Method for preparing tissue heart valve
US4350492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1981 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Aug 24, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L27/507
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for preparing an aortic heart valve for implantation wherein the area of the septal shelf of the right coronary cusp extending into the valve orifice is substantially reduced. The excised value is prepared for fixation by pressurizing the valve to close the valve cusps, and thereafter inverting the aortic vestibule tissue over a valve stent or other cylindrical form circumscribing the valve. As the vestibule tissue is inverted, the septal shelf muscle is pulled toward the outside wall of the valve. When the septal shelf has been displaced to the maximum extent possible while maintaining coaption of the valve leaflets, the valve is fixed with a tanning solution. The resulting valve, after being trimmed and mounted for implantation, has improved flow characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.