US5464438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold coating means for limiting thromboses in implantable grafts
Assignee: Individual
•
Filing: 1993-05-03
•
Granted: 1995-11-07
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Expires: 2013-05-03
Abstract
Abstract Vascular grafts, shunts, patches or valves are formed of material tolerated by the body and are lined or coated with gold to form a non-thrombogenic surface. Methods of manufacture are also disclosed.
Inventors
- 👤 Gerald J. Menaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/08; A61L31/082; A61L31/088; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L27/00; A61L27/28; A61L27/30; A61L27/306; A61L27/50; A61L27/507; A61L33/00; A61L33/02; A61L33/022; A61F2310/00; A61F2310/00389; A61F2310/00395; A61F2310/00419; A61F2310/00568; A61F2310/00928
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
In an implantable device for use as a component in the blood circulatory system of a living recipient, said device formed from a fabric of a synthetic material, said fabric characterized by interstices created by the nature of the manufacturing of the fabric, said device having a surface formed by said fabric, said surface for exposure to the blood of said recipient, the improvement comprising: a thin layer of metallic gold applied to coat said fabric forming said surface, said layer applied to leave said interstices open and unblocked.
Claim 2
Dependent Claim
89 words
In an implantable device for use as a component in the blood circulatory system of a living recipient, said device formed from a fabric of a synthetic material, said fabric characterized by interstices created by the nature of the manufacturing of the fabric, said device having a surface formed by said fabric, said surface for exposure to the blood of said recipient, the improvement comprising: a thin layer of metallic gold applied to coat said fabric forming said surface, said layer applied to leave said interstices open and unblocked.
Claim 3
Dependent Claim
41 words
The construction of claim 1 wherein said implantable device is a vascular shunt or graft comprising: a tubular body, formed from said fabric, said tubular body having an inner wall; and said layer of metallic gold applied to said inner wall.
Claim 4
Dependent Claim
39 words
The construction of claim 1 wherein said implantable device is a vascular patching device, said patching device comprising: a backing formed from said fabric; and said layer of metallic gold applied to at least one side of said backing.
Claim 5
Dependent Claim
36 words
The construction of claim 1, wherein said implantable device is an artificial heart valve assembly, said assembly including a suture cuff formed from said fabric; and said layer of metallic gold applied to said suture cuff.
Claim 6
Dependent Claim
19 words
The construction of claims 2, 3 or 4 wherein said layer of metallic gold is vapor-deposited onto said fabric.
Claim 7
Dependent Claim
19 words
The construction of claims 2, 3 or 4 wherein said layer of metallic gold is sputtered onto said fabric.
Claim 8
Dependent Claim
19 words
The construction of claims 2, 3 or 4 wherein said layer of metallic gold is vacuum-deposited onto said fabric.
Claim 9
Dependent Claim
11 words
The construction of claim 1 wherein said fabric is tetrafluoroethylene polymer.
Claim 10
Dependent Claim
12 words
The construction of claim 1 wherein said fabric is polyethylene glycol terephthalate.
Claim 11
Dependent Claim
12 words
The construction of claim 1 wherein said fabric is expanded microporous polytetrafluoroethylene.
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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) | 1998-11-06 | 1999-05-08 | 1999-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-06 | 2003-05-08 | 2003-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-06 | 2007-05-08 | 2007-11-07 | $7700.00 | Window Closed / Lapsed |