US 12,268,886 B2
Method and system for monitoring types of capture of a leadless implantable medical device
Xiaoyi Min, Camarillo, CA (US)
Assigned to Pacesetter, Inc., Sylmar (CA)
Filed by PACESETTER, INC., Sylmar, CA (US)
Filed on Apr. 18, 2019, as Appl. No. 16/388,625.
Prior Publication US 2020/0330771 A1, Oct. 22, 2020
Int. Cl. A61N 1/37 (2006.01); A61B 5/00 (2006.01); A61N 1/05 (2006.01)
CPC A61N 1/3712 (2013.01) [A61B 5/686 (2013.01); A61N 1/0504 (2013.01); A61N 1/056 (2013.01); A61N 1/3702 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A system for monitoring capture within a distributed implantable system comprising:
a first implantable medical device (IMD) comprising:
an electrode configured to be located within a local chamber of a heart; and
circuitry configured to deliver one or more pacing pulses, through the electrode, to the local chamber in connection with an arrhythmia therapy;
a non-transvenous lead having one or more subcutaneous electrodes configured to be located in a non-transvenous parasternal region; and
a second IMD, wherein the second IMD is a subcutaneous IMD (SIMD), the SIMD comprising:
at least one processor;
sensing circuitry coupled to the one or more subcutaneous electrodes of the non-transvenous lead; and
a memory coupled to the at least one processor, the memory configured to store program instructions, wherein the program instructions are executable by the at least one processor to:
utilize the sensing circuitry to collect far field (FF) evoked cardiac signals following the one or more pacing pulses delivered by the first IMD, the sensing circuitry utilizing a sensing vector that extends between one of:
i) two or more subcutaneous electrodes of the non-transvenous lead or
ii) a housing of the SIMD and the one or more subcutaneous electrodes of the non-transvenous lead;
analyze a first capture indicative characteristic of interest (COI) from the FF evoked cardiac signals to identify a first type of capture; and
analyze a second capture indicative COI from the FF evoked cardiac signals to identify a second type of capture.