Hydrodynamically suspended rotor axial flow blood pump
US5112200A · kind A · utility
233Cited by
14References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | May 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A brushless DC motor has a rotor with impeller blades mounted thereon to pump blood through the central portion of the motor. Over a portion of its length, the rotor has a cylindrical surface that is spaced from a cooperating cylindrical surface on the motor stator. There is a gap between these cylindrical surfaces through which there is a leakage flow of blood. The relative motion between the cylindrical surfaces provides a hydrodynamic bearing that suspends the rotor in the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.