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Implantable electrical nerve stimulator/pacemaker with ischemia for decreasing cardiac workload

  • US 5,199,428 A
  • Filed: 03/22/1991
  • Issued: 04/06/1993
  • Est. Priority Date: 03/22/1991
  • Status: Expired due to Term
First Claim
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1. A system for influencing the natural biological blood pressure regulatory system in a patient, for reducing and controlling ischemia of myocardial tissue by electrical pulse by stimulation of the patient'"'"'s nerve system, said system comprising:

  • ischemia sensor means adapted to be located within the venous return system of a patient'"'"'s heart for sensing a constituent of the venous return blood draining from myocardial tissue and producing an electrical output signal substantially representing a chemical constituent of that blood;

    signal transforming means for receiving the sensor means output signal and developing a stimulation trigger signal in response to an output signal indicative of a condition of ischemia; and

    means responsive to said trigger signal for applying electric stimulation pulses to said nerve system.

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