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US5531784A
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US
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Test device for and method of testing rapid assembly tissue heart valve
Assignee: PFG AUTOGENICS INVESTMENTS LLC
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Filing: 1994-03-10
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Granted: 1996-07-02
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Expires: 2014-03-10
Abstract
Abstract A tissue heart valve test device which is capable of testing the valves in a rapid manner before implantation to ensure that there are no unacceptable leaks or flaws. The test device enables the valve to be tested in the operating room during the open heart procedure. The test device is configured with a chamber which allows the user to thoroughly visually inspect the valve as part of the test criteria. In addition, the test device is provided with size-specific mounts which are adapted to the particular valve to be tested.
Inventors
- 👤 Charles S. Love
- 👤 Jack W. Love
- 👤 John H. Calvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/2415; A61F2/2472; A61F2/2496; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2220/0025; A61F2220/005; Y; Y10; Y10S; Y10S623/00; Y10S623/90; Y10S623/901; Y10S623/909; Y10S623/91; Y10S623/912; Y10S623/913; Y10S623/915; Y10S623/918; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7857; Y10T29/00; Y10T29/49; Y10T29/49405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A tester for rapidly testing a tissue heart valve comprising: a chamber made of a material which allows the user of the chamber to visually inspect the sides and top-end view of a mounted heart valve; a plurality of size-specific mounts for mounting the valve within the chamber; and means coupled to the chamber for displacing a volume of solution through the valve in a primary direction of blood flow to test both the opening and closing of the valve and to determine the amount of leakage through the valve when said valve is in a closed position, wherein said displacing means comprises a double bellows arrangement in which one side of said double bellows applies pressure across said valve in an opposite direction to the primary direction of blood flow after a volume of saline solution has been displaced through said valve.
Claim 2
Dependent Claim
143 words
A tester for rapidly testing a tissue heart valve comprising: a chamber made of a material which allows the user of the chamber to visually inspect the sides and top-end view of a mounted heart valve; a plurality of size-specific mounts for mounting the valve within the chamber; and means coupled to the chamber for displacing a volume of solution through the valve in a primary direction of blood flow to test both the opening and closing of the valve and to determine the amount of leakage through the valve when said valve is in a closed position, wherein said displacing means comprises a double bellows arrangement in which one side of said double bellows applies pressure across said valve in an opposite direction to the primary direction of blood flow after a volume of saline solution has been displaced through said 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) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |