WO2017045250A1

WO2017045250A1 - Electric sphygmomanometer

Info

Publication number: WO2017045250A1
Application number: PCT/CN2015/093451
Authority: WO
Inventors: 王晓锋
Original assignee: 深圳邦普医疗设备系统有限公司
Priority date: 2015-09-18
Filing date: 2015-10-30
Publication date: 2017-03-23
Also published as: CN105125196B; CN105125196A

Abstract

An electric sphygmomanometer comprises a cuff/wrist band (1) and a host computer (2), and an air balloon (11) having a fixed amount of air therein is provided in the cuff/wrist band (1). The host computer (2) comprises a pressure sensor (21) sensing a pressure of the air balloon (11), a rotation mechanism (22) changing a volume of the air balloon (11) via compressing the air balloon (11), and a CPU control module (23) configured to control the operation of the rotation mechanism (22) and to receive and process a pressure signal acquired by the pressure sensor (21). The electric sphygmomanometer can realize pressure variation via changing the volume of the air balloon, has a simple air channel structure, and is convenient to use.

Description

Electronic sphygmomanometer

Technical field

[0001] The present invention relates to the field of medical detection technology, and in particular to an electronic blood pressure monitor.

Background technique

[0002] Hypertension is the most common chronic disease and the most important risk factor for cardiovascular and cerebrovascular diseases. Stroke, myocardial infarction, heart failure and chronic kidney disease are major complications. Practices at home and abroad have proven that high blood pressure is a disease that can be prevented and controlled. It can lower the blood pressure level of patients with hypertension, significantly reduce stroke and heart disease events, significantly improve the quality of life of patients, and effectively reduce the burden of disease. Therefore, it is especially important for daily monitoring of blood pressure.

[0003] At present, sphygmomanometers use non-invasive measurement methods. Non-invasive measurement methods can be divided into auscultation and oscillometric methods. However, because auscultation measurement methods require strong professional knowledge, they are generally used by doctors and nurses, and are not suitable for families. Individuals take blood pressure measurements. The oscillometric method is a relatively advanced electronic measurement method developed in the 1990s. It uses an air pump to inflate and compress the cuff, and uses an inflatable cuff to compress the arterial blood vessels, so that the arterial blood vessels are in full-semi-closed-completely closed State, after the measurement is completed, use a solenoid valve to deflate.

[0004] In the existing electronic sphygmomanometer, the pressure change in the cuff/wristband is often achieved by filling and releasing the cuff/wrist strap through the air pump and the electromagnetic valve, and the structure is complicated; in addition, due to the electronic sphygmomanometer, especially The electronic sphygmomanometer for boost measurement requires relatively high stability of the air pump, so the quality of the air pump directly affects the accuracy and stability of the electronic sphygmomanometer measurement.

technical problem

[0005] An object of the present invention is to provide an electronic sphygmomanometer that can realize pressure change directly by changing the volume of a balloon without requiring an air pump and a solenoid valve, and solves the problems of unstable measurement and complicated structure of the electronic sphygmomanometer on the market.

Problem solution

Technical solution

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an electronic sphygmomanometer comprising a cuff/wrist strap and a main body; the cuff/wristband is provided with an airbag with a built-in quantitative gas; Sensing institute A pressure sensor for bladder pressure, a rotating mechanism for squeezing the bladder to change the volume of the bladder, and a CPU control module for controlling operation of the rotating mechanism and receiving and processing pressure signals collected by the pressure sensor.

[0007] wherein the air bag is provided with a gas nozzle; the pressure sensor senses the air bag pressure through the air nozzle.

[0008] wherein the rotating mechanism includes a first rotating shaft and a second rotating shaft for relatively pressing the airbag, and the first rotating shaft and the second rotating shaft are parallel to each other.

[0009] wherein, the main body further includes a casing; the airbag includes a fixed end and a movable end, the fixed end is fixed on the casing, and the movable end is clamped on the first rotating shaft and the Between the second rotating shafts; the first rotating shaft and the second rotating shaft may be driven to rotate or loosen the airbag by motor or mechanical means

[0010] The host further includes a button control circuit, and the button control circuit is electrically connected to the CPU control module, and is configured to send a control signal to the CPU control module.

[0011] The host further includes a display module, and the display module is electrically connected to the CPU control module.

, used to display human blood pressure measurement data.

[0012] The host further includes a communication module electrically connected to the CPU control module, configured to send human blood pressure measurement data.

[0013] wherein, the CPU control module includes a signal input end and a signal output end; the signal input end is electrically connected to the pressure sensor, and the signal output end is electrically connected to the rotating mechanism, the pressure The sensor collects the pressure signal and sends the pressure signal to the CPU control module, and the CPU control module processes the collected pressure signal to obtain the measured values of the diastolic pressure, the systolic pressure and the average pressure of the human body, thereby realizing the blood pressure measurement of the human body; The volume of the airbag is increased by the rotating mechanism to return to the state before being pressed.

[0014] The host further includes a power module, and the power module is electrically connected to the CPU control module and provides power to the CPU control module.

[0015] wherein, the host further includes a power adapter, and the power adapter is electrically connected to the CPU control module and provides power to the CPU control module.

Advantageous effects of the invention

Beneficial effect [0016] The electronic sphygmomanometer of the invention has the following beneficial effects: Compared with the conventional electronic sphygmomanometer, the electronic sphygmomanometer of the invention can directly realize the pressure change by changing the volume of the airbag, does not need the air pump and the electromagnetic valve, and has a simple gas path structure. It is more convenient to use, easier to carry, and suitable for wearable medical concepts.

Brief description of the drawing

DRAWINGS

1 is a schematic block diagram of a conventional electronic sphygmomanometer in an embodiment of an electronic sphygmomanometer according to the present invention;

2 is a schematic block diagram of an electronic sphygmomanometer according to an embodiment of an electronic sphygmomanometer according to the present invention;

3 is a schematic structural view of an embodiment of an electronic sphygmomanometer according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0020] In order to explain the technical solutions of the present invention more clearly, the technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. For the skilled person, other embodiments can be obtained based on these embodiments without any creative effort.

[0021] The principle block diagram of the traditional electronic sphygmomanometer is shown in Figure 1. The traditional electronic sphygmomanometer includes a cuff/wrist strap, a gas pump, a pressure sensor, a deflation valve, a power module, a button control circuit, a display module, and a CPU control. Modules and signal inputs and outputs, etc. The traditional electronic sphygmomanometer inflates and presses the cuff/wrist strap through the air pump, and compresses the arterial blood vessels of the human body with the inflated cuff/wrist strap. As the pressure in the cuff/wristband changes, the pressure sensor collects the cuff. / The pressure change in the wristband is converted into a digital signal and sent to the CPU control module. Using embedded software analysis, the measured values of diastolic pressure, systolic pressure and average pressure of the human body are obtained, and the blood pressure of the human body is measured. After the measurement is completed, , Snoring the solenoid valve to deflate the cuff/wrist strap to zero the pressure inside the cuff/wrist strap. In the conventional electronic sphygmomanometer, the pressure change in the cuff/wristband is realized by filling and releasing the cuff/wrist strap through the air pump and the electromagnetic valve, and the structure is complicated and inconvenient to use.

[0022] The electronic sphygmomanometer provided by the invention cancels the air pump and the electromagnetic valve according to Boyle's law, directly changes the volume of the airbag through the mechanical structure to change the pressure acting on the human body, realizes the blood pressure measurement, has a simple structure and is convenient to use.

[0023] Boyle's Law: At quantitative temperature, the volume of an ideal gas is inversely proportional to the pressure of the gas. The law of Boyle was based on the British chemist Robert Boyle (1627-1691) in 1662. The test results are presented. The Robert Boyle experiment found that: After applying twice the pressure to a certain volume of air, the volume of air will be reduced to 1/2 of the original volume; after applying a pressure of 3 times to a certain volume of air, The volume of air is reduced to 1/3 of the original volume; when a certain volume of air is squeezed, the volume change of the air is always proportional to the change in pressure. Robert, Boyle created a simple mathematical equation, the Boyle's law formula, to represent this proportional relationship:

[0024] V=C/P

[0025] V: volume of gas, P: pressure, C: constant.

[0026] In the first two states, the temperature is the same, and the gas relationship in the two states of 1, 2 can be expressed as:

[0027] P !V !=P ₂ V 2

[0028] This is the first quantitative formula describing the motion of gases in human history, laying the foundation for quantitative research and chemical analysis of gases.

[0029] Referring to FIG. 2 and FIG. 3, an embodiment of an electronic sphygmomanometer provided by the present invention includes a cuff/wristband 1 and a main body 2; and an airbag 11 with a built-in quantitative gas is disposed on the cuff/wristband 1 The main body 2 includes a pressure sensor 21 that connects and senses the pressure of the airbag 11, a rotating mechanism 22 that changes the volume of the airbag 11 by squeezing or relaxing the airbag 11, and controls the operation of the rotating mechanism 22 and receives and processes the pressure collected by the pressure sensor 21. The CPU control module 23 of the signal, the CPU control module 23 is also responsible for calculating the reference blood pressure data based on the data of the pressure sensor according to the measurement program, and displaying or transmitting the data to the user.

[0030] The cuff/wristband 1 may be a soft woven fabric that can be wound around a blood vessel close to the skin surface of the human arm/wrist. The airbag 11 can be placed on the cuff/wrist by means of a button-button eye, a silica gel, or the like. The outer portion of the belt 1 can also be placed inside the cuff/wristband 1 by sewing or the like; the airbag 11 can be provided with a gas nozzle 12 fixed to the airbag 11, and the air nozzle 12 is connected to the pressure sensor 21 and The airbag 11 is closed to prevent the gas inside the airbag 12 from leaking out, and the air in the airbag 11 is used for the airbag 11 to be vented. The airbag 11 can be inflated through the air nozzle 12, and the air nozzle 12 can also be inflated. It is used to transmit a pressure signal in the airbag 11 to the pressure sensor 21; the material of the airbag 11 is not limited, and a material having good airtightness, such as rubber or the like, is mainly used.

[0031] The pressure sensor 21 is used for collecting the pressure signal in the airbag 11 and transmitting it to the CPU control module 23. The pressure sensor 21 can collect the pressure signal in the airbag 11 through the air nozzle 12 on the airbag 11, or can be directly disposed on the airbag 1 The pressure signal in the airbag 11 is collected by the deformation of the airbag 11 on the first.

[0032] In the electronic sphygmomanometer of the present invention, the rotating mechanism 22 is used to change the volume of the airbag 11 by squeezing the airbag 11 Preferably, the rotating mechanism 22 includes a first rotating shaft 221 and a second rotating shaft 22 2 for relatively pressing the airbag 11, and the first rotating shaft 221 and the second rotating shaft 222 are parallel to each other, and one end of the airbag 11 is sandwiched at the first end. Between the rotating shaft 221 and the second rotating shaft 222, the CPU control module 23 controls the motor to operate to rotate the first rotating shaft 221 and the second rotating shaft 222 of the motor driving rotating mechanism 22 in opposite reverse directions to press the airbag 11 so that the volume of the airbag 11 is made. When the pressure in the airbag 11 is increased, the pressure sensor 21 collects the pressure signal in the airbag 11 and transmits it to the CPU control module 23. In the present embodiment, the airbag 11 is pressed by the first rotating shaft 221 and the second rotating shaft 222 of the rotating mechanism 22 to reduce the volume of the airbag 11, and when the motor is rotated in the reverse direction, the volume of the airbag 11 can be increased. Wherein, not only can the first rotating shaft 221 and the second rotating shaft 222 be rotated by the motor or the mechanical means to press the airbag 11 to change the volume of the airbag 11, and in other embodiments, the airbag 11 may be squeezed in other manners. The volume of the airbag 11 is changed. Among them, the method of driving the rotating shaft of the motor can be reversed, including driving the two rotating shafts at the same time, or driving only one of the rotating shafts, and driving with the rotating shaft.

[0033] The host 2 further includes a button control circuit 27, a communication module or/and a display module 28; wherein the button control circuit 27 is electrically connected to the CPU control module 23 for transmitting a control signal to the CPU control module 23, the communication module and _{The CPU} control module 23 is electrically connected to transmit the blood pressure measurement value of the human body, and the display module 28 is electrically connected to the CPU control module 23 for displaying the blood pressure measurement value of the human body on the display panel. The communication module may be a Bluetooth module, configured to transmit the calculated blood pressure data to the Bluetooth mobile phone of the accessory in a Bluetooth manner, and support cloud processing of the blood pressure measurement data. If only the display module is installed, the measurement storage function is wired, as in the case of setting the communication module, the offline measurement storage and online storage management functions are supported. For example, only the communication module is installed, only the online storage management function is supported, which may be different. Need to make a choice.

[0034] The CPU control module 23 includes a signal input terminal 231 and a signal output terminal 232; the signal input terminal 231 is electrically connected to the pressure sensor 21, and the signal output terminal 232 is electrically connected to the rotating mechanism 22; on the cuff/wristband 1 The built-in gas of the airbag 11 is always kept constant. Before the airbag 11 is not squeezed, the volume of the airbag 11 is the initial volume, and the pressure in the airbag 11 is the initial pressure; the button control circuit 27 sends a control signal to the CPU control module 23, After the CPU control module 23 processes the signal, the rotating mechanism 22 is driven by a motor or a mechanical device to start the operation. According to Boyle's law, the airbag 11 is pressed at the rotating mechanism 22 to reduce the volume of the airbag 11 and act on the human artery. The pressure of the blood vessel is correspondingly increased. During the pressure increase, the pressure sensor 21 collects the pressure change and converts it into a digital signal and sends it to the CPU control module 23, and obtains the diastolic pressure, systolic blood pressure and average of the human body through embedded software analysis. The measured value of the pressure, the display module 28 will get the electricity The pressure test value is displayed on the display panel to measure the blood pressure of the human body; after the measurement is completed, the button control circuit 27 sends a control signal to the CPU control module 23, and the CPU control module 23 processes the signal and then drives the rotation by means of a motor or a machine. The mechanism 22 works, and the volume of the airbag 11 is increased by the rotating mechanism 22 to return to the state before being squeezed. The air pump and the electromagnetic valve are not required in the whole working process, and the structure is simple and convenient to use.

[0035] The host 2 further includes a power module 25 or a power adapter 26, and the power module 25 or the power adapter 26 is electrically connected to the CPU control module 23 and supplies power to the CPU control module 23. The power module 25 can include a lithium battery.

[0036] Specifically, FIG. 3 is a schematic structural view of an embodiment of an electronic sphygmomanometer according to the present invention; a gas nozzle 11 having a built-in quantitative gas as shown in the drawing is provided with a gas nozzle 12; and a pressure sensor 21 is transmitted through the gas nozzle 12. Airbag pressure. The rotating mechanism 22 includes a first rotating shaft 221 and a second rotating shaft 222 for relatively pressing the airbag 11, and the first rotating shaft 221 and the second rotating shaft 222 are parallel to each other. The main body 2 further includes a housing 24; the airbag 11 includes a fixed end and a movable end, and the fixed end of the airbag 11 is fixed to the housing 24, and the movable end of the airbag 11 is interposed between the first rotating shaft 221 and the second rotating shaft 222.

[0037] After the airbag 11 with the built-in metered gas is not squeezed, the volume of the airbag 11 is the initial volume ν, the pressure of the airbag 11 is the initial pressure P1 _{; and} the cuff/wristband 1 is wound around the human arm/wrist on inch, airbag 11 is positioned between the arm / wrist cuff and the outer cloth / wristband 1, this is the first airbag 11 inch pressed, the volume of the air bag 11 by the initial volume V, down to V _2, according to the wave The law of the ear is 1\¥ ₁ =? ₂ ¥ ₂ , the pressure in the airbag 11 is correspondingly increased from the initial pressure P to P _{2 ; the} control signal is sent to the CPU control module 23 via the button control circuit 27, and the CPU control module 23 After the signal is processed, the motor is controlled to operate to cause the motor to drive the rotating mechanism 22 to operate. The first rotating shaft 221 of the rotating mechanism 22 rotates counterclockwise with the second rotating shaft 222 of the second rotating shaft 222, and the airbag 11 is further squeezed, and the airbag 11 is inside. The gas moves toward the fixed end of the airbag 11, and as the first rotating shaft 221 and the second rotating shaft 222 of the rotating mechanism 22 rotate continuously, the airbag 11 is continuously squeezed, and the volume of the airbag 11 is continuously reduced from ¥ ₂ to ¥ ₃ . according to Boyle's law ^{_{_{_{1 5 2 ¥ 2 =? 3}}}} ¥ 3, the air bag 11 Accordingly, increasing pressure from the P ₂ to P _3, the pressure acting on the human arteries is also a corresponding increase in the pressure P ₂ P ₃ increasing to the process, the pressure sensor 21 and pressure variations acquisition The converted digital signal is sent to the CPU control module 23, and the measured values of the diastolic pressure, the systolic pressure and the average pressure of the human body are obtained through embedded software analysis, and the display module 28 displays the obtained voltage test value on the display panel to realize the blood pressure of the human body. measuring; After the measurement is completed, the control signal is sent to the CPU control module 23 through the button control circuit 27. The CPU control module 23 controls the motor to operate after the signal is processed to cause the motor to drive the rotating mechanism 22, the first rotating shaft 221 and the second of the rotating mechanism 22. The rotating shaft 222 rotates in the opposite direction, that is, the first rotating shaft 221 rotates counterclockwise, and the second rotating shaft 222 rotates along the needle. The volume of the airbag 11 gradually increases to the initial volume V before the pressing, and the pressure in the airbag 11 Accordingly, the initial pressure P is restored, and the pressure applied to the arm/wrist is gradually reduced, thereby realizing the pressure relief of the airbag 11, and the electronic sphygmomanometer is returned to the pre-work state, and the next blood pressure test can be performed.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

Claims

Claim

[Claim 1] An electronic sphygmomanometer, comprising: a cuff/wrist strap (1) and a main body (2); the cuff/wrist strap (1) is provided with an airbag with a built-in quantitative gas (11) The host (2) includes a pressure sensor (21) that senses the pressure of the airbag (11), a rotating mechanism (22) that changes the volume of the airbag (11) by squeezing the airbag (11), and A CPU control module (23) for controlling the operation of the rotating mechanism (22) and receiving and processing the pressure signals collected by the pressure sensor (21).

[Claim 2] The electronic sphygmomanometer according to claim 1, wherein the airbag (11) is provided with a gas nozzle (12); the pressure sensor (21) passes through the gas nozzle (12) Sensing airbag pressure.

[Claim 3] The electronic sphygmomanometer according to claim 2, wherein the rotating mechanism (22

a first rotating shaft (221) and a second rotating shaft (222) for relatively pressing the airbag (11), the first rotating shaft (221) and the second rotating shaft (222) being parallel to each other

[Day 4] The electronic sphygmomanometer according to claim 3, wherein the main body (2) further includes a housing (24); the airbag (11) includes a fixed end and a movable end, the fixing The end is fixed to the casing (24), and the movable end is sandwiched between the first rotating shaft (221) and the second rotating shaft (222); the first rotating shaft can be driven by a motor ( 221) and the second rotating shaft (222) rotates to squeeze or loosen the airbag (11).

[Claim 5] The electronic sphygmomanometer according to claim 3, wherein the host (2) further comprises a button control circuit (27), the button control circuit (27) and the CPU control module ( 23) An electrical connection for transmitting a control signal to the CPU control module (23).

[Claim 6] The electronic sphygmomanometer according to claim 3, wherein the host (2) further comprises a display module (28), the display module (28) and the CPU control module (23) Electrical connection, used to display blood pressure measurement data of the human body.

[Claim 7] The electronic sphygmomanometer according to claim 3, wherein the host (2) further comprises a communication module electrically connected to the CPU control module (23) for transmitting blood pressure measurement of the human body data.

[Claim 8] The electronic sphygmomanometer according to claim 3, wherein the CPU control module

(23) comprising a signal input end (231) and a signal output end (232); the signal input end (231) is electrically connected to the pressure sensor (21), the signal output end (232) and the rotation The mechanism (22) is electrically connected, the pressure sensor (21) collects a pressure signal and sends the pressure signal to the CPU control module (23), and the CPU control module (23) processes the collected pressure signal to obtain the relaxation of the human body. The measured values of pressure, systolic pressure and average pressure are used to measure the blood pressure of the human body; after the measurement is completed, the volume of the airbag (11) is increased by the rotating mechanism (22) to return to the state before being squeezed.

The electronic sphygmomanometer according to claim 1, wherein the host (2) further comprises a power module (25), the power module (25) and the CPU control module (23) Electrically connecting and providing power to the CPU control module (23).

[10] The electronic sphygmomanometer according to claim 3, wherein the host (2) further includes a power adapter (26), the power adapter (26) and the CPU control module (23) Electrically connecting and providing power to the CPU control module (23).