Cardiac valve with flaps pivoting on balls
US5171263A · kind A · utility
18Cited by
6References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 12, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Dec 12, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7898
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cardiac valve comprises a ring, one or more flaps, the pivoting axis of the latter including two balls partly extending into a ring cavity and a conical flap cavity. This arrangement improves the life of the valve by reducing wear, stresses, friction and facilitates the assembly thereof if the ring is constituted by two concentric members and if the ring cavity extends on either side of the inner member. The invention more particularly applies to artificial valves installed in the heart in place of defective natural valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.