CN211962028U - Intelligent pressurization system based on blood pressure measurement - Google Patents

Abstract

The utility model discloses an intelligence pressurization system based on blood pressure measurement, this system include radial artery fluid pressure vibration sensor (12), cross valve (4), respectively with air pump (3), pressure sensor (1), gas storage bag (2) and closed-loop servo control speed limit pressurized flow valve (5) that cross valve (4) are connected, the sleeve area is connected to the other end of closed-loop servo control speed limit pressurized flow valve (5). Adopt the utility model discloses, along with brachial artery department sleeve area locking pressure's increase, whether disappear through radial artery fluid pressure vibration sensor real-time detection radial artery department pulse ripples, when radial artery pulse ripples thoroughly disappears, just can confirm that brachial artery has been in thorough locking state, guaranteed blood pressure measuring's precision from this, especially to the high systolic pressure crowd, avoided the problem that prior art adopted fixed pressurization technical means to exist effectively.

Description

Intelligent pressurization 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 pressurization 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.

In the prior art, most blood pressure measuring devices pressurize the cuff air bag to a fixed pressure value during blood pressure measurement, and the technical means has the following defects: (1) the crowd with low systolic pressure is subjected to overhigh pressure to cause discomfort, and meanwhile, ineffective air leakage time is additionally increased; (2) for the people with high systolic pressure, the situation that brachial artery is not completely locked is easy to occur, and the measurement failure of the people with high blood pressure is caused. Therefore, the existing blood pressure measuring instrument is difficult to apply the proper highest locking pressure according to different individual differences of human bodies, the measuring accuracy is influenced, and even the detection fails.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the above problems and provide an intelligent pressurization system based on blood pressure measurement, which has a simple structure and can ensure that the brachial artery is completely blocked under the highest applied pressure.

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

an intelligent pressurization system based on blood pressure measurement comprises a radial artery fluid pressure vibration sensor, a four-way valve, an air pump, a pressure sensor, an air storage bag and a closed-loop servo control speed-limiting pressurization flow valve, wherein the air pump, the pressure sensor, the air storage bag and the closed-loop servo control speed-limiting pressurization flow valve are respectively connected with the four-way valve, and the other end of the closed-loop servo control speed-limiting pressurization flow valve is connected with.

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.

Further, the radian of the arc-shaped structure is 1.5-2.5.

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

Furthermore, the outer side surface of the silica gel filler layer is of an arc-shaped structure.

Furthermore, closed loop servo control speed limit pressurized flow valve includes that one end is provided with the shell body of proportional valve gas outlet, the other end is 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) adopt the utility model discloses, along with brachial artery department sleeve area locking pressure's increase, whether real-time detection radial artery department pulse ripples disappears, when radial artery pulse ripples thoroughly disappears, can confirm that brachial artery has been in thorough locking state, ensured blood pressure measuring's precision from this, especially to the high systolic pressure crowd, avoided the problem that prior art adopted fixed pressurization technological means to exist effectively.

(2) The utility model discloses can ensure brachial artery and can stop the pressurization after thorough locking, need not apply too much high pressure at sleeve area gasbag, avoid applying too high locking pressure to the crowd of low systolic pressure effectively, not only can lead to the human body uncomfortable, influence measurement accuracy moreover.

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 structural principle schematic diagram of the speed-limiting pressurizing flow valve of the closed-loop servo control of the utility model.

Description of reference numerals: the device comprises a pressure sensor 1, an air storage bag 2, an air pump 3, a four-way valve 4, a closed-loop servo control speed-limiting pressurized flow valve 5, a cuff air bag 6, a radial artery fluid pressure vibration sensor 12, a piezoelectric sensor 121, a sealed resonant cavity 122, a silica gel filler layer 123, an auxiliary cavity 124, a piezoelectric sensor wire 125, a proportional valve air outlet 51, a proportional valve air inlet 52, a proportional valve outer shell 53, a proportional valve main body 54, a proportional valve wire 55 and a silica gel layer 56.

Detailed Description

Examples

The key point is to determine whether the brachial artery has been completely occluded under the highest applied pressure. If the brachial artery is not completely occluded, the measurement results must not be accurate. As shown in fig. 1 to 3, the present embodiment provides an intelligent pressurization system based on blood pressure measurement, which changes the existing technical means of fixed pressurization, performs real-time detection at the radial artery, determines the locking condition of the brachial artery according to the real-time detection result of the sensor, and determines that the brachial artery is completely locked when the radial pulse wave completely disappears, thereby ensuring the accuracy of blood pressure measurement. Specifically, the intelligent pressurization system comprises a radial artery fluid pressure vibration sensor, a four-way valve, an air pump, a pressure sensor, an air storage bag and a closed-loop servo control speed-limiting pressurization flow valve, wherein the air pump, the pressure sensor, the air storage bag and the closed-loop servo control speed-limiting pressurization flow valve are respectively connected with the four-way valve, and the other end of the closed-loop servo control speed-limiting pressurization flow valve.

The working method of the intelligent pressurization system comprises the following steps: when the blood pressure measuring host is started, the air pump inflates the air storage bag through the four-way valve, and the air storage bag stores high-pressure air; when the detection is started, the air pump and the air storage bag inflate the cuff air bag through the closed-loop servo control speed-limiting pressurized flow valve; and the radial artery fluid pressure vibration sensor detects a fluid pressure pulse wave signal at the radial artery in real time, and if the fluid pressure pulse wave signal at the radial artery disappears, the closed-loop servo control speed-limiting pressurized flow valve is closed to complete the inflating and pressurizing operation of the cuff. The sensor signals, the air pump, the valves and the like are processed by a central processing unit (model: STM32F103ZET6) and relevant control instructions are sent. Therefore, the blood flow of the brachial artery of the person before each measurement is ensured to be in a complete blocking state, the detection result is ensured, the problem that the brachial artery is not completely locked due to the existing fixed pressurization technology is avoided especially for the group with high systolic pressure, and meanwhile, the problems that the pressurization is excessive due to the fixed pressurization technology and the human body is uncomfortable and the like are avoided for the group with low systolic pressure.

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 locking condition of the brachial artery. 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 embodiment adopts the double-inflation structure of the air pump and the air storage bag, so that the cuff can be rapidly pressurized at the initial stage of pressurization, and the air pressure value in the air storage bag is detected and fed back by the pressure sensor.

The closed-loop servo control speed-limiting pressurized flow valve comprises an outer shell and a proportional valve main body, wherein one end of the outer shell is provided with a proportional valve air outlet, the other end of the outer shell is provided with a proportional valve air inlet, and the proportional valve main body is arranged in the outer shell and provided with a proportional valve lead. 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. The closed-loop servo control speed-limiting pressurized flow valve can adjust the opening of the proportional valve according to the actual pressurizing condition, so as to realize dynamic adjustment of the pressurizing process, for example: the opening degree is increased in the early stage of pressurization to achieve the purpose of rapid pressurization, and the opening degree is gradually reduced from the middle stage of pressurization to the later stage of pressurization to ensure that the excessive pressurization condition is avoided as much as possible when the brachial artery is completely locked.

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 (10)

1. The intelligent pressurization system based on blood pressure measurement is characterized by comprising a radial artery fluid pressure vibration sensor (12), a four-way valve (4), an air pump (3), a pressure sensor (1), an air storage bag (2) and a closed-loop servo control speed-limiting pressurized flow valve (5), wherein the air pump, the pressure sensor (1), the air storage bag and the closed-loop servo control speed-limiting pressurized flow valve (5) are connected with the four-way valve (4), and the other end of the closed-loop servo control speed-limiting pressurized flow valve (5) is connected.

2. The intelligent pressurization system based on blood pressure measurement according to claim 1, characterized in that, the radial artery fluid pressure vibration sensor (12) comprises a piezoelectric sensor (121), a sealed resonant cavity (122) and a silica gel filler layer (123), and one side of the silica gel filler layer (123) is the side of the radial artery fluid pressure vibration sensor (12) close to the detection site.

3. Intelligent pressurization system based on blood pressure measurement according to claim 2, characterized in that said sealed resonant cavity (122) presents an arc-shaped structure with respect to one side of said silica gel filler layer (123).

4. The intelligent pressurization system based on blood pressure measurement according to claim 3, characterized in that the arc of the arc-shaped structure is 1.5-2.5.

5. Intelligent pressurization system based on blood pressure measurement according to claim 3, characterized in that, the sealed resonant cavity (122) is internally provided with a secondary cavity (124) at both sides thereof.

6. Intelligent pressurization system based on blood pressure measurement according to claim 3, characterized in that, the outer side surface of said silica gel filler layer (123) is in an arc-shaped structure.

7. The intelligent pressurization system based on blood pressure measurement according to claim 1, characterized in that the closed-loop servo control speed-limiting pressurization flow valve (5) comprises an outer shell (53) provided with a proportional valve outlet (51) at one end and a proportional valve inlet (52) at the other end, and a proportional valve main body (54) provided with a proportional valve lead (55) and arranged in the outer shell (53).

8. Intelligent pressurization system based on blood pressure measurement, according to claim 7, characterized in that between said proportional valve body (54) and said outer casing (53) is filled a silicone layer (56).

9. Intelligent pressurization system based on blood pressure measurement, according to claim 8, characterized in that the gap between the proportional valve body (54) and the outer shell (53) at the upper part is filled with a silicone layer (56); and a silica gel layer (56) is partially filled in a gap at the lower part between the proportional valve main body (54) and the outer shell (53).

10. Intelligent pressurization system based on blood pressure measurement, according to claim 9, characterized in that said proportional valve body (54) employs a micro proportional valve.

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