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:
May. 27, 2014
Filed:
May. 12, 2010
Anders Björling, Solna, SE;
Malin Hollmark, Solna, SE;
Tomas Svensson, Stockholm, SE;
Stefan Hjelm, Bålsta, SE;
Kjell Norén, Solna, SE;
Karin Järverud, Solna, SE;
Anders Björling, Solna, SE;
Malin Hollmark, Solna, SE;
Tomas Svensson, Stockholm, SE;
Stefan Hjelm, Bålsta, SE;
Kjell Norén, Solna, SE;
Karin Järverud, Solna, SE;
St. Jude Medical AB, Jarfalla, SE;
Abstract
An implantable medical device () is configured for generating a cardiogenic impedance signal representative of the cardiogenic impedance of at least a portion of a heart () of a subject () during at least a portion of cardiac cycle. A moment processor () calculates a moment parameter value based on the cardiogenic impedance signal. The moment parameter is representative of a weighted sum of impedance amplitudes within a time window centered at defined time instance within the cardiac cycle. The weights of the impedance amplitudes are further dependent on the length in time between the defined time instance and the point of time of the associated impedance amplitude. The moment parameter is of high diagnostic value and is employed by an arrhythmia classifier () in order to classify a detected arrhythmia of the heart (), such as discriminate between hemodynamically stable or unstable arrhythmias and/or supraventricular or ventricular tachycardia.