Centrifugal blood pump assembly
US5947703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A centrifugal blood pump assembly according to one aspect of the invention includes a housing, an impeller adapted to rotate within the housing for feeding blood, an impeller position control device, and an impeller rotation torque generating device. The impeller rotates without contacting the inner surface of the housing when the position control device and torque generating device are operative. Even when the position control device is inoperative, operation of the torque generating device enables rotation of the impeller while a blood flowpath is defined between the surface of the impeller facing the torque generating device and the inner surface of the housing. A centrifugal blood pump assembly according to another aspect of the invention involves a pump including a housing having blood inlet and outlet ports and an impeller adapted to rotate within the housing for feeding blood. The assembly also includes an uncontrolled magnetic bearing arrangement for the impeller, and controlled magnetic bearing arrangement for the impeller. The bearing arrangements are removably mounted to the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.