Zero net external displacement implantable pump and driver
US5073094A · kind A · utility
30Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1987 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Nov 17, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0401
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A zero net external displacement implantable pump for the transfer of accumulated body fluids, such as transfer of ascites fluid from the peritoneum to the vasculative system. The pump includes a pair of bellows type displacement chambers which are alternately compressed and expanded by action of a pivoted rocker member. The fluid to be transferred is drawn into the chambers on the expansion strokes and expelled on the compression strokes. The rocker member may be operated manually or power driven. Single action and double action pumps are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.