29-10-2015 дата публикации
Номер: US20150305640A1
Принадлежит:
In situations in which an implantable medical device (IMD) (e.g., an extravascular ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the IMD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the IMD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the IMD includes a pace pulse detector that detects, based on the processing of sensed electrical signals, delivery of a pacing pulse from a second implantable medical device and blank, based on the detection of the pacing pulse, the sensed electrical signal to remove the pacing pulse from the sensed electrical signal. 1. An implantable medical device comprising:a sensing channel that includes a plurality of components that process electrical signals sensed on an implantable electrical lead coupled to the implantable medical device;a pace pulse detector that detects pacing pulses delivered by a second implantable medical device based on the processing of the electrical signals sensed on the implantable electrical lead;a blanking module; anda blanking control module configured to, in response to pace pulse detector detecting the pacing pulse, cause the blanking module to blank the electrical signal of the sense channel to remove the pacing pulse from the sensed electrical signal.2. The device of claim 1 , wherein the pace pulse detector detects pacing pulses having amplitudes greater than or equal to four (4) millivolts and a pulse width of at least one (1) millisecond.3. The device of claim 1 , the blanking module holds the sensed electrical signal at a value of the sensed electrical signal prior to the pacing pulse to remove the pacing pulse from the sensed electrical signal.4. The device of claim 3 , wherein the blanking module ...
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