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:
Jan. 24, 2017
Filed:
Dec. 08, 2015
Applicant:
St. Jude Medical Ab, Jarfalla, SE;
Inventors:
Michael Broome, Ekero, SE;
Andreas Blomqvist, Taby, SE;
Assignee:
ST. JUDE MEDICAL AB, Farfalla, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N 1/365 (2006.01); A61B 5/02 (2006.01); A61B 5/053 (2006.01); A61B 5/00 (2006.01); A61N 1/368 (2006.01);
U.S. Cl.
CPC ...
A61B 5/02028 (2013.01); A61B 5/053 (2013.01); A61B 5/0538 (2013.01); A61B 5/686 (2013.01); A61B 5/6846 (2013.01); A61B 5/7239 (2013.01); A61N 1/3682 (2013.01); A61N 1/36521 (2013.01); A61B 5/7235 (2013.01);
Abstract
An implantable medical device applies an electric signal to at least a portion of a heart in a subject. A resulting electric signal is collected from the heart and is used together with the applied signal for determining a cardiogenic impedance signal. The impedance signal is processed in order to estimate an isovolumetric contraction time, an isovolumetric relaxation time and an ejection time for a heart cycle. These three time parameters are employed for calculating a Tei-index of the heart. The Tei-index can be used as myocardial performance parameter in heart diagnosis and/or cardiac therapy adjustment.