US5935162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire-tubular hybrid stent
Assignee: Medtronic Inc
•
Filing: 1998-03-16
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Granted: 1999-08-10
•
Expires: 2018-03-16
Abstract
Abstract Radially-expandable stents are provided with improved longitudinal flexibility and stability, improved torsional flexibility and stability, improved trackability and conformability, and improved hoop strength. The stents combine the advantages typically associated with wire stents with those typically associated longitudinal stability. The stents include a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent, a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements having a center section and two outside legs, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections. Methods of implanting the stents in body lumens are also disclosed.
Inventors
- 👤 Kenny L. Dang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:26
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91508; A61F2002/91516; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2002/91566; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
164 words
A radially expandable stent for implantation within a body vessel, comprising: a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent; a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements comprising a center section and two outside legs, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections.
Claim 2
Dependent Claim
164 words
A radially expandable stent for implantation within a body vessel, comprising: a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent; a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements comprising a center section and two outside legs, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections.
Claim 3
Dependent Claim
30 words
A stent according to claim 1, wherein the center section of each of the W-shaped elements is shorter in the longitudinal direction than the outside legs of the W-shaped element.
Claim 4
Dependent Claim
36 words
A stent according to claim 1, wherein the center section of each of the W-shaped elements have a longitudinal length that is about half of the longitudinal length of the outside legs of the W-shaped element.
Claim 5
Dependent Claim
85 words
A stent according to claim 1, wherein the stent comprises first, second, and third cylindrical sections arranged along the longitudinal axis in that order, and further wherein the tie members connecting the center sections of the pairs of W-shaped elements that open towards each other in the first and second cylindrical sections are offset about the circumference of the stent from the tie members connecting the centers of the pairs of W-shaped elements that open towards each other in the second and third cylindrical sections.
Claim 6
Dependent Claim
29 words
A stent according to claim 1, wherein the center section of each of the W-shaped elements is connected to the outside legs of the W-shaped element with rounded bends.
Claim 7
Dependent Claim
15 words
A stent according to claim 1, wherein the cylindrical sections are in-phase with each other.
Claim 8
Dependent Claim
15 words
A stent according to claim 1, wherein the cylindrical sections are out-of-phase with each other.
Claim 9
Dependent Claim
267 words
A radially expandable stent for implantation within a body vessel, comprising: a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent; a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements comprising a center section and two outside legs, wherein the center section of each of the W-shaped elements is shorter in the longitudinal direction than the outside legs of the W-shaped element, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections; wherein the stent comprises first, second, and third cylindrical sections arranged along the longitudinal axis in that order, and further wherein the tie members connecting the center sections of the pairs of W-shaped elements that open towards each other in the first and second cylindrical sections are offset about the circumference of the stent from the tie members connecting the centers of the pairs of W-shaped elements that open towards each other in the second and third cylindrical sections.
Claim 10
Dependent Claim
267 words
A radially expandable stent for implantation within a body vessel, comprising: a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent; a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements comprising a center section and two outside legs, wherein the center section of each of the W-shaped elements is shorter in the longitudinal direction than the outside legs of the W-shaped element, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections; wherein the stent comprises first, second, and third cylindrical sections arranged along the longitudinal axis in that order, and further wherein the tie members connecting the center sections of the pairs of W-shaped elements that open towards each other in the first and second cylindrical sections are offset about the circumference of the stent from the tie members connecting the centers of the pairs of W-shaped elements that open towards each other in the second and third cylindrical sections.
Claim 11
Dependent Claim
29 words
A stent according to claim 8, wherein the center section of each of the W-shaped elements is connected to the outside legs of the W-shaped element with rounded bends.
Claim 12
Dependent Claim
15 words
A stent according to claim 8, wherein the cylindrical sections are in-phase with each other.
Claim 13
Dependent Claim
15 words
A stent according to claim 8, wherein the cylindrical sections are out-of-phase with each other.
Claim 14
Independent Claim
202 words
A method of implanting a radially expandable stent within a body lumen comprising the steps of: a) providing the radially expandable stent in a compressed state comprising: a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent, a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements comprising a center section and two outside legs, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections; b) advancing the stent to a desired location within a body lumen; and c) radially expanding the stent within the body lumen.
Claim 15
Independent Claim
202 words
A method of implanting a radially expandable stent within a body lumen comprising the steps of: a) providing the radially expandable stent in a compressed state comprising: a plurality of cylindrical sections successively arranged along a longitudinal axis of the stent, a plurality of W-shaped elements in each of the cylindrical sections, each of the W-shaped elements comprising a center section and two outside legs, the plurality of W-shaped elements in each of the cylindrical sections opening in alternating directions along the longitudinal axis of the stent, wherein the W-shaped elements in adjacent cylindrical sections alternate between pairs of W-shaped elements that open towards each other along the longitudinal axis and pairs of W-shaped elements that open away from each other along the longitudinal axis when moving about the circumference of the adjacent cylindrical sections; and a plurality of tie members connecting adjacent cylindrical sections along the longitudinal axis of the stent, the tie members connecting center sections of the pairs of W-shaped elements that open towards each other along the longitudinal axis in each pair of adjacent cylindrical sections; b) advancing the stent to a desired location within a body lumen; and c) radially expanding the stent within the body lumen.
Claim 16
Dependent Claim
30 words
A method according to claim 12, wherein the center section of each of the W-shaped elements is shorter in the longitudinal direction than the outside legs of the W-shaped element.
Claim 17
Dependent Claim
36 words
A method according to claim 12, wherein the center section of each of the W-shaped elements have a longitudinal length that is about half of the longitudinal length of the outside legs of the W-shaped element.
Claim 18
Dependent Claim
85 words
A method according to claim 12, wherein the stent comprises first, second, and third cylindrical sections arranged along the longitudinal axis in that order, and further wherein the tie members connecting the center sections of the pairs of W-shaped elements that open towards each other in the first and second cylindrical sections are offset about the circumference of the stent from the tie members connecting the centers of the pairs of W-shaped elements that open towards each other in the second and third cylindrical sections.
Claim 19
Dependent Claim
29 words
A method according to claim 12, wherein the center section of each of the W-shaped elements is connected to the outside legs of the W-shaped element with rounded bends.
Claim 20
Dependent Claim
15 words
A method according to claim 12, wherein the cylindrical sections are in-phase with each other.
Claim 21
Dependent Claim
15 words
A method according to claim 12, wherein the cylindrical sections are out-of-phase with each other.
References Cited (Backward Citations)
US5674278A
Cited
US5292331A
Cited
US5344426A
Cited
US5135536A
Cited
US5514154A
Cited
US5735893A
Cited
US5603721A
Cited
US5370683A
Cited
US5569295A
Cited
US5843120A
Cited
US5636641A
Cited
US5800521A
Cited
US5591197A
Cited
US5800526A
Cited
US5851228A
Cited
US5776161A
Cited
WO1997021399A1
Cited
US5695516A
Cited
US5776183A
Cited
US5755776A
Cited
US5843175A
Cited
US5855600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-09 | 2003-02-08 | 2003-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-09 | 2007-02-08 | 2007-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-09 | 2011-02-08 | 2011-08-10 | $7700.00 | Window Closed / Lapsed |