Centrifugal blood pump apparatus
US7470246B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jul 5, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/422
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A centrifugal blood pump apparatus has a centrifugal pump section including an impeller having a first magnetic material therein and rotating inside the housing to feed a fluid by a centrifugal force generated during a rotation thereof; an impeller rotational torque generation section having a rotor having a magnet for attracting the first magnetic material of the impeller thereto, and a motor for rotating the rotor; and a dynamic pressure groove formed at a portion, of an inner surface of the housing, located at a rotor-disposed side thereof. The centrifugal blood pump apparatus further includes an electromagnet for attracting the impeller in a direction opposite to a direction in which the magnet of the rotor attracts the impeller and helping the impeller levitate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.