CA2288044C - Variable expansion force stent - Google Patents

Variable expansion force stent Download PDF

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Publication number
CA2288044C
CA2288044C CA002288044A CA2288044A CA2288044C CA 2288044 C CA2288044 C CA 2288044C CA 002288044 A CA002288044 A CA 002288044A CA 2288044 A CA2288044 A CA 2288044A CA 2288044 C CA2288044 C CA 2288044C
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CA
Canada
Prior art keywords
stmt
force
region
stent
vessel
Prior art date
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Expired - Fee Related
Application number
CA002288044A
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French (fr)
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CA2288044A1 (en
Inventor
Jon P. St. Germain
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Boston Scientific Ltd Bermuda
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Boston Scientific Ltd Bermuda
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Publication of CA2288044A1 publication Critical patent/CA2288044A1/en
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Publication of CA2288044C publication Critical patent/CA2288044C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/88Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2250/0039Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter

Abstract

A stent having varying outward radial force along its length. In use, the stent can provide greater force in vessel regions requiring greater force and less force in regions requiring less. In particular, more force is provided in the narrowed, center of a stenosis, while not applying too much force to the adjoining healthy tissue area. Greater stent expansion is provided in wider vessel geometries and less stent expansion in narrower regions. Varying force is achieved varying the number of elements, the density of elements, and the thickness of the elements.

Description

VARIABLE EXPANSION FORCE STENT
Field of the Invention The invention relates generally to medical devices. More specifically, the invention relates to stems for holding vessels such as arteries open to flow.
Background of the Invention Stems are insertable medical devices used to maintain openings for fluid flow in areas that might otherwise close, hindering flow. Stems are used to prevent restenosis after Percutaneous Transluminal Catheter Angioplasty (PTCA), presenting outward radial force against a potentially rebounding vessel wall after balloon widening. Stems are also used to hold open inflamed vessel walls that would otherwise be swollen shut, precluding flow. Stems can also be used to hold open surgically made holes for drainage.
Stems are often tubular devices for insertion into tubular vessel regions.
Balloon expandable stems require mounting over a balloon, positioning, and inflation of the balloon to expand the stmt radially outward. Self expanding stems expand into place when unconstrained, without requiring assistance from a balloon. A self expanding stmt is biased so as to expand upon release from the delivery catheter.
A vessel having a stenosis may be modeled as an inwardly protruding arcuate addition of hardened material to a cylindrical vessel wall, where the stenosed region presents a somewhat rigid body attached along, and to, the elastic wall. The stenosis presents resistance to any expansion of the vessel in the region bridged by the stenosis. Stenoses vary in composition, for example, in the degree of calcification, and therefore vary in properties as well.
The arcuate geometry of many stenoses present a variation in resistance along the vessel axis to stmt outward radial force. Specifically, stenosed vessel resistance is often greatest toward the middle, lessening toward the ends, with a rapid decrease at the start of healthy vessel tissue. A conventional self expanding stmt optimally has a length greater than the length of the stenosed region to be kept open. Current stems present a substantially uniform outward radial force along their length. Currently, stems do not vary outward radial force to match stenosis geometries or resistances. A constant force stmt, with sufficient force to maintain an open channel within a stenosis, has greater force than necessary in the healthy vessel portion lying past the stenosis ends. The stmt ends may thus flare outward, protruding into, and possibly irritating non-stenosed tissue.
Stenosis can occur in vessel regions having asymmetric geometry lying on either side of the stenosis. One example of this is the ostium of a coronary artery, having a wide opening toward the aorta, converging into a narrower coronary artery. A conventional stmt placed in the ostium would provide substantially uniform outward force over a non-uniform vessel diameter. If this force is properly matched for the narrower vessel opening, it is likely less than optimal for the wider region.
-2-What would be desirable, and has not heretofore been provided, is a stmt capable of providing sufficient force to keep a vessel open within a rebounding a stenosis, while providing only necessary force against healthy, non-stenosed vessel regions. What also has not been provided is a stmt providing necessary, but only necessary force along a stenosis in a vessel region having non-uniform vessel diameter on either side of the stenosis.
Summary.of the Invention The present invention includes a self expanding stmt having a tubular shaped structure, where the outward radial force varies with longitudinal position along the length of the stmt. In one embodiment, the force is greater in the center and lesser at both ends. Such a stmt is suitable for placement in a stenosed vessel region. In another embodiment, the force is less at one end, greater at the middle, and greater still at the opposite end. Such a stmt is suitable for placement in a stenosed and narrowing vessel region, including placement near a coronary ostium.
One stmt has a structure formed of shape memory material. In one embodiment, the stmt is constructed of a Nickel-Titanium alloy.
The stmt structure in a preferred embodiment includes a helix formed of a wire having the helix turns spaced more closely together toward the center than at the ends. The helix is biased to expand in outer diameter and contract in length after having been stretched axially and released. In an alternate embodiment, the helix turns increase in spacing from one end to the opposite end. In another
-3-embodiment, interwoven or intertwined wires form the tubular structure, with the number of wires being greater per unit length toward the center than at the ends.
The interwoven wires can be metallic wire. The wires can resemble spirals or helices after having been wound to the tubular stmt shape. In yet another embodiment, the number of wires increase from one end to the opposite end.
One stmt achieves a variation in radial force by including in the stmt structure elements which intersect at junctions having more material in regions requiring more radial force and less material in regions requiring less radial force.
The amount of junction material can be varied by varying the size of the junction area. In a preferred embodiment, the stmt structure is formed by laser cutting a Nitinol tube, leaving a greater strut dimension in regions requiring greater outward radial force.
-4- , In yet another embodiment, the stmt structure includes a series of wire springs having a "zig-zag" shape which each radially encircle a tubular section.
The springs are interconnected longitudinally. The required outward radial force can be varied by varying the stmt wall thickness in this and other embodiments.
In one embodiment, stent regions requiring greater radial force have thicker walls than regions requiring less force.
Stems made in accordance with the present invention can provide an outward radial force more closely matching the local force requirements. In particular, the stems provide greater force only where required in a stenosis center, without providing too much force in the region of healthy tissue. The stems provide an expanded geometry more closely tailored to the requirements of a narrowing vessel region, providing greater expansion in wider regions and less expansion m narrower regions.
Brief Description of the Drawings Figure 1 is a fragmentary longitudinal cross-sectional view of a stenosed vessel region;
Figure 2 is a fragmentary cross-sectional view of a stenosed vessel region with a conventional stmt in place;
Figure 3 is a plot of force versus length for the conventional stmt of Figure 2;
Figure 4 is a fragmentary longitudinal cross-sectional view of a stenosis in a narrowing vessel region;
-5-Figure 5 is a plot of force versus length of an improved stmt for placement in Figure 1;
Figure 6 is a plot of force versus length of an improved stmt for placement in Figure 4;
Figure 7 is a side view of a self expanding stmt having more wires per unit length at longitudinal center;
Figure 8 is a side view of a self expanding stmt coil more closely spaced toward center;
Figure 9 is a side view of a self expanding stmt having thicker elements toward longitudinal center;
Figure 10 is an end view of the stmt of Figure 9;
Figure 11 is a wafer view of the stmt of Figure 9;
Figure 12 is a longitudinal profile of an alternate embodiment of the invention in which the diameter is non-uniform along the stmt length;
Figure I3 is an enlarged view of element junctions in a self expanding stem;
Figure 14 is an enlarged view of an element junction in the self expanding stmt of Figure 13;
Figure 15 is an enlarged view of an element junction of a self expanding stmt;
Figure 16 is a side view of a self expanding stmt having a greater density of elements toward one end; and
-6-
7 PCT/US98/10415 Figure 17 is a side view of a self expanding stmt having more closely spaced elements toward one end.
Detailed DescriQtion of the Preferred Embodiments Figure 1 illustrates a stenosis 30, forming narrowed region 34, in a vessel 31 within vessel wall 32. Adjacent to stenosis 30 is a healthy vessel region 36.
Figure 2 illustrates a conventional stmt 40 in place across stenosis 30, out of the blood flow channel as indicated at 44. Stent 40 includes a stmt end 44, shown angling into healthy vessel area 36 at 38. Stent 40 as shown, has sufficient force to keep vessel 30 open against the rebound force of stenosis 30, and has more force than required at stmt end 42, resulting in stmt 40 angling into the healthy vessel wall at 38. Figure 3 illustrates an idealized plot 50 of outward radial force, F, against stmt length, L, for a conventional stent such as that illustrated in Figure 2. As shown, the force is substantially constant over the length.
Figure 4 illustrates a narrowing vessel 52 having a wide region 56, a narrowed region 58, and a stenosis 54. The narrowing vessel of Figure 4 illustrates the geometry as found in an ostium such as the left coronary ostium, where blood from the aorta flows into the left coronary artery. A stmt with sufficient force to hold open wide region 56 would have greater force than necessary to hold open narrowed region 58. A stmt having the outward radial force axial distribution of Figure 3, would have insufficient force at wide region 56 and greater than required force at narrowed region 58.
_7_ WO 98/52497 PCT/US98/104t5 Figure 5 illustrates a plot 60 of outward radial force F along stmt length L
for one stmt embodying the present invention. The stmt has greater force in a middle region 62 than at end regions 64 and 65. A stmt having the force curve of Figure 5 is suitable for bridging a stenosis as illustrated in Figure l, while preventing the stmt from angling into healthy tissue as show in Figure 2 at 38.
Figure 6 illustrates a plot 66 of outward radial force F along stmt length L
for another stmt embodying the present invention. The stmt has a greater force in end region 68 than at the opposite end region 70. A stmt having the force curve of Figure 6 is suitable for bridging the stenosis as illustrated in Figure 4, having sufficient force to hold open vessel wide region 56 and less force in vessel narrow region 58, where less is required.
Figure 7 illustrates a preferred embodiment of the invention producing a force distribution as illustrated in Figure 5. Self expanding stmt 80 includes numerous resilient wires 82, interwoven as indicated at 88. In use, stmt 80 is drawn longitudinally which increases the length and decreases the diameter.
Stent 80 is inserted into the distal end of the delivery catheter, advanced to a stenosis to be crossed, and forced out of the delivery catheter distal end. Upon exiting the tube, stmt 80 expands radially and shortens axially, pushing against the stenosis and vessel walls.
Stent 80 includes a middle region 84 and end regions 86 and 87. Stent 80 wires 82 are biased to resume the unconstrained state, which is wider and shorter than the constrained stmt shape in the tube. The amount of outward radial force exerted per unit length of stmt is greater in regions having a greater density of _g_ wires per unit length. As illustrated in Figure 7, stmt 80 has a greater number of wires per unit length in center region 84 than in end regions 86 and 87. Thus, stmt 80 has a greater outward radial force in center region 84 than in end regions 86 and 87. The greater number of wires per unit length in one embodiment is the result of forming wires, which run the entire stmt length, more closely together toward stmt center. In another embodiment, the greater number of wires is the result of adding more wires which only run in the center region of the stmt.
Figure 8 illustrates another embodiment of the invention in self expanding stmt 90, having a middle region 94 and end regions 96 and 97. Stent 90 is formed of a single, spirally wound wire 92, forming a helix 98. A preferred embodiment utilizes Nitinol material for wire 92. Helix 98 has a distance between helix turns as indicated at 99. Distance 99 varies with longitudinal position, being greater in middle region 94 and less in end regions 96 and 97.
Wire 92 is formed as a spring, biased to resume its unconstrained shape when released, after having been stretched axially. The amount of outward radial force exerted is greater in regions having more wire elements per unit length, which, in stmt 90, is achieved by having less space 99 between helix turns. Thus, scent has a greater outward radial force in center region 94 than in end regions 96 and 97.
Figure 9 illustrates still another embodiment of the invention in stmt 100, having a middle region 104 and end regions 106 and 107. Stent 100 has a tubular . shape formed of a wire 102, which is shaped into several springs 108 having a zig-zag pattern, each spring 108 radially encircling a segment of stmt 100, as indicated in Figure 10. Referring again to Figure 9, springs I08 are longitudinally interconnected with segments 109. Springs 108 and segments 109 in one embodiment are formed using standard wire bending jigs and techniques, including brazing segments 109 to springs 108. A preferred material for constructing stmt 100 is Nitinol. In another embodiment, springs and segments are formed by laser cutting a continuous-walled metallic tube, leaving only springs 108 and segments 109.
Figure 11 illustrates a wafer section in elevation taken along 11-11 in Figure 10. Wire elements 102 are illustrated in cross section in middle region and end region 107. The element thickness in width and/or length in end region 107, indicated at 101, is less than the element thickness in middle region 104, indicated at 103. Middle elements having thickness 103 can provide greater outward radial force than end elements having relatively lesser thickness 101.
The radial expansive force can also be varied by varying the frequency and/or amplitude of the zig-zag pattern.
Figure 12 illustrates, in highly diagrammatic form, a phantom line profile of another embodiment of the invention. A profile of stmt 110 is shown in phantom, having a middle region 114 and end regions 116 and 117. Stent 110 is formed, at least in part, from a shape memory material. In the preferred embodiment, stmt 110 is formed of Nitinol. Shape memory materials can be annealed into a first shape, heated, thereby setting the material structure, cooled, and deformed into a second shape. The first shape has an average outside diameter greater than the second. The material returns to the first, remembered shape at a phase transition temperature specific to the material composition.
Figure 12 illustrates the stmt shape to be remembered upon reaching body temperature. Stent 110 has a middle outside diameter 113 and end outside diameter 111, where the middle outside diameter is greater than the end outside diameter. Stent 110 can be compressed to fit within the delivery catheter, the delivery catheter advanced to a stenosis, and the stmt pushed out the delivery catheter distal end. Stent 110 then begins resuming the remember shape of Figure 12. The stenosed region typically has the arcuate shape of Figure 1. As stmt middle outside diameter 113 is greater than end outside diameter 111, and the vessel middle inside diameter is typically less than the vessel end inside diameters, stmt 110 can provide greater force in applying middle stmt region against middle vessel walls than in applying end stmt regions 117 and 116 against the end vessel walls.
Figure 13 illustrates another embodiment of the invention. In particular, Figure 13 illustrates a tubular stmt structure formed of elements meeting at junctions, where the junction size can be varied over the length of the stmt.
Stent 120 is shown having a structure 122 including elements 124. Elements 124 intersect each other at junction 130 as illustrated in detail in Figure 14.
Figure 15 illustrates a junction having a greater amount of material than the junction in Figure 14. In the embodiment of Figure 15, junction 132 has a greater surface - area than junction 130. Junctions having more material have greater capacity to provide radial outward force than junctions having less material. One embodiment of the invention has elements meeting or intersecting at junctions, where the junctions have more material in the tube middle region and less material in the tube end regions. In a preferred embodiment, the junctions are formed by laser cutting a Nitinol tube material.
In use, the tube can be compressed to fit within the delivery catheter, advanced to the stenosis, and pushed distally from the delivery catheter distal end.
As the tube regains its uncompressed shape, areas having a greater amount of material at the junctions are able to exert greater outward radial force.
Figure 16 illustrates an embodiment of the invention suitable for use across stenoses in narrowing vessel regions, such as the left coronary ostium.
Stent 140 has a first end region 147 and a second, opposite end region 146.
Stent 140 is similar to stmt 80 in Figure 7. The stmt tube includes wires 142 which are wound around the stmt and can be interwoven. As illustrated in Figure 16, wires 142 have a greater density per stmt unit length at second end region 146 than in first end region 147. This enables second end region 146 to provide greater outward radial force than first end region 147. Thus, first end region 147 can be suitably matched for narrow vessel region 58, with second end region 146 matched for wide vessel region 56.
Figure 17 illustrates another embodiment of the invention suitable for use across a stenosed, narrowing vessel region. Stent 150 extends from a first end region 157 to a second end region 156. Stent 150 is similar in construction to stmt 90 in Figure 8, including wires 152 formed into a helix or spiral 158.
Helix turns are spaced a distance 159 apart. As illustrated in Figure 17, helix turns are spaced further apart at first end region 157 than at second end region 156.
This spacing allows stmt 150 to provide greater outward radial force at second end region 156 than at first end region 157.
Figures 16 and 17 illustrate two embodiments having greater radial force at one end than the other. This property can be produced using other structures.
Another embodiment having this property is similar to a longitudinal half of Figure 9, having a greater element thickness at one end than the other. Yet another embodiment is similar to a longitudinal half of Figure 12, having a greater outside diameter at one end than the other.
Stems providing greater outward radial force at one end than another, as in the embodiments of Figures 16 and 17, allow a stmt to be placed across a stenosis in a narrowing vessel region as illustrated in Figure 4. The stmt end having a greater radial force can expand into the wider vessel region, while the stmt end having lesser radial force can expand to the narrower vessel region wall, but with less force than if required to expand as far as the stmt end in the wider vessel region. This can lessen unneeded force on the vessel wall while still holding the vessel open and keeping the stmt substantially out of the vessel flow path.
The present invention provides a stmt having a radial force varied along stmt length. The stent has been described, in use, as bridging stenosed vessel regions for illustrative purposes. Another use is maintaining open channels through inflamed or otherwise restricted body conduits. Stems used for other purposes are explicitly within the scope of the invention.

It should be noted that although self expanding stems have been shown herein to illustrate the present invention, so called balloon expandable stems can also include the variable expansion force feature as described herein. In the case of balloon expandable stems, however, these forces in general will be less than are necessary to expand the stmt and thus the balloon will be used as known to those skilled in the art to complete the expansion of the stem. These balloon expandable stems may be advantageously deployed in bending areas of a vessels such as at an ostium where a stmt having thus rigid or heavy members is desirable to enhance the flexibility of the stmt. It should be understood therefore, that balloon expandable stems are also within the scope of the present invention.
Numerous characteristics and advantages of the invention covered by this document have been set forth in the foregoing description. It will be understood, however, that this disclosure is, in many respects, only illustrative. Changes may be made in details, particularly in matters of shape, size, and arrangement of parts without exceeding the scope of the invention. The inventions's scope is, of course, defined in the language in which the appended claims are expressed.

Claims (5)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A stent having a length and a radius along said length comprising:
a tubular shaped structure, said structure, when compressed, having a radially outward biased force, said force being varied along said length, said tubular structure having a first end region having a first density of material per unit length, a middle region having a second density of material per unit length which is greater than said first density of material per unit length, and a second end region having a third density of material per unit length which is greater than said second density of material per unit length, wherein said force is weakest in said first end region, stronger in said middle region than in said first region, and stronger in said second end region than in said middle region.
2. The stent of claim 1 formed of Nitinol.
3. The stent of claim 1 wherein the tubular shaped structure includes a plurality of zig-zag bands, adjacent zig-zag bands connecting by interconnecting elements.
4. The stent of claim 1 wherein the tubular shaped structure includes a plurality of intersecting elements, the intersecting elements intersecting at a junction including an amount of material, the junction material amount being greater in the second end region than in the middle region and greater in the middle region than in the first end region.
5. The stent of claim 1 wherein the density of material per unit length of the stent varies along its length.
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Families Citing this family (242)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6896696B2 (en) 1998-11-20 2005-05-24 Scimed Life Systems, Inc. Flexible and expandable stent
US7204848B1 (en) 1995-03-01 2007-04-17 Boston Scientific Scimed, Inc. Longitudinally flexible expandable stent
WO1997032544A1 (en) 1996-03-05 1997-09-12 Divysio Solutions Ulc. Expandable stent and method for delivery of same
US6796997B1 (en) 1996-03-05 2004-09-28 Evysio Medical Devices Ulc Expandable stent
CA2192520A1 (en) 1996-03-05 1997-09-05 Ian M. Penn Expandable stent and method for delivery of same
US6432127B1 (en) 1996-10-11 2002-08-13 Transvascular, Inc. Devices for forming and/or maintaining connections between adjacent anatomical conduits
US6692483B2 (en) 1996-11-04 2004-02-17 Advanced Stent Technologies, Inc. Catheter with attached flexible side sheath
US6325826B1 (en) 1998-01-14 2001-12-04 Advanced Stent Technologies, Inc. Extendible stent apparatus
EP1723931B1 (en) 1996-11-04 2012-01-04 Advanced Stent Technologies, Inc. Extendible stent apparatus and method for deploying the same
US7591846B2 (en) 1996-11-04 2009-09-22 Boston Scientific Scimed, Inc. Methods for deploying stents in bifurcations
US6599316B2 (en) 1996-11-04 2003-07-29 Advanced Stent Technologies, Inc. Extendible stent apparatus
US6682536B2 (en) 2000-03-22 2004-01-27 Advanced Stent Technologies, Inc. Guidewire introducer sheath
US8211167B2 (en) 1999-12-06 2012-07-03 Boston Scientific Scimed, Inc. Method of using a catheter with attached flexible side sheath
US6835203B1 (en) 1996-11-04 2004-12-28 Advanced Stent Technologies, Inc. Extendible stent apparatus
US5827321A (en) * 1997-02-07 1998-10-27 Cornerstone Devices, Inc. Non-Foreshortening intraluminal prosthesis
US20040267350A1 (en) * 2002-10-30 2004-12-30 Roubin Gary S. Non-foreshortening intraluminal prosthesis
US6200335B1 (en) * 1997-03-31 2001-03-13 Kabushikikaisha Igaki Iryo Sekkei Stent for vessel
US5836966A (en) 1997-05-22 1998-11-17 Scimed Life Systems, Inc. Variable expansion force stent
CA2241558A1 (en) 1997-06-24 1998-12-24 Advanced Cardiovascular Systems, Inc. Stent with reinforced struts and bimodal deployment
US20040130599A1 (en) * 1997-07-15 2004-07-08 Silverbrook Research Pty Ltd Ink jet printhead with amorphous ceramic chamber
DE69838256T2 (en) * 1997-09-24 2008-05-15 Med Institute, Inc., West Lafayette RADIAL EXPANDABLE STENT
WO1999026559A1 (en) * 1997-11-25 1999-06-03 Triad Vascular Systems, Inc. Layered endovascular graft
US6395019B2 (en) 1998-02-09 2002-05-28 Trivascular, Inc. Endovascular graft
US5931866A (en) * 1998-02-24 1999-08-03 Frantzen; John J. Radially expandable stent featuring accordion stops
DK174814B1 (en) * 1998-02-25 2003-12-01 Cook William Europ stent device
US5938697A (en) * 1998-03-04 1999-08-17 Scimed Life Systems, Inc. Stent having variable properties
DE69935716T2 (en) * 1998-05-05 2007-08-16 Boston Scientific Ltd., St. Michael STENT WITH SMOOTH ENDS
DE19839646A1 (en) 1998-08-31 2000-03-09 Jomed Implantate Gmbh Stent
US7887578B2 (en) 1998-09-05 2011-02-15 Abbott Laboratories Vascular Enterprises Limited Stent having an expandable web structure
US20020019660A1 (en) * 1998-09-05 2002-02-14 Marc Gianotti Methods and apparatus for a curved stent
US7815763B2 (en) 2001-09-28 2010-10-19 Abbott Laboratories Vascular Enterprises Limited Porous membranes for medical implants and methods of manufacture
US6682554B2 (en) 1998-09-05 2004-01-27 Jomed Gmbh Methods and apparatus for a stent having an expandable web structure
US6755856B2 (en) 1998-09-05 2004-06-29 Abbott Laboratories Vascular Enterprises Limited Methods and apparatus for stenting comprising enhanced embolic protection, coupled with improved protection against restenosis and thrombus formation
SG75982A1 (en) * 1998-12-03 2000-10-24 Medinol Ltd Controlled detachment stents
US8382821B2 (en) 1998-12-03 2013-02-26 Medinol Ltd. Helical hybrid stent
US7655030B2 (en) 2003-07-18 2010-02-02 Boston Scientific Scimed, Inc. Catheter balloon systems and methods
US7018401B1 (en) 1999-02-01 2006-03-28 Board Of Regents, The University Of Texas System Woven intravascular devices and methods for making the same and apparatus for delivery of the same
WO2000044309A2 (en) * 1999-02-01 2000-08-03 Board Of Regents, The University Of Texas System Woven bifurcated and trifurcated stents and methods for making the same
CA2360620C (en) * 1999-02-01 2009-09-01 Hideki Hyodoh Woven intravascular devices and methods for making the same and apparatus for delivery of the same
EP1156758B1 (en) * 1999-02-26 2008-10-15 LeMaitre Vascular, Inc. Coiled stent
US6248122B1 (en) 1999-02-26 2001-06-19 Vascular Architects, Inc. Catheter with controlled release endoluminal prosthesis
US6325825B1 (en) 1999-04-08 2001-12-04 Cordis Corporation Stent with variable wall thickness
US6899730B1 (en) 1999-04-15 2005-05-31 Scimed Life Systems, Inc. Catheter-stent device
US6860899B1 (en) * 1999-04-15 2005-03-01 Boston Scientific Scimed, Inc. Method for treating neurovascular aneurysms
US6273911B1 (en) 1999-04-22 2001-08-14 Advanced Cardiovascular Systems, Inc. Variable strength stent
US6270521B1 (en) 1999-05-21 2001-08-07 Cordis Corporation Stent delivery catheter system for primary stenting
US6540774B1 (en) 1999-08-31 2003-04-01 Advanced Cardiovascular Systems, Inc. Stent design with end rings having enhanced strength and radiopacity
US6689156B1 (en) 1999-09-23 2004-02-10 Advanced Stent Technologies, Inc. Stent range transducers and methods of use
US20010047200A1 (en) 1999-10-13 2001-11-29 Raymond Sun Non-foreshortening intraluminal prosthesis
US6585758B1 (en) 1999-11-16 2003-07-01 Scimed Life Systems, Inc. Multi-section filamentary endoluminal stent
US6610087B1 (en) 1999-11-16 2003-08-26 Scimed Life Systems, Inc. Endoluminal stent having a matched stiffness region and/or a stiffness gradient and methods for providing stent kink resistance
US6423090B1 (en) 2000-02-11 2002-07-23 Advanced Cardiovascular Systems, Inc. Stent pattern with staged expansion
JP3527940B2 (en) * 2000-05-01 2004-05-17 筑波大学長 Stent to ensure patency of stenosis in body lumen
EP1284683B1 (en) * 2000-05-22 2011-08-10 OrbusNeich Medical, Inc. Self-expanding stent
US7632303B1 (en) 2000-06-07 2009-12-15 Advanced Cardiovascular Systems, Inc. Variable stiffness medical devices
US6652576B1 (en) 2000-06-07 2003-11-25 Advanced Cardiovascular Systems, Inc. Variable stiffness stent
US6652579B1 (en) 2000-06-22 2003-11-25 Advanced Cardiovascular Systems, Inc. Radiopaque stent
US6805704B1 (en) * 2000-06-26 2004-10-19 C. R. Bard, Inc. Intraluminal stents
WO2002015824A2 (en) * 2000-08-25 2002-02-28 Kensey Nash Corporation Covered stents, systems for deploying covered stents
US8070792B2 (en) 2000-09-22 2011-12-06 Boston Scientific Scimed, Inc. Stent
US6695833B1 (en) 2000-09-27 2004-02-24 Nellix, Inc. Vascular stent-graft apparatus and forming method
US6881217B2 (en) * 2000-10-13 2005-04-19 Henry M. Israel Stent assembly
US6547818B1 (en) 2000-10-20 2003-04-15 Endotex Interventional Systems, Inc. Selectively thinned coiled-sheet stents and methods for making them
US7976648B1 (en) 2000-11-02 2011-07-12 Abbott Cardiovascular Systems Inc. Heat treatment for cold worked nitinol to impart a shape setting capability without eventually developing stress-induced martensite
US6602272B2 (en) 2000-11-02 2003-08-05 Advanced Cardiovascular Systems, Inc. Devices configured from heat shaped, strain hardened nickel-titanium
US8192484B2 (en) * 2000-12-12 2012-06-05 Cardiatis S.A. Stent for blood flow improvement
US6855161B2 (en) 2000-12-27 2005-02-15 Advanced Cardiovascular Systems, Inc. Radiopaque nitinol alloys for medical devices
NZ540000A (en) 2001-02-16 2007-05-31 Abbott Lab Vascular Entpr Ltd Implants with tacrolimus
DE10118944B4 (en) 2001-04-18 2013-01-31 Merit Medical Systems, Inc. Removable, essentially cylindrical implants
US8617231B2 (en) 2001-05-18 2013-12-31 Boston Scientific Scimed, Inc. Dual guidewire exchange catheter system
US6605110B2 (en) 2001-06-29 2003-08-12 Advanced Cardiovascular Systems, Inc. Stent with enhanced bendability and flexibility
US7547321B2 (en) 2001-07-26 2009-06-16 Alveolus Inc. Removable stent and method of using the same
US6796999B2 (en) 2001-09-06 2004-09-28 Medinol Ltd. Self articulating stent
US20030176914A1 (en) * 2003-01-21 2003-09-18 Rabkin Dmitry J. Multi-segment modular stent and methods for manufacturing stents
EP1917931A3 (en) 2001-12-03 2013-02-27 Intek Technology LLC Multi-segment modular stent and methods for manufacturing stents
US20030135265A1 (en) * 2002-01-04 2003-07-17 Stinson Jonathan S. Prostheses implantable in enteral vessels
US20040068314A1 (en) * 2002-01-16 2004-04-08 Jones Donald K. Detachable self -expanding aneurysm cover device
EP1507494A2 (en) * 2002-05-06 2005-02-23 Abbott Laboratories Endoprosthesis for controlled contraction and expansion
EP1503700B1 (en) * 2002-05-08 2012-09-26 Abbott Laboratories Endoprosthesis having foot extensions
US6656220B1 (en) 2002-06-17 2003-12-02 Advanced Cardiovascular Systems, Inc. Intravascular stent
US20040133270A1 (en) * 2002-07-08 2004-07-08 Axel Grandt Drug eluting stent and methods of manufacture
WO2004026183A2 (en) 2002-09-20 2004-04-01 Nellix, Inc. Stent-graft with positioning anchor
US20040093056A1 (en) 2002-10-26 2004-05-13 Johnson Lianw M. Medical appliance delivery apparatus and method of use
US7875068B2 (en) 2002-11-05 2011-01-25 Merit Medical Systems, Inc. Removable biliary stent
US7527644B2 (en) 2002-11-05 2009-05-05 Alveolus Inc. Stent with geometry determinated functionality and method of making the same
US7637942B2 (en) 2002-11-05 2009-12-29 Merit Medical Systems, Inc. Coated stent with geometry determinated functionality and method of making the same
US7959671B2 (en) 2002-11-05 2011-06-14 Merit Medical Systems, Inc. Differential covering and coating methods
US8282678B2 (en) * 2002-11-13 2012-10-09 Allium Medical Solutions Ltd. Endoluminal lining
US20040102831A1 (en) * 2002-11-22 2004-05-27 Murray Robert J. Stent having tapered edges
US8105373B2 (en) 2002-12-16 2012-01-31 Boston Scientific Scimed, Inc. Flexible stent with improved axial strength
US7381222B2 (en) 2002-12-30 2008-06-03 Quiescence Medical, Inc. Stent for maintaining patency of a body region
US7992566B2 (en) 2002-12-30 2011-08-09 Quiescence Medical, Inc. Apparatus and methods for treating sleep apnea
US7316710B1 (en) * 2002-12-30 2008-01-08 Advanced Cardiovascular Systems, Inc. Flexible stent
US7647931B2 (en) 2002-12-30 2010-01-19 Quiescence Medical, Inc. Stent for maintaining patency of a body region
US6849084B2 (en) * 2002-12-31 2005-02-01 Intek Technology L.L.C. Stent delivery system
US7637934B2 (en) 2003-03-31 2009-12-29 Merit Medical Systems, Inc. Medical appliance optical delivery and deployment apparatus and method
US7604660B2 (en) 2003-05-01 2009-10-20 Merit Medical Systems, Inc. Bifurcated medical appliance delivery apparatus and method
US7942892B2 (en) 2003-05-01 2011-05-17 Abbott Cardiovascular Systems Inc. Radiopaque nitinol embolic protection frame
US7625398B2 (en) * 2003-05-06 2009-12-01 Abbott Laboratories Endoprosthesis having foot extensions
US7625401B2 (en) * 2003-05-06 2009-12-01 Abbott Laboratories Endoprosthesis having foot extensions
US7226473B2 (en) * 2003-05-23 2007-06-05 Brar Balbir S Treatment of stenotic regions
US20040236414A1 (en) * 2003-05-23 2004-11-25 Brar Balbir S. Devices and methods for treatment of stenotic regions
US7112216B2 (en) 2003-05-28 2006-09-26 Boston Scientific Scimed, Inc. Stent with tapered flexibility
US7247986B2 (en) * 2003-06-10 2007-07-24 Samsung Sdi. Co., Ltd. Organic electro luminescent display and method for fabricating the same
US20040260384A1 (en) * 2003-06-17 2004-12-23 Medtronic Ave Superelastic coiled stent
US7105015B2 (en) * 2003-06-17 2006-09-12 Medtronic Vascular, Inc. Method and system for treating an ostium of a side-branch vessel
US9039755B2 (en) 2003-06-27 2015-05-26 Medinol Ltd. Helical hybrid stent
US9155639B2 (en) 2009-04-22 2015-10-13 Medinol Ltd. Helical hybrid stent
DE10335649A1 (en) * 2003-07-30 2005-02-24 Jotec Gmbh Braid stent for implantation in a blood vessel
US7628806B2 (en) * 2003-08-20 2009-12-08 Boston Scientific Scimed, Inc. Stent with improved resistance to migration
US8298280B2 (en) 2003-08-21 2012-10-30 Boston Scientific Scimed, Inc. Stent with protruding branch portion for bifurcated vessels
US7344557B2 (en) 2003-11-12 2008-03-18 Advanced Stent Technologies, Inc. Catheter balloon systems and methods
US7258697B1 (en) 2003-12-22 2007-08-21 Advanced Cardiovascular Systems, Inc. Stent with anchors to prevent vulnerable plaque rupture during deployment
US7763011B2 (en) * 2003-12-22 2010-07-27 Boston Scientific Scimed, Inc. Variable density braid stent
US7402170B2 (en) * 2003-12-30 2008-07-22 Scimed Life Systems, Inc. Crimp and weld wire connection
US20050185061A1 (en) * 2004-02-23 2005-08-25 Andy Baker Self photographing camera system
WO2005094283A2 (en) 2004-03-25 2005-10-13 Hauser David L Vascular filter device
US20050222672A1 (en) * 2004-04-01 2005-10-06 Cappella, Inc. Ostial stent
US8048145B2 (en) 2004-07-22 2011-11-01 Endologix, Inc. Graft systems having filling structures supported by scaffolds and methods for their use
EP1789029A2 (en) 2004-08-30 2007-05-30 Interstitial Therapeutics Methods and compositions for the treatment of cell proliferation
US7887579B2 (en) 2004-09-29 2011-02-15 Merit Medical Systems, Inc. Active stent
EP1848368A1 (en) * 2004-12-20 2007-10-31 Cook Incorporated Intraluminal support frame and medical devices including the support frame
US7763198B2 (en) 2005-04-12 2010-07-27 Abbott Cardiovascular Systems Inc. Method for retaining a vascular stent on a catheter
US7381048B2 (en) * 2005-04-12 2008-06-03 Advanced Cardiovascular Systems, Inc. Stents with profiles for gripping a balloon catheter and molds for fabricating stents
US7947207B2 (en) 2005-04-12 2011-05-24 Abbott Cardiovascular Systems Inc. Method for retaining a vascular stent on a catheter
US8628565B2 (en) * 2005-04-13 2014-01-14 Abbott Cardiovascular Systems Inc. Intravascular stent
EP1903999B1 (en) 2005-04-25 2018-11-21 Covidien LP Controlled fracture connections for stents
US7731654B2 (en) 2005-05-13 2010-06-08 Merit Medical Systems, Inc. Delivery device with viewing window and associated method
WO2007005800A1 (en) 2005-06-30 2007-01-11 Abbott Laboratories Endoprosthesis having foot extensions
JP2009500121A (en) 2005-07-07 2009-01-08 ネリックス・インコーポレーテッド System and method for treatment of an intraluminal aneurysm
WO2007013065A2 (en) 2005-07-25 2007-02-01 Rainbow Medical Ltd. Electrical stimulation of blood vessels
US20070061003A1 (en) * 2005-09-15 2007-03-15 Cappella, Inc. Segmented ostial protection device
US20070088428A1 (en) * 2005-09-15 2007-04-19 Cappella, Inc. Intraluminal device with asymmetric cap portion
US8551153B2 (en) * 2005-12-20 2013-10-08 Cordis Corporation Prosthesis comprising a coiled stent and method of use thereof
US20070225749A1 (en) 2006-02-03 2007-09-27 Martin Brian B Methods and devices for restoring blood flow within blocked vasculature
US8821561B2 (en) 2006-02-22 2014-09-02 Boston Scientific Scimed, Inc. Marker arrangement for bifurcation catheter
US8043358B2 (en) * 2006-03-29 2011-10-25 Boston Scientific Scimed, Inc. Stent with overlap and high extension
US8348991B2 (en) * 2006-03-29 2013-01-08 Boston Scientific Scimed, Inc. Stent with overlap and high expansion
US8240020B2 (en) * 2006-06-30 2012-08-14 Advanced Cardiovascular Systems, Inc. Stent retention mold and method
EP2037850A2 (en) 2006-07-06 2009-03-25 Quiescence Medical Inc Apparatus and methods for treating sleep apnea
US7988720B2 (en) 2006-09-12 2011-08-02 Boston Scientific Scimed, Inc. Longitudinally flexible expandable stent
US20080065192A1 (en) * 2006-09-13 2008-03-13 Medtronic Vascular, Inc. Compliance Graded Stent
MX344492B (en) 2006-10-22 2016-12-16 Idev Tech Inc * Devices and methods for stent advancement.
EP3034046B1 (en) 2006-10-22 2018-01-17 IDEV Technologies, INC. Methods for securing strand ends and the resulting devices
US8512392B2 (en) * 2007-03-09 2013-08-20 Boston Scientific Scimed, Inc. Stent design with struts of various angles and stiffness
US8016874B2 (en) 2007-05-23 2011-09-13 Abbott Laboratories Vascular Enterprises Limited Flexible stent with elevated scaffolding properties
US8128679B2 (en) 2007-05-23 2012-03-06 Abbott Laboratories Vascular Enterprises Limited Flexible stent with torque-absorbing connectors
US8216209B2 (en) 2007-05-31 2012-07-10 Abbott Cardiovascular Systems Inc. Method and apparatus for delivering an agent to a kidney
US9364586B2 (en) 2007-05-31 2016-06-14 Abbott Cardiovascular Systems Inc. Method and apparatus for improving delivery of an agent to a kidney
US9144509B2 (en) 2007-05-31 2015-09-29 Abbott Cardiovascular Systems Inc. Method and apparatus for delivering an agent to a kidney
US9149610B2 (en) 2007-05-31 2015-10-06 Abbott Cardiovascular Systems Inc. Method and apparatus for improving delivery of an agent to a kidney
US20080319535A1 (en) * 2007-06-25 2008-12-25 Medtronic Vascular, Inc. Vascular Stent and Method of Making Vascular Stent
US8486134B2 (en) 2007-08-01 2013-07-16 Boston Scientific Scimed, Inc. Bifurcation treatment system and methods
US8226701B2 (en) 2007-09-26 2012-07-24 Trivascular, Inc. Stent and delivery system for deployment thereof
US8663309B2 (en) 2007-09-26 2014-03-04 Trivascular, Inc. Asymmetric stent apparatus and method
US8066755B2 (en) 2007-09-26 2011-11-29 Trivascular, Inc. System and method of pivoted stent deployment
EP2194921B1 (en) 2007-10-04 2018-08-29 TriVascular, Inc. Modular vascular graft for low profile percutaneous delivery
US8083789B2 (en) 2007-11-16 2011-12-27 Trivascular, Inc. Securement assembly and method for expandable endovascular device
US8328861B2 (en) 2007-11-16 2012-12-11 Trivascular, Inc. Delivery system and method for bifurcated graft
US7850726B2 (en) 2007-12-20 2010-12-14 Abbott Laboratories Vascular Enterprises Limited Endoprosthesis having struts linked by foot extensions
US8920488B2 (en) 2007-12-20 2014-12-30 Abbott Laboratories Vascular Enterprises Limited Endoprosthesis having a stable architecture
US8337544B2 (en) 2007-12-20 2012-12-25 Abbott Laboratories Vascular Enterprises Limited Endoprosthesis having flexible connectors
US8291781B2 (en) 2007-12-21 2012-10-23 Schlumberger Technology Corporation System and methods for actuating reversibly expandable structures
WO2009088953A2 (en) 2007-12-31 2009-07-16 Boston Scientific Scimed Inc. Bifurcation stent delivery system and methods
US8538535B2 (en) 2010-08-05 2013-09-17 Rainbow Medical Ltd. Enhancing perfusion by contraction
AU2009240419A1 (en) 2008-04-25 2009-10-29 Nellix, Inc. Stent graft delivery system
US10716573B2 (en) 2008-05-01 2020-07-21 Aneuclose Janjua aneurysm net with a resilient neck-bridging portion for occluding a cerebral aneurysm
US10028747B2 (en) 2008-05-01 2018-07-24 Aneuclose Llc Coils with a series of proximally-and-distally-connected loops for occluding a cerebral aneurysm
US8377108B2 (en) 2008-06-02 2013-02-19 Boston Scientific Scimed, Inc. Staggered two balloon bifurcation catheter assembly and methods
JP2011522615A (en) 2008-06-04 2011-08-04 ネリックス・インコーポレーテッド Sealing device and method of use
WO2009149410A1 (en) 2008-06-05 2009-12-10 Boston Scientific Scimed, Inc. Deflatable bifurcated device
EP2299945B1 (en) 2008-06-05 2016-03-23 Boston Scientific Scimed, Inc. Balloon bifurcated lumen treatment
US8734502B2 (en) 2008-12-17 2014-05-27 Cook Medical Technologies Llc Tapered stent and flexible prosthesis
WO2010102307A1 (en) 2009-03-06 2010-09-10 Lazarus Effect, Inc. Retrieval systems and methods for use thereof
US8795345B2 (en) * 2009-07-08 2014-08-05 Concentric Medical, Inc. Vascular and bodily duct treatment devices and methods
US8795317B2 (en) * 2009-07-08 2014-08-05 Concentric Medical, Inc. Embolic obstruction retrieval devices and methods
US8529596B2 (en) 2009-07-08 2013-09-10 Concentric Medical, Inc. Vascular and bodily duct treatment devices and methods
US8357179B2 (en) * 2009-07-08 2013-01-22 Concentric Medical, Inc. Vascular and bodily duct treatment devices and methods
US20110009941A1 (en) * 2009-07-08 2011-01-13 Concentric Medical, Inc. Vascular and bodily duct treatment devices and methods
US8357178B2 (en) * 2009-07-08 2013-01-22 Concentric Medical, Inc. Vascular and bodily duct treatment devices and methods
US8366765B2 (en) * 2009-09-18 2013-02-05 Medtronic Vascular, Inc. Helical stent with connections
US9358140B1 (en) 2009-11-18 2016-06-07 Aneuclose Llc Stent with outer member to embolize an aneurysm
US20110276078A1 (en) 2009-12-30 2011-11-10 Nellix, Inc. Filling structure for a graft system and methods of use
WO2011126572A2 (en) * 2010-04-07 2011-10-13 Office Of Technology Transfer An expandable stent that collapses into a non-convex shape and expands into an expanded, convex shape
US20130109987A1 (en) * 2011-05-12 2013-05-02 Medical Device Innovations Inc. Method and device for treatment of arrhythmias and other maladies
WO2011143443A2 (en) * 2010-05-12 2011-11-17 Medical Device Innovations Llc Method and device for treatment of arrhythmias and other maladies
US9023095B2 (en) 2010-05-27 2015-05-05 Idev Technologies, Inc. Stent delivery system with pusher assembly
CN101926699A (en) * 2010-07-13 2010-12-29 北京迈迪顶峰医疗科技有限公司 Atrial septal pore-forming scaffold and conveyor thereof
WO2012009675A2 (en) 2010-07-15 2012-01-19 Lazarus Effect, Inc. Retrieval systems and methods for use thereof
US9265649B2 (en) 2010-12-13 2016-02-23 Quiescence Medical, Inc. Apparatus and methods for treating sleep apnea
EP2658484A1 (en) 2010-12-30 2013-11-06 Boston Scientific Scimed, Inc. Multi stage opening stent designs
US8801768B2 (en) 2011-01-21 2014-08-12 Endologix, Inc. Graft systems having semi-permeable filling structures and methods for their use
WO2012106657A2 (en) 2011-02-04 2012-08-09 Concentric Medical, Inc. Vascular and bodily duct treatment devices and methods
CN103391757B (en) 2011-03-03 2016-01-20 波士顿科学国际有限公司 Low strain dynamic high strength support
US8790388B2 (en) 2011-03-03 2014-07-29 Boston Scientific Scimed, Inc. Stent with reduced profile
EP2693980B1 (en) 2011-04-06 2022-07-13 Endologix LLC System for endovascular aneurysm treatment
EP3741314B1 (en) 2011-05-23 2022-12-21 Covidien LP Retrieval systems
US9526637B2 (en) 2011-09-09 2016-12-27 Enopace Biomedical Ltd. Wireless endovascular stent-based electrodes
US8992595B2 (en) 2012-04-04 2015-03-31 Trivascular, Inc. Durable stent graft with tapered struts and stable delivery methods and devices
US9498363B2 (en) 2012-04-06 2016-11-22 Trivascular, Inc. Delivery catheter for endovascular device
NZ716708A (en) 2012-05-14 2016-08-26 Bard Inc C R Uniformly expandable stent
US8784434B2 (en) 2012-11-20 2014-07-22 Inceptus Medical, Inc. Methods and apparatus for treating embolism
USD723165S1 (en) 2013-03-12 2015-02-24 C. R. Bard, Inc. Stent
JP6533776B2 (en) 2013-03-14 2019-06-19 エンドーロジックス インコーポレイテッド System for treating an aneurysm in a patient's body and method of operating the same
US9907684B2 (en) 2013-05-08 2018-03-06 Aneuclose Llc Method of radially-asymmetric stent expansion
EP3010453A1 (en) 2013-06-21 2016-04-27 Christopher G. Kunis Implant device with stablizer
EP3013285A1 (en) * 2013-06-26 2016-05-04 Christopher G. Kunis Implant device with spine and c-ring
EP3065673A4 (en) * 2013-11-06 2017-07-12 Enopace Biomedical Ltd. Wireless endovascular stent-based electrodes
CN106456347B (en) * 2014-03-18 2018-11-13 波士顿科学国际有限公司 Reduce the support Design of granulation and inflammation
KR101631492B1 (en) * 2014-08-11 2016-06-17 주식회사 바이오알파 Vascular Stent
US9693860B2 (en) * 2014-12-01 2017-07-04 Medtronic, Inc. Segmented transcatheter valve prosthesis having an unsupported valve segment
WO2016130647A1 (en) 2015-02-11 2016-08-18 Lazarus Effect, Inc. Expandable tip medical devices and methods
AU2016341439B2 (en) 2015-10-23 2021-07-08 Inari Medical, Inc. Intravascular treatment of vascular occlusion and associated devices, systems, and methods
EP3435930B1 (en) 2016-03-31 2022-11-30 Vesper Medical, Inc. Intravascular implants
US10022255B2 (en) 2016-04-11 2018-07-17 Idev Technologies, Inc. Stent delivery system having anisotropic sheath
WO2018080590A1 (en) 2016-10-24 2018-05-03 Inari Medical Devices and methods for treating vascular occlusion
US10722257B2 (en) 2017-05-12 2020-07-28 Covidien Lp Retrieval of material from vessel lumens
US11191555B2 (en) 2017-05-12 2021-12-07 Covidien Lp Retrieval of material from vessel lumens
US11298145B2 (en) 2017-05-12 2022-04-12 Covidien Lp Retrieval of material from vessel lumens
US11129630B2 (en) 2017-05-12 2021-09-28 Covidien Lp Retrieval of material from vessel lumens
US10709464B2 (en) 2017-05-12 2020-07-14 Covidien Lp Retrieval of material from vessel lumens
WO2018232044A1 (en) 2017-06-12 2018-12-20 Covidien Lp Tools for sheathing treatment devices and associated systems and methods
CN109124840A (en) * 2017-06-19 2019-01-04 上海微创医疗器械(集团)有限公司 A kind of method and medical device of the binding force improving bracket and sacculus
US10478322B2 (en) 2017-06-19 2019-11-19 Covidien Lp Retractor device for transforming a retrieval device from a deployed position to a delivery position
US10575864B2 (en) 2017-06-22 2020-03-03 Covidien Lp Securing element for resheathing an intravascular device and associated systems and methods
US10849769B2 (en) 2017-08-23 2020-12-01 Vesper Medical, Inc. Non-foreshortening stent
US11000682B2 (en) 2017-09-06 2021-05-11 Inari Medical, Inc. Hemostasis valves and methods of use
US10271977B2 (en) * 2017-09-08 2019-04-30 Vesper Medical, Inc. Hybrid stent
US11628076B2 (en) 2017-09-08 2023-04-18 Vesper Medical, Inc. Hybrid stent
US11357650B2 (en) 2019-02-28 2022-06-14 Vesper Medical, Inc. Hybrid stent
EP4238539A3 (en) 2017-10-25 2023-10-18 Boston Scientific Scimed, Inc. Stent with atraumatic spacer
US10888444B2 (en) 2017-11-01 2021-01-12 Boston Scientific Scimed, Inc. Esophageal stent including a valve member
JP6984953B2 (en) * 2018-01-16 2021-12-22 オリンパス株式会社 Urinary stent
US11154314B2 (en) 2018-01-26 2021-10-26 Inari Medical, Inc. Single insertion delivery system for treating embolism and associated systems and methods
US11364134B2 (en) * 2018-02-15 2022-06-21 Vesper Medical, Inc. Tapering stent
US10500078B2 (en) 2018-03-09 2019-12-10 Vesper Medical, Inc. Implantable stent
EP3836855A4 (en) 2018-08-13 2022-08-10 Inari Medical, Inc. System for treating embolism and associated devices and methods
US11684498B2 (en) 2018-10-19 2023-06-27 Inspire M.D Ltd. Methods of using a self-adjusting stent assembly and kits including same
CN110314024B (en) * 2019-06-26 2021-11-05 北京工业大学 Conformal adherent endovascular stent
EP4044938A4 (en) 2019-10-16 2023-11-15 Inari Medical, Inc. Systems, devices, and methods for treating vascular occlusions
US10881541B1 (en) * 2020-05-01 2021-01-05 Krishna Rocha-Singh Systems and methods for treating venous compression/obstruction syndromes
US11400299B1 (en) 2021-09-14 2022-08-02 Rainbow Medical Ltd. Flexible antenna for stimulator

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183372A1 (en) * 1984-10-19 1986-06-04 RAYCHEM CORPORATION (a Delaware corporation) Prosthetic stent
IL94138A (en) * 1990-04-19 1997-03-18 Instent Inc Device for the treatment of constricted fluid conducting ducts
US5064435A (en) * 1990-06-28 1991-11-12 Schneider (Usa) Inc. Self-expanding prosthesis having stable axial length
US5108417A (en) * 1990-09-14 1992-04-28 Interface Biomedical Laboratories Corp. Anti-turbulent, anti-thrombogenic intravascular stent
DE4104702C2 (en) * 1991-02-15 1996-01-18 Malte Neuss Implants for organ pathways in spiral form
FR2683449A1 (en) * 1991-11-08 1993-05-14 Cardon Alain ENDOPROTHESIS FOR TRANSLUMINAL IMPLANTATION.
DK6192A (en) * 1992-01-20 1993-07-21 Engineers & Doctors As SEGMENTALLY EXPANDABLE TUBULAR ENDOLUMINAL PROSTHESIS
FR2688401B1 (en) * 1992-03-12 1998-02-27 Thierry Richard EXPANDABLE STENT FOR HUMAN OR ANIMAL TUBULAR MEMBER, AND IMPLEMENTATION TOOL.
GR920100104A (en) * 1992-03-13 1993-11-30 Christodoulos I Stefanadis Temporary luminal stent for the support of the vascular wall.
US5540712A (en) * 1992-05-01 1996-07-30 Nitinol Medical Technologies, Inc. Stent and method and apparatus for forming and delivering the same
DE69333161T2 (en) * 1992-05-08 2004-06-03 Schneider (Usa) Inc., Plymouth Stent for the esophagus
DE4303181A1 (en) * 1993-02-04 1994-08-11 Angiomed Ag Implantable catheter
FR2714815B1 (en) 1994-01-10 1996-03-08 Microfil Ind Sa Elastic prosthesis to widen a duct, in particular a blood vessel.
EP0666065A1 (en) * 1994-02-02 1995-08-09 Katsushi Mori Stent for biliary, urinary or vascular system
US5609627A (en) 1994-02-09 1997-03-11 Boston Scientific Technology, Inc. Method for delivering a bifurcated endoluminal prosthesis
US5556413A (en) * 1994-03-11 1996-09-17 Advanced Cardiovascular Systems, Inc. Coiled stent with locking ends
US5449373A (en) * 1994-03-17 1995-09-12 Medinol Ltd. Articulated stent
US5683411A (en) * 1994-04-06 1997-11-04 William Cook Europe A/S Medical article for implantation into the vascular system of a patient
CA2147813A1 (en) * 1994-04-28 1995-10-29 Richard Dixon Intravascular prosthesis with anti-thrombogenic coating
DE4418336A1 (en) * 1994-05-26 1995-11-30 Angiomed Ag Stent for widening and holding open receptacles
DE69528216T2 (en) * 1994-06-17 2003-04-17 Terumo Corp Process for the production of a permanent stent
JP3577353B2 (en) * 1995-01-27 2004-10-13 テルモ株式会社 In-vivo stent
US5575818A (en) * 1995-02-14 1996-11-19 Corvita Corporation Endovascular stent with locking ring
WO1996028116A1 (en) * 1995-03-10 1996-09-19 Cardiovascular Concepts, Inc. Tubular endoluminar prosthesis having oblique ends
DE19512342C2 (en) * 1995-04-01 1998-05-14 Webasto Karosseriesysteme Vehicle roof
BE1009277A3 (en) * 1995-04-12 1997-01-07 Corvita Europ Guardian self-expandable medical device introduced in cavite body, and method of preparation.
BE1009278A3 (en) * 1995-04-12 1997-01-07 Corvita Europ Guardian self-expandable medical device introduced in cavite body, and medical device with a stake as.
EP0740928B1 (en) * 1995-04-12 2004-07-07 Corvita Europe Self-expanding stent for introducing a medical device in a body cavity and manufacturing process
US5824037A (en) * 1995-10-03 1998-10-20 Medtronic, Inc. Modular intraluminal prostheses construction and methods
ATE218052T1 (en) 1995-11-27 2002-06-15 Schneider Europ Gmbh STENT FOR USE IN A PHYSICAL PASSAGE
US5658308A (en) * 1995-12-04 1997-08-19 Target Therapeutics, Inc. Bioactive occlusion coil
WO1997025937A1 (en) * 1996-01-18 1997-07-24 Jang G David Programmable variably flexible modular stents
US5938682A (en) * 1996-01-26 1999-08-17 Cordis Corporation Axially flexible stent
US5843117A (en) * 1996-02-14 1998-12-01 Inflow Dynamics Inc. Implantable vascular and endoluminal stents and process of fabricating the same
CA2192520A1 (en) * 1996-03-05 1997-09-05 Ian M. Penn Expandable stent and method for delivery of same
US5868780A (en) * 1996-03-22 1999-02-09 Lashinski; Robert D. Stents for supporting lumens in living tissue
NZ331269A (en) * 1996-04-10 2000-01-28 Advanced Cardiovascular System Expandable stent, its structural strength varying along its length
US5922021A (en) * 1996-04-26 1999-07-13 Jang; G. David Intravascular stent
US5617878A (en) * 1996-05-31 1997-04-08 Taheri; Syde A. Stent and method for treatment of aortic occlusive disease
US5807404A (en) 1996-09-19 1998-09-15 Medinol Ltd. Stent with variable features to optimize support and method of making such stent
US5776142A (en) * 1996-12-19 1998-07-07 Medtronic, Inc. Controllable stent delivery system and method
US5868782A (en) * 1996-12-24 1999-02-09 Global Therapeutics, Inc. Radially expandable axially non-contracting surgical stent
US5827321A (en) 1997-02-07 1998-10-27 Cornerstone Devices, Inc. Non-Foreshortening intraluminal prosthesis
US5817126A (en) * 1997-03-17 1998-10-06 Surface Genesis, Inc. Compound stent
US6200335B1 (en) 1997-03-31 2001-03-13 Kabushikikaisha Igaki Iryo Sekkei Stent for vessel
US5868783A (en) * 1997-04-16 1999-02-09 Numed, Inc. Intravascular stent with limited axial shrinkage
US5836966A (en) 1997-05-22 1998-11-17 Scimed Life Systems, Inc. Variable expansion force stent
US5913895A (en) * 1997-06-02 1999-06-22 Isostent, Inc. Intravascular stent with enhanced rigidity strut members
DE19728337A1 (en) * 1997-07-03 1999-01-07 Inst Mikrotechnik Mainz Gmbh Implantable stent
US5855600A (en) * 1997-08-01 1999-01-05 Inflow Dynamics Inc. Flexible implantable stent with composite design
US6179867B1 (en) 1998-01-16 2001-01-30 Advanced Cardiovascular Systems, Inc. Flexible stent and method of use
US5938697A (en) * 1998-03-04 1999-08-17 Scimed Life Systems, Inc. Stent having variable properties
US6273910B1 (en) 1999-03-11 2001-08-14 Advanced Cardiovascular Systems, Inc. Stent with varying strut geometry
US6273911B1 (en) 1999-04-22 2001-08-14 Advanced Cardiovascular Systems, Inc. Variable strength stent

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US6146403A (en) 2000-11-14
EP1598032B1 (en) 2011-03-23
EP1001718B1 (en) 2005-09-14
EP1001718A2 (en) 2000-05-24
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DE69831575T2 (en) 2006-02-02

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