Cardiac pacemaker
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United States of America Patent
Stats
-
Nov 1, 1983
Grant Date -
N/A
app pub date -
Apr 12, 1982
filing date -
Apr 10, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cardiac pacemaker constructed for terminating tachyarrhythmias and including: an atrial electrode implantable in a patient's heart for supplying atrial stimulation pulses thereto and at which a pulse appears in response to each atrial contraction; a ventricular electrode implantable in the patient's heart for supplying ventricular stimulation pulses thereto, and at which a pulse appears in response to each ventricular contraction; separately switchable control paths connected to each electrode for causing one electrode to produce a stimulation pulse at a given time after the occurrence of a pulse on the other electrode; a first time delay unit connected to be actuated by signals derived from the heart behavior for supplying a stimulating pulse to the ventricular electrode at a time after the occurrence of a pulse on the atrial electrode, which is shorter than the physiological atrial-ventricular transfer time; and a second time delay unit connected to be actuated by signals derived from the heart behavior for supplying a stimulating pulse to the atrial electrode at a time after the occurrence of a pulse on the ventricular electrode which is shorter than a selected physiological period in the operation of the heart.
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