Implantable electric axial-flow blood pump with blood-cooled bearing
US5951263A · kind A · utility
187Cited by
11References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Nov 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An axial-flow blood pump has a rotor suspended in ball-and-cup bearings which are blood-cooled but not actively blood-lubricated. The ball-and-cup structures are made of highly heat-conductive material and are in heat-transferring contact with heat-conductive stator blades that serve as heat sinks for the bearings. The ball-and-cup structures are radially much smaller than the stator blades. The ball-to-cup interface has so small a gap that the ball-to-cup structures present an essentially continuous surface to the blood flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.