Back to results
US 6,272,381 B1Granted
Rate-responsive pacemaker with closed-loop control
AssigneePacesetter, Inc.
InventorsFrancis J. Callaghan, William Vollmann, Robert A. Malkin
Life of this patent
Estimating the term…
Abstract
A rate-responsive pacemaker which is provided with a closed-loop control system whose rate control parameter is the depolarization gradient. Any difference between the measured value of the rate control parameter and a target value is used to change the pacing rate in a direction which tends to minimize the difference. To calibrate the system for long-term changes due to drugs and the like, the target value is changed in each measurement cycle in accordance with prescribed rules.
Claims13
A rate-responsive pacemaker comprising
- means for generating pacing pulses at a pacing rate,
- means for ascertaining the value of a rate control parameter “RCP”,
- closed-loop control means for adjusting said pacing rate in accordance with the value of said RCP, and
- means for causing said closed-loop control means to self-adapt to changes in the value of said RCP which are due to factors other than stress, exercise and heart rate.
1 more element
Dependencies are inferred from the claim text.