US6152957A
Expired / Lapsed
US
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Intravascular stent
Assignee: Boston Scientific Scimed Inc
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Filing: 1997-03-25
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Granted: 2000-11-28
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Expires: 2017-03-25
Abstract
Abstract A stent assembly includes a balloon and an expandable stent positioned at an exterior of the balloon. The stent includes a first expansion strut. A plurality of the first expansion struts form a first expansion column. A plurality of second expansion struts form a second expansion column. A plurality of the first connecting struts form a first connecting strut column. Each of a first expansion strut of the first expansion column is coupled to a second expansion strut of the second expansion column. The first connecting strut includes a proximal section coupled to a distal section and at least a portion of the first connecting strut includes a first linear section and a first slant angle.
Inventors
- 👤 G. David Jang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/958; A61F2002/91525; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2250/00; A61F2250/0014; A61F2250/0018
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
559 words
A stent in a non-expanded state, comprising: a first expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a joining strut of the first expansion strut pair that couples the first and second expansion struts at a distal end of the first expansion strut pair, a plurality of the first expansion strut pair forming a first expansion column; a second expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a joining strut of the second expansion strut pair that couples the first and second expansion struts of the second expansion strut pair at a proximal end of the second expansion strut pair, a plurality of the second expansion strut pair forming a second expansion column; a first connecting strut including a first connecting strut proximal head section and first connecting strut distal tail section, the head section being coupled to the distal end of the first expansion strut pair in the first expansion column and the tail section being coupled to the proximal end of the second expansion strut pair of the second expansion column, a plurality of the first connecting strut forming a first connecting strut column that couples the first expansion column to the second expansion column, the tail section extending in a first lateral direction relative to a longitudinal axis of the head section to form a first slant angle; a third expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a third joining strut of the third expansion strut pair that couples the first and second expansion struts at a proximal end of the third expansion strut pair, a plurality of the third expansion strut pair forming a third expansion column, the first expansion strut of the first expansion strut pair in the first expansion column having a longitudinal axis that is parallel to and offset from a longitudinal axis of the first expansion strut of the second expansion strut pair in the second expansion column, and the second expansion strut of the third expansion strut pair in the third expansion column having a longitudinal axis that is parallel to and offset from a longitudinal axis of the first expansion strut of the second expansion strut pair of the second expansion column; a second connecting strut including a proximal head section and a distal tail section, the head section being coupled to the distal end of the second expansion strut pair in the second expansion column and the tail section being coupled to the proximal end of the third expansion strut pair of the third expansion column, a plurality of the second connecting strut forming a second connecting strut column that couples the second expansion column to the third expansion column, wherein the tail section extends in a second lateral direction relative to a longitudinal axis of the head section to form a second slant angle that extends in an opposite direction from the first lateral direction; and wherein a ratio of a number of expansion struts in an expansion strut column to a number of connecting struts in a connecting strut column is 2 to 1 and the first slant angle reduces a fore shortening of the stent between the first and second expansion columns when the stent is in an expanded state.
Claim 2
Dependent Claim
559 words
A stent in a non-expanded state, comprising: a first expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a joining strut of the first expansion strut pair that couples the first and second expansion struts at a distal end of the first expansion strut pair, a plurality of the first expansion strut pair forming a first expansion column; a second expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a joining strut of the second expansion strut pair that couples the first and second expansion struts of the second expansion strut pair at a proximal end of the second expansion strut pair, a plurality of the second expansion strut pair forming a second expansion column; a first connecting strut including a first connecting strut proximal head section and first connecting strut distal tail section, the head section being coupled to the distal end of the first expansion strut pair in the first expansion column and the tail section being coupled to the proximal end of the second expansion strut pair of the second expansion column, a plurality of the first connecting strut forming a first connecting strut column that couples the first expansion column to the second expansion column, the tail section extending in a first lateral direction relative to a longitudinal axis of the head section to form a first slant angle; a third expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a third joining strut of the third expansion strut pair that couples the first and second expansion struts at a proximal end of the third expansion strut pair, a plurality of the third expansion strut pair forming a third expansion column, the first expansion strut of the first expansion strut pair in the first expansion column having a longitudinal axis that is parallel to and offset from a longitudinal axis of the first expansion strut of the second expansion strut pair in the second expansion column, and the second expansion strut of the third expansion strut pair in the third expansion column having a longitudinal axis that is parallel to and offset from a longitudinal axis of the first expansion strut of the second expansion strut pair of the second expansion column; a second connecting strut including a proximal head section and a distal tail section, the head section being coupled to the distal end of the second expansion strut pair in the second expansion column and the tail section being coupled to the proximal end of the third expansion strut pair of the third expansion column, a plurality of the second connecting strut forming a second connecting strut column that couples the second expansion column to the third expansion column, wherein the tail section extends in a second lateral direction relative to a longitudinal axis of the head section to form a second slant angle that extends in an opposite direction from the first lateral direction; and wherein a ratio of a number of expansion struts in an expansion strut column to a number of connecting struts in a connecting strut column is 2 to 1 and the first slant angle reduces a fore shortening of the stent between the first and second expansion columns when the stent is in an expanded state.
Claim 3
Dependent Claim
25 words
The stent of claim 1, wherein the stent includes m first and second expansion columns, n expansion struts per column and n (m-1)/2 connecting struts.
Claim 4
Dependent Claim
17 words
The stent of claim 1, wherein the first and second expansion columns are each unbroken, continuous structures.
Claim 5
Dependent Claim
19 words
The stent of claim 1, wherein each of the first slant angles is directed in a first circumferential direction.
Claim 6
Dependent Claim
15 words
The stent of claim 1, wherein the first connecting strut includes a third slant angle.
Claim 7
Dependent Claim
32 words
The stent of claim 1, wherein a width of a portion of the first connecting struts is equal to or less than a width of a portion of the first expansion struts.
Claim 8
Dependent Claim
29 words
The stent of claim 1, wherein a width of a portion of the first connecting struts is larger than a width of a portion of the first expansion struts.
Claim 9
Dependent Claim
31 words
The stent of claim 1, wherein a width of a portion of the second expansion struts is substantially the same as a width of a portion of the first expansion struts.
Claim 10
Dependent Claim
44 words
The stent of claim 1, further comprising: a reenforcement expansion column made of a plurality of reenforcement expansion struts, wherein each reenforcement expansion strut has a width that is greater than a width of an expansion strut in the first or second expansion columns.
Claim 11
Dependent Claim
28 words
The stent of claim 1, wherein the stent has a proximal end with a first reenforcement expansion column and a distal end with a second reenforcement expansion column.
Claim 12
Dependent Claim
21 words
The stent of claim 1, wherein at least a portion of the first connecting struts have a first radius of curvature.
Claim 13
Dependent Claim
25 words
The stent of claim 11, wherein the portion of the first connecting struts with the first radius of curvature have a second radius of curvature.
Claim 14
Dependent Claim
41 words
The stent of claim 1, wherein at least a portion of the first connecting struts have first linear sections coupled to joining struts of first expansion strut pairs and second linear sections coupled to joining struts of second expansion strut pairs.
Claim 15
Dependent Claim
51 words
The stent of claim 1, wherein at least a portion of the first connecting struts have first linear sections coupled to joining struts of first expansion strut pairs, second linear sections coupled to joining struts of second expansion strut pairs and third linear sections coupling the first and second linear sections.
Claim 16
Dependent Claim
52 words
The stent of claim 1, wherein at least a portion of the first connecting struts have first linear sections coupled to joining struts of first expansion strut pairs, second linear sections coupled to joining struts of second expansion strut pairs, third and fourth linear sections coupling the first and second linear sections.
Claim 17
Dependent Claim
13 words
The stent of claim 1, wherein the stent further includes a radiopaque marker.
Claim 18
Dependent Claim
12 words
The stent of claim 1, wherein the stent includes an electroplated material.
Claim 19
Dependent Claim
16 words
The stent of claim 1, wherein in an expanded state the stent has a tapered diameter.
Claim 20
Dependent Claim
129 words
A stent assembly, comprising: a balloon; and an expandable stent positioned at an exterior of the balloon, the stent including, a first expansion strut, a plurality of the first expansion strut forming a first expansion column; a second expansion strut, a plurality of the second expansion strut forming a second expansion column; and a first connecting strut, a plurality of the first connecting strut forming a first connecting strut column, each of a first connecting strut connecting a first expansion strut of the first expansion column to a second expansion strut of the second expansion column, the first connecting strut including a proximal section coupled to a distal section and at least a portion of the first connecting strut including a first linear section and a first slant angle.
Claim 21
Dependent Claim
129 words
A stent assembly, comprising: a balloon; and an expandable stent positioned at an exterior of the balloon, the stent including, a first expansion strut, a plurality of the first expansion strut forming a first expansion column; a second expansion strut, a plurality of the second expansion strut forming a second expansion column; and a first connecting strut, a plurality of the first connecting strut forming a first connecting strut column, each of a first connecting strut connecting a first expansion strut of the first expansion column to a second expansion strut of the second expansion column, the first connecting strut including a proximal section coupled to a distal section and at least a portion of the first connecting strut including a first linear section and a first slant angle.
Claim 22
Dependent Claim
12 words
The assembly of claim 19, wherein the balloon has a tapered geometry.
Claim 23
Dependent Claim
31 words
The assembly of claim 19, wherein a proximal end and a distal end of the connecting strut are circumferentially offset from each another when the stent is in a non-expanded state.
Claim 24
Dependent Claim
31 words
The assembly of claim 19, wherein a proximal end and a distal end of the connecting strut are circumferentially offset from each another when the stent is in an expanded state.
Claim 25
Dependent Claim
34 words
The assembly of claim 19, wherein a ratio of a number of expansion struts in an expansion strut column to a number of connecting struts in an connecting strut column is 2 to 1.
Claim 26
Dependent Claim
39 words
The assembly of claim 19, wherein the connecting strut has a geometry which provides for a reduction of a fore shortening of the stent between the first and second expansion columns when the stent is in an expanded state.
Claim 27
Dependent Claim
25 words
The assembly of claim 19, wherein the stent includes m first and second expansion columns, n expansion struts per column and n (m-1)/2 connecting struts.
Claim 28
Dependent Claim
17 words
The stent of claim 19, wherein the first and second expansion columns are each unbroken, continuous structures.
Claim 29
Dependent Claim
20 words
The stent of claim 19, wherein each first connecting strut first slant angle is directed in a first circumferential direction.
Claim 30
Dependent Claim
15 words
The stent of claim 19, wherein the first connecting strut includes a second slant angle.
Claim 31
Dependent Claim
29 words
The stent of claim 19, wherein the first expansion strut of the first expansion column is longitudinally offset from a corresponding second expansion strut of the second expansion column.
Claim 32
Dependent Claim
16 words
The stent of claim 1, wherein the stent has a tapered diameter in an expanded state.
Claim 33
Dependent Claim
25 words
The stent of claim 1, wherein the stent has a tapered geometry extending from a proximal end to a distal end in an expanded state.
Claim 34
Dependent Claim
15 words
The stent assembly of claim 19, wherein the balloon is tapered in an expanded state.
Claim 35
Dependent Claim
27 words
The stent assembly of claim 32, wherein the balloon in an expanded state is curved along a longitudinal axis from a proximal end to a distal end.
Claim 36
Dependent Claim
26 words
The stent assembly of claim 32, wherein the balloon is tapered in an expanded state and the stent has a non-tapered geometry in an expanded state.
Claim 37
Dependent Claim
19 words
The stent assembly of claim 32, wherein the balloon and the stent are both tapered in an expanded state.
Claim 38
Dependent Claim
15 words
The stent assembly of claim 33, wherein the stent is non-tapered in an expanded state.
Claim 39
Dependent Claim
15 words
The stent assembly of claim 33, wherein the stent is tapered in an expanded state.
Claim 40
Dependent Claim
23 words
The stent of claim 1, wherein the stent includes an electroplated material at a stent proximal end and at a stent distal end.
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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) | 2003-11-28 | 2004-05-29 | 2004-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-28 | 2008-05-29 | 2008-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-28 | 2012-05-29 | 2012-11-28 | $7700.00 | Window Closed / Lapsed |