Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1999-02-12
2000-04-18
Getzow, Scott M.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
A61N 1362
Patent
active
06052622&
ABSTRACT:
A heart stimulator has a pulse generator for producing stimulation pulses of varying amplitudes and varying durations for stimulating the heart of a patient, and an evoked response detector. The evoked response detector includes measuring and memory circuitry for measuring the charge delivered by a stimulation pulse. The measuring and memory circuitry determine and store, as a reference voltage, a charged voltage value related to the measured charge. Monitoring circuitry monitors the combined polarization and possible evoked response signal picked up from the patient's heart after the delivery of a stimulation pulse and derive a corresponding monitoring voltage value therefrom. A comparator compares the monitoring voltage value to the charged voltage value for determining, from the result of the comparison, the presence or absence of an evoked response.
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Getzow Scott M.
Pacesetter AB
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