Hydraulically actuated cardiac prosthesis with three-way ventricular valving
US4389737A · kind A · utility
24Cited by
40References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1981 |
| Grant date | Jun 28, 1983 |
| Priority date | — |
| Expiry date | Sep 15, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8243
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives hydraulic actuation fluid from an actuator pump through a three-way ventricular dump valve to compress the blood pump during systole and eject blood therefrom. During diastole the actuation fluid is permitted to drain from the actuation chamber through the three-way valve into a reservoir. The valve includes inlet and outlet manifolds and synchronously movable valve members within each manifold for controlling the flow of actuation fluid into and out of the actuation chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.