CN114903453A - a blood pressure monitor - Google Patents

Abstract

The present application discloses a sphygmomanometer, which is worn around the upper arm to be measured, and includes a cuff and a host. The cuff is worn around the upper arm to be measured along the length direction. The cuff includes an outer cover and an inflatable and contractible airbag set inside the outer cover. The host fixed to the cuff includes a pump unit for inflating the airbag and a valve unit for exhausting the airbag. and a pressure sensing unit that senses the internal pressure of the airbag; the airbag is connected to the host with an air inlet connected to the pump unit, an air outlet connected to the valve unit, and a monitoring hole connected to the pressure sensing unit. The air hole and the monitoring hole are communicated with the inner cavity of the airbag. Along the width direction of the cuff, the air intake hole, the air outlet hole and the monitoring hole are arranged at intervals in the airbag, the air inlet hole is arranged on one side of the air outlet hole, and the monitoring hole is arranged in the air outlet hole to improve the accuracy of the obtained blood pressure information.

Description

a blood pressure monitor

technical field

The present application relates to the field of medical equipment, and in particular, to a blood pressure monitor.

Background technique

Blood pressure refers to the lateral pressure acting on the blood vessel wall per unit area when blood flows in the blood vessel. The electronic sphygmomanometer has components such as an inflator pump, a deflation valve, a pressure sensor, etc. During the process of inflating the airbag in the cuff by the air pump or the airbag by the deflation valve, the pressure sensor will measure the pressure in the inner cavity of the airbag in the cuff. Measurement to obtain the blood pressure of the measured part. The inflator pump, deflation valve, and pressure sensor in the traditional sphygmomanometer on the market share a tube and are connected to the inner cavity of the airbag on the cuff. Interfering with the measurement of the pressure sensor, resulting in measurement errors; there are integrated sphygmomanometers on the market, but in order to tie the sphygmomanometer to the measured part, the host will be miniaturized, and the air pump, air relief valve, pressure sensor and air bag The connected holes are often in close proximity to each other, making it easy for the inflator to interfere with the measurement of the pressure sensor. In addition, some existing sphygmomanometers are spaced along the direction in which the cuff is wrapped around the upper arm to be tested, and multiple channels connecting the main unit and the airbag are arranged at intervals, resulting in the main unit occupying an excessively large size in its own width direction, which is not conducive to realizing the miniaturization of the main unit.

SUMMARY OF THE INVENTION

The present application provides a sphygmomanometer, which solves the problem that the air pump interferes with the measurement of the pressure sensor when measuring the blood pressure during the inflation process of the air pump.

The technical solution adopted in this application is:

A sphygmomanometer, worn around the upper arm being measured, including a cuff and a main unit. The cuff is worn around the upper arm to be measured along the length direction. The cuff includes an outer cover and an inflatable and contractible airbag set inside the outer cover. The host fixed to the cuff includes a pump unit for inflating the airbag and a valve unit for exhausting the airbag. and a pressure sensing unit that senses the internal pressure of the airbag; the side where the airbag is connected to the host is provided with an air inlet connected to the pump unit, an air outlet connected to the valve unit, and a monitoring hole connected to the pressure sensing unit. The air hole and the monitoring hole are communicated with the inner cavity of the airbag. Along the width direction of the cuff, the air intake hole, the air outlet hole and the monitoring hole are arranged at intervals in the airbag, the air inlet hole is arranged on one side of the air outlet hole, and the monitoring hole is arranged in the air outlet hole on the other side.

In the present application, the air intake holes, air outlet holes and monitoring holes are arranged along the width direction of the cuff. When the cuff is worn around the upper arm along its length direction, the air intake holes, air outlet holes and monitoring holes point to the distal end along the proximal end of the upper arm. The direction of the end is set, so that the air intake hole, the air outlet hole and the monitoring hole can be set along the extension direction of the upper arm, so as to avoid the monitoring hole being bent when wearing, so that the monitoring hole is out of the correct measurement position, which affects the accuracy of the blood pressure measurement of the pressure sensing unit. Sexual situations occur. Moreover, the air intake holes, the air outlet holes, and the monitoring holes are arranged along the width direction of the cuff, which can reduce the width direction of the host itself, which is beneficial to the miniaturization of the host. The air intake holes, the air outlet holes and the monitoring holes are arranged in the air bag at intervals along the width direction of the air bag, so as to avoid the gas entering the air bag through the air intake hole when the pump unit performs measurement during the process of inflating the air bag through the air intake hole. The gas at the monitoring hole connected to the pressure sensing unit causes large gas fluctuations, which in turn causes the gas monitored by the pressure sensing unit to fluctuate too much, thereby affecting the accuracy of the information obtained by the pressure sensing unit. The air inlet hole is located on one side of the air outlet hole, and the monitoring hole is located on the other side of the air outlet hole, so that the air outlet hole is spaced between the air inlet hole and the monitoring hole, thereby further reducing the pump unit inflating the airbag through the air inlet hole. When the pressure sensing unit is used to measure the pressure in the airbag through the monitoring hole, the gas near the air intake hole interferes with the gas near the monitoring hole, reducing the gas fluctuation at the monitoring hole, thereby obtaining better monitoring results.

In an embodiment of the present application, the sphygmomanometer further has a ventilation assembly, and each of the air intake hole, the air outlet hole, and the monitoring hole is directly inserted into the first air nozzle of the pump unit, the valve unit, and the pressure sensing unit through a set of ventilation assemblies. connected.

The air inlet, the air outlet and the monitoring hole are each directly connected to the first air nozzles of the pump unit, the valve unit and the pressure sensing unit through a set of ventilation components, so that the pump unit, the valve unit, the pressure sensing unit and the airbag are directly inserted The connection distance between the pump unit, the valve unit, the pressure sensing unit and the airbag can be reduced, the attenuation of gas fluctuation between the pressure sensing unit and the airbag can be reduced, and the pressure sensing unit can obtain more gas fluctuation information, so as to be more accurate Monitor gas fluctuations for more accurate blood pressure information. The direct insertion method is used to connect the air inlet, air outlet, monitoring hole and the first air nozzle of the pump unit, valve unit and pressure sensing unit.

In an embodiment of the present application, the ventilation assembly includes a second air nozzle corresponding to the air inlet hole, the air outlet hole, and the monitoring hole, respectively, and a plug-in tube connecting each of the first air nozzle and the second air nozzle. It can be directly connected to the airbag through a plug-in tube.

By inserting the pipe, the first air nozzle and the second air nozzle, the main unit is directly connected with the airbag, which is convenient for installation. Due to errors in the manufacturing process, when the error is large, there is a dislocation between the first air nozzle and the second air nozzle. By inserting the pipe, the dislocated first air nozzle and the second air nozzle can be connected, thereby improving fault tolerance. Rate.

In an embodiment of the present application, the ventilation assembly includes second air nozzles parallel to each other, which are respectively arranged in the air bag corresponding to the air inlet hole, the air outlet hole, and the monitoring hole. The host also includes a bottom case and a cover case that form an installation cavity. , the valve unit and the pressure sensing unit are fixed in the installation cavity, and the bottom case is provided with a through hole for inserting the second air nozzle.

The airbag corresponds to the air inlet hole, the air outlet hole and the monitoring hole which are respectively provided with the second air nozzles parallel to each other, so that the alignment is clear when the in-line connection is made, and the installation is more convenient. The bottom case is provided with a through hole for inserting the second air nozzle. When the air inlet hole, the air outlet hole and the monitoring hole are directly connected to the pump unit, the valve unit and the pressure sensing unit through a set of ventilation components, the bottom case can be connected to the sleeve. The strap is connected to secure the assembly of the bottom shell and the cover shell to the cuff.

In an embodiment of the present application, the ventilation assembly includes in-line air nozzles corresponding to the air inlet hole, air outlet hole, and monitoring hole, respectively, and each in-line air nozzle and the pump unit, the valve unit, and the pressure sensing unit respectively have The first air nozzle is plugged in, so that the host and the airbag can be directly connected to each other.

The main engine and the airbag are connected by the first air nozzle and the straight air nozzle, which can reduce the assembly process, thereby improving the assembly efficiency, thereby improving the production efficiency. The tightness of the connection between the unit and the bladder.

In an embodiment of the present application, when the sphygmomanometer is worn, the surrounding direction of the cuff is defined as the length direction of the air bag, the length of the air bag is L ₁ , and the distance between the host and one end of the air bag along the length direction of the air bag is L ₂ , 0.15L ₁ ≤L ₂ ≤0.3L ₁ .

至

以使压力感知单元能够对位于远心端的肱动脉进行测量。In an embodiment of the present application, in the wearing state of the sphygmomanometer, the monitoring hole is located at the distal end of the upper arm, and along the width direction of the cuff, the distance between the monitoring hole and the edge of the airbag near the distal end is equal to the total length of the airbag

to

This enables the pressure sensing unit to measure the brachial artery at the distal end.

至

压力感知单元能够对位于远心端的肱动脉进行测量，能够获得更加准确的血压数据。The distance between the monitoring hole and the edge of the air bag near the distal end is the width of the air bag

to

The pressure sensing unit can measure the brachial artery at the distal end to obtain more accurate blood pressure data.

至

In an embodiment of the present application, in the wearing state of the sphygmomanometer, the air inlet hole is located at the proximal end of the upper arm, and along the width direction of the cuff, the distance between the air inlet hole and the edge of the air bag near the proximal end is equal to the width of the air bag.

to

至

能够避免充气泵经进气孔对气囊进行充气的过程中进行血压测量时，经进气孔进入气囊中的气体使得监测孔处的气体产生影响，从而干扰由于人体脉搏引起的气囊中的气体波动，造成测量存在误差的情况发生。The distance between the air inlet hole and the edge of the air bag near the proximal end is the width of the air bag

to

It can avoid that when blood pressure is measured in the process of inflating the airbag by the air pump through the air inlet, the gas entering the airbag through the air inlet will affect the gas at the monitoring hole, thereby interfering with the gas fluctuation in the airbag caused by the human pulse. , resulting in measurement errors.

In an embodiment of the present application, the host has a long shell of the host, and the pump unit, the valve unit, and the pressure sensing unit are arranged in the inner cavity of the shell of the host.

In an embodiment of the present application, the width direction of the cuff is parallel to the length direction of the shell of the host, the width of the host is D ₁ , the length of the cuff is D ₂ ,

The proportional relationship between the width of the main unit and the length of the cuff makes it possible for the user to wrap the cuff around the upper arm, the width of the main unit will not interfere with the winding of the cuff, so as to prevent the main unit from being too wide for the cuff when the main unit is too wide. A situation occurs when the bladder in the belt causes a squeeze, which affects the air pressure in the bladder, thereby affecting the measurement.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

1 is a schematic structural diagram of a schematic embodiment of a sphygmomanometer;

2 is a schematic structural diagram of a schematic embodiment when a sphygmomanometer cuff is arranged around the upper arm;

3 is a schematic structural diagram of a schematic embodiment when components in the main body of the sphygmomanometer are connected to an airbag;

4 is a schematic diagram illustrating the width direction of the airbag in the sphygmomanometer;

FIG. 5 is a schematic structural diagram of an exemplary embodiment of a sphygmomanometer host.

In the picture:

1 cuff

11 Cover

12 Airbags

121 Air intake

122 Air vents

123 Monitoring holes

124 Airbag valve

2 hosts

21 Pump unit

22 valve unit

23 Pressure sensing unit

24 Bottom case

25 cover

201 main engine valve

202 Through hole

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will now be described with reference to the accompanying drawings. The same reference numerals in each figure indicate components with the same structure or similar structure but the same function.

As used herein, "schematic" means "serving as an example, instance, or illustration" and any illustration, embodiment described herein as "schematic" should not be construed as a preferred or advantageous one Technical solutions.

For the sake of brevity of the drawings, each drawing only schematically shows the parts related to the present application, and they do not represent the actual structure as a product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

FIG. 1 is a schematic structural diagram of an exemplary embodiment of a sphygmomanometer. FIG. 2 is a schematic structural diagram of an exemplary embodiment when a sphygmomanometer cuff is arranged around the upper arm. Fig. 3 is a schematic structural diagram of an exemplary embodiment when the components in the main body of the sphygmomanometer are connected with the air bag.

A sphygmomanometer is worn around the upper arm to be measured (refer to FIG. 2 ), and includes a cuff 1 and a main unit 2 (refer to FIG. 1 ). As shown in FIG. 1 , the cuff 1 includes a cover 11 and an inflatable inner cover 11. The airbag 12 can be retracted. Those skilled in the art to which the present application belongs can understand that the outer cover 11 can cover the airbag 12 so as to be arranged inside the outer cover 11 , and the airbag 12 can also be arranged inside the outer cover 11 , so that the airbag 12 can fit the outer cover 11 . The inner side of the cuff 1 is fixed, that is, when the cuff 1 surrounds the upper arm to be measured, the air bag 12 is arranged on the side of the outer cover 11 close to the skin; the main unit 2 is fixed on the cuff 1, and the main unit 2 includes a pump unit 21 for inflating the air bag 12, and a pump unit 21 for inflating the air bag 12. The valve unit 22 for air and the pressure sensing unit 23 for sensing the internal pressure of the air bag 12 (refer to FIG. 3 ).

As shown in FIG. 1 and FIG. 3 , the side connecting the airbag 12 to the host 2 is provided with an air inlet 121 connected to the pump unit 21 , an air outlet 122 connected to the valve unit 22 , and a monitoring hole connected to the pressure sensing unit 23 . 123. The air inlet hole 121, the air outlet hole 122, and the monitoring hole 123 communicate with the inner cavity of the airbag 12 (refer to FIG. 3). As shown in FIG. 1, along the width direction of the cuff 1, the air inlet hole 121, the air outlet hole 122 The monitoring holes 123 are arranged at intervals in the airbag 12, the air inlet holes 121 are arranged on one side of the air outlet holes 122, and the monitoring holes 123 are arranged on the other side of the air outlet holes 122, that is, as shown in FIG. 122. The monitoring holes 123 are arranged on the airbag 12 from top to bottom, and the air intake holes 121 and the monitoring holes 123 are located on both sides of the air outlet holes 122, respectively. When the blood pressure flows, a pulse wave will be generated, which will cause the gas in the air bag 12 to fluctuate. The sphygmomanometer senses the gas fluctuation in the air bag 12 through the pressure sensing unit 23, and indirectly obtains the pulse wave. After the conversion of the circuit, the blood pressure in the blood vessel is obtained indirectly. information. During the process of inflating the airbag 12 by the pump unit 21 through the air intake hole 121 , the pressure sensing unit 23 monitors the air pressure in the airbag through the monitoring hole 123 , so that when the blood pressure is indirectly measured, the airbag 12 enters the airbag 12 through the air intake hole 121 . The gas at the monitoring hole 123 fluctuates, and the blood pressure information obtained by the pressure sensing unit 23 has a large error, which affects the accuracy of the information obtained by the pressure sensing unit 23 . The sphygmomanometer is arranged on the airbag 12 at intervals along the width direction of the cuff 1 through the air inlet hole 121, the air outlet hole 122 and the monitoring hole 123, so as to increase the distance between the air inlet hole 121 and the monitoring hole 123 in the width direction of the cuff 1, and reduce the length of the blood pressure monitor. The influence of the gas entering the air intake hole 121 on the gas at the monitoring hole 123 is monitored, thereby improving the accuracy of the blood pressure information acquired by the pressure sensing unit 23 .

至

压力感知单元23能够对位于远心端的肱动脉进行测量，能够获得更加准确的血压数据；优选的，若在充气过程中获取血压信息，为使压力感知单元23通过监测孔123获取的气囊12中的气体数据更加的准确，血压计在佩戴状态下，进气孔121位于上臂的近心端，沿袖带1的宽度方向，进气孔121与气囊12靠近近心端边缘距离为气囊12宽度的

至

When the cuff 1 of the sphygmomanometer is worn around the upper arm along its length direction, the air intake hole 121, the air outlet hole 122, and the monitoring hole 123 are arranged along the direction from the proximal end of the upper arm to the distal end (as shown in FIG. 2), so as to inhale the air The hole 121, the air outlet hole 122, and the monitoring hole 123 can be arranged along the extension direction of the upper arm. Due to the physiological structure of the brachial artery at the upper arm, part of the brachial artery is covered by the biceps muscle, and part of the brachial artery at the elbow of the upper arm is not covered by the muscle. Coverage, so that monitoring here can obtain more accurate blood pressure data. The air inlet hole 121, the air outlet hole 122, and the monitoring hole 123 on the sphygmomanometer cuff 1 are arranged along the direction from the proximal end of the upper arm to the distal end, so that the monitoring hole 123 can be located at the brachial artery that is not covered by muscles, so that the pressure sensing unit 23 can monitor blood pressure more accurately through the monitoring hole 123 . 2 and 4, when the cuff 1 is arranged around the upper arm, the airbag 12 has a width direction extending along the axial direction of the cuff 1, that is, the width direction of the airbag 12 is the same as the width direction of the cuff 1. Preferably, the monitoring hole The distance between 123 and the edge of the air bag 12 near the distal end is the width of the air bag 12

to

The pressure sensing unit 23 can measure the brachial artery located at the distal end, and can obtain more accurate blood pressure data; The gas data obtained by the sphygmomanometer is more accurate. When the sphygmomanometer is worn, the air inlet 121 is located at the proximal end of the upper arm. Along the width direction of the cuff 1, the distance between the air inlet 121 and the edge of the air bag 12 near the proximal end is the width of the air bag 12. of

to

The air inlet hole 121, the air outlet hole 122 and the monitoring hole 123 are arranged along the direction from the proximal end of the upper arm to the distal end, which can prevent the monitoring hole 123 from being bent when wearing, so that the monitoring hole 123 is out of the correct measurement position and affects the pressure sensing unit 23 cases of the accuracy of measuring blood pressure. The air intake hole 121 is located on one side of the air outlet hole 122, and the monitoring hole 123 is located on the other side of the air outlet hole 122, so that the air intake hole 121 and the monitoring hole 123 are spaced by the air outlet hole 122, thereby further reducing the passage of the pump unit 21. When the air bag 12 is inflated by the air intake hole 121, and the pressure in the air bag 12 is measured by the pressure sensing unit 23 through the monitoring hole 123, the gas near the air intake hole 121 interferes with the gas near the monitoring hole 123, reducing monitoring Disturbance fluctuations from the air intake holes 121 at the holes 123, resulting in better monitoring results.

As shown in FIG. 3 , the sphygmomanometer also has a ventilation component. The air inlet hole 121 , the air outlet hole 122 and the monitoring hole 123 each pass through an air bag air nozzle 124 and the main air pump unit 21 , the valve unit 22 and the pressure sensing unit 23 respectively. The mouth 201 is directly connected, thereby reducing the length of the connecting pipeline between the host 2 and the airbag 12, avoiding the long connection pipeline between the airbag 12 and the pressure sensing unit 23 of the traditional sphygmomanometer, and the gas obtained by the pressure sensing unit 23 fluctuates less. When the situation occurs, the direct connection between the host 2 and the airbag 12 can improve the monitoring accuracy of the sphygmomanometer and ensure the accuracy of the obtained blood pressure data; at the same time, the direct connection can reduce the difficulty of assembly, improve the assembly efficiency, simplify the process, and improve the production efficiency; At the same time, due to the positions of the air inlet hole 121, the air outlet hole 122 and the monitoring hole 123, when the main unit 2 is directly connected to the air bag 12, the arrangement of the pump unit 21, the valve unit 22 and the pressure sensing unit 23 in the main unit 2 is more reasonable. It is arranged along the width direction of the cuff 1 as much as possible to reduce the arrangement of the main unit in the length direction of the cuff 1, so that when the cuff 1 is tied to the upper arm, the compression of the main unit 2 on the cuff 1 can be reduced, thereby reducing the measurement error.

Those skilled in the art to which this application pertains can understand that the direct-plug connection of the main engine 2 and the airbag 12 is not limited to the above-mentioned way of cooperating with the airbag valve 201 of the main engine and the airbag valve 124, and other methods can also be used, such as The main engine air nozzle 201 and the air bag air nozzle 124 are connected by a plug-in tube, and the two ends of the plug-in tube are respectively connected with the main body air nozzle 201 and the air bag air nozzle 124, so that the main body 2 and the air bag 12 are directly connected. The way that the two ends are respectively connected with the main engine air nozzle 201 and the air bag air nozzle 124 can improve the fault tolerance rate. The way of connecting the main engine air nozzle 201 and the air bag air nozzle 124 can make the main engine 2 and the air bag 12 directly connected, and can also ensure the sealing of the connection, and avoid the gas in the air bag 12 caused by air leakage. When the gas fluctuates, the pressure sensing unit 23 cannot obtain accurate blood pressure information.

As shown in FIG. 3 , the ventilation assembly includes airbag air nozzles 124 parallel to each other, which are respectively provided in the airbag 12 corresponding to the air inlet hole 121 , the air outlet hole 122 and the monitoring hole 123 . , the pump unit 21 , the valve unit 22 and the pressure sensing unit 23 are fixed in the installation cavity, and the bottom case 24 is provided with a through hole 202 into which the air bag air nozzle 124 is inserted.

The airbag 12 corresponds to the airbag air nozzles 124 parallel to each other, which are respectively provided with the air inlet hole 121 , the air outlet hole 122 and the monitoring hole 123 . The bottom case 24 is provided with a through hole 202 for inserting the airbag air nozzle 124. When the airbag air nozzle 124 is directly connected to the main air nozzle 201, the bottom case 24 can be fixed to the cuff 1, thereby connecting the bottom case 24 and the cover case 25. The composed assembly is fixed to the cuff 1, and the pump unit 21, the valve unit 22 and the pressure sensing unit 23 are fixed in the installation cavity formed by the bottom case 24 and the cover case 25, so that the main unit 2 can be fixed to the cuff 1, reducing the The process of fixing the main body 2 to the cuff 1 can improve production efficiency.

As shown in FIGS. 2 and 4 , when the blood pressure monitor is in the wearing state, the surrounding direction of the cuff 1 is defined as the length direction of the air bag 12 , and the length of the air bag 12 is L ₁ (refer to FIG. 4 ). 2. The distance from one end of the airbag 12 is L ₂ , and 0.15L ₁ ≤L ₂ ≤0.3L ₁ . In order to accurately describe the present embodiment, referring to FIG. 4 , L ₂ is the distance between the host 2 and the A side of the airbag 12 , and the A side shown in the figure does not represent the A side with the airbag 12 shown in FIG. 4 in the actual product, The A side of the airbag 12 is only used to better describe the present embodiment. In the above-mentioned manner, both ends of the cuff 1 are left with sufficient space to be connected to each other.

从而更好的避免主机外壳对气囊12造成不必要的挤压，影响血压的测量结果。As shown in FIG. 5 , the main body 2 of the sphygmomanometer has a long main body casing, and the pump unit 21 , the valve unit 22 and the pressure sensing unit 23 are arranged in the inner cavity of the main body casing. The long shell of the main unit enables the user to consciously place the main unit 2 at the biceps brachii during use, so that the cuff 1 is located in the correct binding position and improves the monitoring accuracy. Because the main body 2 has a long main body shell, when the user wraps the cuff 1 around the upper arm, the width of the main body 2 will not interfere with the winding of the cuff 1, so as to prevent the cuff 1 from being wound around the upper arm due to The width of the host 2 is too large, causing the host 2 to squeeze the airbag 12 in the cuff 1, affecting the air pressure in the airbag 12, thereby affecting the measurement. Preferably, the width direction of the cuff 1 is parallel to the length direction of the host shell, the width of the host 2 is D ₁ , the length of the cuff 1 is D ₂ ,

Thereby, it is better to avoid unnecessary squeezing of the airbag 12 by the casing of the main engine, which affects the measurement result of blood pressure.

Those skilled in the art to which the present application pertains can understand that the housing of the main unit in the sphygmomanometer is not limited to the shape of a long strip, but may also have other shapes, which will not be repeated here.

Those skilled in the art to which the present application pertains can understand that the pump unit 21 in the sphygmomanometer not only has the function of inflating the airbag 12 mentioned above, but in the process of using the valve unit 22 to deflate the airbag, the airbag 12 can also be exhausted by the pump unit 21, thereby improving the exhaust efficiency.

It should be understood that although this specification is described according to various embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present application, and they are not intended to limit the protection scope of the present application. Changes, such as combination, division or repetition of features, should be included within the scope of protection of this application.

Claims (10)

1. A sphygmomanometer worn around an upper arm to be measured, comprising:

the cuff is worn around the measured upper arm along the length direction and comprises an outer cover and an inflatable and contractible air bag arranged inside the outer cover;

the host machine is fixed on the cuff and comprises a pump unit for inflating the air bag, a valve unit for exhausting the air bag and a pressure sensing unit for sensing the internal pressure of the air bag;

an air inlet hole connected with the pump unit, an air outlet hole connected with the valve unit and a monitoring hole connected with the pressure sensing unit are arranged on one side of the air bag connected with the host, and the air inlet hole, the air outlet hole and the monitoring hole are communicated with an inner cavity of the air bag;

along the width direction of the cuff, the air inlet hole, the air outlet hole and the monitoring hole are arranged on the air bag at intervals, the air inlet hole is arranged on one side of the air outlet hole, and the monitoring hole is arranged on the other side of the air outlet hole.

2. A sphygmomanometer according to claim 1,

the sphygmomanometer is also provided with a ventilation assembly, and the air inlet hole, the air outlet hole and the monitoring hole are respectively connected with the pump unit, the valve unit and the pressure sensing unit through a group of first air nozzles of the ventilation assembly in a direct insertion mode.

3. A sphygmomanometer according to claim 2,

the ventilation assembly comprises a second air nozzle and an inserting pipe, wherein the air bag corresponds to the air inlet hole, the air outlet hole and the monitoring hole, the second air nozzle is arranged on the monitoring hole, the inserting pipe is connected with the first air nozzle and the second air nozzle, and the host machine and the air bag can be directly connected through the inserting pipe.

4. A sphygmomanometer according to claim 2,

the air bag is arranged in the air inlet hole, the air outlet hole and the monitoring hole, the air bag is arranged in the air inlet hole, the air outlet hole and the monitoring hole are respectively arranged in the air bag, the host machine further comprises a bottom shell and a cover shell which form an installation cavity, the pump unit, the valve unit and the pressure sensing unit are fixed in the installation cavity, and the bottom shell is provided with a through hole for inserting the second air bag.

5. A sphygmomanometer according to claim 2,

the ventilation assembly comprises straight-insertion air nozzles which are respectively arranged on the air bag corresponding to the air inlet hole, the air outlet hole and the monitoring hole, and each straight-insertion air nozzle is connected with a first air nozzle of each of the pump unit, the valve unit and the pressure sensing unit in an inserted mode, so that the main machine and the air bag can be connected in a straight-insertion mode.

6. A sphygmomanometer according to claim 1,

in the wearing state of the sphygmomanometer, the surrounding direction of the cuff is defined as the length direction of the air bag, and the length of the air bag is L ₁ The distance from the main machine to one end of the air bag is L along the length direction of the air bag ₂ ，0.15L ₁ ≤L ₂ ≤0.3L ₁ 。

7. A sphygmomanometer according to claim 1,

the sphygmomanometer is in a wearing state, the monitoring hole is located at the far end of the upper arm and along the width direction of the cuff, and the distance between the monitoring hole and the edge of the air bag close to the far end is the width of the air bag

To is that

So that the pressure sensing unit can measure the brachial artery at the distal end.

8. A sphygmomanometer according to claim 7,

when the sphygmomanometer is worn, the air inlet hole is positioned at the proximal end of the upper arm and along the width direction of the cuff, and the distance between the air inlet hole and the edge of the air bag close to the proximal end is the width of the air bag

To

9. A sphygmomanometer according to claim 1,

the main machine is provided with a long strip-shaped main machine shell, and the pump unit, the valve unit and the pressure sensing unit are arranged in a cavity inside the main machine shell.

10. A sphygmomanometer according to claim 9,

the width direction of the cuff is parallel to the length direction of the shell of the host, and the width of the host is D ₁ The length of the cuff is D ₂ ，

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