Method and apparatus for driving an intra-aortic balloon pump
US5817001A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | May 27, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M60/435
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intra-aortic balloon pump includes an overdrive system for inflating the intra-aortic balloon with a working gas and deflating the balloon more rapidly. A substantially constant inflation pressure is applied to the working gas for a predetermined time to substantially fully inflate the balloon to a working pressure. The inflation pressure is then reduced to a pressure which is substantially equal to the working pressure so as to maintain the balloon in the inflated condition and prevent its overinflation. Subsequently, a substantially constant deflation pressure is applied to the working gas and is held for a predetermined time to substantially fully deflate the balloon to a desired end deflation pressure. The deflation pressure is then increased to a pressure which is substantially equal to the end deflation pressure so as to maintain the balloon in the deflated condition and ready the system for the next inflation cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.