US5334201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent stent made of a cross linkable material
Assignee: Bayer Medical Care Inc
•
Filing: 1993-03-12
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Granted: 1994-08-02
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Expires: 2013-03-12
Abstract
Abstract An improved vascular reinforcing stent for use in angioplasty which comprises a sleeve tubular stent of a cross-linkable substance that is completely encapsulated within a biologically compatible film and a process for using such a stent.
Inventors
- 👤 Kevin P. Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61L; A61L31/00; A61L31/04; A61L31/06; A61L31/08; A61L31/10; A61F2250/00; A61F2250/0058; A61F2250/0067
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
75 words
An endovascular stent for resisting restenosis in a stenosed region of a blood vessel that has been expanded by balloon angioplasty, said stent comprising: a stent sleeve having an expandable tubular body portion containing a cross-linkable substance at least a portion of which can be cured by exposure to radiation, and a film of material which is biologically compatible with the vessel and encapsulating such tubular body portion to thereby isolate it from the vessel.
Claim 2
Dependent Claim
75 words
An endovascular stent for resisting restenosis in a stenosed region of a blood vessel that has been expanded by balloon angioplasty, said stent comprising: a stent sleeve having an expandable tubular body portion containing a cross-linkable substance at least a portion of which can be cured by exposure to radiation, and a film of material which is biologically compatible with the vessel and encapsulating such tubular body portion to thereby isolate it from the vessel.
Claim 3
Dependent Claim
21 words
A stent as defined in claim 1 wherein said cross-linkable substance is selected from the group consisting of epoxys and urethanes.
Claim 4
Dependent Claim
16 words
A stent as defined in claim 2 wherein said cross-linkable substance is a polyurethane oligomer mixture.
Claim 5
Dependent Claim
19 words
A stent as defined in claim 3, wherein said encapsulating film of material is impregnated with an antithrombogenic agent.
Claim 6
Dependent Claim
27 words
A stent as defined in claim 2, wherein said encapsulating film is constructed of an elastic substance that remains integral during expansion of said tubular body portion.
Claim 7
Dependent Claim
24 words
A stent as defined in claim 1 wherein such tubular body portion contains a plurality of longitudinally disposed filaments composed of a noble metal.
Claim 8
Dependent Claim
17 words
A stent as defined in claim 6 wherein said elastic substance is a medical grade of silicone.
Claim 9
Dependent Claim
27 words
A stent as defined in claim 1 wherein said encapsulating film is constructed of an elastic substance that remains integral during expansion of said tubular body portion.
Claim 10
Dependent Claim
19 words
A stent as defined in claim 1 wherein said encapsulating film of material is impregnated with an antithrombogenic agent.
Claim 11
Dependent Claim
31 words
A stent as defined in claim 1 wherein said stent sleeve comprises a plurality of separate pockets that extend substantially parallel with respect to each other along said tubular body portion.
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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) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |