Cardiac pacemaker

Details Cardiac pacemaker Cardiac pacemaker

A - Human Necessities

61

N

326/1.4

A61N 1/36 (2006.01) A61N 1/362 (2006.01) A61N 1/37 (2006.01)

Patent

CA 1095993

CARDIAC PACEMAKER ABSTRACT OF THE DISCLOSURE Apparatus for indicating end of battery life in a cardiac pacemaker. A battery voltage monitoring circuit provides an indication of battery voltage drop below a predetermined level. A counter circuit and decode logic respond to the voltage drop indication to block a portion of a predetermined number of the gener- ated pacing pulses from the heart to induce a benign arrhythmia in the heart thereby indicating end of battery life. In another embodiment a plurality of voltage sen- sors indicate progressive decreases in battery voltage and are connected with decode logic to block an increa- sing number of pacing pulses to indicate worsening battery condition.

289036

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