Patent ID: 6269268
Filing Date: 2001-07-31
Classification: A61N

Abstract:
A rate-responsive pacemaker comprising means for periodically ascertaining the value of a rate control parameter ""RCP"" to obtain a measured rate control parameter ""MRCP"",said RCP being such that a measured value thereof is changed in one direction by increases in stress/exercise while the heart rate is constant and in an opposite direction by increases in heart rate while stress/exercise related load on the heart is constant,means for generating pacing pulses at a pacing rate,means for deriving a target value ""target"" which is indicative of changes in said MRCP due to non-stress/exercise and non-heart rate factors, andmeans responsive to a change in the difference between MRCP and target for adjusting said pacing rate in a direction which tends to return said difference to its pre-change value.