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IMPLANTABLE MEDICAL DEVICE SENSING WIRELESS ECG AS SUBSTITUTE FOR INTRACARDIAC ELECTROGRAM

  • US 20070167849A1
  • Filed: 03/29/2007
  • Published: 07/19/2007
  • Est. Priority Date: 10/28/2004
  • Status: Active Grant
First Claim
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1. A cardiac rhythm management (CRM) system, comprising:

  • an implantable medical device including;

    a primary sensing circuit including an electrogram sensing circuit to sense an intracardiac electrogram;

    an auxiliary sensing circuit including a wireless electrocardiogram (ECG) sensing circuit to sense a subcutaneous ECG;

    a processing circuit having an input to receive a first signal being one of the intracardiac electrogram and the subcutaneous ECG;

    a switch circuit coupled to the input of the processing circuit, the switch circuit configured to receive a selection signal and to connect the input of the processing circuit to one of the primary sensing circuit and the auxiliary sensing circuit according to the selection signal; and

    a selection circuit coupled to the switch circuit, the selection circuit adapted to produce the selection signal; and

    a plurality of implantable subcutaneous electrodes coupled to the auxiliary sensing circuit.

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