IMPLANTABLE MEDICAL DEVICE (IMD) SENSING MODIFICATIONS RESPONSIVE TO DETECTED PACING PULSES
First Claim
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; and
a 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.
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Accused Products
Abstract
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.
97 Citations
22 Claims
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1. An implantable medical device comprising:
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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; and a 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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sensing electrical signals at an extravascular location of a patient; processing the electrical signals sensed at the extravascular location; detecting, based on the processing of the electrical signals sensed on the implantable electrical lead, delivery of a pacing pulse from a second implantable medical device; and blanking, based on the detection of the pacing pulse, the sensed electrical signal to remove the pacing pulse from the sensed electrical signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An extravascular implantable cardioverter-defibrillator (ICD) system comprising:
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an implantable medical lead that includes one or more electrodes that sense electrical signals at an extravascular location of a patient; an ICD coupled to the implantable medical lead, the ICD comprising; a housing electrode; a plurality of sensing channels, each of the plurality of sensing channels being configured to process electrical signals sensed via a respective sensing vector formed by combinations of the one or more electrodes on the implantable medical lead and the housing electrode of the ICD; a pace pulse detector that analyzes the electrical signals sensed on a first of the plurality of sensing channels and detects a pacing pulse delivered by a second implantable medical device based on the analysis; a blanking module within the first of the plurality of sensing channels; and a blanking control module configured to, in response to pace pulse detector detecting the pacing pulse, provide a control signal to the blanking module, wherein the blanking module, responsive to the control signal from the blanking control module, holds the sensed electrical signal at a value of the sensed electrical signal to remove the pacing pulse from the sensed electrical signal on the first of the plurality of sensing channels. - View Dependent Claims (21, 22)
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Specification