US5510077A
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US
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Method of making an intraluminal stent
Assignee: Medtronic Inc
•
Filing: 1994-09-15
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Granted: 1996-04-23
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Expires: 2014-09-15
Abstract
Abstract An intraluminal stent comprising fibrin treatment of restenosis is provided by a two stage molding process.
Inventors
- 👤 Thomas Q. Dinh
- 👤 Ronald J. Tuch
- 👤 Michael Dror
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61L; A61L31/00; A61L31/04; A61L31/041; A61L31/043; A61L31/046; A61L31/047; A61L31/08; A61L31/10; A61L31/12; A61L31/125; A61L31/128; A61L31/14; A61L31/16; A61F2/0077; A61F2240/00; A61F2240/001; A61F2250/00; A61F2250/0058; A61F2250/0067; A61L2300/00; A61L2300/20; A61L2300/252; A61L2300/40; A61L2300/416
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
60 words
A method for making an intraluminal stem comprising the steps of: (a) polymerizing fibrinogen into a fibrin stent preform in a first mold cavity; (b) placing the fibrin stent preform into a second mold cavity having a molding surface; and (c) compressing the fibrin stent preform against the molding surface of the second mold cavity to form the intraluminal stent.
Claim 2
Independent Claim
60 words
A method for making an intraluminal stem comprising the steps of: (a) polymerizing fibrinogen into a fibrin stent preform in a first mold cavity; (b) placing the fibrin stent preform into a second mold cavity having a molding surface; and (c) compressing the fibrin stent preform against the molding surface of the second mold cavity to form the intraluminal stent.
Claim 3
Dependent Claim
27 words
The method of claim 1 wherein the polymerizing step comprises placing a mixture of fibrinogen and a fibrinogen-coagulating protein into the mold cavity and curing the mixture.
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein the curing step comprises the application of water to the stent preform as it cures.
Claim 5
Dependent Claim
16 words
The method of claim 1 further comprising applying a buffer solution to the fibrin stent preform.
Claim 6
Dependent Claim
13 words
The method of claim 4 wherein the buffer solution includes a crosslinking agent.
Claim 7
Dependent Claim
14 words
The method of claim 1 further comprising applying heparin to the fibrin stent preform.
Claim 8
Dependent Claim
19 words
The method of claim 1 wherein the compressing step also includes an outward expansion of the fibrin stent preform.
Claim 9
Independent Claim
75 words
A method for making an intraluminal stent comprising the steps of: (a) polymerizing fibrinogen into a fibrin stent preform in a first mold cavity; (b) placing a balloon into the fibrin stent preform; (c) placing the balloon and fibrin stent preform into a second mold cavity having a molding surface; and (c) compressing the fibrin stent preform against the molding surface of the second mold cavity by expanding the balloon to form the intraluminal stent.
Claim 10
Independent Claim
75 words
A method for making an intraluminal stent comprising the steps of: (a) polymerizing fibrinogen into a fibrin stent preform in a first mold cavity; (b) placing a balloon into the fibrin stent preform; (c) placing the balloon and fibrin stent preform into a second mold cavity having a molding surface; and (c) compressing the fibrin stent preform against the molding surface of the second mold cavity by expanding the balloon to form the intraluminal stent.
Claim 11
Dependent Claim
27 words
The method of claim 8 wherein the polymerizing step comprises placing a mixture of fibrinogen and a fibrinogen-coagulating protein into the mold cavity and curing the mixture.
Claim 12
Dependent Claim
21 words
The method of claim 9 wherein the curing step comprises the application of water to the stent preform as it cures.
Claim 13
Dependent Claim
16 words
The method of claim 8 further comprising applying a buffer solution to the fibrin stent preform.
Claim 14
Dependent Claim
13 words
The method of claim 11 wherein the buffer solution includes a crosslinking agent.
Claim 15
Dependent Claim
14 words
The method of claim 8 further comprising applying heparin to the fibrin stent preform.
Claim 16
Dependent Claim
21 words
The method of claim 8 wherein the compressing step also includes an outward expansion of the balloon and fibrin stent preform.
Claim 17
Independent Claim
95 words
A method for making an intraluminal stem comprising the steps of: (a) placing a stent framework into a first mold cavity; (b) injecting fibrinogen and a fibrinogen-coagulating protein into the first mold cavity around the stem framework and allowing the fibrinogen to cure in the mold cavity, thereby producing a fibrin stent preform comprising fibrin and the stent framework; (c) placing the fibrin stent preform into a second mold cavity having a molding surface; and (d) compressing the fibrin stent preform against the molding surface of the second mold cavity to form the intraluminal stent.
Claim 18
Independent Claim
95 words
A method for making an intraluminal stem comprising the steps of: (a) placing a stent framework into a first mold cavity; (b) injecting fibrinogen and a fibrinogen-coagulating protein into the first mold cavity around the stem framework and allowing the fibrinogen to cure in the mold cavity, thereby producing a fibrin stent preform comprising fibrin and the stent framework; (c) placing the fibrin stent preform into a second mold cavity having a molding surface; and (d) compressing the fibrin stent preform against the molding surface of the second mold cavity to form the intraluminal stent.
Claim 19
Dependent Claim
21 words
The method of claim 15 wherein the curing step comprises the application of water to the stent preform as it cures.
Claim 20
Dependent Claim
16 words
The method of claim 15 further comprising applying a buffer solution to the fibrin stent preform.
Claim 21
Dependent Claim
13 words
The method of claim 17 wherein the buffer solution includes a crosslinking agent.
Claim 22
Dependent Claim
14 words
The method of claim 15 further comprising applying heparin to the fibrin stent preform.
Claim 23
Dependent Claim
19 words
The method of claim 15 wherein the compressing step also includes an outward expansion of the fibrin stent preform.
Claim 24
Dependent Claim
19 words
The method of claim 15 also comprising the step of mounting the compressed preform onto a balloon catheter balloon.
Claim 25
Dependent Claim
20 words
The method of claim 15 also comprising the step of applying a sterilizing dose of radiation to the compressed preform.
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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) | 1999-04-23 | 1999-10-23 | 2000-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-23 | 2003-10-23 | 2004-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-23 | 2007-10-23 | 2008-04-23 | $7700.00 | Window Closed / Lapsed |