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Electronic sphygmometer

An electronic sphygmomanometer and pressure technology, applied in vascular assessment, cardiac catheterization, etc., can solve the problems of low decompression speed, inability to maintain decompression speed, and time-consuming, and achieve the effect of extending the measurement time.

Active Publication Date: 2012-07-25
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the control device disclosed in the above-mentioned Patent Document 1, when the pulse rate is small and the pulse wave period is long, the interval between the change of the opening degree of the exhaust valve and the time before the next change becomes long, and during this period, the opening degree of the exhaust valve The opening degree is fixed, so the decompression speed will be lower than the desired speed until the next change of the exhaust valve opening degree
In other words, when the pulse rate is small, there is a problem that the decompression speed cannot be maintained at the desired speed with high precision.
In addition, in the sphygmomanometer disclosed in the above-mentioned Patent Document 2, since the exhaust volume per pulse beat is fixed, when the pulse rate is small, there is a problem that decompression is performed until the blood pressure value is determined. takes time

Method used

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Embodiment approach 1

[0036] figure 1 This is a block diagram showing the overall configuration of the electronic sphygmomanometer according to Embodiment 1 of the present invention. like figure 1 As shown, the electronic sphygmomanometer includes: a cuff 1 , a pressure detection mechanism 2 , a pressurization mechanism 3 , a decompression mechanism 4 , a display mechanism 5 , an operation mechanism 6 and a microcomputer (hereinafter referred to as a microcomputer) 7 . The cuff 1 is connected to the pressure detection mechanism 2 , the pressurization mechanism 3 , and the decompression mechanism 4 through the catheter 8 .

[0037] The pressure detection mechanism 2 detects the pressure in the cuff 1 . The pressure detection mechanism 2 is constituted by, for example, a pressure sensor. The pressurizing mechanism 3 pressurizes the cuff 1 according to the output signal of the microcomputer 7 . The pressurizing mechanism 3 is composed of, for example, a pump that sends a fluid such as air (hereina...

Embodiment approach 2

[0068] Figure 9 This is a block diagram showing the overall configuration of the electronic sphygmomanometer according to Embodiment 2 of the present invention. like Figure 9 As shown, the electronic sphygmomanometer includes: a cuff 1 , a pressure detection mechanism 2 , a pressurization mechanism 3 , a rapid exhaust mechanism 9 , a display mechanism 5 , an operating mechanism 6 and a microcomputer (hereinafter referred to as a microcomputer) 7 . The cuff 1 is connected to the pressure detection mechanism 2 , the pressurization mechanism 3 , and the rapid exhaust mechanism 9 through the catheter 8 . In the second embodiment, the blood pressure is measured while the cuff 1 is being pressurized.

[0069] The rapid exhaust mechanism 9 rapidly exhausts the air and the like in the cuff 1 according to the output signal of the microcomputer 10 when the blood pressure measurement is completed. The rapid exhaust mechanism 9 is constituted by, for example, an exhaust valve. The p...

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Abstract

The present invention discloses a controlled value correction tables (24) defining the relations among the pulse rate, the difference between the pressure reducing rate of the cuff and the target pressure reducing rate, and the correction of the controlled value for controlling the opening of the exhaust valve of pressure reducing means (4) are made according to the pulse rate. Pressure detectingmeans (2) detects the pressure of the cuff. Pressure reducing rate calculating means (21) determines the difference of the pressure reducing rate. Pulse rate calculating means (14) calculates the pulse rate. Controlled value correction table selecting means (23) selects a controlled value correction table (24) depending on the pulse rate. Controlled value correction determining means (25) determines the correction of the controlled value according to the difference of the pressure reducing rate by referencing the selected controlled value correction table (24). Controlled value correcting means (26) adds the correction to the current controlled value to use the sum as a new controlled value.

Description

technical field [0001] The invention relates to an electronic sphygmomanometer, in particular to an electronic sphygmomanometer for measuring blood pressure while controlling the pressure in the cuff. Background technique [0002] There is a method of measuring blood pressure in an electronic sphygmomanometer. The blood pressure is measured while increasing the pressure in the cuff (hereinafter referred to as the cuff pressure) to a pressure sufficiently higher than the maximum blood pressure, and then gradually lowering it. In order to make the decompression speed of the cuff a desired speed, the electronic sphygmomanometer of this type adjusts the opening degree of the exhaust valve connected to the cuff during the decompression process to adjust the exhaust volume. The air exhaust volume in the cuff, when the opening of the exhaust valve is fixed, the greater the pressure difference between the inside and outside of the cuff, the greater the pressure difference between th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0225
CPCA61B5/02141A61B5/022
Inventor 伊藤清中西孝
Owner CITIZEN WATCH CO LTD