Rate adaptive pacemaker and method of cardiac pacing
First Claim
1. A pacemaker having a stimulus generator for delivering pacing stimuli, means for controlling the stimulus rate of said delivered pacing stimuli, and threshold tracking means for tracking said patient'"'"'s threshold to delivered stimuli, said pacemaker being characterized by having means for controlling said stimulus rate as a function of said tracked patient threshold.
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Accused Products
Abstract
An improved automatically rate adaptive pacemaker, wherein the rate of delivered stimulus pulses is controlled as a function of sensed hearbeat characteristics and/or patient threshold. The pacemaker analyzes different characteristics or parameters of the detected heartbeat signal, and the rate of delivered stimulus pulses is controlled as a function of predetermined correlation factors. The pacemaker includes means for automatic threshold tracking, and also for adjusting the rate of delivered stimulus pulses as a continuous function of the patient threshold.
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Citations
6 Claims
- 1. A pacemaker having a stimulus generator for delivering pacing stimuli, means for controlling the stimulus rate of said delivered pacing stimuli, and threshold tracking means for tracking said patient'"'"'s threshold to delivered stimuli, said pacemaker being characterized by having means for controlling said stimulus rate as a function of said tracked patient threshold.
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6. A method of cardiac pacing of a patient wherein the rate of pacing is varied as a function of detected patient stimulus threshold, comprising:
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a. delivering pacing stimuli to a patient'"'"'s heart, said stimuli being delivered at a controllable rate; b. tracking the threshold of said patient to delivered pacemaker stimuli; and c. controlling the rate of delivered stimuli as a function of said tracked patient threshold.
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Specification