WO2016008275A1

WO2016008275A1 - Closed mercury-free sphygmomanometer

Info

Publication number: WO2016008275A1
Application number: PCT/CN2015/000190
Authority: WO
Inventors: 吕平
Original assignee: 吕平
Priority date: 2014-07-18
Filing date: 2015-03-20
Publication date: 2016-01-21
Also published as: CN104605836B; CN104605836A

Abstract

Disclosed is a closed mercury-free sphygmomanometer used for measuring human blood pressure: inflating and pressurizing the cuff (17) tied on a human arm by a pressurized gas tube (21) using a pressurizing and air inflating ball (20), wherein the pressure in the cuff (17) will pressurize a closed pressure reservoir cylinder (14) through an interconnected gas tube (16), and push an elastic, stretchable corrugated pipe (15), which is closed in the pressure reservoir cylinder (14), made of a metal or rubber carbon plastic material to be filled up with a transparent or colored antifreeze liquid, and the antifreeze liquid (8) in the corrugated pipe (15) flows up and down along a glass tube (3) provided with a lateral tee joint (9) and a vertical tee joint (6) connected together and provided with a blood pressure scale (2) at the outside in the glass tube (3) under the action of the theory of communicating vessels, resulting in the measurement (2) of human body's blood pressure on the blood pressure scale. A light emitting diode (7) is provided below the vertical tee joint (6) and thus makes light highlights form on the liquid column. A heart rate measurement sensor (18) is provided in the cuff (17) and displays the measured data on a digital heart rate displayer (19). The sphygmomanometer is also equipped with an automatic switch and overvoltage alarms.

Description

Closed mercury-free sphygmomanometer

Technical field:

The invention is in the field of medical device technology products: an instrument for measuring blood pressure of a human body. It is a mechatronic medical device product that uses air pressure to push a sealed bellows in a pressure storage tube to move the liquid in the glass tube up and down to measure blood pressure and electronically measure the heart rate.

Background technique:

Among the products that measure blood pressure in humans: one is a mercury sphygmomanometer that has been commonly used for many years. The method is: by inflating the cuff bag tied to the arm of the human body, inflating the cuff bag with the pressurized inflation ball through the pressurized inflation tube, and the air pressure in the cuff bag pushes the mercury in the mercury box along the connecting trachea along the belt. The graduated hollow glass tube rises or falls. In this way, the blood pressure of the upper arm of the human body beats the mercury in the glass tube to move up and down, and the movement of the mercury is displayed on the glass tube with the scale. Appropriate increase in air pressure or exhaust pressure will show the high blood pressure and low blood pressure of the human blood pressure to measure the blood pressure of the human body. This method is simple, stable and effective, but mercury can also cause pollution to the ecological environment due to the heavy use or abandonment of mercury, which is not conducive to environmental protection.

Another type is the meter-pointed sphygmomanometer: it pushes the metal bellows with air pressure, pushes the gear through the bellows, and then the gear is rotated by the gear to change the blood pressure. Since the pointer is rotated to indicate blood pressure data, it does not conform to the way in which the mercury column moves up and down in the glass tube in the conventional mercury sphygmomanometer. The visual effect is different, and it is inconvenient to observe, and is generally used as a carrier.

The other is an electronic sphygmomanometer: its method is to inflate the cuff that is tied to the arm of the human body by electric inflation. The air pressure in the cuff is sent to the micro-processing through the blood pressure sensor placed in the cuff. The processing is performed in the device, and the processed blood pressure data is displayed on the electronic display screen. This electric inflation will also gradually depressurize and reduce blood pressure, thereby measuring the high pressure, low pressure of the human blood pressure and the number of beats of the heart, that is, the heart rate. The advantage of this method is that the number shows the blood pressure is intuitive, but the digital fluctuation is large, the accuracy is low, and it is generally used as a reference for the blood pressure condition of the human body.

Summary of the invention:

In mercury sphygmomanometers, blood pressure is measured by mercury and mercury levels. Mercury, that is, the use or disposal of mercury, can cause pollution to the ecological environment. The present invention is the use of an antifreeze liquid instead of mercury.

The technical proposal proposed by the invention is: using pneumatic pressure to push an elastically stretchable bellows filled with transparent or colored antifreeze liquid made of metal or rubber carbon plastic material in a closed pressure storage cylinder, so as to prevent freezing in the bellows The liquid is connected along the transverse tee and the vertical tee which are sealed together and the glass tube with the blood pressure scale outside, and the liquid is flowed up and down in the glass tube according to the pressure. Thereby the blood pressure of the human body is measured on the blood pressure scale. At the same time, the heart rate is measured.

The technical solution adopted by the present invention to solve the technical problem thereof is:

In a rectangular box that can be opened, there is a strip on the left side of the lid of the box, a blood pressure scale marked on the other side of the mercury column, and a glass tube for the antifreeze liquid to flow up and down in the middle of the scale. . In order to prevent the evaporation of the antifreeze liquid, a vent pipe and a negative pressure cylinder with a negative pressure are sealed on the upper side of the glass tube, and the negative pressure cylinder prevents the evaporation of the antifreeze liquid and provides The antifreeze liquid is not hindered and affected by the pressure of the outside and inside when flowing up and down in the glass tube. The lower end of the glass tube is provided with a vertical three-way, the upper one of the vertical three-way is sealed with the glass tube, and the next one of the vertical three-way is closed with an LED light-emitting diode corresponding to the glass tube, and the light-emitting diode emits The light is directly irradiated onto the antifreeze liquid in the glass tube. Due to the light conduction of the liquid, a bright spot is formed on the antifreeze liquid column in the glass tube, so that the liquid column plane and the blood pressure scale in the glass tube can be easily observed. Corresponding exact location. The middle right side of the vertical tee is connected to the left side of the horizontal tee with the adjusting tube, and the right side of the horizontal tee is connected by a plastic hose and the right side of the upper cover of the sphygmomanometer box. The bellows filled with antifreeze liquid in the pressure storage cylinder is sealed and connected. An adjusting tube is arranged on a middle of the horizontal tee, and an adjusting screw is arranged on the adjusting tube. The lower end of the adjusting screw is provided with a rubber piston, and the rotating adjusting screw drives the rubber piston to move up and down in the adjusting tube, and the movement of the piston The volume of the antifreeze liquid in the horizontal tee is changed to increase and decrease the liquid column in the glass tube to adjust the position of the liquid plane bright spot corresponding to the zero point on the blood pressure scale. The antifreeze liquid in the bellows flows through the plastic tube through the transverse three-way and the vertical three-way in the glass tube under the action of the connecting gas principle. The antifreeze liquid can be either transparent or colored. The space portion of the pressure accumulator is connected by a vent pipe and a cuff that is tied to the arm of the human body. A heart rate measuring sensor is placed in the cuff to measure the heart rate and send the data to the heart rate digital display for display. The sphygmomanometer also has an overvoltage alarm circuit that uses liquid as a conductor. When the pressure rises so that the liquid column rises beyond the glass tube to reach the circuit contact, the liquid will turn on the alarm circuit to illuminate the red LED while the buzzer sounds. A ejector rod is arranged on the outer side of the scale, and a ejector pin is fixed on the upper end of the ejector pin. The ejector pin pushes a ventilating block corresponding to the opening on the glass tube. The vent blockage prevents the antifreeze liquid in the glass tube from being When the sphygmomanometer is inverted, it flows into the negative pressure cylinder. A power switch is fixed under the jack pusher, and the switch is turned off under the compression of the jack pusher. The inside of the lower cover of the box is provided with a high-profile piece corresponding to the position of the ejector pin. When the upper cover of the sphygmomanometer is opened, the ejector pin is raised under the support of the high bending piece, and the ejector pin is raised to push up the ejector pin. The ejector pin pushes the ventilator to block the airflow, and the airflow is unblocked. Compression of the switch handle turns the power switch on, allowing the battery pack to power heart rate measurement, LEDs, and overvoltage alarm circuits.

BRIEF DESCRIPTION OF THE DRAWINGS:

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are a schematic diagram of the components of a "closed mercury-free sphygmomanometer" according to the present invention: the components of the present invention are described below with reference to the accompanying drawings: (1) the upper cover of the sphygmomanometer box, (2) Blood pressure scale, (3) glass tube, (4) vent tube, (5) negative pressure tube, (6) vertical tee, (7) light-emitting diode, (8) antifreeze liquid, (9) lateral tee , (10) adjustment tube, (11) adjustment screw, (12) rubber piston, (13) plastic hose, (14) pressure cylinder, (15) metal bellows, (16) joint vent, (17) sleeve Bag, (18) heart rate measurement sensor, (19) heart rate digital display, (20) pressurized inflatable ball, (21) pressurized inflation tube, (22) ejector, (23) ejector push, (24) ventilation Clogged, (25) power switch, (26) box lower cover, (27) high bent piece, (28) battery pack, (29) circuit contact, (30) red LED, (31) buzzer.

detailed description:

The following is a description of the "closed mercury-free sphygmomanometer" proposed by the present invention in conjunction with the drawings of the specification. Application method: In a rectangular box that can be opened, on the left side of the upper cover (1) of the box, there is a blood pressure scale (2) on the other side of the mercury column, and a pressure gauge (2) is placed on the other side of the scale. The glass tube (3), the upper end of the glass tube is sealed by a vent pipe (4) and a negative pressure cylinder (5). The lower end of the glass tube is sealed with the upper one of the vertical tee (6), and the next pass of the vertical tee is sealed with an LED light-emitting diode (7). The light emitted by the LED directly illuminates under the glass tube. The opening is filled with the middle of a transparent or colored antifreeze liquid (8). The right side of the vertical tee is connected to the left side of a horizontal tee (9), and an adjusting tube (10) is provided in the middle of the horizontal tee, and an adjustment is arranged on the upper side of the adjusting tube. Screw (11), a rubber piston (12) is fixed on the lower part of the adjusting screw. Turning the adjusting screw will drive the rubber piston up and down to adjust the volume of the antifreeze liquid to adjust the bright spot of the antifreeze liquid column in the glass tube and the blood pressure scale. Corresponding zero position. On the right side of the horizontal tee, a plastic hose (13) and a pressure accumulator (14) placed on the right side of the upper cover of the sphygmomanometer are filled with antifreeze liquid and sealed in a metal bellows in the pressure cylinder ( 15) Phase sealed connection. The antifreeze liquid can flow through the corrugated tube and the glass tube through the plastic hose, the horizontal tee, and the vertical tee under the principle of the joint ventilation. Gas and liquid flow up and down in the glass tube without being affected by the external atmospheric pressure. The cavity portion between the outside of the metal bellows and the sealed pressure accumulator is connected by a vent pipe (16) and a cuff (17) that is tied to the blood pressure of the human arm. A heart rate measuring sensor (18) is provided in the cuff and the heart rate data is transmitted to the heart rate digital display (19) via the wire. The inflated portion of the cuff is also provided with a pressurized inflatable ball (20) for inflating and pressurizing the cuff through a pressurized inflation tube (21). A ejector pin (22) is arranged on the outer side of the scale, and a ejector pin (23) is fixed on the top of the ejector pin, and a venting block (24) corresponding to the opening in the glass tube is fixed in the middle of the ejector pin. The jack pusher also compresses the switch handle of the power switch (25). A struts (27) are provided on the inner side of the lower sphygmomanometer box lower cover (26) of the ejector pin corresponding to the position of the ejector pin. A battery pack (28) is provided inside the lower cover of the sphygmomanometer box. The overpressure alarm circuit of the sphygmomanometer uses liquid as a conductor. When the pressure rises and the liquid column rises beyond the glass tube to reach the circuit contact (29), the liquid will turn on the alarm circuit to illuminate the red LED (30) to emit red light. At the same time, the buzzer (31) emits an audible sound.

When the sleeve is tied to the human arm for blood pressure measurement: open the upper cover of the sphygmomanometer box. At this time, the ejector will slide forward, and the ejector will be raised under the action of supporting the high bending piece and the ejector The pusher drives the ventilation blockage to be pulled out from the upper opening of the glass tube to make the airflow unblocked, and the switch handle is released to open the power switch, so that the battery pack supplies power to the LED, heart rate measurement and overvoltage alarm circuit. The pressurized air ball is used to inflate and press the sleeve by the pressurized inflation tube, and the air pressure is inflated and pressurized by the air vent tube, and the air pressure in the pressure storage tube compresses the metal bellows enclosed therein, so that the bellows follows The change of air pressure is carried out, and the expansion and contraction of the bellows pushes the antifreeze liquid filled inside through the plastic hose, the horizontal tee, and the vertical tee. Under the principle of the joint ventilation, the pressure in the glass tube follows the pressure. That is, the change in blood pressure of the human body flows up and down. The condition of the liquid flow is also the condition of the human blood pressure to measure the blood pressure of the human body on the blood pressure scale. The light emitted by the light-emitting diode forms a bright spot on the liquid column in the glass tube under the conduction of light to the light for observation. The heart rate measurement sensor displays the measured heart rate data on a heart rate digital display. When the overpressure is pressed, the liquid will turn on the alarm circuit, so that the red LED will illuminate and emit red light, and the peak horn will emit an audible warning overpressure alarm.

Claims

A closed mercury-free sphygmomanometer characterized in that it is used to inflate and press a sleeve (17) attached to a human arm with a pressurized inflation balloon (20) through a pressurized inflation tube (21). The bellows (15) made of metal or rubber-carbon material is pushed and contracted by the air vent pipe (16) and sealed in the pressure storage cylinder (14) to expand and contract with the change of air pressure, and the bellows of the telescopic tube is squeezed. The transparent or colored antifreeze liquid (8) enclosed therein is provided with a vertical tee (6) and a horizontal tee (9) with a light emitting diode (7) underneath the sealed connection and a blood pressure scale (2) outside. The glass tube (3), under the action of the combined ventilation principle, causes the antifreeze liquid to flow up and down in the glass tube along with the change of the air pressure, that is, the blood pressure; the upper end of the glass tube passes through an openable ventilation plug (24) The root snorkel (4) and a negative pressure cylinder (6) are sealingly connected, and the gas portion and the liquid portion on the inside of the glass tube are completely sealed, and the gas and the liquid flow up and down in the glass tube without being outside. The effect of atmospheric pressure.
A closed mercury-free sphygmomanometer according to claim 1, characterized in that an adjustment tube (10) is arranged in the middle of the lateral tee (9), and an adjustment is arranged on the upper side of the adjustment tube. Screw (11), a rubber piston (12) is fixed on the lower head of the adjusting screw. Turning the adjusting screw will drive the rubber piston up and down to adjust the volume of the antifreeze liquid (8) to adjust the antifreeze liquid in the glass tube and the blood pressure scale ( 2) Corresponding zero position.
A closed mercury-free sphygmomanometer according to claim 1, characterized in that a ejector (22) is arranged on the outer side of the scale (1) scale (2) of the sphygmomanometer to open the blood pressure meter and the sphygmomanometer The struts (27) in the lower cover of the box (26) will lift the ejector pin and cause the ejector pusher (23) to drive the venting plugs (24) that prevent the antifreeze liquid from flowing back to unblock the airflow while releasing the compression. The switch handle of the power switch (25) turns the power switch on to turn on the power supply circuit.
A closed mercury-free sphygmomanometer according to claim 1, wherein when the pressure is raised so that the column of the antifreeze liquid (8) rises beyond the glass tube (3) to reach the circuit contact (29), the liquid acts as a conductor. Turning on the alarm circuit causes the red LED (30) to illuminate to emit red light, and the buzzer (31) emits an audible alarm.
A closed mercury-free sphygmomanometer according to claim 1, wherein a heart rate measuring sensor (18) is disposed in the cuff (17), and the heart rate measuring sensor in the cuff sends the measured heart rate data Displayed on the digital heart rate display (19).