Pre-qualification of an alternate sensing configuration
First Claim
1. A method comprising:
- receiving a plurality of sensed signals, each of the sensed signals sensed by a respective one of a plurality of sensing configurations during a qualification event;
analyzing each of the sensed signals to detect cardiac events during the qualification event;
generating qualification information for each of the sensing configurations based on the analysis, the qualification information for each of the sensing configurations indicating whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for that sensing configuration during the qualification event;
identifying a first qualified one of the plurality of sensing configurations as a primary sensing configuration and a second qualified one of the plurality of sensing configurations as an alternate sensing configuration;
storing the qualification information for at least the alternate sensing configuration; and
receiving a signal sensed by the primary sensing configuration subsequent to the qualification event;
analyzing the signal received subsequent to the qualification event to detect cardiac events subsequent to the qualification event; and
subsequently switching, based on the previously stored qualification information for the alternate sensing configuration, from receiving and analyzing the signal sensed by the primary sensing configuration to receiving and analyzing a signal sensed by the alternate sensing configuration to detect cardiac events.
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Abstract
Multiple sensing configurations may be qualified based on one induced tachyarrhythmia, e.g., ventricular fibrillation, or other qualification event during an implantation procedure. Each sensing configuration comprises a different combination of two or more electrodes used for sensing electrical signals of the heart of the patient. In some examples, an implantable medical device or other device generates qualification information for each sensing configuration, which may indicate whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for the sensing configuration during the qualification event. One of the qualified configurations may initially be selected as a primary sensing configuration for subsequent cardiac event detection. Switching to an alternate sensing configuration, e.g., upon identification of any sensing integrity condition of the primary sensing configuration, may be expedited by the previous collection of qualification data for at least one other sensing configuration.
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Citations
26 Claims
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1. A method comprising:
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receiving a plurality of sensed signals, each of the sensed signals sensed by a respective one of a plurality of sensing configurations during a qualification event; analyzing each of the sensed signals to detect cardiac events during the qualification event; generating qualification information for each of the sensing configurations based on the analysis, the qualification information for each of the sensing configurations indicating whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for that sensing configuration during the qualification event; identifying a first qualified one of the plurality of sensing configurations as a primary sensing configuration and a second qualified one of the plurality of sensing configurations as an alternate sensing configuration; storing the qualification information for at least the alternate sensing configuration; and receiving a signal sensed by the primary sensing configuration subsequent to the qualification event; analyzing the signal received subsequent to the qualification event to detect cardiac events subsequent to the qualification event; and subsequently switching, based on the previously stored qualification information for the alternate sensing configuration, from receiving and analyzing the signal sensed by the primary sensing configuration to receiving and analyzing a signal sensed by the alternate sensing configuration to detect cardiac events. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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receiving a plurality of sensed signals, each of the sensed signals sensed by a respective one of a plurality of sensing configurations during a qualification event; analyzing each of the sensed signals to detect cardiac events during the qualification event; and generating qualification information for each of the sensing configurations based on the analysis, the qualification information for each of the sensing configurations indicating whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for that sensing configuration during the qualification event, wherein receiving a plurality of sensed signals comprises; receiving at least one of the signals with a narrow band filtered sense-amplifier; and receiving at least one other of the signals with a wide band filtered sense-amplifier.
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13. A system comprising:
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a sensing module that receives a plurality of sensed signals, each of the sensed signals sensed by a respective one of a plurality of sensing configurations during a qualification event; a processor that controls coupling of the sensing configurations to the sensing module; and a memory, wherein at least one of the sensing module and the processor analyzes each of the sensed signals to detect cardiac events during the qualification event, wherein the processor generates qualification information for each of the sensing configurations based on the analysis, the qualification information for each of the sensing configurations indicating whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for the sensing configuration during the qualification event, wherein the processor identifies a first qualified one of the plurality of sensing configurations as a primary sensing configuration for subsequent cardiac event detection and a second qualified one of the plurality of sensing configurations as an alternate sensing configuration, controls subsequent cardiac event detection by the sensing module via the primary sensing configuration, and stores the qualification information for at least the alternate sensing configuration within the memory, and wherein the processor subsequently switches the sensing module from the primary sensing configuration to the alternate sensing configuration for cardiac event detection based on the qualification information for the alternate sensing configuration previously stored within the memory. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system comprising:
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a plurality of electrodes implanted within a patient a sensing module that receives a plurality of sensed signals, each of the sensed signals sensed by a respective one of a plurality of sensing configurations during a qualification event, wherein each of the sensing configurations comprises a respective one of a plurality of different combinations of two or more electrodes from the plurality of electrodes; a processor that controls coupling of the sensing configurations to the sensing module; and a memory, wherein at least one of the sensing module and the processor analyzes each of the sensed signals to detect cardiac events during the qualification event, wherein the processor generates qualification information for each of the sensing configurations based on the analysis, the qualification information for each of the sensing configurations indicating whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for the sensing configuration during the qualification event, wherein the sensing module comprises at least one narrow band filtered sense-amplifier that receives at least one of the sensed signals and at least one wide band filtered sense-amplifier that receives at least one other of the sensed signals, wherein the sensing module analyzes the sensed signal received by the narrow band filtered sense-amplifier with the narrow band filtered sense-amplifier substantially in real-time, and wherein the processor converts the sensed signal received by the wide band filtered sense-amplifier to a digital signal, stores the signal within the memory, and subsequently analyzes the digital signal to detect cardiac events that occurred during the qualification event.
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26. A system comprising:
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means for receiving a plurality of sensed signals, each of the sensed signals sensed by a respective one of a plurality of sensing configurations during a qualification event; means for analyzing each of the sensed signals to detect cardiac events during the qualification event; means for generating qualification information for each of the sensing configurations based on the analysis, the qualification information for each of the sensing configurations indicating whether the sensing configuration is qualified for subsequent cardiac event detection based on an accuracy of the cardiac event detection for the sensing configuration during the qualification event; means for identifying a first qualified one of the plurality of sensing configurations as a primary sensing configuration and a second qualified one of the plurality of sensing configurations as an alternate sensing configuration; and means for storing the qualification information for at least the alternate sensing configuration, wherein the means for receiving receives a signal sensed by the primary sensing configuration subsequent to the qualification event and the means for analyzing analyzes the signal sensed by the primary sensing configuration subsequent to the qualification event to detect cardiac events subsequent to the qualification event, the system further comprising means for subsequently switching, based upon the previously stored qualification information for the alternate sensing configuration, the means for receiving and the means for analyzing from the primary sensing configuration to the alternate sensing configuration to detect cardiac events.
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Specification