US5895406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axially flexible stent
Assignee: Deka Products LP
•
Filing: 1996-12-20
•
Granted: 1999-04-20
•
Expires: 2016-12-20
Abstract
Abstract A stent with axial flexibility, in a preferred embodiment, has a longitudinal axis and comprises a plurality of longitudinally disposed bands, wherein each band defines a generally continuous wave along a line segment parallel to the longitudinal axis. A plurality of links maintains the bands in a tubular structure. In a further embodiment of the invention, each longitudinally disposed band of the stent is connected, at a plurality of periodic locations, by a short circumferential link to an adjacent band.
Inventors
- 👤 Larry B. Gray
- 👤 Ann Eckert
- 👤 Todd M Chelak
- 👤 Robert M. Tumarkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:16
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/88; A61F2/885; A61F2002/91525; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
91 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis, comprising: a plurality of longitudinally disposed bands, wherein each band defines a generally continuous wave having a spatial frequency along a line segment parallel to the longitudinal axis; and a plurality of links for maintaining the bands in a tubular structure, wherein the links are so disposed that any single circumferential path formed by the links is discontinuous; such that the links and bands define an expandable structure having axial flexibility in an unexpanded configuration.
Claim 2
Dependent Claim
91 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis, comprising: a plurality of longitudinally disposed bands, wherein each band defines a generally continuous wave having a spatial frequency along a line segment parallel to the longitudinal axis; and a plurality of links for maintaining the bands in a tubular structure, wherein the links are so disposed that any single circumferential path formed by the links is discontinuous; such that the links and bands define an expandable structure having axial flexibility in an unexpanded configuration.
Claim 3
Dependent Claim
17 words
A stent according to claim 1, wherein each link is axially displaced from any circumferentially adjacent link.
Claim 4
Dependent Claim
57 words
A stent according to claim 2, wherein the spatial frequency of the wave associated with each of the bands, is decreased in a first end region lying proximate to the first end and in a second end region lying proximate to the second end, in comparison to the spatial frequency of the wave in the intermediate section.
Claim 5
Dependent Claim
27 words
A stent according to claim 3, wherein the spatial frequency is decreased by about 20% compared with the spatial frequency of the wave in the intermediate section.
Claim 6
Dependent Claim
50 words
A stent according to claim 4, wherein the first end region lies between the first end and a set of circumferential links lying closest to the first end and the second end region lies between the second end and a set of circumferential links lying closest to the second end.
Claim 7
Dependent Claim
27 words
A stent according to claim 5, wherein widths of corresponding sections of the bands, measured in a circumferential direction, are greater in the first and second end.
Claim 8
Dependent Claim
50 words
A stent according to claim 3, wherein the first end region lies between the first end and a set of circumferential links lying closest to the first end and the second end region lies between the second end and a set of circumferential links lying closest to the second end.
Claim 9
Dependent Claim
33 words
A stent according to claim 7, wherein widths of corresponding sections of the bands, measured in a circumferential direction, are greater in the first and second end regions than in the intermediate section.
Claim 10
Dependent Claim
33 words
A stent according to claim 3, wherein widths of corresponding sections of the bands, measured in a circumferential direction, are greater in the first and second end regions than in the intermediate section.
Claim 11
Dependent Claim
36 words
A stent according to claim 3, wherein each band includes a terminus at each of the first and second ends and the adjacent pairs of bands are joined at their termini to form a closed loop.
Claim 12
Dependent Claim
26 words
A stent according to claim 1, wherein the wave associated with each of the bands has approximately the same fundamental spatial frequency for the intermediate section.
Claim 13
Dependent Claim
31 words
A stent according to claim 11, wherein the bands are so disposed that the waves associated with them are spatially aligned so as to be generally in phase with one another.
Claim 14
Dependent Claim
17 words
A stent according to claim 12, wherein each link is axially displaced from any circumferentially adjacent link.
Claim 15
Dependent Claim
34 words
A stent according to claim 13, wherein, at each one of a first group of common axial positions, there is a circumferential link between each of a first set of adjacent pairs of bands.
Claim 16
Dependent Claim
86 words
A stent according to claim 13, wherein, at each one of a second group of common axial positions, there is a circumferential link between each of a second set of adjacent rows of bands, wherein, along the longitudinal axis, a common axial position occurs alternately in the first group and in the second group, and the first and second sets are selected so that a given band is linked to a neighboring band at only one of the first and second groups of common axial positions.
Claim 17
Dependent Claim
56 words
A stent according to claim 15, wherein the spatial frequency of the wave associated with each of the bands, is decreased in a first end region lying proximate to the first end and a second end region lying proximate to the second end, in comparison to the spatial frequency of the wave in the intermediate section.
Claim 18
Dependent Claim
36 words
A stent according to claim 1, wherein each band includes a terminus at each of the first and second ends and the adjacent pairs of bands are joined at their termini to form a closed loop.
Claim 19
Dependent Claim
129 words
A stent having first and second ends with an intermediate section therebetween, the stent further having a longitudinal axis, comprising: (a) a plurality of longitudinally disposed bands, wherein each band defines a generally continuous wave having a spatial frequency along a line segment parallel to the longitudinal axis; the spatial frequency of the wave associated with each of the bands being decreased in a first end region lying proximate to the first end and in a second end region lying proximate to the second end, in comparison to the spatial frequency of the wave in the intermediate section; and (b) a plurality of links for maintaining the bands in a tubular structure; such that the links and bands define an expandable structure having axial flexibility in an unexpanded configuration.
Claim 20
Dependent Claim
129 words
A stent having first and second ends with an intermediate section therebetween, the stent further having a longitudinal axis, comprising: (a) a plurality of longitudinally disposed bands, wherein each band defines a generally continuous wave having a spatial frequency along a line segment parallel to the longitudinal axis; the spatial frequency of the wave associated with each of the bands being decreased in a first end region lying proximate to the first end and in a second end region lying proximate to the second end, in comparison to the spatial frequency of the wave in the intermediate section; and (b) a plurality of links for maintaining the bands in a tubular structure; such that the links and bands define an expandable structure having axial flexibility in an unexpanded configuration.
Claim 21
Dependent Claim
32 words
A stent according to claim 18, wherein widths of sections of the bands, measured in a circumferential direction, are greater in the first and second end regions than in the intermediate section.
Claim 22
Dependent Claim
82 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis, comprising: a plurality of longitudinally disposed bands; and a plurality of links for maintaining the bands in a tubular structure, wherein each band is connected at a plurality of periodic locations by a circumferential link to an adjacent band, each link being axially displaced from any circumferentially adjacent link; such that the links and bands define an expandable structure having axial flexibility in an unexpanded configuration.
Claim 23
Dependent Claim
82 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis, comprising: a plurality of longitudinally disposed bands; and a plurality of links for maintaining the bands in a tubular structure, wherein each band is connected at a plurality of periodic locations by a circumferential link to an adjacent band, each link being axially displaced from any circumferentially adjacent link; such that the links and bands define an expandable structure having axial flexibility in an unexpanded configuration.
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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) | 2002-04-19 | 2002-10-19 | 2003-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-19 | 2006-10-19 | 2007-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-19 | 2010-10-19 | 2011-04-20 | $7700.00 | Window Closed / Lapsed |