US5584878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test device for and method of testing rapid tissue heart valve
Assignee: PFG AUTOGENICS INVESTMENTS LLC
•
Filing: 1995-06-06
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Granted: 1996-12-17
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Expires: 2015-06-06
Abstract
Abstract A concentric mating stent tissue heart valve which is capable of being assembled with a variety of tissue sources is provided. A tester for rapidly testing a tissue heart valve is provided comprising a substantially transparent viewing chamber having a plurality of size-specific mounts for mounting the valve within the chamber. The tester further comprises an element for displacing a volume of solution through the valve to test the opening and closing of the valve and to determine the amount of leakage through the valve when the valve is in a closed position.
Inventors
- 👤 Charles S. Love
- 👤 Jack W. Love
- 👤 John H. Calvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:56
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: 4
Claim 1
Independent Claim
131 words
A tester for rapidly testing a tissue heart valve comprising: a chamber substantially made of a transparent 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; 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 condition; and a calibrated float coupled to said chamber calibrated to be in a safe zone when said valve is in a closed position and there is substantially no leakage through said valve.
Claim 2
Dependent Claim
131 words
A tester for rapidly testing a tissue heart valve comprising: a chamber substantially made of a transparent 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; 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 condition; and a calibrated float coupled to said chamber calibrated to be in a safe zone when said valve is in a closed position and there is substantially no leakage through said valve.
Claim 3
Independent Claim
169 words
A method of rapidly testing a tissue heart valve, comprising the following steps: providing a valve testing device having a clear viewing chamber for permitting side visualization of a valve positioned therein and a plurality of size-specific mounts for mounting the valve within the chamber; positioning a valve in the chamber so that the positioned valve can be visualized through said clear viewing chamber; displacing a volume of a 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 condition; visually inspecting at least one end and the side of the valve for leakage through the valve after the solution has been displaced through the valve; and viewing a calibrated float coupled to said chamber which is calibrated to be in a safe zone when there is substantially no leakage through said valve when said valve is in a closed position.
Claim 4
Independent Claim
169 words
A method of rapidly testing a tissue heart valve, comprising the following steps: providing a valve testing device having a clear viewing chamber for permitting side visualization of a valve positioned therein and a plurality of size-specific mounts for mounting the valve within the chamber; positioning a valve in the chamber so that the positioned valve can be visualized through said clear viewing chamber; displacing a volume of a 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 condition; visually inspecting at least one end and the side of the valve for leakage through the valve after the solution has been displaced through the valve; and viewing a calibrated float coupled to said chamber which is calibrated to be in a safe zone when there is substantially no leakage through said valve when said valve is in a closed position.
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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) | 1999-12-17 | 2000-06-17 | 2000-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-17 | 2004-06-17 | 2004-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-17 | 2008-06-17 | 2008-12-17 | $7700.00 | Window Closed / Lapsed |