Implantable cardiac stimulation device with time-of-day selectable warning system
First Claim
1. An implantable cardiac stimulator system comprising a cardiac stimulator comprisingmeans for producing a cardiac therapy,means for detecting a predetermined condition,means for producing a physiologic stimulation signal to warn said patient of said detected condition, andmeans for delaying delivery of said physiologic stimulation signal to a selected time of day, andat least one lead, said lead comprisingat least one electrode adapted to be implanted adjacent a patient'"'"'s heart for delivering said cardiac therapy to the heart, anda conductor for electrically connecting said therapy producing means to said electrode.
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Accused Products
Abstract
A cardiac stimulator including a patient warning apparatus, having a real time-clock for delaying delivery of a warning stimulus until a preselected time of day. The time of day may be selected dynamically with respect to detected patterns of patient activity. The stimulator can adjust the time for delivery of patient warning based on the detected circadian rhythm of the patient. In one embodiment, the cardiac stimulator is an implantable pacemaker or defibrillator or combination which can also be programmed to automatically alter the peak voltage of its output stimulus, in particular, to increase the peak voltage of the output stimulus whenever a condition exists requiring patient notification or warning. A stimulus generator in the stimulator can delivers electrical current to the electrically conductive suture point or warning electrode at a preselected voltage level. A sensor for detecting patient reaction to a warning stimulus may be an accelerometer or motion/vibration transducer or other sensor capable of detecting a reaction to a warning stimulus. The level of the stimulus directed to the patient'"'"'s skeletal muscle is regulated until a preselected magnitude of reaction has been achieved. The reaction is also maintained below a pre-selected maximum to avoid discomfort to the patient.
53 Citations
28 Claims
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1. An implantable cardiac stimulator system comprising a cardiac stimulator comprising
means for producing a cardiac therapy, means for detecting a predetermined condition, means for producing a physiologic stimulation signal to warn said patient of said detected condition, and means for delaying delivery of said physiologic stimulation signal to a selected time of day, and at least one lead, said lead comprising at least one electrode adapted to be implanted adjacent a patient'"'"'s heart for delivering said cardiac therapy to the heart, and a conductor for electrically connecting said therapy producing means to said electrode.
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24. An implantable medical device comprising
means for producing a therapy, means for delivering said therapy to a selected portion of a patient'"'"'s body, means for detecting a predetermined condition, means for producing a signal to warn said patient of said detected condition, and means for delaying delivery of said signal to a selected time of day.
Specification