Patent ID: 6366810
Filing Date: 2002-04-02
Classification: A61N

Abstract:
An implantable medical device for providing dual chamber pacing to a patient's heart, comprising:at least one sense terminal that receives signals representative of atrial and ventricular sensed events; pacing circuitry that generates atrial and ventricular pacing pulses in response to pacing commands; a common memory that stores data representative of atrial and ventricular events; at least one common timer; a hardware state machine connected to the at least one sense terminal, the pacing circuitry, the common memory and the at least one common timer, that generates the pacing commands in response to timeouts of the at least one common timer and that causes data representative of atrial and ventricular sensed events and atrial and ventricular paced events associated with the pacing commands to be stored in the common memory; and a programmed microprocessor connected to the common memory and the at least one common timer, that evaluates the data representative of the atrial and ventricular sensed and pacing events stored in the common memory and loads the at least one common timer with escape interval values representative of a period during which a next pacing event is expected to occur.