Stabilizing drive for contactless rotary blood pump impeller
US7976271B2 · kind B2 · utility
206Cited by
162References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2007 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Feb 6, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.