Single needle alternating flow blood pump system
US3938909A · kind A · utility
12Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jun 24, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jun 24, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/1253
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pump system, typically employed in dialysis, includes a blood pump for withdrawing blood via a single hypodermic needle and valve means operated in synchronism therewith for returning treated blood via the same hypodermic needle. The operation of the blood pump is cyclically interrupted and the valve means opened for the alternate withdrawal and return of blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.