IMPLANTABLE CARDIAC STIMULATOR WITH AUTOMATIC GAIN CONTROL

An implantable cardiac stimulator for detecting and treating bradycardias includes a sense amplifier responsive to sensed cardiac signals for detecting cardiac activity. The sense amplifier includes an automatic gain control amplifier, a filter and quad comparator having a pair of signal channels to...

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Bibliographic Details
Main Authors BAKER, ROSS G., JR, HALUSKA, EDWARD A, VANDEGRIFF, JOSEPH W
Format Patent
LanguageEnglish
French
Published 22.02.1994
Edition5
Subjects
DIAGNOSIS
ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
SURGERY
ULTRASOUND THERAPY
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Summary:An implantable cardiac stimulator for detecting and treating bradycardias includes a sense amplifier responsive to sensed cardiac signals for detecting cardiac activity. The sense amplifier includes an automatic gain control amplifier, a filter and quad comparator having a pair of signal channels to establish sensing thresholds, margins and signal gain. The sense amplifier has a feedback loop containing a microprocessor which implements preselected algorithms in conjunction with the outputs of the quad comparator to variably adjust the amplifier gain and to programmably control the sensing margin.
Bibliography:Application Number: CA19890596531