Hydraulically actuated total cardiac prosthesis with reversible pump and three-way ventricular valving
US4381567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1981 |
| Grant date | May 3, 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 total cardiac prosthesis having a pair of hydraulically actuated compressible blood pumps. An actuation chamber adjacent each blood pump receives hydraulic actuation fluid from a separate actuator pump to compress the blood pump during systole and eject blood therefrom. During diastole the actuation fluid is permitted to drain from the actuation chamber into a reservoir. One of the actuator pumps delivers actuation fluid to its associated actuation chamber through a three-way ventricular dump valve, which directs fluid directly to the reservoir during diastole. The other actuator pump is a reversible pump which repeatedly reverses its pumping direction to effect systole and diastole in its associated blood pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.