EP0893108A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Kink-resistant stent-graft
Assignee: Gore Enterprise Holdings Inc
•
Filing: 1998-07-16
•
Granted: —
•
Expires: 2018-07-16
Abstract
Abstract A stent-graft including a stent member having an inner surface and an outer surface, a generally tubular graft member and a coupling member in the form of a ribbon which covers only a portion of the inner or outer surface of the stent member and secures the stent member and graft member to one another. Alternatively, the coupling member can be described as interconnecting less than entirely the inner or outer surface of the graft member to the stent member. With this construction, regions of the stent member do not interfere with the coupling member. Shear stresses between the stent member and the coupling member and the risk of tearing the graft or coupling member or delamination therebetween may be reduced as compared to a fully enveloped stent member. This construction also provides improved flexibility and kink resistance.
Inventors
- 👤 Gerald Ray Martin
- 👤 Lilip Lau
- 👤 Scott N. Stonebrook
- 👤 Sharon Lam
- 👤 Troy Thornton
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/844; A61F2/86; A61F2/88; A61F2/95; A61F2/89; A61F2/90; A61F2002/075; A61F2002/9505; A61F2002/9511; A61F2/962; A61F2/966; A61F2002/9665; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2220/0091; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0041; A61F2230/006; A61F2230/0063; A61F2230/0073; A61F2230/0078; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
59 words
A stent-graft comprising: a stent member having an inner surface and
an outer surface; a generally tubular graft member; and a ribbon adherred in contact with at least
one of the inner and outer surfaces of said stent member
and forming multiple strips spaced from one another, the
ribbon securing the stent member and graft member to one
another.
Claim 2
Dependent Claim
13 words
The stent-graft of claim 1 wherein said
stent member comprises a tubular member.
Claim 3
Dependent Claim
13 words
The stent-graft of claim 2 wherein said
stent member comprises multiple tubular members.
Claim 4
Dependent Claim
25 words
The stent-graft of claim 1 wherein said
stent member comprises a first member having undulations
and being arranged in a helical configuration with
multiple turns.
Claim 5
Dependent Claim
32 words
The stent-graft of claim 4 wherein said
ribbon is arranged in a helical configuration with
multiple turns, each turn being spaced from an adjacent
turn and forming one of said multiple strips.
Claim 6
Dependent Claim
13 words
The stent-graft of claim 5 wherein said
spacing between said turns is uniform.
Claim 7
Dependent Claim
14 words
The stent-graft of claim 5 wherein said
ribbon covers a portion of said undulations.
Claim 8
Dependent Claim
17 words
The stent-graft of claim 5 wherein said
ribbon is interwoven into at least one of said
undulations.
Claim 9
Dependent Claim
25 words
The stent-graft of claim 5 further
including a linking member threaded between adjacent turns
to maintain undulations in adjacent turns generally in-phase
with one another.
Claim 10
Dependent Claim
24 words
The stent-graft of claim 9 wherein a number
of said undulations are configured to permit therein
unrestrained movement of an undulation generally in-phase
therewith.
Claim 11
Dependent Claim
15 words
The stent-graft of claim 5 wherein a group
of said undulations forms a sinusoidal curve.
Claim 12
Dependent Claim
28 words
The stent-graft of claim 5 wherein said
ribbon has a width less than or equal to about two-thirds
the average amplitude, measured peak-to-peak, of one of
said undulations.
Claim 13
Dependent Claim
28 words
The stent-graft of claim 12 wherein said
ribbon has a width less than or equal to about three-fourths
the average amplitude, measured peak-to-peak, of
one of said undulations.
Claim 14
Dependent Claim
22 words
The stent-graft of claim 1 wherein said
graft member has an average thickness of less than or
equal to about 0.006 inch.
Claim 15
Dependent Claim
21 words
The stent-graft of claim 14 wherein said
ribbon has an average thickness of less than or equal to
about 0.005 inch.
Claim 16
Dependent Claim
12 words
The stent-graft of claim 1 wherein said
graft member comprises a fluoropolymer.
Claim 17
Dependent Claim
12 words
The stent-graft of claim 16 wherein said
fluoropolymer comprises porous expanded
polytetrafluorethylene.
Claim 18
Dependent Claim
12 words
The stent-graft of claim 1 wherein said
graft member contains radiopaque fibers.
Claim 19
Dependent Claim
13 words
The stent-graft of claim 1 wherein said
stent member comprises a nickel-titanium alloy.
Claim 20
Dependent Claim
15 words
The stent-graft of claim 1 wherein said
ribbon is adhesively bonded to said graft member.
Claim 21
Dependent Claim
18 words
The stent-graft of claim 1 wherein said
ribbon has a generally flat portion that faces said graft
member.
Claim 22
Dependent Claim
63 words
A stent-graft comprising: a stent member having an inner surface and
an outer surface; a generally tubular graft member having an
inner and an outer surface, one of said stent and graft
members surrounding at least a portion of the other; and a ribbon interconnecting less than entirely
one of said inner and outer surfaces of said graft member
to said stent member.
Claim 23
Dependent Claim
28 words
The stent-graft of claim 22 wherein said
ribbon is arranged to include multiple helical turns, at
least one of said turns being spaced from a turn adjacent
thereto.
Claim 24
Dependent Claim
18 words
The stent-graft of claim 22 wherein said
ribbon has a generally flat portion that faces said graft
member.
Claim 25
Dependent Claim
29 words
The stent-graft of claim 22 wherein said
stent member is tubular, said stent and graft member are
generally coaxial, and said graft member is disposed in
said stent member.
Claim 26
Dependent Claim
96 words
A stent-graft comprising: a stent member having an inner surface and
an outer surface, said stent member including a first
member and a second member, said first member being
arranged in a helical configuration with multiple helical
turns, said second member coupling adjacent helical turns; a generally tubular graft member having an
inner surface and an outer surface, one of said stent and
graft members surrounding at least a portion of the other,
and a coupling member coupling less than
entirely one of said inner and outer surfaces of said
graft member to said stent member.
Claim 27
Dependent Claim
47 words
The stent-graft of claim 26 wherein said
first member includes multiple undulations, each having an
apex, said coupling member is helically arranged and
spaced from said apexes to form therewith respective
openings, said apexes being configured to permit
unrestrained movement of said second member within said
openings.
Claim 28
Dependent Claim
88 words
A stent-graft comprising: a generally tubular stent member having
inner and outer circumferences, said stent member
including a first member being arranged in a helical
configuration with multiple helical turns and having
multiple undulations, each undulation having an apex, a flat ribbon helically arranged and
disposed to contact at least one of said inner and outer
circumferences of said stent member and forming multiple
windings spaced from one another; and a generally tubular graft member disposed
within said stent member portions of which are secured to
said ribbon.
Claim 29
Dependent Claim
36 words
The stent-graft of claim 28 wherein said
helically wound ribbon is generally spaced from said
apexes and forms therewith respective openings, said
apexes being configured to permit unrestrained movement of
said second member within said openings.
Claim 30
Independent Claim
91 words
A method of deploying a stent-graft
comprising the steps of: placing a first end of a variable length
stent-graft having an inner graft member, an outer,
helically wound stent coupled to said graft member by a
helically wound ribbon with spaced apart turns, at a first
site in a mammal; moving the second end of the stent-graft
toward a second site in a mammal; lengthening the stent-graft
if the second end does not reach the second site;
and shortening of the stent-graft if the second
end extends beyond the second site.
Claim 31
Dependent Claim
47 words
A process for making a stent graft
comprising: (a) placing a graft around a mandrel; (b) positioning a stent having undulations
around said graft; and (c) covering a portion of said stent and
graft with a coupling member having a flat surface, to
form a stent-graft assembly.
Claim 32
Dependent Claim
23 words
The process according to claim 31 further
comprising the step of: (a1) prior to step (a), placing a
cushioning layer around the mandrel.
Claim 33
Dependent Claim
33 words
The process according to claim 31, wherein
said covering step comprises helically wrapping the
coupling member around the stent whereby adjacent turns of
the helically wrapper coupling member are spaced from one
another.
Claim 34
Dependent Claim
33 words
The process according to claim 32, wherein
said covering step comprises helically wrapping the
coupling member around the stent whereby adjacent turns of
the helically wrapper coupling member are spaced from one
another.
Claim 35
Dependent Claim
19 words
The process according to claim 32 wherein
the coupling member is bonded to an outer surface of the
graft.
Claim 36
Dependent Claim
26 words
The process according to claim 31 further
comprising the step of: (d) placing a sheath around the assembly
of step (c) to form a compressed assembly.
Claim 37
Dependent Claim
27 words
The process according to claim 35 further
comprising the step of: (e) heating the tensioned assembly of step
(d) to bond the coupling member to the graft.
Claim 38
Dependent Claim
36 words
The process according to claim 34
further comprising: (d) placing a tubular sheath having a
longitudinal slit around the assembly of step (c); and (e) helically wrapping a film around the
sheath to compress the assembly.
Claim 39
Dependent Claim
16 words
The processing according to claim 36
wherein the sheath includes a helical wrapping of PTFE
film.
Claim 40
Dependent Claim
20 words
The stent-graft of claim 16 wherein one
side of said ribbon has a coating of a fluorinated
ethylene propylene polymer.
Claim 41
Independent Claim
74 words
An device compromising; a generally tubular support member having inner
and outer circumferences, said support member having
multiple undulations, each having an amplitude; a generally tubular graft member disposed within
said support member; and a fluoropolymer tape helically arranged to
contact at least one of said inner and outer
circumferences of said support member and forming multiple
windings spaced from one another, each winding covering
only a portion of the amplitude of the undulations.
Claim 42
Dependent Claim
74 words
A stent-grafted comprising; a generally tubular stent member having inner
and outer circumferences, said stent member having
multiple undulations, each having an amplitude; a generally tubular graft member disposed within
said stent member; and a fluoropolymer tape helically arranged to
contact at least one of said inner and outer
circumferences of said stent member and forming multiple
windings spaced from one another, each winding covering
only a portion of the amplitude of the undulations.
Claim 43
Independent Claim
50 words
A device compromising; a stent member having multiple undulations, each
having an amplitude; a generally tubular graft member at least
disposed within said stent member; and a helically arranged tape to forming multiple
spaced windings from one another, each winding covering
only a portion of the amplitude of the undulations.
References Cited (Backward Citations)
No citation records indexed.
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