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Isolation of sensing and stimulation circuitry

  • US 8,498,698 B2
  • Filed: 08/31/2009
  • Issued: 07/30/2013
  • Est. Priority Date: 10/31/2008
  • Status: Active Grant
First Claim
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1. An implantable medical device (IMD) comprising:

  • a housing;

    a cardiac module, in the housing, configured to deliver electrical stimulation therapy to a patient;

    a power source that couples to the cardiac module and is configured to provide power to the cardiac module;

    at least one isolation circuit that couples to the power source; and

    a neurostimulation module, in the housing, that couples to the power source via the at least one isolation circuit and is configured to deliver electrical stimulation therapy to the patient or sense a physiological condition of the patient,wherein the at least one isolation circuit is configured to electrically isolate the power source from the neurostimulation module to reduce common-mode interference on the neurostimulation module, andwherein the common-mode interference is caused by the cardiac module delivering electrical stimulation therapy to the patient.

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