Centrifugal rotary blood pump with impeller having a hydrodynamic thrust bearing surface
US8152493B2 · kind B2 · utility
107Cited by
25References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Nov 29, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rotary blood pump may include one or more motor stators overlying exterior surfaces of a wall defining a pumping chamber. A rotatable impeller within the pumping chamber may have a hydrodynamic thrust bearing surface adapted to constrain a position of the impeller along an axis of rotation relative to the wall when the impeller is rotating about the axis of rotation. The impeller position may then be constrained without requiring a constant polarity magnetic force to be applied in the axial direction from a fixed position of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.