Apparatus for supporting heart performance
US6506146B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 12, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | May 12, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a means for support of the performance of a heart (1) in which fluid is taken from blood vessels via an external pump (7) and is returned to the blood vessels, the amount of fluid being controlled as a function of the measured values, a catheter in the ventricle is equipped with sensors (4) for measuring the volume of fluid per unit of time. The sensors (4) are connected to an evaluation circuit in which the ratio of the diastolic volume to the systolic volume per heartbeat or unit of time, especially the output rate and/or the deviation of the volume which has been delivered by the heart per unit of time from a defined setpoint, for example the setpoint which has been computed from body-specific data for the cardiac output (HZV), is evaluated and a signal is generated. The pump (7) via which fluid is withdrawn from the ventricle is controlled depending on the generated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.