Heart pump having contractible guide mechanism for pusher plate
US5006104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1988 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Nov 7, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/894
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pump is disclosed that is useful as ventricle assist or replacement device comprising a housing having a blood chamber and inlet and outlet ports for the ingress and egress of blood to and from the chamber. A deflectable diaphragm comprises a wall of the blood chamber which upon deflection collapses the blood chamber to urge blood from the chamber out the outlet port. A pusher plate is disposed in association with the diaphragm. The pusher plate includes a collapsible guide mechanism which guides the plate from a first fill position to a second eject position. The guide mechanism can comprise a telescopic guide or straight-line linkage which is collapsible to a first fill position to occupy a substantially lesser space in the housing than when extended to second eject position. The guide mechanism avoids the necessity of a projection from the housing to accommodate a stroke of a guide mechanism. The guide mechanism can be independent of or combined with the drive means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.