Purge flow control in rotary blood pumps
US5118264A · kind A · utility
120Cited by
12References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Jan 11, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pump includes a housing an inlet and outlet communicating with a pump chamber. A rotor received in the pump chamber is rotated by a drive motor. A drive shaft extending between the motor and rotor passes through a seal which is purged from the non-blood side by fluid. The fluid side of the seal contains a pumping element to modulate the fluid pressure, thereby controlling the purge fluid flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.