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Implantable active medical device enslaved to at least one physiological parameter

  • US 6,336,048 B1
  • Filed: 11/24/1998
  • Issued: 01/01/2002
  • Est. Priority Date: 11/25/1997
  • Status: Expired due to Term
First Claim
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1. An active implantable medical device having a control function enslaved to at least one physiological parameter comprising:

  • at least one effort sensor (MV) having a plurality of determinable states, the sensor measuring a primarily physiological parameter and delivering a signal which is a function of effort exerted by a patient bearing the device;

    at least one activity sensor (G) having a plurality of determinable states, the sensor measuring a primarily physical parameter and delivering a signal indicative of the activity of the patient bearing the device;

    means for determining the determinable states of the respective sensors;

    means for identifying periodically a relative sequence of successive changes in the state of the respective sensors according to predetermined identification criteria;

    means for analyzing periodically the relative sequence of successive changes in the state of the respective sensors according to predetermined analysis criteria;

    means for determining a command escape interval (IECONSIG) controlling the control function of the device from the analyzed states of the sensors;

    means for determining an escape interval of the activity sensor (IEG); and

    means for limiting the command escape interval (IECONSIG) as a function of the escape interval of the activity sensor (IEG).

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