Patent US2416069A successfully refreshed from Google Patents.
US5607463A
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Intravascular medical device
Assignee: LATHAM DANIEL W
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Filing: 1993-03-30
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Granted: 1997-03-04
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Expires: 2013-03-30
Abstract
Abstract An indwelling intravascular device having at least one tissue-contacting surface in which the tissue-contacting surface is provided with improved tissue compatibility by applying to the base material comprising the tissue-contacting surface a thin layer of a tissue-compatible metal. Metals from Group VA of the Periodic Table are preferred. The metal layer is particularly useful in vascular prosthetic devices such as vascular grafts and stents.
Inventors
- 👤 Robert S. Schwartz
- 👤 Ronald G. Tuch
- 👤 Rodney G. Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/08; A61L29/10; A61L29/106; A61L27/00; A61L27/28; A61L27/30; A61L27/306; A61L31/00; A61L31/08; A61L31/082; A61L31/088; A61F; A61F2/00; A61F2/82
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
An indwelling intravascular device for implantation in a blood vessel of a patient over an extended period of time, said intravascular device having at least one tissue-contacting surface, the tissue-contacting surface subject to contact with a wall of the blood vessel, the tissue-contacting surface comprising a base material and a thin layer of a metal from Group VB of the Periodic Table adherent to the base material.
Claim 2
Dependent Claim
67 words
An indwelling intravascular device for implantation in a blood vessel of a patient over an extended period of time, said intravascular device having at least one tissue-contacting surface, the tissue-contacting surface subject to contact with a wall of the blood vessel, the tissue-contacting surface comprising a base material and a thin layer of a metal from Group VB of the Periodic Table adherent to the base material.
Claim 3
Dependent Claim
15 words
An indwelling intravascular device according to claim 1 wherein the base material is a polymer.
Claim 4
Dependent Claim
15 words
An indwelling intravascular device according to claim 2 wherein the base polymer is an elastomer.
Claim 5
Dependent Claim
19 words
An indwelling intravascular device according to claim 1 wherein the metal layer is less than about 3000 angstroms thick.
Claim 6
Dependent Claim
21 words
An indwelling intravascular device according to claim 1 wherein the metal is selected from the group consisting of tantalum and niobium.
Claim 7
Dependent Claim
32 words
An indwelling intravascular device according to claim 1 wherein the intravascular device is selected from the group consisting of a vascular prosthesis, an artificial heart valve, an electrical lead, and a catheter.
Claim 8
Dependent Claim
67 words
A vascular prosthesis for implantation in a blood vessel of a patient over an extended period of time, said vascular prosthesis having at least one tissue-contacting surface subject to contact with a wall of the blood vessel and one blood-contacting surface, the tissue-contacting surface comprising a base material and a thin layer of a metal from Group VB of the Periodic Table adherent to the base material.
Claim 9
Dependent Claim
67 words
A vascular prosthesis for implantation in a blood vessel of a patient over an extended period of time, said vascular prosthesis having at least one tissue-contacting surface subject to contact with a wall of the blood vessel and one blood-contacting surface, the tissue-contacting surface comprising a base material and a thin layer of a metal from Group VB of the Periodic Table adherent to the base material.
Claim 10
Dependent Claim
14 words
A vascular prosthesis according to claim 7 wherein the base material is a polymer.
Claim 11
Dependent Claim
14 words
A vascular prosthesis according to claim 8 wherein the base polymer is an elastomer.
Claim 12
Dependent Claim
18 words
A vascular prosthesis according to claim 7 wherein the metal layer is less than about 3000 angstroms thick.
Claim 13
Dependent Claim
20 words
A vascular prosthesis according to claim 7 wherein the metal is selected from the group consisting of tantalum and niobium.
Claim 14
Dependent Claim
34 words
A vascular prosthesis according to claim 7 wherein the blood-contacting surface comprises a base material and a thin layer of a metal from Group VB of the Periodic Table adherent to the base material.
Claim 15
Dependent Claim
27 words
A vascular prosthesis according to claim 7 or 12 wherein the vascular prosthesis is selected from the group consisting of a vascular graft and an intravascular stent.
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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) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |