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WO1998007388B1 - Stent delivery system - Google Patents

Stent delivery system

Info

Publication number
WO1998007388B1
WO1998007388B1 PCT/US1997/014141 US9714141W WO9807388B1 WO 1998007388 B1 WO1998007388 B1 WO 1998007388B1 US 9714141 W US9714141 W US 9714141W WO 9807388 B1 WO9807388 B1 WO 9807388B1
Authority
WO
WIPO (PCT)
Prior art keywords
stent
catheter
delivery system
sleeve
expanded
Prior art date
Application number
PCT/US1997/014141
Other languages
French (fr)
Other versions
WO1998007388A1 (en
Filing date
Publication date
Priority claimed from US08/702,149 external-priority patent/US5980530A/en
Application filed filed Critical
Priority to AU40622/97A priority Critical patent/AU4062297A/en
Priority to EP97938245A priority patent/EP0932376B1/en
Priority to DE69718192T priority patent/DE69718192T2/en
Priority to AT97938245T priority patent/ATE230244T1/en
Publication of WO1998007388A1 publication Critical patent/WO1998007388A1/en
Publication of WO1998007388B1 publication Critical patent/WO1998007388B1/en

Links

Abstract

A stent delivery system (10) to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent (20) positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon (14) within which there is included on the catheter shaft at least one body (22, 24) of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.

Claims

[received by the International Bureau on 13 February 1998 (13.02.98); original claims 11 , 24 and 33 amended; remaining claims unchanged (4 pages)]
6. The stent delivery system of claim 2. said ring being formed in the shape of a coil.
7. The stent delivery system of claim 6 wherein said coil is plastic.
8. The stent delivery system of claim 6 wherein the coil is metal. 9. The stent delivery system of claim 6 wherein the ring is metal.
10. The stent delivery system of claim 6 wherein the ring is plastic.
11. The stent delivery system of claim 1 , said stent having a first and second end portion lying over said expandable portion of said catheter, the delivery system comprising: a first and second sleeve in the region of said distal portion of said catheter and positioned around said catheter, each having a first end fixed to said catheter, and a second end lying over said first and second ends of said stent: and a first and second ring, each being respectively attached to said first and second sleeves and positioned around said ends of said stent, said first sleeve and first ring and said second sleeve and second ring separately engaging said stent at said first end and said second end respectively and said first and second sleeves and rings fixing said ends of said stent on said catheter when said catheter is in the contracted state, said catheter and stent cooperatively constructed or arranged for expansion of said catheter from said contracted state to said expanded state to cause expansion of said stent. including said first and second ends of said stent, from said contracted condition to said expanded condition, and thereby causing said sleeves and rings to slide relatively axially from over the margins of said stent. thereby simultaneously releasing said ends of the stent from said catheter.
12. The stent delivery system of claim 11 wherein said expansible distal poπion comprises a balloon mounted on a shaft of the catheter, whereby said stent is expanded by expansion of said balloon.
13. The stent delivery system of claim 1 1. said sleeve being formed from polyurethane.
14. The stent delivery system of claim 11, said sleeve being formed from any elastomer able to be expanded with a balloon angiopiasty catheter, and formable into a thin-walled tube in the shape of a cylinder. 23. The stent delivery system of claim 18, wherein said expansible distal portion comprises a balloon mounted on a shaft of the catheter.
24. The stent delivery system of claim 23, wherein said stent is expanded by expansion of said balloon and wherein there are two coils, opposingly positioned, in the region of said distal portion of said catheter and positioned around said catheter, having respective first ends fixed to said catheter, and respective second ends defining a margin lying over said end portions of said stent; said coils fixing said ends of said stent on said catheter when said catheter is in the contracted state, said catheter and stent cooperatively constructed and arranged to cause expansion of said catheter from said contracted state to said expanded state and to cause expansion of said stent, including said end of said stent, from said contracted condition to said expanded condition, thereby causing said coils to slide relatively axially from over the margins of said stent. thereby releasing said end of the stent from said catheter. 25. The stent delivery system of claims 18 or 24, said stent having first and second end portions, each end portion defining a margin lying over said expandable portion of said catheter, the delivery system comprising, a first and second coil in the region of said distal portion of said catheter positioned around said catheter, each having a first end fixed to said catheter and a second end defining a margin lying over said ends of said stent, said first coil and said second coil separately engaging said stent at said first end and said second end respectively, said coil fixing said ends of said stent on said catheter when said catheter is in the contracted state, said catheter and stent cooperatively constructed and arranged for expansion of said catheter from said contracted state to said expanded state to cause said coils to slide relatively axially from over the margins of said stent. thereby simultaneously releasing said ends of the stent from said catheter.
26. The stent delivery system of claim 1 wherein said expansible distal poπion comprises a balloon, whereby said stent is expanded by expansion of said balloon, having at least one cone portion mounted on a shaft of the catheter and wherein the ring is positioned between the cone portion and the sleeve when the balloon is in its contracted state. 27. The stent delivery system of claim 26, said sleeve being formed from polyurethane.
28. The stent delivery system of claim 26. said sleeve being formed from any elastomer able to be expanded with a balloon angiopiasty catheter, and formable into a thin-walled tube in the shape of a cylinder.
29. The stent delivery system of claim 26, said end of said stent being a proximal end, wherein said sleeve covers said stent at the proximal end of said stent.
30. The stent delivery system of claim 26, said ring being formed in the shape of a coil formed of plastic or metal. 31. The stent delivery system of claim 30 wherein said coil is plastic or metal.
32. The stent delivery system of claim 26 wherein the ring is metal or plastic.
33. The stent delivery system of claim 1 , said stent having a first and second end portion lying over said expandable portion of said catheter, the delivery system comprising: a first and second sleeve in the region of said distal portion of said catheter and positioned around said catheter, each having a first end fixed to said catheter, and a second end lying over said respective end portions of said stent; and a first and second ring, each being respectively attached to said first and second sleeves and positioned between said sleeves and said expandable portion of said catheter, wherein said expansible distal portion comprises a balloon having cone portions mounted on a shaft of the catheter and wherein the rings are positioned between the cone portions and the respective sleeves when the balloon is in its contracted state, said first sleeve and said second sleeve separately engaging said stent at said first end and said second end respectively, said first and second sleeves covering said ends of said stent on said catheter when said catheter is in the contracted state, and said rings being adhered to said sleeves between said sleeves and said expandable portion of the catheter distal and proximal to said distal and proximal ends of said stent, respectively, said catheter and stent cooperatively constructed or arranged for expansion of said catheter from said contracted state to said expanded state to cause expansion of said stent, including said first and second ends of said stent, from said contracted condition to said expanded condition, and thereby causing said rings to slide relatively axially, drawing said sleeve from over said stent, thereby releasing said end of the stent from said catheter.
34. The stent delivery system of claim 33, said sleeve being formed from polyurethane. 35. The stent delivery system of claim 33, said sleeve being formed from any elastomer able to be expanded with a balloon angiopiasty catheter, and formable into a thin- walled tube in the shape of a cylinder.
36. The stent delivery system of claim 33, said ring being formed in the shape of a coil of plastic or metal. 37. The stent delivery system of claim 33 wherein the ring is metal or plastic.
38. A stent delivery system comprising: a catheter comprising an expandable distal portion constructed and arranged for expanding the outer diameter of said catheter from a contracted state to an expanded state; a stent positioned around said distal portion of said catheter, said stent having a contracted condition and being expandable to an expanded condition, and being sized in said contracted condition to closely surround said catheter in the contracted state, said stent having at least an end portion lying over said expandable portion of said catheter; and a sleeve in the region of said distal portion of said catheter and positioned around said catheter, having a first end fixed to said catheter, and a second end lying over said end portion of said stent, the sleeve having a substantially rigid annular portion integral with the sleeve material, said sleeve retaining said end of said stent on said catheter when said catheter is in the contracted state, said catheter and stent cooperatively constructed and arranged for expansion of said catheter from said contracted state to said expanded state and to cause said sleeve and rigid annular portion to slide relatively axially, drawing said sleeve from over said stent, thereby releasing said end of the stent from said catheter.
PCT/US1997/014141 1996-08-23 1997-08-22 Stent delivery system WO1998007388A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU40622/97A AU4062297A (en) 1996-08-23 1997-08-22 Stent delivery system
EP97938245A EP0932376B1 (en) 1996-08-23 1997-08-22 Stent delivery system
DE69718192T DE69718192T2 (en) 1996-08-23 1997-08-22 SYSTEM FOR ATTACHING A STENT
AT97938245T ATE230244T1 (en) 1996-08-23 1997-08-22 SYSTEM FOR APPLYING A STENT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/702,149 US5980530A (en) 1996-08-23 1996-08-23 Stent delivery system
US08/702,149 1996-08-23

Publications (2)

Publication Number Publication Date
WO1998007388A1 WO1998007388A1 (en) 1998-02-26
WO1998007388B1 true WO1998007388B1 (en) 1998-03-26

Family

ID=24820045

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/014141 WO1998007388A1 (en) 1996-08-23 1997-08-22 Stent delivery system

Country Status (6)

Country Link
US (4) US5980530A (en)
EP (1) EP0932376B1 (en)
AT (1) ATE230244T1 (en)
AU (1) AU4062297A (en)
DE (1) DE69718192T2 (en)
WO (1) WO1998007388A1 (en)

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