Rate-responsive pacemaker

Details Rate-responsive pacemaker Rate-responsive pacemaker

A - Human Necessities

61

N

326/1.2

A61N 1/365 (2006.01) A61N 1/372 (2006.01)

Patent

CA 1327233

ABSTRACT RATE-RESPONSIVE PACEMAKER The slope and threshold of the rate responsive pacemaker are automatically adjustable to suit the physiological requirements of the user. For threshold adjustment, the user performs a resting level of exertion and the sensor (3) signal is switched (14) to a threshold value generator (15) where its peak value is stored as the threshold value. For slope adjustment, a target pacing rate is supplied to a store (17) by a programmer (13). The user performs a predetermined constant level of exertion. The resulting pacing rate is compared with the stored target rats in a comparator. The slope is adjusted (16) until the rates are equal. The value of slope is then stored (16). The sensor (3) may sense any suitable biological variable.

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