Method and system for pumping two liquids in equal quantities in an artificial kidney
US4857199A · kind A · utility
77Cited by
3References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Oct 20, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/929
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and a system of pumping a first and a second liquid in an artificial kidney in substantially equal quantities at a substantially constant flow. The system includes a main pump having complementary main chambers, and first and second auxiliary pumps each having complementary auxiliary chambers. The pumps are reciprocated in unison and the system further includes a unique configuration of intake and discharge lines and associated control valves which provide a constant and equal flow of first and second liquid into and out of the artificial kidney during reciprocation of the pumps in both directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.