US 9,808,164 B2
Evaluation of cardiac dyssynchrony based on chest wall motion and electrical cardiac activity
Mirko de Melis, Maastricht (NL); and Giorgio Corbucci, Cento (IT)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Mirko de Melis, Maastricht (NL); and Giorgio Corbucci, Cento (IT)
Filed on Aug. 28, 2012, as Appl. No. 13/596,833.
Claims priority of provisional application 61/541,505, filed on Sep. 30, 2011.
Prior Publication US 2013/0085404 A1, Apr. 4, 2013
Int. Cl. A61B 5/0245 (2006.01); A61B 5/0452 (2006.01); A61B 5/11 (2006.01)
CPC A61B 5/0245 (2013.01) [A61B 5/0452 (2013.01); A61B 5/1102 (2013.01); A61B 2562/0219 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A system comprising:
an external accelerometer configured to generate an acceleration signal indicative of chest wall motion of a patient; and
a processor configured to integrate the acceleration signal to generate a velocity signal, receive an electrical cardiac signal indicative of electrical cardiac activity of the patient, temporally correlate the velocity signal with the electrical cardiac signal, determine a time delay between a deflection of the electrical cardiac signal indicative of electrical activation of a ventricle of a heart of the patient and a subsequent greatest peak of the velocity signal, and generate an output indicative of a cardiac dyssynchrony status of the patient based on the time delay.