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System for detecting information in an artificial cardiac pacemaker

  • US 4,041,954 A
  • Filed: 05/07/1975
  • Issued: 08/16/1977
  • Est. Priority Date: 05/07/1974
  • Status: Expired due to Term
First Claim
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1. A system for detecting information about the e.m.f. of series-connected batteries in an artificial cardiac pacemaker comprising:

  • energy supplying means for supplying energy to the artificial cardiac pacemaker from the outside;

    energy receiving means in the pacemaker for receiving said energy;

    information generating means for generating an information signal representative of the e.m.f. of the batteries in the pacemaker including a plurality of transistors each of which is connected to one of said batteries such that each transistor changes from one state to the other state when the e.m.f. of the corresponding battery becomes less than a predetermined value;

    energy changing means receptive of the energy passing through said energy receiving means for changing the energy into an information energy signal according to said information signal;

    transmitting means for transmitting said information energy signal to the outside of the pacemaker; and

    indicating means for indicating the information in the pacemaker according to said information energy signal.

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