Viscous seal blood pump
US5098256A · kind A · utility
134Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1989 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Nov 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S415/90
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pump includes a housing having an inlet and outlet communicating with a pump chamber. A rotor received in the pump chamber is rotated by a drive motor. A drive shaft extending between the motor and rotor is sealed by a fluid seal. The housing includes an opening defining a clearance with the drive shaft on the order of one or two thousandth (0.002) of an inch. A viscous, biocompatible fluid is utilized as the seal fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.