Electronic blood pressure monitor

Abstract

An electronic sphygmomanometer is provided, in accordance with pulsating wave information at the time of pressurizing a cuff (1), finishing pressure is measured by a finishing pressure measurement mechanism (16). In the process of decompression, in case that a blood pressure deciding mechanism (13) decides the cuff pressure at the time of the minimum value of blood pressure is lower than the measured finishing pressure, a finishing measurement judging mechanism (14) judges the finish of the measurement and a quick-speed exhausting mechanism (3) exhausts quickly to the cuff (1) at once. In case that the cuff pressure at the time of the minimum value of blood pressure is not lower than the measured finishing pressure, the measurement is continued, and is finished when the cuff pressure is altered to be lower than the measured finishing pressure, then the quick-speed exhausting mechanism (3) exhausts quickly to the cuff (1) at once. Consequently, in the electronic sphygmomanometer, the fluids in the cuff are enabled to exhaust rapidly and quickly after correctively deciding the minimum value of blood pressure, thereby shortening the pressing time on the upper arms.

Description

technical field [0001] The present invention relates to an electronic sphygmomanometer for measuring blood pressure by an oscillometric (Oscillometry) method. Background technique [0002] Figure 7 It is a characteristic diagram showing an example of fluctuations in cuff (cuff, cuff) internal pressure (hereinafter referred to as cuff pressure) during blood pressure measurement. like Figure 7 As shown, when the blood pressure is measured by the oscillometric method, during the decompression process of slowly reducing the cuff pressure, it appears as a pulsation as a change in the cuff pressure. Based on the measurement result of this pulsation, the maximum blood pressure value and the minimum blood pressure value are determined. [0003] Figure 8 is to use the horizontal axis as the time axis to represent the basis Figure 7 In the characteristic diagram shown, a pulse wave (pulse wave) component is extracted by subtracting a decrease in cuff pressure from a change in cu...

AI Technical Summary

Problems solved by technology

[0009] As mentioned above, in the conventional electronic sphygmomanometer, the two-mountain countermeasure has been studied, and since the measurement is continued after the minimum blood pressure value is determined until the predetermined cuff pressure is reached, there is a problem that the time for compressing the upper arm, etc. is prolonged.

In particular, when the user is hypertensive, the measurement will continue for a long time after the lowest blood pressure value is determined, so there is a problem that the upper arm is pressed for a long time.

[0010] Also, in the electronic sphygmomanometer disclosed in Patent Document 1, there is a cuff that adds a predetermined value to the cuff pressure when the maximum pulsation wave occurs from the cuff pressure point obtained by subtracting the predetermined value from the estimated maximum blood pressure value. When there is a real minimum blood pressure value during the rapid decompression up to the pressure point, the real minimum blood pressure value cannot be obtained

Furthermore, in the electronic sphygmomanometer disclosed in Patent Document 1, during the decompression process, it is extremely important to correctly adjust the opening of the exhaust valve of the cuff according to the mode of decompression from slow decompression to rapid decompression and then back to slow decompression. difficult

Therefore, the electronic sphygmomanometer disclosed in Patent Document 1 lacks realizability

Images