Scott R. Stubbs;James O. Gilkerson;Diane Schuster;Hiten J. Doshi
发明人:
Scott R. Stubbs,James O. Gilkerson,Hiten J. Doshi,Diane Schuster
申请号：
US12907517
公开号：
US08565874B2
申请日:
2010.10.19
申请国别(地区):
US
年份:
2013
代理人:
摘要：
An implantable medical device (IMD) includes a lead having one or more sensing electrodes and one or more therapy delivery electrodes, and a sensor configured to detect the presence of static and time-varying scan fields in a magnetic resonance imaging (MRI) environment. A controller, in electrical communication with the lead and the sensor, is configured to process signals related to tachycardia events sensed via the one or more sensing electrodes and to deliver pacing and shock therapy signals via the one or more therapy delivery electrodes. The controller compares the sensed static and time-varying scan fields to static and time-varying scan field thresholds. The controller controls delivery of anti-tachycardia pacing and shock therapy signals as a function of the detected tachycardia events, the comparison of the sensed static scan field to the static scan field threshold, and the comparison of the time-varying scan fields to the time-varying scan field thresholds.
