Heart pacing signal extraction device

Abstract

The invention discloses a heart pacing signal extraction device, which is used for extracting pacing signals through processing body surface signals collected by a body surface collector. The device is characterized in that: an output end of the body surface collector is connected with an input end of the positive electrode of a difference amplifying circuit, an output end of the difference amplifying circuit is connected with an input end of a level comparison circuit, an output end of the level comparison circuit is connected with an input end of a positive-negative level conversion circuit, and an output end of the positive-negative level conversion circuit is connected with an input end of an OR gate. According to the invention, the body surface signals processed by a hardware circuit can be directly output as single positive level pacing pulse signals, and the pulse signals are analyzed by electrocardiograph testing equipment; at the same time, as extraction thresholds of the pacing signals, directly set by a hardware method, are utilized, the sampling accuracy and precision are high; and the signal extraction device is only composed of multiple simple circuits such as the difference amplifying circuit, the level comparison circuit and the like, so that the structure is simple, the cost is low, and the extraction is convenient and easy to implement.

Description

technical field [0001] The invention relates to an electrocardiogram recorder, in particular to a cardiac pacing signal extraction device. Background technique [0002] Cardiac pacemakers have been widely used clinically, and there are many heart patients who wear pacemakers at present. Many existing cardiac examination devices can record and analyze the electrocardiogram containing pacemaker signals, so that doctors can understand the function and use of pacemakers. However, for the detection and recording of pacing signals, at present, the ECG of one or more leads is generally recorded at high sampling points, and then the highest sampling value is retained after other points, and then the pacing signals are identified and confirmed by software analysis methods . This method needs to record a large amount of electrocardiogram data with a high sampling rate, which occupies a lot of system resources and storage resources. Contents of the invention [0003] In order to o...

AI Technical Summary

Problems solved by technology

This method needs to record a large amount of ECG data with a high sampling rate, which takes up a lot of system resources and storage resources.

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