Pacemaker with determination of the dependency of cardiac...

Details Pacemaker with determination of the dependency of cardiac... Pacemaker with determination of the dependency of cardiac...

2005-08-30

2005-08-30

Schaetzle, Kennedy (Department: 3762)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

C607S023000, C607S009000, C607S022000, C600S526000, C600S513000

Reexamination Certificate

active

06937902

ABSTRACT:
A cardiac pacemaker has a pulse generator for delivering stimulation pulses to a patient's heart and a control unit for controlling the delivery of the stimulation pulses from the pulse generator. The control unit includes an altering unit for altering the AV-delay value from a predetermined first AV-delay value to a predetermined second AV-delay value, and back to the first AV-delay value. A sensor measures a parameter related to cardiac output of the patient, the sensor measuring this parameter in a time window within a time of operation with the first AV-delay value, and in a time window within the time of operation with said second AV-delay value, and in a time window within the time of operation after the return back to the first AV-delay value. A calculation unit calculates respective average values of the parameter during each of the time windows, and a determining unit determines from these average values which of the AV-delay values results in a higher cardiac output.

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patent: 5814077 (1998-09-01), Sholder et al.
patent: 5891176 (1999-04-01), Bornzin

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