US 12,144,984 B2
Diagnostic circuitry for monitoring and mitigating electromagnetic interference (EMI) in an implantable pulse generator
Steven Boor, Plano, TX (US); and Daran DeShazo, Lewisville, TX (US)
Assigned to Advanced Neuromodulation Systems, Inc., Plano, TX (US)
Filed by ADVANCED NEUROMODULATION SYSTEMS, INC., Plano, TX (US)
Filed on Jul. 16, 2020, as Appl. No. 16/931,030.
Claims priority of provisional application 62/984,607, filed on Mar. 3, 2020.
Prior Publication US 2021/0275805 A1, Sep. 9, 2021
Int. Cl. A61N 1/08 (2006.01); A61B 18/00 (2006.01); A61M 31/00 (2006.01); A61N 1/36 (2006.01); A61N 1/362 (2006.01); A61N 1/37 (2006.01); A61N 1/39 (2006.01); A61N 2/00 (2006.01); H02M 3/07 (2006.01); H03K 5/1252 (2006.01); H03K 5/24 (2006.01)
CPC A61N 1/086 (2017.08) [A61B 18/00 (2013.01); A61N 1/36038 (2017.08); A61N 1/36053 (2013.01); A61N 1/36125 (2013.01); A61N 1/36153 (2013.01); A61N 1/3629 (2017.08); A61N 1/3718 (2013.01); A61N 1/39622 (2017.08); A61N 2/002 (2013.01); A61N 2/006 (2013.01); H02M 3/07 (2013.01); H03K 5/1252 (2013.01); H03K 5/24 (2013.01); A61B 2018/00577 (2013.01); A61M 31/002 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of mitigating electromagnetic interference (EMI) in an implantable medical device (IMO) having a pulse generator configured to supply stimulation to tissue of a patient, the method comprising:
monitoring an interference voltage sensed at a Kelvin connection node associated with an implantable lead system of the IMO; and
generating one or more control signals to adjust a common-mode voltage reference output by a charge pump voltage source of the IMO depending on a difference between the common-mode voltage reference and the interference voltage sensed at the Kelvin connection node, wherein the one or more control signals comprise at least a first control signal generated responsive to determining that the interference voltage is greater than the common-mode voltage reference by a first threshold, the first control signal comprising a control signal operative to decrease the common-mode voltage reference output of the charge pump voltage source.