Patent ID: 6097983
Filing Date: 2000-08-01
Classification: A61B,A61N

Abstract:
An implantable heart stimulator comprising:a stimulator capsule;a lead system including an atrial electrode adapted for placement in an atrium and a ventricular electrode adapted for placement in a ventricle;a detecting system contained in said stimulator capsule for detecting cardiac events, said detecting system being connected to said lead system and to said stimulator capsule and having a first signal channel for detecting signals sensed between said atrial electrode and said ventricular electrode, and a second signal channel for detecting signals sensed between one of said atrial electrode and said ventricular electrode, and said stimulator capsule;an analog-to-digital converter for obtaining sampled values of said signals in each of said first and second channels and for converting said sampled values into digital words; anddecision logic applied with said digital words for forming differences between said digital words and for comparing said digital words and said differences to reference criteria for determining an occurrence of a cardiac event.