Patent US7189259B2 successfully refreshed from Google Patents.
US7189259B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tissue material and process for bioprosthesis
Assignee: Clemson University Research Foundation
•
Filing: 2003-11-24
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Granted: 2007-03-13
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Expires: 2023-11-24
Abstract
Abstract A biomaterial useful for bioprostheses such as bioprosthetic heart valves is provided in which the fixed tissue has improved elastic properties. The high elastin-containing biomaterial is further characterized by having anisotropic properties wherein the biological material has a greater stiffness in one direction and a greater elasticity in a cross direction. For instance, the biological material has an elastin content of about 30% by weight. In one embodiment, the biological material is vena cava tissue.
Inventors
- 👤 Dan T. Simionescu
- 👤 Narendra Vyavahare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:27
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; Y; Y10; Y10S; Y10S623/00; Y10S623/909
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A bioprosthetic heart valve comprising: a fixed tissue having an elastin content of at least about 10% by weight of the tissue, wherein the tissue is vena cava tissue; and a support structure selected from the group consisting of a suture ring and a stent to support the tissue of said bioprosthetic heart valve.
Claim 2
Dependent Claim
54 words
A bioprosthetic heart valve comprising: a fixed tissue having an elastin content of at least about 10% by weight of the tissue, wherein the tissue is vena cava tissue; and a support structure selected from the group consisting of a suture ring and a stent to support the tissue of said bioprosthetic heart valve.
Claim 3
Dependent Claim
25 words
The bioprosthetic heart valve of claim 1 , wherein the tissue has an elastin content of at least about 30% by weight of the tissue.
Claim 4
Dependent Claim
16 words
The bioprosthetic heart valve of claim 1 , wherein the tissue is porcine vena cava tissue.
Claim 5
Dependent Claim
18 words
The bioprosthetic heart valve of claim 1 , wherein the bioprosthetic heart valve is a tricuspid heart valve.
Claim 6
Dependent Claim
18 words
The bioprosthetic heart valve of claim 1 , wherein the bioprosthetic heart valve is a bicuspid heart valve.
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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) | 2010-03-12 | 2010-09-11 | 2011-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-03-12 | 2014-09-11 | 2015-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-03-12 | 2018-09-11 | 2019-03-13 | $7700.00 | Window Closed / Lapsed |