Cardiac stimulation device and method for storing diagnostic data in an automatic capture system
OwnerKerry Bradley, Laurence S. Slomaninventors
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Abstract
A system and associated method for acquiring, storing, and displaying evoked response signal features for the purposes of monitoring evoked response variability and evaluating the performance of automatic capture. The system further acquires, stores, and displays the number of suspected fusion events for the purpose of improving fusion avoidance through either automatic modification to fusion avoidance mechanisms or by providing a clinician with diagnostic information helpful in selecting programmable operating parameters.
Claims33
A method of acquiring and storing cardiac data for use in a stimulation device, the method comprising:
- setting a signal detection window following a stimulation pulse delivered to a cardiac chamber during a threshold test;
- sampling a cardiac signal during the detection window;
- determining a set of signal features from a sampled signal;
- correlating the set of signal features to an evoked response;
- storing the set of signal features;
- generating a statistical analysis based on a stored set of signal features, that is reflective of a variability of the evoked response features over time;
- and
- displaying the statistical analysis to allow for monitoring the evoked response variability to evaluate automatic capture performance.
A stimulation device for acquiring and storing cardiac data, comprising:
- a generator that selectively generates stimulation pulses;
- a timing circuit connected to the generator for setting a signal detection window following a delivery of a stimulation pulse to a cardiac chamber during a threshold test;
- a sampler that samples a cardiac signal during the detection window, in response to the delivery of the stimulation pulse;
- a controller, coupled to the sampler, that determines a set of signal features from a sampled signal;
- memory that stores the set of signal features;
- an analyzer, connected to the controller, that generates a statistical analysis based on a stored set of signal features, that is reflective of a variability of the evoked response features over time;
- and
- a display that displays the statistical analysis, to allow for monitoring the evoked response variability to evaluate automatic capture performance.
A stimulation device for acquiring and displaying cardiac data, comprising:
- means for delivering a stimulation pulse to a cardiac chamber during a threshold test;
- means for setting a signal detection window following the delivery of the stimulation pulse;
- means for sampling a cardiac signal during the detection window;
- means for defining a set of signal features from a sampled signal;
- means for generating a statistical analysis based on a set of signal features, that is reflective of a variability of the evoked response features over time;
- and
- means for displaying the statistical analysis to allow for monitoring the evoked response variability to evaluate automatic capture performance.
Dependencies are inferred from the claim text.