An Implantable heart stimulation device, a system including such a device and use of the system

摘要

The invention concerns an implantable bi-ventricular heart stimulating device (10) including a control circuit (14) with first (18) and second (19) pacing means and first (16) and second (17) sensing means. The device operates with time cycles corresponding to normal heart cycles. The control circuit (14) determines: a) whether a signal typical of an evoked response to a pacing pulse delivered by said first pacing means (18) is sensed within a first time interval (ER1), and b) whether a signal typical for an R-wave (TR1) transferred from said second ventricle (2V), or from some other part of the heart, to said first ventricle (1V) is detected within a first time window (RW1). The operation of the device (10) depends on whether the conditions in a) and b) are fulfilled. The invention also concerns a system including such a device (10) as well as a use of this system.