Blood pump and pump unit
US8114008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | May 15, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/824
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Provided are a magnetic coupling as an axial bearing including a driven magnet (11B3) that is a permanent magnet provided to a rotating body (11) inside a casing (12) and a drive magnet (23A) that is a permanent magnet placed face to face with the driven magnet in a radial direction of the rotating body outside the casing to be magnetically coupled with the driven magnet, a driving motor (22) that rotatably drives the drive magnet about an axis (P) of the rotating body, a radial bearing that is a dynamic bearing having annular bearing surfaces (12B1, 11B1) centering on the axis on an inner wall of the casing and the rotating body, each of the annular bearing surfaces being arranged with a gap between the drive magnet and the driven magnet in the radial direction of the rotating body, and a closed impeller (11A) including a front shroud (11A1) arranged on a front side in the axis direction in the rotating body, a rear shroud (11A2) arranged on a rear side in the axis direction of the front shroud, and a vane (11A3) arranged between the front shroud and the rear shroud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.