US20030074044A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent delivery system
Assignee: Individual
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Filing: 2001-10-16
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Granted: —
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Expires: 2021-10-16
Abstract
Abstract A stent delivery system 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. The stent is positioned around the distal portion of the catheter and is thereby expanded. The system further comprises retaining sleeves which are attached to the catheter and abut the ends of the stent to prevent axial movement and to aid in the retention of the stent.
Inventors
- 👤 John Randby
- 👤 Fernando DiCaprio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61F2002/9583
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
158 words
1 . A stent delivery system comprising: a catheter comprising an expandable distal portion, having an outer diameter, constructed and arranged for expanding the outer diameter of said expandable distal portion 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, the stent being sized in said contracted condition to surround said expandable distal portion in its contracted state, said stent having a first end and a second end, wherein at least a portion of the stent may be positioned over a portion of said expandable portion of said catheter; and a first sleeve in the region of said distal portion of said catheter positioned around said catheter, the first sleeve having a first end attached to said catheter and a second end, said second end of the first sleeve abutting the first end of the stent.
Claim 2
Dependent Claim
158 words
1 . A stent delivery system comprising: a catheter comprising an expandable distal portion, having an outer diameter, constructed and arranged for expanding the outer diameter of said expandable distal portion 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, the stent being sized in said contracted condition to surround said expandable distal portion in its contracted state, said stent having a first end and a second end, wherein at least a portion of the stent may be positioned over a portion of said expandable portion of said catheter; and a first sleeve in the region of said distal portion of said catheter positioned around said catheter, the first sleeve having a first end attached to said catheter and a second end, said second end of the first sleeve abutting the first end of the stent.
Claim 3
Dependent Claim
28 words
2 . The stent delivery system of claim 1 , wherein the stent is expanded by expansion of said balloon and the stent is mounted on the balloon.
Claim 4
Dependent Claim
58 words
3 . The stent delivery system of claim 1 , further comprising a second sleeve in the region of said distal portion of said catheter positioned around said catheter, the second sleeve having a first end attached to said catheter and a second end, said second end of the first sleeve abutting the second end of the stent.
Claim 5
Dependent Claim
64 words
4 . The stent delivery system of claim 1 , wherein the second end of the first sleeve has a thickness and the first end of the stent has a thickness similar to that of the second end of the first sleeve, such that profile transition from the second end of the first sleeve and the first end of the stent is relatively smooth.
Claim 6
Dependent Claim
64 words
5 . The stent delivery system of claim 3 , wherein the second end of the first sleeve has a thickness and the first end of the stent has a thickness similar to that of the second end of the first sleeve, such that profile transition from the second end of the first sleeve and the first end of the stent is relatively smooth.
Claim 7
Dependent Claim
22 words
6 . The stent delivery system of claim 1 , said first sleeve being formed in the shape of a thin-walled tube.
Claim 8
Dependent Claim
14 words
7 . The stent delivery system of claim 1 , further comprising an outer
Claim 9
Dependent Claim
16 words
8 . The stent delivery system of claim 3 , said sleeves being formed from polyurethane.
Claim 10
Dependent Claim
32 words
9 . The stent delivery system of claim 3 , said sleeves being formed from any elastomer able to be expanded with a balloon angioplasty catheter, and formable into a thin-walled tube.
Claim 11
Dependent Claim
25 words
10 . The stent delivery system of claim 1 , wherein the second end of the first sleeve has an annular region of increased thickness.
Claim 12
Dependent Claim
24 words
11 . The stent delivery system of claim 3 , wherein the second ends of the sleeves have an annular region of increased thickness.
Claim 13
Dependent Claim
25 words
12 . The stent delivery system of claim 10 , wherein the annular region of increase thickness is in the form of a bulbous bulge.
Claim 14
Dependent Claim
25 words
13 . The stent delivery system of claim 11 , wherein the annular regions of increase thickness are in the form of a bulbous bulge.
Claim 15
Dependent Claim
39 words
14 . The stent delivery system of claim 1 , said first sleeve being formed in the shape of a coil, such that the second end of the first sleeve is urged against the first end of the stent.
Claim 16
Dependent Claim
36 words
15 . The stent delivery system of claim 3 , said sleeves being formed in the shape of a coil, such that the second ends of the sleeves are urged against the ends of the stent.
Claim 17
Dependent Claim
29 words
16 . The stent delivery system of claim 1 , said second end of said first sleeve having greater thickness relative to the first end of the first sleeve.
Claim 18
Dependent Claim
27 words
17 . The stent delivery system of claim 3 , said second ends of said sleeves having greater thickness relative to the first ends of the sleeves.
Claim 19
Dependent Claim
27 words
18 . The stent delivery system of claim 1 , wherein the second end of the first sleeve does not overlap the first end of the stent.
Claim 20
Dependent Claim
25 words
19 . The stent delivery system of claim 3 , wherein the second ends of the sleeves do not overlap the ends of the stent.
Claim 21
Dependent Claim
101 words
20 . The stent delivery system of claim 3 , wherein the second ends of the sleeves are urged against the ends of the stent, whereby when said expandable distal portion is expanded from said contracted state to said expanded state said stent is expanded, the center portion of the stent being expanded first while the expansion of the ends of the stent are delayed until the release force between the second ends of the sleeves and the ends of the stent are overcome by the expansion of the expandable distal portion, thereby providing an overall uniform expansion of the stent.
References Cited (Backward Citations)
US6136011A
Cited
US6592568B2
Cited
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