Patent US6245100B1 successfully refreshed from Google Patents.
US6245100B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a self-expanding stent-graft
Assignee: Cordis US Corp
•
Filing: 2000-02-01
•
Granted: 2001-06-12
•
Expires: 2020-02-01
Abstract
Abstract In accordance with the present invention, there is provided a method of making a stent-graft for insertion into target site within a vessel of a patient. The graft has a crimped state for delivery to the target site, and an expanded state for implantation therein. The method uses a self-expanding tubular elastic outer stent having a crimped and expanded state, and includes the step of expanding the outer stent to its expanded state. The method also uses a tubular flexible porous graft member and includes the step of inserting the graft member along an interior of the outer stent. The method also uses a self-expanding tubular elastic inner stent, and includes the step of crimping the outer stent to a diameter smaller than a diameter of the expanded outer stent. The method then continues by inserting the inner stent within an interior of the graft member, and expanding the inner stent such that the inner stent, the graft member and the outer stent are all abutting.
Inventors
- 👤 Luis A. Davila
- 👤 David Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/9522; A61F2/9526; A61F2/852; A61F2002/072; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0054; A61F2230/0063; A61F2230/0067; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2250/0063
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
142 words
A method of making a stent-graft for insertion into target site within a vessel of a patient, said graft having a crimped state for delivery to said target site, and an expanded state for implantation therein, said method comprising the steps of: a) providing a self-expanding tubular elastic outer stent having a crimped and expanded state, and expanding said outer stent to its expanded state; b) providing a tubular flexible porous graft member and inserting said graft member along an interior of said outer stent; and c) providing a self-expanding tubular elastic inner stent and crimping said outer stent to a diameter smaller than a diameter of said expanded outer stent, inserting said inner stent within an interior of said graft member, and expanding said inner stent such that said inner stent, said graft member and said outer stent are all abutting.
Claim 2
Independent Claim
142 words
A method of making a stent-graft for insertion into target site within a vessel of a patient, said graft having a crimped state for delivery to said target site, and an expanded state for implantation therein, said method comprising the steps of: a) providing a self-expanding tubular elastic outer stent having a crimped and expanded state, and expanding said outer stent to its expanded state; b) providing a tubular flexible porous graft member and inserting said graft member along an interior of said outer stent; and c) providing a self-expanding tubular elastic inner stent and crimping said outer stent to a diameter smaller than a diameter of said expanded outer stent, inserting said inner stent within an interior of said graft member, and expanding said inner stent such that said inner stent, said graft member and said outer stent are all abutting.
Claim 3
Dependent Claim
19 words
The method according to claim 1 further including the step of attaching said graft member to said outer stent.
Claim 4
Dependent Claim
64 words
The method according to claim 2 wherein said graft member has front and back ends which extend beyond a front and back end of said outer stent, and wherein said step of attaching said graft member to said outer stent comprises folding said front and back ends of said graft member over said front and back ends of said outer stent to form cuffs.
Claim 5
Dependent Claim
18 words
The method according to claim 3 further including the step of applying heat and pressure to said cuffs.
Claim 6
Dependent Claim
27 words
The stent graft according to claim 1 wherein said inner and outer stents are made from a nickel titanium alloy which exhibits superelastic properties at body temperature.
Claim 7
Dependent Claim
24 words
The stent-graft according to claim 2 wherein said alloy comprises from about 50.5 percent to about 60 percent Nickel and the remainder comprising Titanium.
Claim 8
Dependent Claim
20 words
The stent-graft according to claim 1 , wherein said graft member comprises expanded polytetrafluroethylene which forms nodes interconnected by fibrils.
Claim 9
Dependent Claim
23 words
The stent graft according to claim 7 , wherein the average said graft member has an average internodal distance greater than 100 microns.
Claim 10
Independent Claim
200 words
A method of making a stent-graft for insertion into target site within a vessel of a patient, said graft having a crimped state for delivery to said target site, and an expanded state for implantation therein, said method comprising the steps of; a) providing a self-expanding tubular elastic outer stent having a crimped and expanded state and front and back ends, and expanding said outer stent to its expanded state; b) providing a tubular flexible porous graft member having front and back ends, and inserting said graft member along an interior of said outer stent, wherein afterwhich a length of said graft member which is disposed along said interior of said outer stent between its front and back ends that is greater than a length of said outer stent between its front and back ends, whereby there is slack in said graft member; and c) providing a self-expanding tubular elastic inner stent and crimping said outer stent to a diameter smaller than a diameter of said expanded outer stent, inserting said inner stent within an interior of said graft member, and expanding said inner stent such that said inner stent, said graft member and said outer stent are all abutting.
Claim 11
Independent Claim
200 words
A method of making a stent-graft for insertion into target site within a vessel of a patient, said graft having a crimped state for delivery to said target site, and an expanded state for implantation therein, said method comprising the steps of; a) providing a self-expanding tubular elastic outer stent having a crimped and expanded state and front and back ends, and expanding said outer stent to its expanded state; b) providing a tubular flexible porous graft member having front and back ends, and inserting said graft member along an interior of said outer stent, wherein afterwhich a length of said graft member which is disposed along said interior of said outer stent between its front and back ends that is greater than a length of said outer stent between its front and back ends, whereby there is slack in said graft member; and c) providing a self-expanding tubular elastic inner stent and crimping said outer stent to a diameter smaller than a diameter of said expanded outer stent, inserting said inner stent within an interior of said graft member, and expanding said inner stent such that said inner stent, said graft member and said outer stent are all abutting.
Claim 12
Dependent Claim
19 words
The method according to claim 9 further including the step of attaching said graft member to said outer stent.
Claim 13
Dependent Claim
38 words
The method according to claim 10 wherein the step of attaching said graft member to said outer stent comprises the step of attaching said graft member to said outer stent at said outer stent's front and back ends.
Claim 14
Dependent Claim
42 words
The method according to claim 11 wherein said step of attaching said graft member to said outer stent comprises folding said front and back ends of said graft member over said front and back ends of said outer stent to form cuffs.
Claim 15
Dependent Claim
18 words
The method according to claim 12 further including the step of applying heat and pressure to said cuffs.
Claim 16
Dependent Claim
27 words
The stent graft according to claim 9 wherein said inner and outer stents are made from a nickel titanium alloy which exhibits superelastic properties at body temperature.
Claim 17
Dependent Claim
24 words
The stent-graft according to claim 14 wherein said alloy comprises from about 50.5 percent to about 60 percent Nickel and the remainder comprising Titanium.
Claim 18
Dependent Claim
20 words
The stent-graft according to claim 9 , wherein said graft member comprises expanded polytetrafluroethylene which forms nodes interconnected by fibrils.
Claim 19
Dependent Claim
23 words
The stent graft according to claim 16 , wherein the average said graft member has an average internodal distance greater than 100 microns.
Claim 20
Independent Claim
226 words
A method of making a stent-graft for insertion into target site within a vessel of a patient, said graft having a crimped state for delivery to said target site, and an expanded state for implantation therein, said method comprising the steps of: a) providing a self-expanding tubular elastic outer stent having a crimped and expanded state and front and back ends, and expanding said outer stent to its expanded state; b) providing a tubular flexible porous graft member having front and back ends, and inserting said graft member along an interior of said outer stent, folding said front and back ends of said graft member over and onto to said front and back ends of said outer stent to form cuffs, wherein afterwhich a length of said graft member which is disposed along said interior of said outer stent between its front and back ends that is greater than a length of said outer stent between its front and back ends, whereby there is slack in said graft member; and c) providing a self-expanding tubular elastic inner stent and crimping said outer stent to a diameter smaller than a diameter of said expanded outer stent, inserting said inner stent within an interior of said graft member, and expanding said inner stent such that said inner stent, said graft member and said outer stent are all abutting.
Claim 21
Independent Claim
226 words
A method of making a stent-graft for insertion into target site within a vessel of a patient, said graft having a crimped state for delivery to said target site, and an expanded state for implantation therein, said method comprising the steps of: a) providing a self-expanding tubular elastic outer stent having a crimped and expanded state and front and back ends, and expanding said outer stent to its expanded state; b) providing a tubular flexible porous graft member having front and back ends, and inserting said graft member along an interior of said outer stent, folding said front and back ends of said graft member over and onto to said front and back ends of said outer stent to form cuffs, wherein afterwhich a length of said graft member which is disposed along said interior of said outer stent between its front and back ends that is greater than a length of said outer stent between its front and back ends, whereby there is slack in said graft member; and c) providing a self-expanding tubular elastic inner stent and crimping said outer stent to a diameter smaller than a diameter of said expanded outer stent, inserting said inner stent within an interior of said graft member, and expanding said inner stent such that said inner stent, said graft member and said outer stent are all abutting.
Claim 22
Dependent Claim
18 words
The method according to claim 18 further including the step of applying heat and pressure to said cuffs.
Claim 23
Dependent Claim
27 words
The stent graft according to claim 18 wherein said inner and outer stents are made from a nickel titanium alloy which exhibits superelastic properties at body temperature.
Claim 24
Dependent Claim
24 words
The stent-graft according to claim 20 wherein said alloy comprises from about 50.5 percent to about 60 percent Nickel and the remainder comprising Titanium.
Claim 25
Dependent Claim
20 words
The stent-graft according to claim 18 , wherein said graft member comprises expanded polytetrafluroethylene which forms nodes interconnected by fibrils.
Claim 26
Dependent Claim
23 words
The stent graft according to claim 22 , wherein the average said graft member has an average internodal distance greater than 100 microns.
Claim 27
Dependent Claim
58 words
The stent-graft of claim 18 wherein the step of attaching said graft member to said outer stent results in said length of said graft member disposed along said interior of said outer stent between its front and back ends which is 3% to 10% greater than said length of said outer stent between its front and back ends.
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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) | 2004-06-11 | 2004-12-11 | 2005-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-06-11 | 2008-12-11 | 2009-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-06-11 | 2012-12-11 | 2013-06-12 | $7700.00 | Window Closed / Lapsed |