of the branched vessels,an intermediate stent portion extending distally relative to said assembly bifurcation, anda second stent comprising a second distal stent portion joined to said intermediate stent portion of said first stent and adapted to allow blood to flow from said proximal stent portion into the other branched vessel,wherein said proximal stent portion, said first distal stent portion, and said second distal stent portion comprise a wire following a sinuous path to define a plurality of circumferentially spaced apices formed into a tubular configuration,wherein said wire defines a plurality of hoops such that a plane of a circumference of each hoop is disposed substantially perpendicular to a longitudinal axis of said bifurcated stent,wherein each hoop comprises a substantially complete turn of the wire having a sinuous ...

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Номер записи: 77
16-05-2013 дата публикации

BIOABSORBABLE POLYMERIC MEDICAL DEVICE

Номер: US20130123906A1
Автор: Cottone Robert J., Pazienza John, Ye Shusheng
Принадлежит: ORBUSNEICH MEDICAL, INC.

In embodiments there is described a cardiovascular tube-shaped lockable and expandable bioabsorbable scaffold having a low immunogenicity manufactured from a crystallizable bioabsorbable polymer composition or blend. 2. The scaffold of wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are repeated multiple times claim 1 , one after the other to form the scaffold.3. The scaffold of wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are the same.4. The scaffold of wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are different.5. The scaffold of wherein said scaffold is made of a biodegradable material.6. The scaffold of wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least three points.7. The scaffold of wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least four points.8. The scaffold of wherein said scaffold is made of a polymer.9. The scaffold of wherein said polymer is a poly-lactide polymer.11. The scaffold of wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are repeated multiple times claim 10 , one after the other form the scaffold.12. The scaffold of wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are the same.13. The scaffold of wherein said first sinusoidal strut pattern and said second sinusoidal strut pattern are different.14. The scaffold of wherein said scaffold is made of a biodegradable material.15. The scaffold of wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least three points.16. The scaffold of wherein said second sinusoidal strut pattern is connected to said first sinusoidal strut pattern at at least four points.17. The scaffold of wherein said scaffold is made of a polymer.18. The scaffold of wherein said ...

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Номер записи: 78
16-05-2013 дата публикации

FATIGUE-RESISTANT FLOW REGULATING DEVICE AND MANUFACTURING METHODS

Номер: US20130123908A1
Автор: Hinchliffe Peter W.J., Kalmann Menno, Laksin Olga, Lehman Adam I.
Принадлежит: DEEP VEIN MEDICAL INC.

The artificial valves and methods described herein and shown in the drawings, provide for artificial valves with superior properties including fatigue resistance, biocompatibility, and ease of manufacture. 1. An implantable device for regulating blood flow through a blood vessel , comprising:a) an elongated support dimensioned and configured to be implanted in a blood vessel, the support including axially spaced apart first and second substantially annular support portions, and a linking member linking the axially spaced apart portions to one another; andb) a valve membrane extending between the axially spaced apart support portions, the valve membrane including a first region, a second region, and a flap adjacent the first region, the flap folded over the linking member for attachment to the first region for attachment of the valve membrane to the linking member and the second region being adjacent the first region and unattached to the linking member, the second region movable between a first position to enable blood flow and a second position to inhibit blood flow, wherein at least one of the flap and the first region includes an impregnation material therein, and wherein the flap is joined to the first region of the valve membrane at a substantially seamless, heat shaped adhesion region that includes the impregnation material.2. An implantable device as recited in claim 1 , wherein the linking member includes two curved members intersecting one another to form an x-shape.3. An implantable device as recited in claim 1 , wherein the support is formed at least in part from a one piece Nitinol construct.4. An implantable device as recited in claim 1 , wherein the valve membrane is formed at least in part from ePTFE.5. An implantable device as recited in claim 1 , wherein the impregnation material includes a biocompatible polycarbonate polyurethane material.6. A method of making an implantable device for regulating blood flow through a blood vessel claim 1 , ...

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Номер записи: 79
16-05-2013 дата публикации

Surgical Implant Devices and Methods for Their Manufacture and Use

Номер: US20130123909A1
Автор: John P. Cartledge, Ralph Edward Gaskins, JR., Richard George Cartledge
Принадлежит: Syntheon Cardiology LLC

A sealable vascular system includes an endovascular implant to be delivered in a compressed or folded state to an implantation site. The endovascular implant includes a tubular implant body and a sealable circumferential collar at said tubular implant body and including a variable sealing device and a control lead traversing from said variable sealing device to a user for controlling said variable sealing device by the user, said variable sealing device and said control lead being cooperatively operable to reversibly expand and contract said sealable circumferential collar such that said sealable circumferential collar is circumferentially adjustable during deployment thereof to achieve a repositionable fluid-tight seal between said sealable circumferential collar and the internal walls of the implantation site.

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Номер записи: 80
16-05-2013 дата публикации

MODULAR PROSTHETIC SOCKETS AND METHODS FOR MAKING SAME

Номер: US20130123940A1
Автор: Hurley Garrett Ray, Williams Jesse Robert
Принадлежит:

The invention relates to a prosthetic socket for a residual limb of the lower extremity or upper extremity of an individual person. The residual limb has particular dimensions and anatomical contours; the prosthetic socket has dimensions and contours that fit the dimensions and contours of the residual limb. The prosthetic socket may also fit in a manner that is biomechanically particularly appropriate for the individual. The prosthetic socket is an assembly of components from groups of components that include (a) struts arranged longitudinally with respect to the residual limb, (b) proximal brim members arranged proximally to the struts and connected thereto; and (c) distal socket members disposed at the distal base of the prosthetic socket. The socket components within these groups may be modular in that they can vary with respect to dimensions and/or contours, and yet have common connecting features that permit assembly of the components together to form the prosthetic socket. 1. A modular prosthetic system comprising: a. one or more struts arranged longitudinally with respect to the residual limb, each strut having a distal end and a proximal end;', 'b. one or more proximal brim members arranged proximally with respect to the one or more struts and connected directly or indirectly thereto; and', 'c. one or more distal socket members disposed at the distal base of the prosthetic socket,, 'a prosthetic socket for a residual limb of a lower extremity or upper extremity of an individual person, the residual limb comprising individual dimensions and anatomical contours, the prosthetic socket comprising dimensions and contours that substantially fit the dimensions and contours of the residual limb, the prosthetic socket comprising an assembly of components from each of three groups of socket componentswherein one or more of the socket component groups comprise modular components, said modular components comprising (1) variation with respect to dimensions and/or ...

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Номер записи: 81
23-05-2013 дата публикации

METHOD AND APPARATUS FOR LOADING A BENEFICIAL AGENT INTO AN EXPANDABLE MEDICAL DEVICE

Номер: US20130127089A1
Автор: Diaz Stephen Hunter, Park Kinam
Принадлежит: INNOVATIONAL HOLDINGS LLC

The present invention relates to method for loading a beneficial agent into an expandable medical device. The method includes the steps of sealing a plurality of openings extending through the medical device from a first side to a second side with a sealing member to substantially prevent a beneficial agent from passing through the openings, partially filling the openings with the beneficial agent delivered from an automated micro-jetting dispenser, substantially solidifying the beneficial agent, and removing the sealing member from the plurality of openings. 1. A method for loading a beneficial agent into a medical device , the method comprising:providing a medical device with a plurality of openings extending through the medical device from a first side to a second side of the medical device;sealing the plurality of openings at the first side of the medical device with a sealing member to substantially prevent a beneficial agent from passing through the openings;at least partially filling the openings with the beneficial agent delivered from an automated micro-jetting dispenser;substantially solidifying the beneficial agent; andremoving the sealing member from the plurality of openings.2. The method of claim 1 , wherein the sealing member is formed of a rubber-like material.3. The method of claim 2 , wherein the sealing member is a mandrel having an outer surface formed of the rubber-like material claim 2 , and the medical device is a stent.4. The method of claim 1 , wherein the openings are formed by laser cutting.5. The method of claim 1 , wherein the medical device is a metallic medical device.6. The method of claim 1 , wherein the openings have an area of at least 5×10square inches.7. The method of claim 1 , wherein the beneficial agent includes a drug anda polymer matrix.8. The method of claim 1 , wherein the step of substantially solidifying includes drying the beneficial agent.9. The method of claim 1 , wherein the micro-jetting dispenser is a piezoelectric ...

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Номер записи: 82
23-05-2013 дата публикации

Method for Manufacturing of Drug-Releasing Stent Coated with Titanium-Oxide Thin Film

Номер: US20130129912A1
Автор: Cho Dong Lyun, Jeong Myung Ho, KIM Kyoung Seok, Park Yu Jeong, Song Sun-Jung
Принадлежит: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

A method for manufacturing a drug-releasing stent is provided. The method includes providing a titanium precursor, a carrier gas and a reactant gas in a plasma vacuum chamber, and generating a plasma for 1 to 6 hours to form a titanium oxide thin film on the surface of a stent. The method further includes providing steam or oxygen and hydrogen in the plasma vacuum chamber and generating a low-temperature plasma for 10 minutes to 2 hours to modify the surface of the titanium oxide thin film. The method further includes reacting the titanium oxide thin film of the stent with a drug in an acidic solution and under an inert gas atmosphere at room temperature to 100° C. for 30 minutes to 4 hours to attach the drug. 1. A method for manufacturing a drug-releasing stent , comprising:providing a titanium precursor, a carrier gas and a reactant gas in a plasma vacuum chamber and generating a plasma for 1 to 6 hours to form a titanium oxide thin film on the surface of a stent;providing steam or oxygen and hydrogen in the plasma vacuum chamber and generating a low-temperature plasma for 10 minutes to 2 hours to modify the surface of the titanium oxide thin film; andreacting the titanium oxide thin film of the stent with a drug in an acidic solution and under an inert gas atmosphere at room temperature to 100° C. for 30 minutes to 4 hours to attach the drug.2. The method for manufacturing a drug-releasing stent according to claim 1 , wherein the titanium precursor is one or more selected from a group consisting of titanium butoxide claim 1 , tetraethylmethylamino titanium claim 1 , titanium ethoxide claim 1 , titanium isopropoxide and tetramethylheptadiene titanium.3. The method for manufacturing a drug-releasing stent according to claim 1 , wherein the carrier gas is one or more selected from a group consisting of argon and helium.4. The method for manufacturing a drug-releasing stent according to claim 1 , wherein the reactant gas is one or more selected from a group ...

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Номер записи: 83
23-05-2013 дата публикации

Embolic Device With Shaped Wire

Номер: US20130131711A1
Автор: Heath Bowman
Принадлежит: MicroVention Inc

Devices for the occlusion of body cavities, such as the embolization of vascular aneurysms and the like, and methods for making and using such devices. The devices may be comprised of novel expansile materials, novel infrastructure design, or both. The devices provided are very flexible and enable deployment with reduced or no damage to bodily tissues, conduits, cavities, etceteras.

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Номер записи: 84
23-05-2013 дата публикации

Branch stent graft deployment and method

Номер: US20130131777A1
Автор: David Ernest Hartley, Eric L.G. Verhoeven, Krasnodar Ivancev, Michael Lawrence-Brown, Wolf Stelter
Принадлежит: Cook Medical Technologies LLC, William A Cook Australia Pty Ltd

A deployment device for deploying a self-expanding fenestrated stent graft. The device includes a fenestrated stent graft retained on an introducer. The introducer includes a main catheter and an auxiliary catheter preloaded within the introducer and extending from distal the distal end of the stent graft, into the lumen of the stent graft and through the fenestration.

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Номер записи: 85
23-05-2013 дата публикации

SILANE BONDED MEDICAL DEVICES AND METHOD OF MAKING SAME

Номер: US20130131779A1
Автор: Grewe David Douglas, Haselby Kenneth Aaron, Milner Keith, Sherman Sara Marie
Принадлежит: Cook Medical Technologies LLC

A method for bonding a graft material to a support element employing a silane coupling agent, and a medical device obtainable by said method. A medical device including a graft material bound to a support element by a plurality of silane linkages is also described. 1. A method of bonding a graft material to a support element , the method comprising:placing the graft material in contact with the support element in the presence of a silane coupling agent; andheating the graft material, support element, and silane coupling agent to an effective temperature to bond the graft material to the support element.2. The method of claim 1 , wherein the graft material comprises a polymer material selected from a group consisting of polyethylene claim 1 , polypropylene claim 1 , polyethylene terephthalate claim 1 , expanded polytetrafluoroethylene claim 1 , polyurethane claim 1 , and polyetherurethane.3. The method of claim 2 , wherein the graft material comprises ultra high molecular weight polyethylene.4. The method of claim 1 , wherein the support element comprises a metallic material selected from a group consisting of a nickel-titanium alloy claim 1 , stainless steel claim 1 , and a cobalt-chromium alloy claim 1 , and the graft material is bonded to the metallic material.5. The method of claim 4 , wherein the support element comprises a nickel-titanium alloy.7. The method of claim 6 , wherein the silane coupling agent is vinyltrimethoxysilane.8. The method of claim 6 , wherein said heating the graft material claim 6 , support element claim 6 , and silane coupling agent is conducted in the presence of a radical initiator.9. The method of claim 8 , wherein the radical initiator is a peroxide selected from a group consisting of dibenzyl peroxide and dicumyl peroxide.10. The method of claim 6 , wherein said heating the graft material claim 6 , support element claim 6 , and silane coupling agent is performed under high humidity conditions.12. The method of claim 11 , wherein Y is ...

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Номер записи: 86
23-05-2013 дата публикации

Lattice

Номер: US20130131780A1
Автор: Armstrong Joseph R., Cully Edward H., Duncan Jeffrey B., Hansen Mark Y., Montgomery William D., Terry Wendy J.
Принадлежит: W. L. Gore & Associates, Inc.

The invention relates to medical devices and methods of using them. The devices are prostheses which can be percutaneously deliverable with (or on) an endovascular catheter or via other surgical or other techniques and then expanded. The prostheses are configured to have a lattice resistant to dilation and creep, which is defined by a plurality of openings. The prosthesis may also optionally have a stent disposed proximal to the lattice. In exemplary embodiments, the fluoropolymer is expanded polytetrafluoroethylene. The composite materials exhibit high elongation while substantially retaining the strength properties of the fluoropolymer membrane. In at least one embodiment, the lattice is made of a composite material that includes a least one fluoropolymer membrane including serpentine fibrils and an elastomer. A lattice including a generally tubular member formed of a composite material including a least one fluoropolymer membrane containing serpentine fibrils and an elastomer is also provided. 1. An endovascular prosthesis comprising:a generally tubular lattice comprising at least two circumferential segments that are oriented at an angle of between about 45 degrees and about 90 degrees with respect to the longitudinal axis of the generally tubular lattice;wherein the generally tubular lattice is adapted to expand radially into an enlarged first diametrical dimension and at least one circumferential segment of the lattice being resistant to further expansion; andwherein the generally tubular lattice can be adjusted to a further enlarged second diametrical dimension when distensive force is applied thereto and the circumferential segment resistant to further expansion is plastically deformed or broken.2. The endovascular prosthesis of claim 1 , wherein the lattice further comprises at least two longitudinal segments that are substantially parallel to the axis of the generally tubular lattice and wherein said at least two longitudinal segments and said at least two ...

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Номер записи: 87
23-05-2013 дата публикации

BIOCOMPOSITE MEDICAL CONSTRUCTS INCLUDING ARTIFICIAL TISSUES, VESSELS AND PATCHES

Номер: US20130131781A1
Автор: Greenhalgh Kerriann, Koob Thomas J., Li Mengyan
Принадлежит:

The disclosure describes methods of making collagen based biocomposite constructs and related devices. The methods include: (a) winding at least one collagen fiber a number of revolutions about a length of a support member having a long axis, the winding having at least one defined pitch and/or fiber angle relative to the long axis of the support member to form an elongate construct; and (b) applying a fluid polymeric material, such as, for example, an acrylate emulsion and/or other thermoplastic material, onto the collagen fiber during the winding step. Optionally, the fluid polymeric material can include antibiotics and/or other therapeutic agents for additional function/utility. 1. A medical device , comprising:an elastic tube with a wall surrounding an axially extending cavity, the wall having at least one collagen fiber of a length arranged in a fiber mesh pattern of intersecting segments over at least a major length of the tube, the at least one collagen fiber embedded in a non-cytotoxic polymeric film that extends over interstitial spaces defined by the fiber mesh pattern.2. A medical device according to claim 1 , wherein the at least one collagen fiber is derived from extruded soluble dermal collagen and has a length that is between about 1 m to about 100 m claim 1 , and wherein the at least one collagen fiber is wound at an angle of between about 1° to 90° relative to a first plane normal to a longitudinal axis of the tube claim 1 , and wherein the tube includes multiple overlying layers of the at least one collagen fiber.3. A medical device according to claim 1 , wherein the at least one fiber has a diameter when dry of between about 0.05 mm (average) to about 0.2 mm (average) claim 1 , and wherein the at least one collagen fiber is wound about a longitudinal axis of the tube at an angle of between about 5° to 55° relative to the first plane normal to the longitudinal axis.4. A medical device according to claim 1 , wherein the tube is implantable in a ...

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Номер записи: 88
23-05-2013 дата публикации

BIOABSORBABLE POLYMERIC MEDICAL DEVICE

Номер: US20130131782A1
Автор: Cottone Robert J., Pazienza John, Ye Shusheng
Принадлежит: ORBUSNEICH MEDICAL, INC.

In embodiments there is described a cardiovascular tube-shaped lockable and expandable bioabsorbable scaffold having a low immunogenicity manufactured from a crystallizable bioabsorbable polymer composition or blend. 1. A biosorbable and flexible scaffold circumferential about a longitudinal axis so as to form a tube , said tube having a proximal open end and a distal open end , and being crimpable and expandable , and having a patterned shape in expanded form comprising:a first multicomponent strut pattern helically coursing from said proximal open end to said distal open end of said tube;a second multicomponent strut pattern helically coursing from said proximal open end to said distal open end of said tube;wherein a component of said first multicomponent strut pattern opposes by from about 120° to about 180° a component of said second multicomponent strut pattern as each helically courses from said proximal open end to said distal open end of said tube.2. The scaffold of wherein each component strut pattern of said first multicomponent strut pattern is substantially the same in configuration.3. The scaffold of wherein each component strut pattern of said second multicomponent strut pattern is substantially the same in configuration.4. The scaffold of wherein each component strut pattern of said first and second multicomponent strut pattern is substantially the same in configuration.5. The scaffold of wherein each opposing component of said component strut pattern between said first multicomponent strut pattern and second multicomponent strut pattern is substantially the same in configuration.6. The scaffold of wherein each component forms an stylized H configuration.7. The scaffold of wherein each component forms a stylized X configuration.8. The scaffold of wherein each component forms an stylized S configuration.9. The scaffold of wherein each component forms an stylized 8 configuration.10. The scaffold of wherein each component forms an stylized I ...

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Номер записи: 89
23-05-2013 дата публикации

IMPLANTABLE MEDICAL DEVICES CONSTRUCTED OF SHAPE MEMORY MATERIAL

Номер: US20130131783A1
Автор: BENARY RAPHAEL, Shalev Alon
Принадлежит: ENDOSPAN LTD.

Medical apparatus () is provided for insertion into a mammalian body. The apparatus () includes structural stent elements (), at least a portion of which are shaped so as to define (a) at least one generally circumferential band (), and (b) a plurality of engagement members () that are joined to and extend radially inwardly from the band (). The apparatus () further includes an elongated latch member () which is threaded through the engagement members (), thereby physically latching the engagement members (). The band () and the engagement members () are configured such that (a) when the latch member () is threaded through and thus physically latches the engagement members (), the engagement members () retain the band () in a radially-compressed state, and (b) when the latch member () is removed from the engagement members (), the band () assumes a radially-expanded state. Other embodiments are also described. 1. Medical apparatus for insertion into a mammalian body , the apparatus comprising: at least one generally circumferential band, and', 'a plurality of engagement members that are joined to and extend radially inwardly from the band; and, 'structural stent elements, at least a portion of which are shaped so as to definean elongated latch member which is threaded through the engagement members, thereby physically latching the engagement members, when the latch member is threaded through and thus physically latches the engagement members, the engagement members retain the band in a radially-compressed state, and', 'when the latch member is removed from the engagement members, the band assumes a radially-expanded state., 'wherein the band and the engagement members are configured such that2. The apparatus according to claim 1 , wherein the elongated latch member comprises an element selected from the group consisting of: a wire and a hollow tube.3. The apparatus according to claim 1 , wherein the engagement members have (a) respective first ends claim 1 , which ...

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Номер записи: 90
23-05-2013 дата публикации

RADIOPAQUE MARKERS FOR IMPLANTABLE STENTS AND METHODS FOR MANUFACTURING THE SAME

Номер: US20130131785A1
Автор: Lorenzo Juan A.
Принадлежит: CODMAN & SHURTLEFF, INC.

Radiopaque markers for use with stents implantable within a body vessel are provided with one or more through-holes. Each through-hole extends through the thickness of the marker to expose a portion of the stent underlying the marker. The marker is welded to the stent through each through-hole. Also provided are stents incorporating a radiopaque marker having one or more through-holes suitable for receiving a plug weld. Methods are provided for securing a radiopaque marker having one or more through-holes to a stent via welds. 1. A radiopaque marker securable to a strut of a stent implantable within a body vessel of a human subject , the marker comprising an inner surface adapted for engagement with a strut of a stent , an outer surface of the marker , a thickness separating the inner surface from the outer surface of the marker , and at least one through-hole , wherein said through-hole passes through the thickness , allows for access to a portion of a strut underlying the radiopaque marker when the inner surface is engaged against a strut of a stent , and said through-hole is adapted for at least partially receiving a plug weld to secure the radiopaque marker to the stent strut.2. The radiopaque marker of claim 1 , wherein said inner surface has an arcuate cross-section.3. The radiopaque marker of claim 1 , wherein said inner surface has a C-shaped cross-section.4. The radiopaque marker of claim 1 , wherein said inner surface has an L-shaped cross-section.5. The radiopaque marker of claim 1 , wherein said thickness is substantially uniform and said radiopaque marker has a C-shaped cross-section.6. The radiopaque marker of claim 1 , further comprising a plurality of through-holes.7. The radiopaque marker of claim 1 , wherein said through-hole is adapted for receiving an entire plug weld.8. A radiopaque marker securable to a strut of a stent implantable within a body vessel claim 1 , the stent including a plurality of interconnecting struts defining a plurality of ...

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Номер записи: 91
30-05-2013 дата публикации

PARAPLEGIA PREVENTION STENT GRAFT

Номер: US20130138199A1
Автор: Ivancev Krasnodar, Roeder Blayne A.
Принадлежит: Cook Medical Technologies LLC

A stent graft for deployment into the aorta of a patient has a tubular body with a proximal portion of a selected diameter; preferably a reduced diameter portion, distal of the proximal portion, having a diameter less than the selected diameter; a tapered portion, extending between the proximal portion and the reduced diameter portion; and optionally a distal portion, distal of the reduced diameter portion. At least three, preferably four or five, low profile side arms are provided, preferably in the reduced diameter portion and/or the tapered portion, for connection of an arm extension to an aortic branch vessel. All but one of the side arms are to be connected at the physician's choice, depending on the anatomy of the patient. One side arm is to provide temporary perfusion to external of the stent graft after deployment of the stent graft into the aorta, and is subsequently blocked. 1. An implantable device for deployment into a vessel of the human or animal body , comprisinga tubular body of a biocompatible graft material, the tubular body defining a main lumen therethrough, andat least three low profile side arms in the tubular body, each low profile side arm comprising a respective side arm lumen therethrough and the main lumen being in fluid communication with the respective side arm lumens;wherein at least two of the low profile side arms point downwardly and open externally of the tubular body to allow the flow of blood in a distal direction, and at least one of the low profile side arms points upwardly and opens externally of the tubular body to allow the flow of blood in a proximal direction.2. An implantable device as in claim 1 , wherein the low profile side arms in the tubular body are at least four in number claim 1 , and wherein the low profile side arms pointing downwardly and opening externally of the tubular body are at least three in number.3. An implantable device as in claim 1 , wherein the low profile side arms in the tubular body are at least ...

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Номер записи: 92
30-05-2013 дата публикации

BIFURCATED GRAFT DEPLOYMENT SYSTEMS AND METHODS

Номер: US20130138200A1
Автор: Mayberry Kevin, Pham Trinh, Schreck Stefan G.
Принадлежит: Endologix, Inc.

A method for deploying an endoluminal vascular prosthesis using a deployment catheter that has at least a main graft portion and a first branch graft portion. The deployment catheter preferably comprises an elongate, flexible catheter body having a proximal end and a distal end, and an outer sheath and an inner core that is axially moveable with respect to the outer sheath. The catheter preferably comprises a main graft restraint that has a main graft release mechanism comprising a main graft sheath and a suture threaded through a plurality of the openings in the main graft sheath. The catheter further comprises at least one branch graft restraint comprising at least one branch graft release mechanism. 1. A method of deploying a bifurcated prosthesis in a patient's vasculature , comprising:supporting the bifurcated prosthesis with a deployment catheter;advancing at least a distal end portion of the deployment catheter and the prosthesis through a first access site in a first vessel in a patient's vasculature to a bifurcation region of the patient's vasculature;positioning a main body portion of the bifurcated prosthesis in a main vessel;positioning a first branch portion of the bifurcated prosthesis in a first branch vessel;positioning a second branch portion of the bifurcated prosthesis in a second branch vessel, wherein the first and second branch vessels branch off the main vessel;releasing a main body portion of the bifurcated prosthesis from a main body restraint so that the main body portion of the bifurcated prosthesis expands in the main vessel; andwithdrawing the main body restraint from the patient's vasculature through a second access site in a second vessel, wherein the second access site is at a different location than the first access site.2. The method of claim 1 , comprising advancing the main body restraint into the patient's body through the first access site.3. The method of claim 1 , comprising releasably restraining the first branch portion of ...

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Номер записи: 93
30-05-2013 дата публикации

BLOOD PERFUSION DEVICE

Номер: US20130138202A1
Автор: Bach Oliver, Barnett Angela R., Milner Keith R., Paul Ram H., Steiner Ralf, Swift Richard A.
Принадлежит:

A perfusion device and a delivery system for repair of a damaged portion of a body vessel. Perfusion device can include a tubular body that is self-expandable, having a proximal portion, a distal portion, and an intermediate portion. One or more series of barbs can be disposed circumferentially along the intermediate portion. Barbs are capable of penetrating into the tunica intima and tunica media of said vessel wall upon insertion of said device into said body vessel, and not into said tunica adventitia. A graft can be associated with the tubular body. Graft has a proximal end and a distal end, and preferably extends entirely along a luminal wall of the tubular body. Graft may also extend along an exterior surface of the tubular body at the proximal and distal portions. A remodelable covering can be applied along the intermediate portion. Delivery devices for the perfusion implant and methods of delivering the perfusion implant are also provided. 1. A perfusion device for repair of a body vessel , comprising:a tubular body being radially self-expanding from a compressed configuration to an expanded configuration, the tubular body having a proximal end and a distal end and defining a lumen about a longitudinal axis, the tubular body comprising a proximal portion, a distal portion, and an intermediate portion, the proximal and distal portions each comprising at least two end cells comprising a plurality of struts and bends interconnected to the struts, and the intermediate portion comprising at least two or more intermediate cells comprising a plurality of struts and bends interconnected to the struts;wherein the at least two end cells comprise a first end cell and a second end cell, the first end cell being located most-proximal in the proximal portion and most-distal in the distal portion, and the second end cell being located adjacent the first end cell toward the intermediate cells, each of the second end cells comprising integral barbs directed toward the ...

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Номер записи: 94
30-05-2013 дата публикации

Prosthesis having a plurality of distal and proximal prongs

Номер: US20130138203A1
Автор: Quadri Arshad
Принадлежит: CARDIAQ VALVE TECHNOLOGIES, INC.

An expandable vascular stent includes an m×n array of ovals formed in a cylinder, m being the number of columns of ovals in the circumferential direction and n being the number of rows of ovals in the axial direction, and a plurality of prongs extending inwardly from the outer ends of respective ovals in rows 1 and n of the m×n array, and being arranged in facing pairs extending from axially-aligned ovals. The cylinder is expandable from an initial diameter to a pre-determined final diameter, wherein an increase in the diameter of the stent results in a substantial decrease in the length of the stent. The tube and the prongs can be made of surgical stainless steel, the tube being expandable using an angioplasty balloon; or the tube and the prongs can be made of a memory metal and the tube is self-expanding. 1. A prosthesis configured to be deployed within a body cavity , the prosthesis comprising:an expandable frame comprising a proximal end and a distal end and a longitudinal axis extending therethrough, the expandable frame comprising a plurality of cells configured to permit the frame to radially expand and collapse for deployment within the body cavity;a plurality of proximal prongs each connected to the frame so that when the frame is in an expanded configuration an end of each proximal prong is positioned radially outward from the frame and extends distally in an axial direction generally parallel with the longitudinal axis; anda plurality of distal prongs each connected to the frame so that when the frame is in an expanded configuration an end of each distal prong is positioned radially outward from the frame and extends proximally in an axial direction generally parallel with the longitudinal axis;wherein the frame is configured such that radial expansion of the frame causes the ends of the proximal prongs and the ends of the distal prongs to draw closer together.2. The prosthesis of claim 1 , wherein the proximal prongs and distal prongs are arranged in ...

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Номер записи: 95
30-05-2013 дата публикации

STENT

Номер: US20130138204A1
Автор: Kawabata Takashi, Kinuta Seichin
Принадлежит: OPTNICS PRECISION CO., LTD.

A stent that is extremely useful in practice, with excellent proof stress (elastic limit stress). 1. (canceled)2. A tubular stent that is expandable in a radial direction , the stent being placed in a tubular vessel of a living body and comprising a main stent element that is formed at an imaginary cylinder surface , the main stent element being fabricated of an alloy with a higher fatigue strength than nickel and nickel/cobalt alloys.3. The stent according to claim 2 , wherein the fatigue strength of the alloy of the main stent element is at least 1.5 times the strength of nickel and nickel/cobalt alloys.4. The stent according to claim 2 , wherein the main stent element comprises an electroformed alloy including one of gold claim 2 , silver claim 2 , copper claim 2 , nickel claim 2 , cobalt or palladium.5. The stent according to claim 4 , wherein the main stent element is fabricated by electroforming using the alloy including one of gold claim 4 , silver claim 4 , copper claim 4 , nickel claim 4 , cobalt or palladium claim 4 , to which is added a compound selected from sulfites claim 4 , chlorides claim 4 , ammonia complexes claim 4 , cyan complexes claim 4 , amine complexes claim 4 , sulfamine complexes claim 4 , hypophosphites claim 4 , pyrophosphates claim 4 , tartrates or EDTA.6. The stent according to or claim 4 , wherein the main stent element has gold as a primary structural constituent and is fabricated by electroforming using an alloy of at least one selected from silver claim 4 , copper claim 4 , nickel claim 4 , cobalt or palladium.7. The stent according to or claim 4 , wherein the main stent element has palladium as a primary structural constituent and is fabricated by electroforming using an alloy of at least one selected from gold claim 4 , silver claim 4 , copper claim 4 , nickel or cobalt.8. The stent according to claim 2 , wherein the main stent element includes a joining portion for forming the main stent element into a tubular shape.9. The stent ...

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Номер записи: 96
30-05-2013 дата публикации

VENTRICULAR ASSIST DEVICE AND METHOD

Номер: US20130138205A1
Автор: Khalpey Zain, Kushwaha Sudhir
Принадлежит: MI-VAD, Inc.

A ventricular assist device includes a stent for placement within a cardiac artery and arranged for placement, the stent arranged to have an open configuration defining a flow path, a rotor sized to fit within the stent and arranged for percutaneous placement the flow path, the rotor including a surface disposed about a central portion and angled with respect to the flow path and having a first plurality of magnets. A collar is sized for placement about the cardiac artery and includes a stator. A power source is coupled to the stator, and the stator and the rotor are arranged to rotate the rotor about an axis. A timing control module controls a rotational speed of the rotor. Accordingly, the surface of the rotor is arranged to move blood along the flow path in response to rotation of the rotor. 1. A ventricular assist device for a human heart comprising:a stent having a cylindrical stent wall with an inner surface defining a flow path and an outer surface sized for placement within a blood vessel;a stator disposable within the stent, the stator having a plurality of support struts connected to the stator and disposable against the inner surface of the stent wall to position the stator within the stent;a rotor including an outer surface facing the inner surface of the stent wall and defined in part by at least one blade angled with respect to the flow path, the rotor rotatably mounted on the stator between the inner surface of the stent and the stator,one of the rotor and the stator comprising a field magnet and the other of the rotor and the stator comprising windings;a power source operatively coupled to the windings; anda controller operatively coupled to the power source to selectively control the power source to vary the rotational speed of the rotor.2. The device of claim 1 , wherein the rotor comprises the field magnet and the stator comprises the windings claim 1 , the windings operatively coupled to the power source.3. The device of claim 1 , wherein the ...

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Номер записи: 97
30-05-2013 дата публикации

BIODEGRADABLE STENTS HAVING ONE OR MORE COVERINGS

Номер: US20130138219A1
Автор: Ryan Michael, Toomey Ciarán
Принадлежит: Cook Medical Technologies LLC

The present embodiments provide a medical device comprising a stent framework having proximal and distal regions and a lumen extending therebetween, and which comprises a biodegradable material. A first covering is coupled to at least a portion of an outer surface of the stent framework. When the stent framework is in an expanded deployed configuration, at least a portion of the first covering is disposed adjacent to a target site and fluid flows through the lumen of the stent framework. Further, the stent framework comprises a material that biodegrades a predetermined time after the first covering achieves at least partial remodeling at the target site. In various embodiments, one or more second coverings may be disposed adjacent to the first covering and comprise a material that biodegrades before the stent framework biodegrades. 1. A medical device , comprising:a stent framework having proximal and distal regions and a lumen extending therebetween, wherein the stent framework comprises a biodegradable material; anda first covering coupled to at least a portion of an outer surface of the stent framework,wherein, when the stent framework is in an expanded deployed configuration, at least a portion of the first covering is disposed adjacent to a target site and fluid flows through the lumen of the stent framework, andwherein the stent framework comprises a material that biodegrades a predetermined time after the first covering achieves at least partial remodeling at the target site.2. The medical device of further comprising at least one second covering coupled to at least a portion of an outer surface of the stent framework and disposed adjacent to the first covering.3. The medical device of comprising proximal and distal second coverings coupled to at least a portion of an outer surface of the stent framework claim 2 , wherein the proximal second covering is disposed proximal to the first covering and the distal second covering is disposed distal to the first ...

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Номер записи: 98
30-05-2013 дата публикации

SEALING SHEATH FOR PROSTHETIC LINER AND RELATED METHODS

Номер: US20130138224A1
Автор: MACKENZIE Craig
Принадлежит: EVOLUTION INDUSTIRES, INC.

The sealing sheath is for use with a prosthetic socket and associated liner. The sealing sheath includes a textile tube for surrounding at least a portion of a liner that is configured to wear on a residual limb. An annular seal, e.g. an elastomeric or silicone seal, is positioned adjacent a proximal end of the textile tube and continuously extends from an inside of the textile tube configured to be adjacent the liner, through the textile tube to an outside thereof configured to be adjacent an inside of the prosthetic socket. The annular seal may include a first wing on an inside of the textile tube configured to be adjacent the liner, a second wing on an outside of the textile tube configured to be adjacent an inside of the prosthetic socket, and a base connecting lower ends of the first and second wings to define a v-shaped cross-section of the annular seal. 1. A sealing sheath for use with a prosthetic socket and associated liner , the sealing sheath comprising:a textile tube defining an open proximal end; andan annular seal continuously extending from and along an inside surface of the textile tube, and through the textile tube to an outside surface thereof, the annular seal including a first wing along on the outside surface of the textile tube, a second wing extending along the outside surface of the textile tube, and a base connecting lower ends of the first and second wings adjacent to the outside surface of the textile tube to define a v-shaped cross-section of the annular seal;wherein the textile tube forms outer and inner peripheral surfaces of the sealing sheath in areas beyond the annular seal.2. The sealing sheath according to claim 1 , wherein the annular seal is positioned adjacent a proximal end of the textile tube.3. The sealing sheath according to claim 1 , wherein the textile tube defines a wicking layer.4. The sealing sheath according to claim 1 , wherein the first wing claim 1 , the second wing and the base define a generally v-shaped cross- ...

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Номер записи: 99
06-06-2013 дата публикации

STENT SPIN COATING METHOD AND SYSTEM

Номер: US20130142940A1
Автор: Pacetti Stephen D.
Принадлежит: Abbott Cardiovascular Systems Inc.

A method for removing excess coating from a stent involves simultaneously applying a coating substance to the stent, rotating the stent about a first axis of rotation, and rotating the stent about a second axis of rotation parallel to the first axis of rotation. An apparatus for removing excess coating from a stent includes a first system configured to rotate the stent about an axis of rotation, a fixture configured to support the stent such that a longitudinal axis of the stent is generally parallel to the axis of rotation, and a second system configured to rotate the stent about the longitudinal axis of the stent while the stent is supported by the fixture. 1. A method for removing excess coating from a stent , the method comprising conducting the following acts at the same time:applying a coating substance to the stent;rotating the stent about a first axis of rotation; androtating the stent about a second axis of rotation parallel to the first axis of rotation.2. The method of claim 1 , wherein the second axis of rotation is along a longitudinal central axis of the stent.3. The method of claim 2 , wherein the stent forms includes a cylindrical structure claim 2 , and the longitudinal central axis of the stent extends through opposite ends of the cylindrical structure.4. The method of claim 2 , wherein the stent is rotated about the first axis of rotation at a rate between about 300 rpm and about 10 claim 2 ,000 rpm.5. The method of claim 4 , wherein the stent is rotated about the second axis of rotation at a rate between about 100 rpm and about 5 claim 4 ,000 rpm.6. The method of claim 1 , wherein the stent includes a cylindrical structure claim 1 , and the second axis of rotation extends through opposite ends of the cylindrical structure.7. The method of claim 1 , wherein the stent is positioned off-set claim 1 , at a distance away from the first axis of rotation.8. A method for removing excess coating from a stent claim 1 , the method comprising:applying a ...

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Номер записи: 100