US20030018376A1
Expired / Lapsed
US
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Enhanced stent delivery system
Assignee: X Technologies Inc
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Filing: 2002-03-19
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Granted: —
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Expires: 2022-03-19
Abstract
Abstract A stent delivery system is comprised of an elongated flexible advancement member which terminates in a tubular tracking member slidable over a guidewire. An inflatable balloon has proximal and distal ends, the proximal end communicating with an inflation channel, and the distal end attaching to the tracking member. The balloon portion is coextensive with but not attached to the advancement member, which is external to the balloon. A stent is positioned around the inflatable balloon, and when the balloon is inflated, the stent expands radially. The outer surface of the expanded stent has one or more projections that enhance retention of the stent.
Inventors
- 👤 Ronald Solar
- 👤 Glen Lieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:47
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61F; A61F2/00; A61F2/95; A61F2/958; A61M25/0105; A61M25/06; A61M25/0662; A61M25/10; A61M25/104; A61M2025/0008; A61M2025/0177; A61M2025/0183; A61M2025/1043; A61M2025/1056; A61M2025/1061; A61M2025/1093; A61M29/00; A61M29/02; A61M2029/025; A61M25/0067; A61M25/0068; A61M25/007; A61M25/0108
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
145 words
1 . A stent delivery system comprising: a stent having an outer surface; a flexible elongated advancement member having a proximal end and a distal end; a tracking member having a proximal end and a distal end, said tracking member being adapted to slide over a guidewire and being fixedly attached to the distal end of the advancement member; an inflation channel; and an inflatable balloon having a proximal end and a distal end, the proximal end of the balloon being in fluid communication with the inflation channel, wherein only the distal end of the balloon is attached to the tracking member, wherein the stent is arranged concentric to the balloon and the advancement member, wherein the advancement member is external to the balloon, and wherein when the balloon expands, it causes one or more projections to form in the outer surface of the stent.
Claim 2
Dependent Claim
145 words
1 . A stent delivery system comprising: a stent having an outer surface; a flexible elongated advancement member having a proximal end and a distal end; a tracking member having a proximal end and a distal end, said tracking member being adapted to slide over a guidewire and being fixedly attached to the distal end of the advancement member; an inflation channel; and an inflatable balloon having a proximal end and a distal end, the proximal end of the balloon being in fluid communication with the inflation channel, wherein only the distal end of the balloon is attached to the tracking member, wherein the stent is arranged concentric to the balloon and the advancement member, wherein the advancement member is external to the balloon, and wherein when the balloon expands, it causes one or more projections to form in the outer surface of the stent.
Claim 3
Dependent Claim
18 words
2 . The delivery system of claim 1 , wherein the tracking member comprises two or more lumens.
Claim 4
Dependent Claim
22 words
3 . The delivery system of claim 1 , wherein the balloon is attached to the distal end of the tracking member.
Claim 5
Dependent Claim
22 words
4 . The delivery system of claim 1 , wherein the balloon is attached to the proximal end of the tracking member.
Claim 6
Dependent Claim
17 words
5 . The delivery system of claim 1 , wherein the tracking member has a lubricious coating.
Claim 7
Dependent Claim
19 words
6 . The delivery system of claim 1 , wherein the tracking member is formed integral with the balloon.
Claim 8
Dependent Claim
106 words
7 . A stent delivery system comprising: a stent having an outer surface; a flexible elongated advancement member having a proximal end and a distal end; an inflatable balloon having a proximal end and a distal end; and an inflation channel, the proximal end of the balloon being in fluid communication with the inflation channel, wherein the distal end of the balloon is attached to the distal end of the advancement member, wherein the stent is arranged concentric to the balloon and the advancement member, and wherein when the balloon expands, it causes one or more projections to form in the outer surface of the stent.
Claim 9
Dependent Claim
106 words
7 . A stent delivery system comprising: a stent having an outer surface; a flexible elongated advancement member having a proximal end and a distal end; an inflatable balloon having a proximal end and a distal end; and an inflation channel, the proximal end of the balloon being in fluid communication with the inflation channel, wherein the distal end of the balloon is attached to the distal end of the advancement member, wherein the stent is arranged concentric to the balloon and the advancement member, and wherein when the balloon expands, it causes one or more projections to form in the outer surface of the stent.
Claim 10
Dependent Claim
25 words
8 . The delivery system of claim 7 , wherein the balloon is folded to form a tracking member adapted to slide over a guidewire.
Claim 11
Dependent Claim
22 words
9 . The delivery system of claim 1 or 7 , wherein the inflation channel is substantially coextensive with the advancement member.
Claim 12
Dependent Claim
24 words
10 . The delivery system of claim 1 or 7 , wherein the inflation channel is in a spiral configuration around the advancement member.
Claim 13
Dependent Claim
24 words
11 . The delivery system of claim 1 or 7 , wherein the advancement member comprises a flexible wire, hypotubing, or a combination thereof.
Claim 14
Dependent Claim
29 words
12 . The delivery system of claim 1 or 7 , wherein the advancement member is rigid at its proximal end and increasingly more flexible as it extends distally.
Claim 15
Dependent Claim
19 words
13 . The delivery system of claim 1 or 7 , wherein the inflation channel is collapsible or noncollapsible.
Claim 16
Dependent Claim
24 words
14 . The delivery system of claim 1 or 7 , wherein the balloon or the inflation channel, or both, have a wire reinforcement.
Claim 17
Dependent Claim
21 words
15 . The delivery system of claim 1 or 7 , wherein the balloon and the inflation channel are formed integral.
Claim 18
Dependent Claim
26 words
16 . The delivery system of claim 1 or 7 , wherein the inflation channel is attached to the advancement member at at least one point.
Claim 19
Dependent Claim
25 words
17 . The delivery system of claim 1 or 7 , which also comprises a torquer attached to the proximal end of the advancement member.
Claim 20
Dependent Claim
21 words
18 . The delivery system of claim 1 or 7 , wherein the inflation channel is unattached to the advancement member.
Claim 21
Dependent Claim
77 words
19 . A method of positioning a stent at a desired location within a patient's body, which comprises the steps of: (a) advancing a stent delivery system of claim 1 or 7 through a corporeal lumen so that the distal end of said delivery system is positioned at a desired location, and (b) inflating the balloon to cause the stent to expand radially and to cause one or more projections on the outer surface of the stent.
Claim 22
Dependent Claim
35 words
20 . The method of claim 19 , wherein in an additional step (c) another delivery system or other medical device is subsequently advanced distally over the advancement member of claim 1 or 7 .
Claim 23
Dependent Claim
108 words
21 . A method of positioning a stent at a desired location within a patient's body, which comprises the steps of: (a) advancing a guidewire having a distal end through a corporeal lumen so that the guidewire distal end is positioned at a desired location, (b) advancing a stent delivery system of claim 1 or 7 over the guidewire and through the corporeal lumen so that the distal end of said delivery system is positioned at the same or different desired location, and (c) inflating the balloon to cause the stent to expand radially and to cause one or more projections on the outer surface of the stent.
Claim 24
Dependent Claim
28 words
22 . The method of claim 21 , wherein in an additional step (d) another delivery system or other medical device is subsequently advanced distally over the guidewire.
References Cited (Backward Citations)
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