Pulse wave detecting method and device by means of cardiac symbol signal

A detection device, pulse wave technology, applied in applications, measurement of pulse rate/heart rate, diagnostic recording/measurement, etc., can solve the problems of pulse wave baseline and amplitude influence, difficulty in ensuring accuracy, unexpected arm shaking, etc. Interference immunity and accuracy, the effect of improving accuracy, reducing chance

Active Publication Date: 2007-06-27
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

In the traditional measurement method, the measurement result is easily affected by various interferences such as arm movement, resulting in no measurement results or even large deviations.
[0003] Because the cuff needs to be tied to the patient's arm and inflated to a certain pressure during the measurement, the patient will inevitably feel oppression, tremors will occur unconsciously, or the patient's condition leads to muscle tremors, etc., or during surgery During the process or other situations, the patient's arm is touched by the outside world and shakes unexpectedly. In these cases, the baseline and amplitude of the pulse wave will be affected. The traditional method of finding the pulse wave amplitude is difficult to guarantee its accuracy. Increased probability of identifying wrong pulse wave amplitude

Method used

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  • Pulse wave detecting method and device by means of cardiac symbol signal
  • Pulse wave detecting method and device by means of cardiac symbol signal
  • Pulse wave detecting method and device by means of cardiac symbol signal

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Embodiment Construction

[0041]As shown in FIG. 1 , the cuff is used to be worn on a prescribed part of the body to be measured when measuring blood pressure, usually on the arm, and can also be worn on the wrist. The air pressure control module is connected with the cuff, and the air pressure control module includes a motor, an inflation unit, a valve and a logic control unit, and the motor, the inflation unit, the cuff, and the valve form an inflation passage, which is controlled by the logic control unit. First close the valve, power on the motor, inflate the cuff to the specified pressure, then stop inflation, open the valve, and control the deflation valve to gradually deflate the cuff, such as step deflation. The pressure detection module includes a pressure sensor, an amplifier and an A / D converter. The pressure sensor is placed in the cuff close to the artery. During the deflation process, the pressure sensor detects the pressure in the cuff and converts the pressure into an electrical signal o...

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Abstract

The present invention discloses method and device for detecting pulse wave by means of cardiac symbol signal. Through detecting the temporal interval between the R wave and the pulse wave, obtain reference interval value, locating searched pulse wave amplitude with the reference interval value and obtaining reference pulse wave amplitude under different pressures, the mean pressure, the systolic pressure and the diastolic pressure are calculated by means of the ratio process. Compared with the available method to search pulse wave peak directly in the pulse wave signal, the present invention has raised anti-jamming capacity and raised blood pressure measuring accuracy especially in case of sports and arrhythmia.

Description

【Technical field】 [0001] The invention relates to a pulse wave detection method, in particular to a pulse wave detection method and device which use electrocardiographic signals to guide pulse wave search and enhance anti-interference performance, and an electronic sphygmomanometer including the device. 【Background technique】 [0002] At present, the oscillation method is usually used for non-invasive blood pressure measurement. The measurement process is to inflate the cuff first. When the pressure reaches greater than the systolic blood pressure of the human body, it can be considered that the blood vessel has been completely blocked. At this time, there should be no pressure at the cuff. There is a pulsation of the pulse. Then start to deflate slowly or in steps. When the cuff pressure is lower than the systolic pressure, the blood vessel has been partially connected. At this time, the pulse will gradually increase with the decrease of the cuff pressure. Due to the influe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/02A61B5/024
Inventor 胡刚陶波叶继伦
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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