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Electronic device for measuring blood-pressure

A blood pressure measuring device and electronic technology, which are applied in the fields of blood vessel evaluation, electrical digital data processing, special data processing applications, etc., can solve the problem that the overpressure protection circuit cannot set two or more overpressure points, and the pulse wave signal detection circuit is complicated. , poor adaptability of pressure sensors, etc., to achieve the effect of improving the ability of common mode rejection ratio, accurate setting, and enhancing safety assurance

Inactive Publication Date: 2004-07-21
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] 1. The pressure and pulse wave signal detection circuit is relatively complex, and there is no measurement gain control
[0004] 2. The back-up overpressure protection circuit cannot have accurate two or more overpressure point settings, and the adaptability to the pressure sensor is not good

Method used

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  • Electronic device for measuring blood-pressure
  • Electronic device for measuring blood-pressure
  • Electronic device for measuring blood-pressure

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0028] see figure 1 , Fig. 4, the circuit structure of this inventive device mainly comprises main parts such as cuff pressure, pulse signal, signal detection circuit, back-up overpressure protection circuit, air pump and deflation valve control circuit, analog-to-digital conversion and digital system circuit, The specific signal pathway: the cuff [1] is connected to the pressure sensors [2] and [9] respectively, and the main channel is that the output of the pressure sensor [2] is connected to the instrument amplifier [3] to amplify the static cuff pressure. One of the output terminals of the instrumentation amplifier [3] is directly connected to the analog-to-digital converter [8] through appropriate voltage division and filtering to realize the data acquisition of the static cuff pressure, while the other pulse wave from the output terminal of the instrumentati...

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Abstract

An electric blood pressure measurer without wound based on the algorithm for processing the pulse wave signals of inflatable cuff is disclosed. Its measuring steps include invoking the blood pressure measuring program module, running it, inflating the cuff to a certain pressure, releasing air by predefined steps, synchronously detecting the pressure of cuff and pulse wave for each step, monitoring and judging the time and pressure variation, determining if the measurement is stopped, processing the recorded pulse waves to obtain average pressure, and calculating systolic pressure and diastolic pressure.

Description

technical field [0001] The invention relates to an electronic non-invasive blood pressure measuring device based on a cuff tied on an arm, and uses an air pump, a deflation valve, a pressure sensor, corresponding electronic amplification and digital circuits, and a pulse wave signal processing algorithm to complete blood pressure measurement. Background technique [0002] The non-invasive blood pressure measurement methods all adopt the oscillation method based on the cuff pulse wave. The non-invasive measurement methods of human blood pressure mainly include the auscultation method using Korotkoff sounds (abbreviated as Korotkoff sound method) and the proportional coefficient method using cuff oscillation wave (abbreviated as oscillation method). The Korotkoff sound method is that experienced medical personnel use medical stethoscopes, mercury manometers and cuffs to inflate / deflate the airbag. Inflate the cuff to increase the pressure until the blood flow in the arm is bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/021G06F17/00
Inventor 叶继伦黄晓东陶波余深衍
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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