Positive pacing pulse generation circuit applied to cardiac pacemaker

Abstract

The invention relates to a positive pacing pulse generation circuit applied to a cardiac pacemaker. A charge-discharge loop of each capacitor is changed so as to avoid negative voltage appearing in the circuit, load and design difficulty of a peripheral driving circuit are lowered highly, and integration of the pacemaker pulse circuit is realized; the circuit providing bipolar pacing of the atrium and the ventricle can be obtained by merging two ventricular pacing circuits, a first off-chip capacitor is reused, the number of the off-chip capacitors is reduced, and integration is improved; few types of devices, but only resistors and MOS (metal oxide semiconductor) transistors are used in the circuit; resource occupation of the pacing pulse circuit in the cardiac pacemaker is lowered, and cost of the cardiac pacemaker is saved.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and in particular relates to a positive pacing pulse generating circuit applied to a cardiac pacemaker. Background technique [0002] With the improvement of people's health concepts and the rapid development of medical conditions, integrated circuit technology combined with biomedicine is more and more widely used, and cardiac pacemakers are a typical example. Among them, the pacing pulse generation circuit is the core circuit in various cardiac pacemakers (single-chamber monopolar, dual-chamber monopolar, and dual-chamber bipolar). The cardiac stimulation signal can be automatically adjusted with multiple levels of stimulation cycle, stimulation pulse width and stimulation amplitude according to the situation. With the increasing popularity of cardiac pacemakers, efficient and integrated pacing pulse generation circuits are essential. [0003] Pacing pulses in a cardiac pacemaker ...

AI Technical Summary

Problems solved by technology

For the pacing of the atrium, ventricle 1, and ventricle 2, three capacitors are required to charge and discharge, and there are many peripheral devices, which increases the design complexity and production cost.

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