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Methods and implantable medical systems that implement exposure modes of therapy that allow for continued operation during exposure to a magnetic disturbance

  • US 10,441,798 B2
  • Filed: 04/14/2017
  • Issued: 10/15/2019
  • Est. Priority Date: 04/15/2016
  • Status: Active Grant
First Claim
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1. A method of controlling an exposure mode of therapy of an implantable medical device, comprising:

  • determining a device type of the implantable medical device by accessing device type information stored by the implantable medical device;

    upon detecting a need to switch to the exposure mode, selecting the exposure mode of therapy of the implantable medical device based on the device type and a pre-exposure mode of therapy; and

    after detecting the need to switch to the exposure mode, implementing the exposure mode of therapy at the implantable medical device by;

    performing a first sensing of a heart rate using at least one sensing setting;

    when the first sensing of heart rate indicates at least a first amount of noise is present, implementing an asynchronous pacing mode and then making adjustments to the at least one sensing setting prior to a next sensing of the heart rate that is subsequent to the first sensing and that uses the at least one sensing setting that has been adjusted; and

    when the first sensing of heart rate indicates that at least the first amount of noise is not present, then implementing a triggered pacing mode.

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