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Cardiac assistance systems having multiple fluid plenums

  • US 6,602,182 B1
  • Filed: 11/28/2000
  • Issued: 08/05/2003
  • Est. Priority Date: 11/28/2000
  • Status: Expired due to Term
First Claim
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1. A control system for activating a cardiac pumping unit comprising:

  • an electrode for implantation on the heart or a suitable adjacent site, to receive electrical signals capable of indicating reliably the beginning of systole;

    an electronic controller for synchronized release of actuating fluid to a pumping unit and for subsequent synchronized evacuation of fluid from the pumping unit;

    a plenum for storage of a pressurized volume of fluid of sufficient size to provide a flow at nearly constant pressure during the release interval;

    a plenum for storage of evacuated fluid which is maintained at a sufficient state of evacuation so as to provide evacuating flow at a nearly constant pressure during the evacuation interval; and

    an energy converter for pumping fluid from the evacuated plenum to the pressurize plenum and maintaining their respective pressurized states.

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