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Hemodynamically responsive system for and method of treating a malfunctioning heart

  • US 4,986,270 A
  • Filed: 05/04/1989
  • Issued: 01/22/1991
  • Est. Priority Date: 10/06/1987
  • Status: Expired due to Term
First Claim
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1. In a system for treating a malfunctioning heart of the type which includes storage means for storing electrical energy, electrode means for electrically coupling the storage means to the heart, pressure responsive sensing means for sensing pressure within at least one vessel between the heart and at least one lung, means for providing a first signal representative of baseline pressure, means responsive to output from the sensing means for developing a second signal representing mean current pressure over a period of given duration, and means responsive to output from the means for providing the first signal and output from the means for developing the second signal for charging and enabling discharge of the electrical energy stored by the storage means across the electrode means upon change in the mean current pressure of at least a predetermined amount from the representative baseline pressure.

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