Artificial heart with pump control system
US5133743A · kind A · utility
3Cited by
1References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jul 31, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Jul 31, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3334
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pump and valve system having particular use as an artifical heart for human or animal implantation has long-lasting wear characteristics by imparting a relatively slow start ramp to the drive voltage for the pump drive. The ramp reduces the shock to the valves and thus reduces wear. The relatively slow ramp-down of the drive voltage also reduces wear similarly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.