US 11,992,687 B2
System and method for rate modulated cardiac therapy utilizing a temperature sensor
Donald Chin, Palo Alto, CA (US)
Assigned to Pacesetter, Inc., Sylmar, CA (US)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on Aug. 4, 2021, as Appl. No. 17/393,634.
Application 17/393,634 is a continuation of application No. PCT/US2020/023520, filed on Mar. 19, 2020.
Claims priority of provisional application 62/822,295, filed on Mar. 22, 2019.
Prior Publication US 2021/0361945 A1, Nov. 25, 2021
Int. Cl. A61N 1/365 (2006.01); A61N 1/37 (2006.01)
CPC A61N 1/3655 (2013.01) [A61N 1/3704 (2013.01)] 24 Claims
OG exemplary drawing
 
1. For use with an implantable medical system, a method for providing a temperature based rate response for a patient within which the implantable medical system is implanted, the method comprising:
sensing a blood temperature signal indicative of a core body temperature of the patient within which the implantable medical system is implanted;
producing a relative temperature signal based on the blood temperature signal;
producing a moving baseline temperature signal based on the relative temperature signal such that the moving baseline temperature signal follows the relative temperature signal during an initial drop in the blood temperature signal that occurs during an onset of activity, and the moving baseline temperature signal decays towards zero during an upswing in the blood temperature signal that follows the initial drop in the blood temperature signal;
producing a proportional response signal based on the relative temperature signal and the moving baseline temperature signal;
producing a sensor indicated rate response signal based on the proportional response signal and a base rate; and
controlling a pacing rate of the implantable medical system based on the sensor indicated rate response signal.