Method and apparatus for regulating the flow rate of a periodic flow heart prosthesis
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United States of America Patent
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Oct 4, 1994
Grant Date -
N/A
app pub date -
Sep 22, 1992
filing date -
Feb 9, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method and apparatus enabling the blood flow rate conveyed by a heart prosthesis drive by an electrical actuator (18) to be adapted to the flow rate available in the patient's venous return. An apparatus includes a sensor (11) for measuring a physical operating parameter of the prosthesis, and having a passband which extends beyond the variation frequency of the blood flow, and it comprises an angular position sensor (10) for determining the position of the prosthesis, a central unit (15) which receives signals from the sensor (11) and from the angular position sensor (10), which central unit is capable of controlling power supply means (5) of the actuator, and a memory (16) in which normal values of the physical operating parameter of the prosthesis are stored. The apparatus of the invention is particularly intended for monitoring the operation of human heart prostheses.
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