EP0824903A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A profiled stent and method of manufacture
Assignee: Medtronic Vascular Inc
•
Filing: 1997-08-15
•
Granted: —
•
Expires: 2017-08-15
Abstract
Abstract The disclosure relates to a profiled stent (20) for supporting and maintaining the patency of lumens in living tissue. The profiled stent includes a plurality of support members, each of the support members having a first side (24a), a second side (26a) positioned opposite the first side, a third side (20a) adjoining the first and second sides, a fourth side (22a) positioned opposite the third side adjoining the first and second sides. Four corners are defined by the adjoining first, second, third, and fourth sides. At least one of the support members of the stent is profiled such that the four corners of that support member are round, while the first and second sides are substantially flat or, stated differently, exhibit substantially similar radii of curvature.
Inventors
- 👤 Matthew J. Birdsall
- 👤 Robert D. Lashinski
- 👤 Randall T. Lashinski
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2230/00; A61F2230/0002
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
45 words
A profiled stent for helping to hold open a lumen in living tissue comprising:
at least one support member having at least a first side, a second side, and a third
side, and three rounded edges defined where the first second and third sides meet.
Claim 2
Dependent Claim
88 words
The stent according to claim 1 further including a fourth side, wherein the second
side is positioned opposite the first side, the third side adjoins the first and second
sides, and the fourth side is positioned opposite the third side and adjoins the first
and second sides, the profiled stent further including four corners defined where
the first, second, third, and fourth sides adjoin, wherein the support member is
profiled such that each of the four corners are round, while the first and second
sides are substantially flat.
Claim 3
Dependent Claim
16 words
The stent according to claim 2 wherein the profiled stent includes a plurality of
supporting members.
Claim 4
Dependent Claim
14 words
The stent according to claim 3 wherein all of the supporting members are
profiled.
Claim 5
Dependent Claim
18 words
The stent according to claim 2 wherein the first and second sides are flattened by
a swaging process.
Claim 6
Dependent Claim
41 words
The stent according to claim 2 further comprising: the stent having a plurality of stent sections; each of said plurality of stent sections having at least one support member;
and at least one of said plurality of stent sections being profiled.
Claim 7
Dependent Claim
105 words
A profiled stent for helping to hold open a lumen comprising: at least one stent section; said at least one stent section including at least one supporting member having a
first side, a second side positioned opposite the first side, a third side adjoining the first
and second sides, a fourth side positioned opposite the third side adjoining the first and
second sides, and four corners defined by the first, second, third, and fourth sides, wherein the four corners of the at least one support member are round, and the
first and second sides are profiled such as to exhibit substantially similar radii of
curvature.
Claim 8
Dependent Claim
18 words
The stent according to claim 7 wherein said first and second sides are profiled to
be substantially flat.
Claim 9
Dependent Claim
15 words
The stent according to claim 7 wherein said at least one support member is
profiled.
Claim 10
Dependent Claim
43 words
The stent according to claim 7 wherein said at least one stent section further
comprises: a plurality of support members; and all said support members are profiled such
that the surfaces of the first and second sides exhibit substantially similar radii of
curvature.
Claim 11
Dependent Claim
36 words
The stent according to claim 7 further comprising: a plurality of stent sections; each of said plurality of stent sections having at least
one support member; and at least one of said stent sections is profiled.
Claim 12
Independent Claim
31 words
A method for producing a stent to be placed in a lumen in living tissue comprising
the steps of: manufacturing the stent; and profiling the stent to create a profiled stent;
Claim 13
Dependent Claim
100 words
The method according to claim 12 wherein the lumen has an inner wall and the
manufactured stent comprises at least one stent section including at least one
supporting member having an outer wall and an inner surface radially opposing the outer
surface, further including the step of: profiling the manufactured stent such that the at least one support member
of the profiled stent has a cross-section that is flatter than the cross-section
of the at least one wupport member of the manufactured stent; and
wherein the outer and inner surfaces are profiled to also exhibit
substantially similar radii of curvature.
Claim 14
Dependent Claim
16 words
The method according to claim 12 further including the step of: thermally processing the profiled stent.
Claim 15
Dependent Claim
14 words
The stent according to claim 14 wherein the stent is thermally processed by
annealing.
Claim 16
Dependent Claim
15 words
The method according to claim 12 further including the step of: electro-polishing the profiled stent.
Claim 17
Dependent Claim
18 words
The method according to claim 12 further including the step of: profiling the stent using a swage machine.
Claim 18
Dependent Claim
35 words
The method according to claim 17 wherein the swage machine includes a mandrel
and a die and further includes the steps of: loading said stent onto the mandrel; and drawing said mandrel through the die.
Claim 19
Dependent Claim
32 words
The method according to claim 12 further including the steps of: placing the manufacturing stent into a sleeve; and advancing a forming tool through said stent in order to profile said stent.
References Cited (Backward Citations)
US4041766A
Cited
EP0417928A1
Cited
US5292331A
Cited
US5403341A
Cited
WO1996009020A1
Cited
WO1996012450A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.