US 11,951,319 B2
Systems and methods for applying anti-tachycardia pacing using subcutaneous implantable cardioverter-defibrillators
Gene A. Bornzin, Simi Valley, CA (US); Xiaoyi Min, Simi Valley, CA (US); Wenwen Li, Stevenson Ranch, CA (US); Stuart Rosenberg, Castaic, CA (US); Kyungmoo Ryu, Palmdale, CA (US); Alexander Bornzin, Simi Valley, CA (US); Leyla Sabet, Los Angeles, CA (US); Shubha Asopa, Valencia, CA (US); and Xing Pei, Thousand Oaks, CA (US)
Assigned to Pacesetter, Inc., Sylmar (CA)
Filed by PACESETTER, INC., Sylmar, CA (US)
Filed on Aug. 7, 2018, as Appl. No. 16/057,605.
Prior Publication US 2020/0046991 A1, Feb. 13, 2020
Int. Cl. A61N 1/39 (2006.01); A61N 1/05 (2006.01); A61N 1/362 (2006.01); A61N 1/375 (2006.01)
CPC A61N 1/39622 (2017.08) [A61N 1/0587 (2013.01); A61N 1/3622 (2013.01); A61N 1/3756 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A subcutaneous implantable cardioverter-defibrillator (SICD) comprising:
one or more leads configured to be implanted in a subcutaneous region of a subject, the one or more leads including multiple electrodes;
a case forming one of the multiple electrodes;
sensing circuitry; and
a controller configured to:
apply anti-tachycardia pacing (ATP) therapy to the subject via a pacing combination of electrodes at a first time, the pacing combination of electrodes comprising two or more of the multiple electrodes;
connect the sensing circuitry to a first sensing combination of electrodes, the first sensing combination of electrodes comprising two or more of the multiple electrodes;
sense, via the first sensing combination of electrodes, a first paced evoked response that is responsive to the ATP therapy applied at the first time;
apply anti-tachycardia pacing (ATP) therapy to the subject via a same or different pacing combination of electrodes at a second time;
connect the sensing circuitry to a second sensing combination of electrodes, the second sensing combination of electrodes comprising two or more of the multiple electrodes;
sense, via the second sensing combination of electrodes, a second paced evoked response that is responsive to the ATP therapy applied at the second time;
determine sizes of the first and second paced evoked responses; and
select one of the first sensing combination of electrodes or the second sensing combination of electrodes to use for subsequent evoked response detection based on the sizes of the first and second paced evoked responses.