CN211962029U

CN211962029U - Intelligent pressure relief system based on blood pressure measurement

Info

Publication number: CN211962029U
Application number: CN201922195250.6U
Authority: CN
Inventors: 姚祥俊; 姚雨君
Original assignee: Yunhong Innovation Information Technology Wuhan Co ltd
Current assignee: Yunhong Innovation Information Technology Wuhan Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-11-20
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses an intelligence pressure release system based on blood pressure measurement, this system include radial artery fluid pressure vibration sensor (1), cross valve (2), with brachial artery fluid pressure vibration sensor (3) and three-way valve (4) that cross valve (2) are connected, connect respectively in closed loop servo control release valve (6) of brachial artery fluid pressure sensor (5) at three-way valve (4) other both ends, closed loop servo control release valve (6) pass through cross valve (2) with the sleeve area is connected in three-way valve (4). The utility model provides an intelligence pressure relief system can control the initial aperture of the air throttle of the flow valve that loses heart according to the size of brachial artery locking pressure, has solved current product effectively, and is disappointing at the high-pressure area fast, and low-pressure area pressure release speed is too slow problem again.

Description

Intelligent pressure relief system based on blood pressure measurement

Technical Field

The utility model belongs to the technical field of medical science detects, specific theory indicates an intelligence pressure release system based on blood pressure measurement.

Background

The blood pressure measuring instrument is mainly used for measuring the blood pressure of a human body and is generally applied to the prevention and treatment of blood pressure abnormity. The accuracy of blood pressure measurements is directly related to prophylactic and therapeutic effects, such as: the blood pressure measurement is inaccurate, and the effective basis is lost for treatment; the measured data are incorrect, and not only can hypertension not be treated, but also wrong medicine taking and wrong treatment can be caused, and even health and life are endangered. Whether the blood pressure can be measured accurately is the key to the accuracy and stability of the blood pressure measuring instrument.

Among the prior art, the mechanical relief valve that many sphygmomanometer adopted, its design principle reaches quick pressure release, however, if the speed of disappointing of cuff gasbag is too fast, then easily influence blood pressure measurement's accuracy, cause the gasbag high-pressure area to lose heart too fast, make hypertension crowd's systolic pressure measuring error huge, and gasbag low-pressure area loses heart too slowly again, has not only prolonged check-out time, has increased human uncomfortable sense moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned problem, provide a simple structure, realize at the uniform velocity pressure release's intelligent pressure release system based on blood pressure measurement through control release valve aperture.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides an intelligence pressure release system based on blood pressure measurement, include radial artery fluid pressure vibration sensor, cross valve, with brachial artery fluid pressure vibration sensor and the three-way valve that the cross valve is connected, connect respectively in the closed loop servo control of the brachial artery fluid pressure sensor at the other both ends of three-way valve loses heart valve, closed loop servo control loses heart valve and passes through the cross valve with the three-way valve is connected in the sleeve area.

Further, the brachial artery fluid pressure vibration sensor adopts a pressure vibration sensor; the brachial artery fluid pressure sensor adopts a pressure sensor.

Further, radial artery fluid pressure vibration sensor includes piezoelectric sensor, sealed resonant cavity and silica gel filler layer, the one side on silica gel filler layer does radial artery fluid pressure vibration sensor presses close to the one side that detects the department.

Furthermore, one side of the sealed resonant cavity, which is opposite to the silica gel filler layer, is of an arc-shaped structure.

Furthermore, two sides in the sealed resonant cavity are respectively provided with an auxiliary cavity separated from the sealed resonant cavity.

Further, closed loop servo control release valve includes that one end is provided with the shell body that proportional valve gas outlet, the other end were provided with the proportional valve air inlet, set up in just possess the proportional valve main part of proportional valve wire in the shell body.

Further, a silica gel layer is filled between the proportional valve main body and the outer shell.

Further, a silica gel layer is completely filled in a gap at the upper part between the proportional valve main body and the outer shell; and a silica gel layer is partially filled in a gap at the lower part between the proportional valve main body and the outer shell.

Further, the proportional valve body adopts a miniature proportional valve.

Compared with the prior art, the utility model, still have following advantage and beneficial effect:

(1) the utility model provides an intelligence pressure relief system can control the initial aperture of the air throttle of the flow valve that loses heart according to the size of brachial artery locking pressure, has solved current product effectively, and is disappointing at the high-pressure area fast, and low-pressure area pressure release speed is too slow problem again.

(2) The utility model discloses a control flow valve that loses heart's the initial aperture of air throttle and realize between any pressure interval, no matter the gaseous volume size of gasbag, the speed that loses heart all keeps even decline, has guaranteed blood pressure measurement result's accuracy from this.

Drawings

Fig. 1 is a schematic view of the structural principle of the present invention.

Fig. 2 is a schematic diagram of the structural principle of the middle radial artery fluid pressure vibration sensor of the present invention.

Fig. 3 is the schematic diagram of the structural principle of the middle closed loop servo control air release valve of the utility model.

Description of reference numerals: the device comprises a 1-radial artery fluid pressure vibration sensor, a 2-four-way valve, a 3-brachial artery fluid pressure vibration sensor, a 4-three-way valve, a 5-brachial artery fluid pressure sensor, a 6-closed loop servo control air escape valve, 7-cuff air waves, 11-piezoelectric sensors, 12-sealed resonant cavities, 13-silica gel filler layers, 14-auxiliary cavities, 15-piezoelectric sensor leads, 61-proportional valve air outlets, 62-proportional valve air inlets, 63-outer shells, 64-proportional valve main bodies, 65-proportional valve leads and 66-silica gel layers.

Detailed Description

Examples

Whether the blood pressure is measured accurately or not is quite related to the exhaust speed, the more uniform and constant the air leakage flow between adjacent pulses is in the air leakage process, the more accurate and stable the measurement result is, and the problems of too high air leakage speed in a high-pressure area and too low air leakage speed in a low-pressure area are easily caused by the mechanical pressure leakage method in the prior art. As shown in fig. 1 to 3, the present embodiment provides an intelligent pressure relief system, which adopts a technical means of controlling an initial opening of a throttle valve of an air escape flow valve according to a magnitude of brachial artery locking pressure, so as to dynamically adjust a pressure relief speed, and finally achieve an effect of uniform pressure relief. Specifically speaking, the intelligent pressure relief system based on blood pressure measurement comprises a radial artery fluid pressure vibration sensor, a four-way valve, a brachial artery fluid pressure vibration sensor connected with the four-way valve, a three-way valve, and closed-loop servo control air release valves respectively connected with the brachial artery fluid pressure sensors at the other two ends of the three-way valve, wherein the closed-loop servo control air release valves are connected with a cuff through the four-way valve and the three-way valve. Sensor signals, valves and the like are processed by a central processing unit (model: STM32F103ZET6) and relevant control instructions are sent.

During the measurement, radial artery fluid pressure vibration sensor is located the radial artery department of human arm, and radial artery fluid pressure vibration sensor includes piezoelectric sensor, sealed resonant cavity and silica gel filler layer, and the one side on silica gel filler layer is the one side that radial artery fluid pressure vibration sensor pressed close to the detection department, and the silica gel filler layer outside is the arc structure, and the one side on this face for pressing close to the human surface, and it adopts the material to be medical material. The two sides in the sealed resonant cavity are respectively provided with the auxiliary cavities separated from the sealed resonant cavity, one side of the sealed resonant cavity relative to the silica gel filler layer is of an arc structure, and the design of the arc structure can be helpful for a sensor to detect pulse wave signals and improve the detection precision; preferably, the arc of the arc structure is 1.5-2.5, and the arc design is only one embodiment, and those skilled in the art can design other arcs according to the requirement of detection accuracy. In this embodiment, the radial artery fluid pressure vibration sensor is designed to detect a fluid pressure signal at the radial artery in real time, so as to determine the magnitude of the brachial artery locking pressure. The advantages of using signal detection at the radial artery are: (1) the interference is small. The method has the advantages that the interference of an air bag is avoided, the signal quality is greatly improved, the requirements on the quality of the waveform in the detection process are not particularly high, the form amplitude is not required, and only the first pulse wave from the pulse wave of the brachial artery to the radial artery and the delay from the pulse wave of the brachial artery to the pulse wave of the radial artery in a subsequent series need to be detected; (2) the cuff structure is not required to be modified, the cuff structure is simple, and a single tube and a single air bag are suitable for a standardized cuff; (3) the highest lock-up pressure can be estimated; (5) pulse waves are detected at the radial artery, almost no pressure is applied, and the human body has no oppression; (6) the accuracy of the principle: when the probe is detected at the radial artery, the first Korotkoff sound is inevitably generated at the position of the first pulse wave, but the human ear hearing is easily leaked out due to the Korotkoff sound. However, by using the detection technique at the radial artery, the signal can be accurately captured.

The brachial artery fluid pressure vibration sensor adopts a pressure vibration sensor, and is used for acquiring a fluid pressure pulse wave signal of the brachial artery during measurement; the brachial artery fluid pressure sensor adopts a pressure sensor, and is used for acquiring the pressure of the cuff air bag during measurement. When the cuff air bag starts to release pressure, a fluid pressure pulse wave signal of a brachial artery and a fluid pressure pulse wave signal of a radial artery are continuously acquired at the same time when the heart beats, and meanwhile, the conduction time from a brachial artery fluid vibration pressure pulse wave to a radial artery fluid vibration pressure pulse wave is synchronously acquired (through the detected conduction time PWTT from the brachial artery pulse wave to the radial artery pulse wave, the pulse wave conduction speed PWV on the artery wall is calculated according to the PWV which is L/PWTT, wherein L is a brachial artery fluid pressure vibration sensor and radial artery fluid). When the pressure difference detected by the cuff between two pulses is higher than a set value (the set value can be adjusted by a person skilled in the art according to actual conditions), the deflation air flow is reduced, and when the pressure difference detected by the cuff between two pulses is lower than the set value, the deflation air flow is increased, and the relationship is as follows: and S is P (PID parameter) and delta P, wherein S is the opening degree of a throttle valve of the closed-loop servo control air escape valve, delta P is the pressure difference of the cuff air bag between two pulses, the PID parameter is a constant, and P is the current pressure value of the cuff air bag.

Realize the improvement and the reduction of the volume of losing air, realize through the throttle valve aperture of adjusting the snuffle valve, adopt closed-loop servo control snuffle valve as the snuffle valve in this embodiment, its concrete structure as follows: the proportional valve comprises an outer shell with one end provided with a proportional valve air outlet and the other end provided with a proportional valve air inlet, and a proportional valve main body which is arranged in the outer shell and is provided with a proportional valve wire. Wherein, the proportional valve main part adopts miniature proportional valve, miniature proportional valve and the shell between have certain clearance, in order to ensure miniature proportional valve's steadiness, this embodiment is filled with the silica gel layer between proportional valve main part and shell body. Preferably, a silica gel layer is filled in a gap at the upper part between the proportional valve main body and the outer shell; and a silica gel layer is partially filled in a gap at the lower part between the proportional valve main body and the outer shell. Closed loop servo control release valve can be according to the aperture of actual pressure release condition adjustment proportional valve, realizes the dynamic adjustment of pressure release process to keep pressure release speed for at the uniform velocity pressure release, thereby solved effectively among the prior art mechanical pressure release's pressure release speed inhomogeneous, at the high-pressure region speed of disappointing too fast, low-pressure region pressure release speed is too slow again, and then influences measuring result's problem.

As described above, the utility model discloses alright fine realization. The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an intelligence pressure release system based on blood pressure measurement, its characterized in that, including radial artery fluid pressure vibration sensor (1), cross valve (2), with brachial artery fluid pressure vibration sensor (3) and three-way valve (4) that cross valve (2) are connected, connect respectively in the closed loop servo control of the brachial artery fluid pressure sensor (5) at three-way valve (4) other both ends loses heart valve (6), closed loop servo control loses heart valve (6) and passes through cross valve (2) with the cuff is connected in three-way valve (4).

2. Intelligent blood pressure measurement based pressure relief system according to claim 1, wherein said brachial artery fluid pressure vibration sensor (3) is a pressure vibration sensor; the brachial artery fluid pressure sensor (5) adopts a pressure sensor.

3. The intelligent pressure relief system based on blood pressure measurement according to claim 1, wherein the radial artery fluid pressure vibration sensor (1) comprises a piezoelectric sensor (11), a sealed resonant cavity (12) and a silica gel filler layer (13), and one surface of the silica gel filler layer (13) is the surface of the radial artery fluid pressure vibration sensor (1) close to the detection position.

4. The intelligent pressure relief system based on blood pressure measurement according to claim 3, wherein the sealed resonant cavity (12) has an arc-shaped structure at a side opposite to the silica gel filler layer (13).

5. Intelligent blood pressure measurement-based pressure relief system according to claim 4, wherein the sealed resonant cavity (12) is provided with auxiliary cavities (14) at two sides inside, and the auxiliary cavities are separated from the sealed resonant cavity.

6. The intelligent pressure relief system based on blood pressure measurement according to claim 1, wherein the closed-loop servo-controlled air escape valve (6) comprises an outer casing (63) with a proportional valve air outlet (61) at one end and a proportional valve air inlet (62) at the other end, and a proportional valve body (64) arranged in the outer casing (63) and provided with a proportional valve wire (65).

7. Intelligent blood pressure measurement based pressure relief system according to claim 6, characterized in that between the proportional valve body (64) and the outer housing (63) is filled a layer of silicone (66).

8. Intelligent blood pressure measurement based pressure relief system according to claim 7, characterized in that the gap between the proportional valve body (64) and the outer housing (63) at the upper part is filled with a silicone layer (66); and a silica gel layer (66) is partially filled in a gap at the lower part between the proportional valve main body (64) and the outer shell (63).

9. Intelligent blood pressure measurement based pressure relief system according to claim 8, wherein said proportional valve body (64) is a micro proportional valve.