US4883453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing synthetic vascular grafts
Assignee: University of Liverpool
•
Filing: 1987-08-28
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Granted: 1989-11-28
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Expires: 2007-08-28
Abstract
Abstract An aorto-coronary bypass graft comprising a plate portion and at least one tube portion extending from the plate portion, the opening in the tube portion communicating with a corresponding opening in the plate portion.
Inventors
- 👤 John P. Berry
- 👤 David Annis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/064; A61B; A61B17/00; A61B17/11; A61B2017/1135; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A method of manufacturing an aotro-coronary bypass graft comprising a partially cylindrical plate portion and at least one tube portion extending from said plate portion, said method comprising the steps of forming the plate portion, forming the tube portion, placing at least one hole in the plate portion, mounting the tube portion on a rigid tube or rod of external diameter adapted to pass snugly through the hole in the plate portion, applying adhesive to the end of the tube portion to be attached to the plate portion, passing the rigid rod or tube through the hole in the plate portion until the adhesive contacts the surface of the plate portion surrounding the hole and removing the rigid rod or tube once the plate portion and tube portion are secured together.
Claim 2
Independent Claim
131 words
A method of manufacturing an aotro-coronary bypass graft comprising a partially cylindrical plate portion and at least one tube portion extending from said plate portion, said method comprising the steps of forming the plate portion, forming the tube portion, placing at least one hole in the plate portion, mounting the tube portion on a rigid tube or rod of external diameter adapted to pass snugly through the hole in the plate portion, applying adhesive to the end of the tube portion to be attached to the plate portion, passing the rigid rod or tube through the hole in the plate portion until the adhesive contacts the surface of the plate portion surrounding the hole and removing the rigid rod or tube once the plate portion and tube portion are secured together.
Claim 3
Dependent Claim
88 words
A method as claimed in claim 1 wherein the application of adhesive to the end of the tubular portion is carried out by applying a film of adhesive to a planar surface of a rigid element having a hole formed therethrough of internal dimensions the same as the hole in the plate portion, passing the rigid rod or tube through the hole in there rigid element until the tube portion contacts and collects adhesive, and removing the rigid rod or tube together with the tube portion mounted thereon.
Claim 4
Dependent Claim
49 words
A method as claimed in claim 1 wherein during the step of passing the rigid rod or tube through the plate portion, the plate portion is supported on a base having a hole formed therein of internal dimensions the same as the hole or holes in the plate portion.
Claim 5
Dependent Claim
17 words
A method as claimed in claim 3 wherein the base and the rigid element are the same.
References Cited (Backward Citations)
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Cited
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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) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |