EP0903123A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Axially flexible stent
Assignee: Cordis Corp
•
Filing: 1998-09-21
•
Granted: —
•
Expires: 2018-09-21
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 adjac6ent band.
Inventors
- 👤 Hikmat Hojeibane
- 👤 Larry B. Gray
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/856; 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: 20
Claim 1
Independent Claim
121 words
A stent having first and second ends with an
intermediate section therebetween, the stent further
having a longitudinal axis and providing axial
flexibility, 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; 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; and wherein the stent comprises a plurality of stent
segments, each of the stent segments containing at least
one generally continuous curvilinear strut, said stent
segments connected by at least one flexible connector
displaced between a pair of adjacent stent segments.
Claim 2
Dependent Claim
17 words
A stent according to claim 1, wherein each link
is axially displaced from any circumferentially adjacent
link.
Claim 3
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 4
Dependent Claim
31 words
A stent according to claim 3, 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 5
Dependent Claim
17 words
A stent according to claim 4, wherein each link
is axially displaced from any circumferentially adjacent
link.
Claim 6
Dependent Claim
34 words
A stent according to claim 5, 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 7
Dependent Claim
86 words
A stent according to claim 5, wherein, at each
one of a second group of common axial positions, there is
a circumferetial 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 8
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 9
Dependent Claim
27 words
A stent according to claim 8, wherein the spatial
frequency is decreased by about 20% compared with the
spatial frequency of the wave in the intermediate section.
Claim 10
Dependent Claim
50 words
A stent according to claim 8, 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 11
Dependent Claim
32 words
A stent according to claim 8, wherein widths of
corresponding sections of the bands, measured in a
circumferential direction, are greater in the first and
second regions than in the intermediate section.
Claim 12
Dependent Claim
32 words
A stent according to claim 10, wherein widths of
corresponding sections of the bands, measured in a
circumferential direction, are greater in the first and
second regions than in the intermediate section.
Claim 13
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 14
Dependent Claim
36 words
A stent according to claim 8, 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 15
Dependent Claim
50 words
A stent according to claim 9, 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 16
Dependent Claim
27 words
A stent according to claim 15, wherein widths of
corresponding sections of the bands, measured in a
circumferential direction, are greater in the first and
second end.
Claim 17
Dependent Claim
56 words
A stent according to claim 7, 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
114 words
A stent having first and second ends with an
intermediate section therebetween, the stent further
having a longitudinal axis and providing axial
flexibility, 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; 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 a plurality of links for maintaining the bands
in a tubular structure.
Claim 19
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 20
Dependent Claim
72 words
A stent having first and second ends with an
intermediate section therebetween, the stent further
having a longitudinal axis and providing axial
flexibility, 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.
References Cited (Backward Citations)
WO1997026840A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.