Patent ID: 9061158
Filing Date: 2015-06-23
Classification: A61B,A61N

Abstract:
1. An implantable cardiac function management device comprising: an electrostimulation energy delivery circuit, configured to issue electrostimulations for delivery using first and second pacing electrodes; an evoked response (ER) sensing circuit, configured to sense an ER signal of a subject in response to an electrostimulation wherein the ER sensing circuit includes a heart-sound sensing circuit, configured to sense the ER signal as a heart-sound signal representative of mechanical activation of the heart of the subject; and a processor circuit, coupled to the ER sensing circuit and the electrostimulation energy delivery circuit, wherein in an operating mode of the device, the processor circuit is configured to adjust electrostimulation energy while monitoring a characteristic of the ER signal, and is configured to indicate a change in anodal capture including a shift from cathodal-only capture to at least partially anodal capture and indicate a shift from at least partially anodal capture to cathodal-only capture when the characteristic of the ER signal meets at least one criteria.