Configuring operating parameters of a medical device based on exposure to a disruptive energy field
First Claim
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1. An implantable medical device comprising:
- a memory to store operating parameters of the implantable medical device;
a sensor that detects a disruptive energy field;
an effect determination module to determine an effect of the disruptive energy field on a tissue of a patient in which the implantable medical device is implanted or on operation of the implantable medical device after the sensor has detected the disruptive energy field;
a processor to determine whether the effect compromises the operational integrity of the implantable medical device; and
a parameter adjustment module to adjust at least one operating parameter of the implantable medical device to switch from a synchronous pacing mode to an asynchronous pacing mode when the processor determines that the effect does compromise the operational integrity of the implantable medical device and to not adjust the at least one operating parameter of the implantable medical device when the processor determines that the effect does not compromise the operational integrity of the implantable medical device, the parameter adjustment module adjusts the at least one operating parameter based on the determined effect.
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Abstract
An implantable medical device (IMD) determines an effect of the disruptive energy field and adjusts one or more operating parameters of the IMD based on at least the determined effect. In some instances, the IMD may determine an actual effect of the disruptive energy field, such as a temperature change, impedance change, pacing or sensing threshold change, MRI-induced interference one pacing or sensing, or other actual effect. In other instances, the IMD may determine a predicted effect of the disruptive energy field based on one or more characteristics of the exposure. In any case, the IMD adjusts one or more parameters based on at least the determined effect.
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Citations
38 Claims
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1. An implantable medical device comprising:
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a memory to store operating parameters of the implantable medical device; a sensor that detects a disruptive energy field; an effect determination module to determine an effect of the disruptive energy field on a tissue of a patient in which the implantable medical device is implanted or on operation of the implantable medical device after the sensor has detected the disruptive energy field; a processor to determine whether the effect compromises the operational integrity of the implantable medical device; and a parameter adjustment module to adjust at least one operating parameter of the implantable medical device to switch from a synchronous pacing mode to an asynchronous pacing mode when the processor determines that the effect does compromise the operational integrity of the implantable medical device and to not adjust the at least one operating parameter of the implantable medical device when the processor determines that the effect does not compromise the operational integrity of the implantable medical device, the parameter adjustment module adjusts the at least one operating parameter based on the determined effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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storing operating parameters of an implantable medical device in a memory; sensing a disruptive energy field at the implantable medical device; after sensing the disruptive energy field, then determining, with the implantable medical device, an effect of the disruptive energy field on a tissue of a patient in which the implantable medical device is implanted or on operation of the implantable medical device; determining, with the implantable medical device, whether the effect compromises the operational integrity of the implantable medical device; adjusting at least one operating parameter of the implantable medical device to change a pacing amplitude when the effect is determined to compromise the operational integrity of the implantable medical device, the adjusting of the at least one operating parameter being based on the determined effect; and maintaining the at least one operating parameter of the implantable medical device when the effect is determined to not compromise the operational integrity of the implantable medical device. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An implantable medical device comprising:
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means for storing operating parameters of the implantable medical device; means for sensing a disruptive energy field; means for determining an effect of the disruptive energy field on a tissue of a patient in which the implantable medical device is implanted or on operation of the implantable medical device after sensing the disruptive energy field; means for determining, with the implantable medical device, whether the effect compromises the operational integrity of the implantable medical device; and means for adjusting at least one operating parameter of the implantable medical device to change a pacing pulse width when the effect is determined to compromise the operational integrity of the implantable medical device, wherein the means for adjusting do not adjust the at least one operating parameter of the implantable medical device when the effect is determined to not compromise the operational integrity of the implantable medical device, the means for adjusting the at least one operating parameter basing the adjustment on the determined effect. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification