Rotodynamic pump with non-circular hydrodynamic bearing journal
US5890883A · kind A · utility
92Cited by
13References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Mar 19, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/148
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pump incorporates a blood lubricated journal bearing that is characterized by a non-circular geometry. In one embodiment, the stationary bearing element, or stator, of the bearing is provided with a semi-elliptical shaped outer surface in an area opposite the load bearing film. The journal bearing configuration ensures that the blood flow therethrough is adequate, that the integrity of the blood is preserved and that bearing stability is maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.