Ceramic pivot bearing arrangement for a sealless blood pump
US5713730A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 2, 1995 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | May 2, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2203/0817
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A centrifugal blood pump, used for heart-lung machines or the like, having at least one impeller, a casing having an inlet and an outlet, the casing formed to have a space for rotatably housing the at least one impeller and a magnetic drive disposed outside the casing. The impeller may have vanes attached thereto for forcing fluid through the casing. Further the vanes may have magnets imbedded therein. The magnetic drive and the imbedded magnets cooperate to rotate the impeller. The impeller may have pivots integrated at opposing ends for allowing the impeller to rotate about a horizontal axis. The pivots may be supported by pivot bearings disposed within the casing. The pivots and the pivot bearings may be made of a ceramic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.