Gas circuit assembly and wearable electronic sphygmomanometer

Abstract

The air path assembly and the wearable electronic sphygmomanometer comprise an air box, an air pump, an air pressure sensor and an air valve, the air box comprises an air path channel, an air inlet is formed in the air box, and the air inlet is communicated with the air path channel; the air pump is arranged on the inner side of the air box and is communicated with the air inlet; the air pressure sensor is mounted on the air box and communicated with the air channel, and the air pressure sensor is arranged on the side, away from the air inlet, of the air pump; the air valve is installed on the air box and communicated with the air channel, and the air valve is arranged on the side, away from the air inlet, of the air pump. On one hand, the structure of the gas circuit assembly can be simplified, the overall size of the gas circuit assembly is reduced, the yield is improved, and carrying and using are convenient; and on the other hand, the sealing structure design of the gas circuit assembly is optimized, the possibility of leakage is reduced, and the gas is buffered, so that the pressure fluctuation noise caused in the gas charging or discharging process of the gas circuit assembly can be reduced, and the accuracy of pressure detection when the pressure sensor works is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to an air circuit component and a wearable electronic blood pressure monitor. Background Technology

[0002] An electronic blood pressure monitor generally includes a cuff and an air circuit assembly connected to the cuff. The air circuit assembly includes components such as an air pump, an air valve (electromagnetic deflation valve), and a pressure sensor connected to the air circuit. When the electronic blood pressure monitor is working, it can automatically control the air pump to inflate and deflate the cuff, and collect and process the human body pressure transmitted from the cuff through the air circuit assembly.

[0003] In traditional electronic blood pressure monitors, the air pump, pressure sensor, and air valve are typically independent components. These components are connected to the air circuit via air tubing and assembled using simple mechanical connections. While some existing electronic blood pressure monitors on the market have implemented air circuitry to some extent, issues such as insufficiently tight connections between components and complex air circuitry remain. This makes the air circuit, composed of traditional air tubing and connectors, susceptible to pressure fluctuations caused by air pump inflation or valve deflation due to the relatively uniform inner diameter of each component. This significantly impacts the pressure sensor, affecting measurement accuracy. Furthermore, the numerous components and assembly time, along with the many sealing points, increase the risk of leaks due to improper installation, reducing the overall yield rate of the electronic blood pressure monitor. Utility Model Content

[0004] In view of this, it is necessary to provide an air circuit component and a wearable electronic blood pressure monitor to solve the above-mentioned technical problems.

[0005] A gas path assembly, the gas path assembly comprising:

[0006] An air box, including an air passage, has an air inlet on it, and the air inlet is connected to the air passage;

[0007] An air pump is located inside the air box and connected to the air inlet;

[0008] A pressure sensor is installed on the air box and communicates with the air passage, and the pressure sensor is located on the side of the air pump away from the air inlet;

[0009] An air valve is installed on the air box and communicates with the air passage. The air valve is located on the side of the air pump away from the air inlet.

[0010] It is understandable that integrating the air pump, pressure sensor, and air valve onto the air chamber allows the air circuit assembly to be assembled using the air chamber as a mounting base. This simplifies the structure of the air circuit assembly, reduces its overall size, improves the yield rate of wearable electronic blood pressure monitors, and makes it easier to carry and use. Furthermore, it optimizes the sealing structure design of the air circuit assembly, reducing the possibility of leakage. In addition, extending the gas flow path through the air chamber's air passage and buffering the gas reduces pressure fluctuation noise during inflation or deflation, and improves the accuracy of pressure detection by the pressure sensor.

[0011] In one embodiment, the air passage includes a first passage, a second passage, and a connecting passage. The first passage and the second passage are arranged at both ends of the connecting passage and the air pump, and are respectively connected to the connecting passage.

[0012] The air inlet is connected to the first channel, and the air pressure sensor and the air valve are located at the second channel and are connected to the second channel.

[0013] It is understandable that when the gas flows from the first channel to the connecting channel, and then from the connecting channel to the second channel, the airflow direction will change. This reduces the speed of the gas when it finally flows to the pressure sensor, reduces the impact of the gas entering the pressure sensor afterward on the gas already stored in the pressure sensor, and improves the accuracy of pressure detection when the pressure sensor is working.

[0014] In one embodiment, the air box has at least one first buffer cavity wall formed at the location of the first channel;

[0015] The gas introduced into the first channel through the air inlet is used to change the airflow direction under the guidance of the first buffer cavity wall.

[0016] It is understandable that by using the first buffer chamber wall to guide the change in airflow direction when the gas flows in the first channel, the gas impact can be buffered, thereby reducing the gas flow speed, reducing the impact of subsequent gas entering the pressure sensor on the gas already stored in the pressure sensor, and improving the accuracy of pressure detection when the pressure sensor is working.

[0017] In one embodiment, the air box has at least one second buffer cavity wall formed at the location of the connecting channel;

[0018] The gas introduced into the connecting channel through the first channel is used to change the airflow direction under the guidance of the second buffer cavity wall.

[0019] It is understandable that by using the second buffer chamber wall to guide the change in airflow direction when the gas flows in the connecting channel, it can buffer the gas impact, reduce the gas flow speed, reduce the impact of subsequent gas entering the pressure sensor on the gas already stored in the pressure sensor, and improve the accuracy of pressure detection when the pressure sensor is working.

[0020] In one embodiment, the gas box has at least one third buffer cavity wall formed at the location of the second channel; the gas introduced into the second channel by the connecting channel can change the airflow direction under the guidance of the third buffer cavity wall.

[0021] It is understandable that by using the third buffer chamber wall to guide the change in airflow direction when the gas flows in the second channel, the gas impact can be buffered, thereby reducing the gas flow speed, reducing the impact of the gas on the pressure sensor, and improving the accuracy of pressure detection when the pressure sensor is working.

[0022] In one embodiment, the number of both the pressure sensor and the air valve is two, with each of the two pressure sensors corresponding to one of the two air valves.

[0023] The third buffer chamber wall is disposed between the two air valves.

[0024] Understandably, the inclusion of two pressure sensors and two valves serves as a double safety measure to meet the needs of wearable electronic blood pressure monitors.

[0025] In one embodiment, the gas box includes a gas box body, a gas box cover, and an end cover. The gas box cover and the end cover are both installed on the gas box body and are respectively assembled and sealed with the gas box body.

[0026] The air box body is configured as an integral structure, and the air box body is enclosed inward to form the air passage.

[0027] It is understandable that using a one-piece gas box body to construct the gas passage of the gas passage component allows the gas box body to be manufactured as a single piece, which facilitates the production and manufacturing of the gas box and reduces costs.

[0028] This application also claims protection for a wearable electronic blood pressure monitor, including a blood pressure monitor main unit, a cuff, and the aforementioned air circuit assembly;

[0029] The blood pressure monitor main unit and the air circuit assembly are both mounted on the cuff. The air pump, the air pressure sensor and the air valve are all electrically connected to the blood pressure monitor main unit, and the air box is connected and communicates with the air bladder inside the cuff.

[0030] In one embodiment, the air pump, the air pressure sensor, and the air valve are electrically connected to the blood pressure monitor main unit via cables;

[0031] The blood pressure monitor main unit and the air circuit assembly are connected by a flexible belt, which is used to accommodate the cable.

[0032] It is understandable that using a flexible strap to connect the blood pressure monitor main unit and the air circuit assembly allows the blood pressure monitor main unit and the air circuit assembly to be connected as a whole, which facilitates installation on the cuff, and also serves to hide and protect the cables used for electrical connection between the blood pressure monitor main unit and the air circuit assembly.

[0033] In one embodiment, the wearable electronic blood pressure monitor further includes an arc-shaped support plate, through which the blood pressure monitor main unit and the air circuit assembly can be mounted on the cuff;

[0034] The blood pressure monitor main unit includes a display screen, which is disposed through the arc-shaped support plate.

[0035] It is understandable that the curved support plate serves to support the installation of the blood pressure monitor main unit and the gas supply components on the cuff, thus preventing the cuff from affecting the blood pressure monitor main unit and the gas supply components during subsequent use.

[0036] The gas circuit assembly and wearable electronic blood pressure monitor claimed in this application integrate the air pump, air pressure sensor, and air valve into the air box, allowing the gas circuit assembly to be assembled using the air box as the mounting base. This simplifies the structure of the gas circuit assembly, reduces its overall size, improves the yield rate of wearable electronic blood pressure monitors using this gas circuit assembly, and makes it easier to carry and use. Furthermore, it optimizes the sealing structure design of the gas circuit assembly, reducing the possibility of leakage. Additionally, by utilizing the air passage of the air box to extend the gas flow path and buffer the gas, it reduces the noise caused by air pressure fluctuations during the inflation or deflation of the gas circuit assembly and improves the accuracy of air pressure detection when the air pressure sensor is working. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the gas path assembly provided in this application.

[0039] Figure 2This is a partial structural diagram of the gas path assembly provided in this application.

[0040] Figure 3 This is a structural diagram of the air box body and end cap assembly in this application.

[0041] Figure 4 This is a schematic diagram of the wearable electronic blood pressure monitor provided in this application, wherein the cuff is in a concealed state.

[0042] Figure 5 This is a schematic diagram of the assembly of the air circuit component, flexible belt, and blood pressure monitor main unit in this application.

[0043] Reference numerals: 1000, Wearable electronic blood pressure monitor; 100, Gas circuit assembly; 10, Gas box; 101, Air inlet; 102, Air pressure interface; 103, Air valve interface; 104, Cuff interface; 11, Gas box body; 12, Gas box cover; 13, End cap; 131, Protrusion; 110, Gas circuit channel; 111, First channel; 1111, First buffer chamber wall; 112, Second channel; 1131, Second buffer chamber wall; 113, Connecting channel; 1121, Third buffer chamber wall; 20, Air pump; 30, Air pressure sensor; 40, Air valve; 200, Blood pressure monitor main unit; 210, Display screen; 300, Flexible band; 400, Arc-shaped support plate. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] like Figures 1 to 3 As shown, the gas path assembly 100 provided in this application includes an air box 10, an air pump 20, a pressure sensor 30, and an air valve 40. The air box 10 includes an air passage 110, and an air inlet 101 is provided on the air box 10, communicating with the air passage 110. The air pump 20 is disposed inside the air box 10 and communicates with the air inlet 101. The pressure sensor 30 is mounted on the air box 10 and communicates with the air passage 110, and is disposed on the side of the air pump 20 away from the air inlet 101. The air valve 40 is mounted on the air box 10 and communicates with the air passage 110, and is disposed on the side of the air pump away from the air inlet 101. Here, the air valve 40 is an electromagnetic venting valve, and the gas path assembly 100 can release gas in the air passage 110 through the air valve 40 to meet the usage requirements of the wearable electronic blood pressure monitor 1000. It should be noted that the air pump 20 mentioned above is located inside the air box 10, specifically meaning that the air pump 20 is at least partially enclosed by the air box 10, and the three sides of the air pump 20 in this application are surrounded by the air box 10.

[0048] As can be seen from the above, in this application, the air pump 20, the air pressure sensor 30, and the air valve 40 are integrated into the air box 10, so that the air circuit assembly 100 can be assembled with the air box 10 as the mounting base. This simplifies the structure of the air circuit assembly 100, reduces the overall volume of the air circuit assembly 100, improves the yield of the wearable electronic blood pressure monitor 1000 using the air circuit assembly 100, and makes it easier to carry and use. On the other hand, it optimizes the sealing structure design of the air circuit assembly 100, reduces the possibility of leakage, and uses the air passage 110 of the air box 10 to extend the gas flow path and buffer the gas. This reduces the air pressure fluctuation noise caused by the inflation or deflation of the air circuit assembly 100 and improves the accuracy of air pressure detection when the air pressure sensor 30 is working. It should be noted that, since the air circuit assembly 100 of this application arranges the air pressure sensor 30 and the air valve 40 on the air box 10 and the air inlet 101 on opposite sides of the air pump 20, the travel distance of the gas when it flows in the air path channel 110 can be extended.

[0049] like Figure 1 , Figure 3As shown, in one embodiment, the gas box 10 includes a gas box body 11, a gas box cover 12, and an end cap 13. The gas box cover 12 and the end cap 13 are both mounted on the gas box body 11 and are respectively assembled and sealed to the gas box body 11. The gas box body 11 is configured as a single-piece structure, and a gas passage 110 is formed within the gas box body 11. That is, the gas passage assembly 100 uses the single-piece structure of the gas box body 11 to construct the gas passage 110, which facilitates the production and manufacturing of the gas box 10 and reduces costs. Here, a pressure interface 102 is provided on the gas box body 11, through which the pressure sensor 30 communicates with the gas passage 110. A valve interface 103 is provided on the end cap 13, through which the valve 40 communicates with the gas passage 110. It should be noted that the gas box body 11 of this application can be integrally injection molded or die-cast using engineering plastics (including but not limited to polycarbonate and polyphenylene sulfide) that are resistant to high temperature, have high strength and good gas sealing performance. Specifically, through precision mold design, a continuous and seamless internal gas passage 110 can be formed between the various functional areas on the gas box 10, ensuring that the gas can flow smoothly in the gas passage 110. Moreover, by utilizing the material properties of engineering plastics, it is not only convenient to disassemble and assemble the gas box cover 12 and end cover 13 on the gas box body 11, but also convenient to disassemble and assemble the air pump 20, air pressure sensor 30 and air valve 40 on the gas box 10.

[0050] like Figure 2 , Figure 3 As shown, in one embodiment, the air passage 110 includes a first passage 111, a second passage 112, and a connecting passage 113. The first passage 111 and the second passage 112 are arranged at both ends of the connecting passage 113 and the air pump 20, and are respectively connected to the connecting passage 113. This allows the gas to switch from the first passage 111 to the connecting passage 113, and the airflow direction will turn when switching from the connecting passage 113 to the second passage 112. This reduces the speed of the gas when it finally flows to the pressure sensor 30, thereby reducing the impact of the gas on the pressure sensor 30 and improving the accuracy of pressure detection when the pressure sensor 30 is working. Here, the air inlet 101 is connected to the first passage 111, and the pressure sensor 30 and the air valve 40 are located at the location of the second passage 112 and are connected to the second passage 112.

[0051] like Figure 2 , Figure 3As shown, in one embodiment, the gas box 10 has at least one first buffer cavity wall 1111 formed at the location of the first channel 111; the gas introduced into the first channel 111 by the air inlet 101 is used to change the airflow direction under the guidance of the first buffer cavity wall 1111. That is, the gas box 10 can use the first buffer cavity wall 1111 to guide the change of airflow direction when the gas flows in the first channel 111, which can buffer the gas impact, reduce the gas flow velocity, thereby reducing the impact of the gas on the pressure sensor 30 and improving the accuracy of pressure detection when the pressure sensor 30 is working. Here, the first buffer cavity wall 1111 can specifically be a wall surface on the first channel 111 directly opposite the air inlet 101. It should be noted that the gas box 10 has a cuff interface 104 at the location of the first channel 111, and can be connected to a cuff (not shown).

[0052] like Figure 2 , Figure 3 As shown, in one embodiment, the gas box 10 has at least one second buffer cavity wall 1131 formed at the location of the connecting channel 113; the gas introduced into the connecting channel 113 by the first channel 111 is used to change the airflow direction under the guidance of the second buffer cavity wall 1131. Similarly, the second buffer cavity wall 1131 can also serve to buffer gas impact. Here, the second buffer cavity wall 1131 can specifically be a wall surface of the connecting channel 113 facing the first channel 111.

[0053] like Figure 2 , Figure 3 As shown, in one embodiment, the gas box 10 has at least one third buffer cavity wall 1121 formed at the location of the second channel 112; the gas introduced into the second channel 112 by the connecting channel 113 can change its airflow direction under the guidance of the third buffer cavity wall 1121. Similarly, the third buffer cavity wall 1121 can also serve to buffer gas impact. Here, a protrusion 131 is formed on the end cap 13, and the third buffer cavity wall 1121 is disposed on the end face of the protrusion 131.

[0054] like Figure 1 , Figure 2As shown, in one embodiment, the number of pressure sensors 30 and air valves 40 is configured in pairs, with one pressure sensor 30 and two air valves 40 corresponding one-to-one; and a third buffer chamber wall 1121 is disposed between the two air valves 40. This provides double protection to meet the usage requirements of the wearable electronic blood pressure monitor 1000. Here, along the flow direction of gas in the second channel 112, the pressure sensor 30 located at the rear is the main pressure sensor, while the other pressure sensor 30 is the secondary pressure sensor, and correspondingly, the two air valves 40 are disposed on opposite sides of the two pressure sensors 30.

[0055] As can be seen from the above, the air box 10 of this application is designed with the air inlet 101 and the air pressure interface 102 facing away from each other. This allows the air pump 20 to discharge the gas into the air passage 110 through the air inlet 101. During the process of the gas flowing towards the air pressure interface 102, the air box 10 can buffer the gas with the first buffer chamber wall 1111, the second buffer chamber wall 1131, and the third buffer chamber wall 1121 respectively. This reduces the speed at which the gas finally enters the air pressure sensor 30, thereby reducing the impact of the gas on the air pressure sensor 30, improving the accuracy of the air pressure sensor 30 in detecting gas pressure, and improving the detection accuracy of the wearable electronic blood pressure monitor 1000 using the air passage component 100.

[0056] like Figure 4 As shown, this application also provides a wearable electronic blood pressure monitor 1000, including a blood pressure monitor main unit 200, a cuff, and the aforementioned air circuit assembly 100; the blood pressure monitor main unit 200 and the air circuit assembly 100 are both mounted on the cuff, wherein the air pump 20, the air pressure sensor 30 and the air valve 40 are all electrically connected to the blood pressure monitor main unit 200, and the air box 10 is connected and communicated with the air bladder (not shown) inside the cuff.

[0057] like Figure 4 , Figure 5 As shown, in one embodiment, the air pump 20, air pressure sensor 30, and air valve 40 are electrically connected to the blood pressure monitor main unit 200 via cables (not shown); wherein, the blood pressure monitor main unit 200 and the air circuit assembly 100 are connected by a flexible strip 300, which is used to accommodate the cables. This allows the blood pressure monitor main unit 200 and the air circuit assembly 100 to be connected as a whole, facilitating installation on the cuff, and also concealing and protecting the cables used for the electrical connection between the blood pressure monitor main unit 200 and the air circuit assembly 100.

[0058] like Figure 4As shown, in one embodiment, the wearable electronic blood pressure monitor 1000 further includes an arc-shaped support plate 400. The blood pressure monitor main unit 200 and the gas path assembly 100 can be mounted on the cuff via the arc-shaped support plate 400. This allows the arc-shaped support plate 400 to support the blood pressure monitor main unit 200 and the gas path assembly 100 on the cuff, thus preventing the cuff from affecting the blood pressure monitor main unit 200 and the gas path assembly 100 during subsequent use. Here, the blood pressure monitor main unit 200 includes a display screen 210, which is disposed through the arc-shaped support plate 400, allowing the user to interact with the blood pressure monitor main unit 200 through the display screen 210. This satisfies the user's need to control the wearable electronic blood pressure monitor 1000. It should be noted that the display screen 210 on the blood pressure monitor main unit 200 is exposed relative to the cuff.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A pneumatic circuit assembly, characterized in that, The gas path assembly (100) includes: An air box (10) includes an air passage (110), and an air inlet (101) is provided on the air box (10), which is connected to the air passage (110). An air pump (20) is disposed inside the air box (10) and communicates with the air inlet (101); A pressure sensor (30) is installed on the air box (10) and communicates with the air passage (110). The pressure sensor (30) is located on the side of the air pump (20) away from the air inlet (101). An air valve (40) is installed on the air box (10) and communicates with the air passage (110). The air valve (40) is located on the side of the air pump (20) away from the air inlet (101).

2. The gas path assembly according to claim 1, characterized in that, The air passage (110) includes a first passage (111), a second passage (112) and a connecting passage (113). The first passage (111) and the second passage (112) are arranged at both ends of the connecting passage (113) and the air pump (20), and are respectively connected to the connecting passage (113). The air inlet (101) is connected to the first channel (111), and the air pressure sensor (30) and the air valve (40) are located at the second channel (112) and are connected to the second channel (112).

3. The gas path assembly according to claim 2, characterized in that, The air box (10) has at least one first buffer cavity wall (1111) formed at the location of the first channel (111); The gas introduced into the first channel (111) through the air inlet (101) is used to change the airflow direction under the guidance of the first buffer cavity wall (1111).

4. The gas path assembly according to claim 2, characterized in that, The air box (10) has at least one second buffer cavity wall (1131) formed at the location of the connecting channel (113); The gas introduced into the connecting channel (113) through the first channel (111) is used to change the airflow direction under the guidance of the second buffer cavity wall (1131).

5. The gas path assembly according to claim 2, characterized in that, The gas box (10) has at least one third buffer cavity wall (1121) formed at the location of the second channel (112); the gas introduced into the second channel (112) by the connecting channel (113) can change the airflow direction under the guidance of the third buffer cavity wall (1121).

6. The pneumatic assembly according to claim 5, characterized in that, The number of the air pressure sensor (30) and the air valve (40) are both configured to be two, with the two air pressure sensors (30) corresponding one-to-one with the two air valves (40); The third buffer chamber wall (1121) is located between the two air valves (40).

7. The gas path assembly according to claim 1, characterized in that, The gas box (10) includes a gas box body (11), a gas box cover (12) and an end cover (13). The gas box cover (12) and the end cover (13) are both installed on the gas box body (11) and are respectively assembled and sealed with the gas box body (11). The air box body (11) is configured as an integral structure, and the air box body (11) is formed by enclosing the air passage (110) inward.

8. A wearable electronic blood pressure monitor, characterized in that, Includes a blood pressure monitor main unit (200), a cuff, and an airway assembly (100) as described in any one of claims 1 to 7; The blood pressure monitor main unit (200) and the air circuit assembly (100) are both mounted on the cuff. The air pump (20), the air pressure sensor (30) and the air valve (40) are all electrically connected to the blood pressure monitor main unit (200). The air box (10) is connected and communicates with the air bladder inside the cuff.

9. The wearable electronic blood pressure monitor according to claim 8, characterized in that, The air pump (20), the air pressure sensor (30), and the air valve (40) are electrically connected to the blood pressure monitor main unit (200) via cables; The blood pressure monitor main unit (200) and the air circuit assembly (100) are connected by a flexible strip (300), which is used to accommodate the cable.

10. The wearable electronic blood pressure monitor according to claim 8, characterized in that, The wearable electronic blood pressure monitor (1000) also includes an arc-shaped support plate (400), and the blood pressure monitor main unit (200) and the air circuit assembly (100) can be mounted on the cuff through the arc-shaped support plate (400); The blood pressure monitor main unit (200) includes a display screen (210), which is disposed through the arc-shaped support plate (400).

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