US6945994B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined balloon-expanding and self-expanding stent
Assignee: Boston Scientific Scimed Inc
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Filing: 2001-12-05
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Granted: 2005-09-20
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Expires: 2021-12-05
Abstract
Abstract A stent comprises a plurality of segments including a first balloon expandable segment which is not self-expanding, a second balloon expandable segment which is not self-expanding and a first self-expanding segment. The first self-expanding segment is disposed between the first and second balloon expandable segments. The segments are axially displaced from one another.
Inventors
- 👤 Michael John Stephen Austin
- 👤 Barry O'Brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:41
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91533; A61F2250/00; A61F2250/0014; A61F2250/0018; A61F2250/0048
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
An unexpanded stent comprising a plurality of segments including: a first balloon expandable segment which is not self-expanding, the first balloon expandable segment defining a plurality of balloon expandable cells therein; a second balloon expandable segment which is not self-expanding, the second balloon expandable segment defining a plurality of balloon expandable cells therein; and a plurality of self-expanding segments, each self-expanding segment being non-abutting to any other self-expanding segment, some of the plurality of self-expanding segments being longitudinally and circumferentially offset from one another, each self-expanding segment defining a plurality of self-expanding cells therein, the self-expanding cells made of a shape memory material; the stent having a distal-most end and a proximal-most end, each end constructed of balloon expandable material.
Claim 2
Dependent Claim
120 words
An unexpanded stent comprising a plurality of segments including: a first balloon expandable segment which is not self-expanding, the first balloon expandable segment defining a plurality of balloon expandable cells therein; a second balloon expandable segment which is not self-expanding, the second balloon expandable segment defining a plurality of balloon expandable cells therein; and a plurality of self-expanding segments, each self-expanding segment being non-abutting to any other self-expanding segment, some of the plurality of self-expanding segments being longitudinally and circumferentially offset from one another, each self-expanding segment defining a plurality of self-expanding cells therein, the self-expanding cells made of a shape memory material; the stent having a distal-most end and a proximal-most end, each end constructed of balloon expandable material.
Claim 3
Dependent Claim
15 words
The stent of claim 1 wherein the self-expanding segments are regularly distributed about the stent.
Claim 4
Dependent Claim
15 words
The stent of claim 1 comprising more balloon expandable but non-self-expanding cells than self-expanding cells.
Claim 5
Dependent Claim
12 words
The stent of claim 1 wherein the stent has a protective covering.
Claim 6
Dependent Claim
20 words
The stent of claim 1 wherein at least 50% of the stent is made from one piece balloon expandable metal.
Claim 7
Dependent Claim
19 words
The stent of claim 1 wherein at least one self-expanding segment is located at an end of the stent.
Claim 8
Dependent Claim
11 words
The stent of claim 1 wherein the segments are irregularly shaped.
Claim 9
Dependent Claim
26 words
The stent of claim 1 wherein the balloon expandable segments are made of stainless steel and the self-expanding segments are made of a shape memory alloy.
Claim 10
Dependent Claim
16 words
The stent of claim 8 wherein the shape memory alloy is FeMnSiCrNi shape memory stainless steel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-09-19 | 2009-03-21 | 2009-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-09-19 | 2013-03-21 | 2013-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-09-19 | 2017-03-21 | 2017-09-20 | $7700.00 | Window Closed / Lapsed |