Natural tissue heart valve fixation process
US4247292A · kind A · utility
59Cited by
5References
11Claims
0Family size
Inventor
Key dates
| Filing date | Jun 6, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Jun 6, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A process for fixing a natural tissue heart valve whereby the valve has improved hydraulic performance is disclosed. The valve is first placed in glutaraldehyde with the valve cusps kept in the closed position by applying hydraulic pressure to the ventricular side of the valve. The valve is then trimmed and fitted to and sutured into a fabric covered plastic stent. An expandable tube is then placed axially within the valve and expanded to force the valve cusps into an open position. The expanded tube-valve-stent assembly is then placed in glutaraldehyde to further fix the valve and predispose the valve cusps to an open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.