Pressure protection method and pressure protection apparatus used in non-invasive blood pressure measurement process

A technology for measuring process and blood pressure signal, which is applied in the field of biomedical signal processing, can solve the problems of reducing the effectiveness of measurement and not considering it, and achieve the effect of improving the effectiveness of measurement, effective protection and high flexibility

Active Publication Date: 2012-07-18
EDAN INSTR
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Problems solved by technology

Both of the above two methods can play a protective role, but in the first method, when measuring a patient with high blood pressure, if the pressure temporarily exceeds the pressure protection point due to the patient's movement or other interference, the non-invasive blood pressure device

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  • Pressure protection method and pressure protection apparatus used in non-invasive blood pressure measurement process
  • Pressure protection method and pressure protection apparatus used in non-invasive blood pressure measurement process
  • Pressure protection method and pressure protection apparatus used in non-invasive blood pressure measurement process

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[0068] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0069] According to the isothermal process of thermodynamics, it can be known that when the pressure increases, expansion occurs to do external work. The corresponding relationship between work and time is energy. Doing the same work externally for different durations will produce different energy. In the measurement of non-invasive blood pressure, the external work of inflation is manifested as the cuff inflates and squeezes the patient. The greater the pressure, the more external work, that is, the more severe the squeezing of the patient. The longer the time, the greater the energy produc...

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Abstract

The invention belongs to the field of biomedical signal processing, and particularly relates to a pressure protection method and a pressure protection apparatus used in the non-invasive blood pressure measurement process. Energy value of pressure generated in a cuff serves as a reference for pressure protection so that different types of patients can be protected. By the pressure protection method, measurement effectiveness of the non-invasive blood measurement device can be improved effectively, and harm to patients due to energy variation caused by pressure difference can be considered. The pressure protection method has the advantages of higher flexibility and more effective protection and higher safety in measurement.

Description

technical field [0001] The invention belongs to the field of biomedical signal processing, in particular to a pressure protection method and device used in the process of measuring non-invasive blood pressure signals. Background technique [0002] Most noninvasive blood pressure measurements use the oscillation method. This method also requires blocking the arterial blood flow with a cuff like the traditional "Krotkoff sound method". However, in the deflation process, instead of detecting Korotkoff sounds, the pressure sensor detects the oscillation wave signal of the gas in the sleeve. These oscillating waves originate from the vibration of the arterial vessel wall. This oscillatory wave signal has a certain functional relationship with the arterial wall systolic pressure, diastolic pressure, and mean pressure. After the oscillatory wave signal is amplified and filtered, the envelope is detected, and then the corresponding relationship between the envelope and the systol...

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Application Information

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IPC IPC(8): A61B5/0225
Inventor 傅楚楚谢祺秦钊
Owner EDAN INSTR
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