Multiple rotor, wide blade, axial flow pump
US7972122B2 · kind B2 · utility
76Cited by
100References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2005 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Feb 25, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/148
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pump comprises a pump housing; a plurality of rotors positioned in said housing, each rotor comprising an impeller having a hydrodynamic surface for pumping blood; and a motor including a plurality of magnetic poles carried by each impeller, having motor stators, each including electrically conductive coils located adjacent to or within the housing. At least one of the rotors is adopted to rotate clockwise, and at least one of rotors is adopted to rotate counterclockwise. By this means, stator or stationary blades between the rotors may not be needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.