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Novel household electrocardiograph

An electrocardiogram machine, home-use technology, applied in the field of medical instruments, can solve problems such as single output mode, complex circuit structure, and difficult debugging, and achieve the effect of multiple output modes, good craftsmanship, and convenient measurement and observation

Inactive Publication Date: 2007-08-22
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common defects of the above designs are complex circuit structure, difficult debugging, poor workmanship, single output mode, and low cost performance

Method used

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  • Novel household electrocardiograph

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] As shown in Figure 1, the electrocardiographic signal of the human body is picked up by the electrode 1, and is sent to the input protection circuit 3 through the lead wire. The input protection circuit 3 prevents the circuit from being damaged by electrostatic high voltage and defibrillation high voltage, and the parallel differential amplifier 4 with common mode drive will After the signal is buffered and amplified, it is input to the Σ-Δ analog-to-digital converter 5 .

[0020] Parallel differential amplifier 4 with common mode drive is composed of operational amplifiers A1 and A2 to form a parallel differential amplifier, two resistors R1 and R2 with the same resistance value and operational amplifier A3 form a common mode signal extraction drive circuit, and the common mode signal pair is taken out The common terminal of the differential high-pass filter (respectively by C1 and R3, C2 and R4) is driven, which can effectively avoid the common-mode variation caused by...

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Abstract

Disclosed is a new household electro-cardiograph, which uses micro processor chip of integrated high resolving power analog to digital converter 4 and combines with parallel differential amplifier which has common mode drive and differential input analog to digital converter which has high common mode suppression ratio, signal test circuit has high, with high performance and lost cost, without debugging. Besides, it also uses high resolving power analog to digital converter, digital-to-analog converter, communication contact and multiple high integration level micro processor with universal I / O contact, to process and analyze the signal collected; it fully uses the above ones of the micro processor to form multifunctional communication contact, which can input and display electrocardiogram in the ways such as liquid crystal display, printer, telephone, modem, PC and formal electro-cardiograph 16, so that the user can measure and watch the signal whenever possible and transmit electrocardiogram to the doctor or hospital. The invention has simple structure, no need for debugging, outstanding performance, low cost with a great number of ways for output of transmit electrocardiogram.

Description

technical field [0001] The invention relates to a medical instrument, in particular to an electrocardiograph applied to a family. Background technique [0002] Electrocardiographic examination has important application value in medical research and clinical diagnosis. Due to the sporadic nature of heart attack, especially in the early stage of heart disease, capturing abnormal ECG signals is of great significance for diagnosis and treatment, thus attracting many scholars and engineering technicians to make it easier for people to detect at home miniature ECG machine for home use. For example, the utility model patent designed by Yu Zhanhe (portable dynamic heart alarm, patent No. 94245445.6), the utility model patent designed by Shen Jianmin (portable ECG monitor, patent No. 03210019.1), and the utility model patent designed by Baijing (based on digital signal Portable ECG monitor with processor, application number 02209381.8), a utility model patent designed by Zhu Yunhui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0402A61B5/0428A61B5/308
Inventor 李刚林凌
Owner TIANJIN UNIV