Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1998-11-17
2000-08-01
Schaetzle, Kennedy
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
600518, A61N 1368
Patent
active
060979836
ABSTRACT:
A cardiac event detecting system for an implantable heart stimulator intended to be connected to the heart of a patient through at least two unipolar electrode leads or at least one bipolar electrode lead having one electrode pole in the atrium and one electrode pole in the ventricle for sensing heart signals, has at least two signal channels for signals sensed between the two electrode poles and between one of the electrode poles and the stimulator capsule, respectively. Each signal channel has a signal processing stage. Decision logic compares the signals from the two signal channels with signal criteria for detecting the occurrence of a cardiac event. An A/D-convertor converts sampled values of the sensed heart signals into digital words for each signal channel. The decision logic is adapted for comparing the digital words and their differences with the criteria for determining the occurrence of a cardiac event.
REFERENCES:
patent: 4557266 (1985-12-01), Schober
patent: 4905708 (1990-03-01), Davies
patent: 5058599 (1991-10-01), Andersen
patent: 5607457 (1997-03-01), Schuller
Pacesetter AB
Schaetzle Kennedy
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