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Programmable tachycardia pacer

  • US 4,181,133 A
  • Filed: 05/22/1978
  • Issued: 01/01/1980
  • Est. Priority Date: 05/22/1978
  • Status: Expired due to Term
First Claim
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1. Programmable apparatus adapted for implantation in a patient, and providing the dual functions of cardiac pacing and delivery of tachycardia breakup pulses upon occurrence of tachycardia in said patient, comprising:

  • a. pacing means for providing pacing timing signals in the absence of natural patient heartbeats, said pacing means including a clock generator which generates clock pulses independently of patient heartbeat signals;

    b. means for detecting the condition of tachycardia in said patient;

    c. tachycardia means for generating tachycardia timing signals in response to said detected tachycardia, said tachycardia means being connected to said pacing means and generating said tachycardia timing signals from said clock pulses;

    d. programmable control means for controlling at least one variable of said tachycardia timing signals and for generating output control signals; and

    e. common programmable output means connected to receive said pacing timing signals and said tachycardia timing signals, and connected to be controlled by said output control signals, for generating and delivering to said patient output pulses in response to each of such timing pulses.

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