The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2000
Filed:
Nov. 17, 1998
Hans Strandberg, Sundbyberg, SE;
Pacesetter AB, Jarfalla, SE;
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.