Surgery – Cardiac augmentation – With condition responsive means
Patent
1998-03-04
2000-05-23
Finkel, Sharon
Surgery
Cardiac augmentation
With condition responsive means
623 3, A61N 1362, A61M 100
Patent
active
060660864
ABSTRACT:
An automatic speed control system continually adjusts the speed of an implanted cardiac assist blood pump to an optimum level for the varying physiological needs of the patient. It does this by periodically iteratively incrementing the speed setpoint of the pump. When the system detects the imminence of a ventricular collapse at diastole, it decrements the speed setpoint by a predetermined safety margin. An alarm condition is provided if the setpoint decrease results in an insufficient blood flow rate through the pump. The flow rate and imminence of ventricular collapse are computed in real time as functions of only the pump's motor current and speed setpoint.
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Amin Devin V.
Antaki James F.
Boston John Robert
Butler Kenneth C.
Choi Seongjin
Finkel Sharon
Nimbus Inc.
Weissenberger Harry G.
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