US4083066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterologous arterial transplants
Assignee: ICN Switzerland AG
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Filing: 1975-11-07
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Granted: 1978-04-11
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Expires: 1995-11-07
Abstract
Abstract In a process for the preparation of heterologous arterial transplants comprising freeing young animal arteries of surrounding tissue, ligating collateral branches, subjecting the resulting arteries to proteolysis to remove elastic fibers and muscle tissue to obtain collagen tubes and tanning the latter tubes to effect cross-linking, the improvement comprising effecting the proteoylsis and tanning steps in a continuous flow manner.
Inventors
- 👤 Heribert Schmitz
- 👤 Walter Stocklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:27
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/3604; A61L27/3625; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/062; A61L27/50; A61L27/507; A61L2430/00; A61L2430/40; Y; Y10; Y10S; Y10S623/00; Y10S623/915; Y10S623/916; Y10S623/917
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A process for the preparation of heterologous arterial transplants comprising freeing animal arteries of surrounding tissue, ligating collateral branches, subjecting the resulting arteries to proteolysis to remove elastic fiber and muscle tissue to obtain collagen tubes and tanning said tubes to effect cross-linking, the said proteolysis and tanning steps being effected by proteolytic and tanning solutions which continuously flow in one direction both through said arteries and along the outer surface of said arteries.
Claim 2
Dependent Claim
74 words
A process for the preparation of heterologous arterial transplants comprising freeing animal arteries of surrounding tissue, ligating collateral branches, subjecting the resulting arteries to proteolysis to remove elastic fiber and muscle tissue to obtain collagen tubes and tanning said tubes to effect cross-linking, the said proteolysis and tanning steps being effected by proteolytic and tanning solutions which continuously flow in one direction both through said arteries and along the outer surface of said arteries.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the arteries are from young animals.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein the arteries are from newborn animals.
Claim 5
Independent Claim
15 words
The method of claims 1 wherein the arteries are a plurality of arteries connected together.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein the arteries are calf arteries.
Claim 7
Dependent Claim
10 words
The arterial transplants produced by the process of claim 1.
References Cited (Backward Citations)
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US1724954A
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US2900644A
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US3093439A
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US3966401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |