Implantable cardiac stimulation device with time-of-day selectab

Details Implantable cardiac stimulation device with time-of-day selectab Implantable cardiac stimulation device with time-of-day selectab

1996-03-08

1997-03-04

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 137

Patent

active

056074590

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.

REFERENCES:
patent: 5143065 (1992-09-01), Adkins et al.

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