Three-way adapter and blood pressure measurer

Abstract

The three-way adapter comprises a base and an upper cover, the base comprises a first pipe connector, a second pipe connector and a base used for being connected with a main device in a clamped mode, and the first pipe connector and the second pipe connector are both arranged on the base in a protruding mode. The base is provided with a containing groove, a first gas flow channel used for being communicated with an air hole in main equipment and a second gas flow channel used for being communicated with an air hole in the blood pressure simulator, the first gas flow channel and the second gas flow channel are both communicated with the containing groove, and the first gas flow channel sequentially penetrates through the base and the first pipe connector from the inner wall of the containing groove. The second gas flow channel sequentially penetrates through the base and the second pipe joint from the inner wall of the accommodating groove; the upper cover is installed on the base, part of the upper cover is inserted into the containing groove, the upper cover is provided with a third gas flow channel used for being communicated with an air hole in the cuff, and the third gas flow channel is communicated with the containing groove. The three-way adapter is novel in structure, can be directly fixed on a main device, and does not cause interference to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of blood pressure detection equipment accessory structures, in particular to a three-way adapter and a blood pressure measuring device. Background Art

[0002] Hypertension is one of the chronic diseases with a huge number of cases. It is also an important cause of human death. The whole world is paying close attention to it. Therefore, it is important to understand the changes in blood pressure and know whether you have hypertension. Blood pressure can be measured with blood pressure measuring equipment. Usually, blood pressure measuring equipment needs to be certified as a Class II medical device. Both the domestic YY0670-2008 and the international ISO81060-2-2018 have made relevant requirements for blood pressure measurement equipment.

[0003] Traditional arm-type electronic blood pressure detection equipment is mainly used to detect blood pressure on the arm. It generally includes an electronic sphygmomanometer, an air bag and a blood pressure simulator. The three are connected by a three-way connector, wherein one end of the three-way connector is connected to the electronic sphygmomanometer, and the other two ends of the three-way connector are connected to the air bag and the blood pressure simulator respectively. Then the entire air path forms a complete air path. The electronic sphygmomanometer can be worn on the arm. It only needs to ensure the airtightness of the entire device to verify the consistency of the device's blood pressure algorithm and transmit the analog signal to the inside of the sphygmomanometer. However, the arm-type electronic blood pressure detection equipment is relatively large and extremely inconvenient to carry. It is only suitable for home-style measurement and cannot measure blood pressure anytime and anywhere. This cannot meet the requirements of real-time blood pressure control for people with hypertension, not to mention the need for blood pressure measurement when going out.

[0004] Later, wrist-wearable cuff-type blood pressure measuring devices came into being. They are popular in the market because of their small size, easy to carry, simple operation and the convenience of blood pressure measurement at any time. Cuff-type blood pressure measuring devices mainly measure the wrist. Cuff-type blood pressure measuring devices generally include a main device, a blood pressure simulator and a cuff. The main device, the blood pressure simulator and the cuff are also interconnected through a three-way connector. However, the three-way connector is a common and universal Y-shaped tracheal connector on the market, and its structure is simple and ordinary. The three-way connector cannot be directly fixed on the main device. The three-way connector needs to be connected to the main device through a soft rubber tube. When operating the cuff-type blood pressure measuring device, the three-way connector often causes certain interference to the user, and the user experience is extremely poor. Utility Model Content

[0005] The purpose of the utility model is to provide a three-way adapter and a blood pressure measuring device to solve the technical problem that the three-way adapter in the existing cuff-type blood pressure measuring device is a common and universal Y-shaped trachea adapter on the market, has a simple and ordinary structure, cannot be directly fixed on the main device, and the three-way adapter needs to be connected to the main device through a soft rubber tube. When operating the cuff-type blood pressure measuring device, the three-way adapter often causes certain interference to the user, resulting in a very poor user experience.

[0006] The utility model provides a three-way adapter, comprising:

[0007] A base, the base comprising a first pipe joint, a second pipe joint and a base for clamping with a main device, the first pipe joint and the second pipe joint are both convexly arranged on the base, the base has a receiving groove, a first gas flow channel for communicating with the air hole in the main device and a second gas flow channel for communicating with the air hole in the blood pressure simulator, the first gas flow channel and the second gas flow channel are both connected to the receiving groove, the first gas flow channel sequentially penetrates the base and the first pipe joint from the inner wall of the receiving groove, and the second gas flow channel sequentially penetrates the base and the second pipe joint from the inner wall of the receiving groove;

[0008] An upper cover is installed on the base, a part of the upper cover is inserted into the receiving groove, and the upper cover is provided with a third gas flow channel for communicating with the air hole in the cuff, and the third gas flow channel is connected with the receiving groove.

[0009] Furthermore, the upper cover includes a top plate and an annular plate protruding on one side of the top plate, the top plate is installed on the top of the base, the annular plate is inserted into the accommodating groove, the top plate is penetrated by a through hole, the annular plate is provided with an air guide hole, the through hole is connected to the air guide hole and constitutes the third gas flow channel with the air guide hole.

[0010] Further, the accommodating groove includes a positioning cavity recessed on the top of the base and a limiting cavity recessed on the inner side wall of the positioning cavity, the first gas flow channel penetrates the base and the first pipe joint in sequence from the bottom wall of the positioning cavity, the second gas flow channel penetrates the base and the second pipe joint in sequence from the inner side wall of the limiting cavity, and the annular plate is inserted into the positioning cavity and spaced apart from the bottom wall of the positioning cavity.

[0011] Further, the base includes a main body and an embedded part for cooperating with the installation groove in the main device, the embedded part is protruded from the bottom of the main body, the outer circumferential dimension of the embedded part is smaller than the outer circumferential dimension of the main body, the first pipe joint is protruded from the side of the embedded part away from the main body, the second pipe joint is protruded from the side surface of the main body, the accommodating groove is recessed on the main body, and the upper cover is installed on the main body.

[0012] Furthermore, the base also has two card slots for plugging with the bullet block in the main device, and the two card slots are arranged on the outer side wall of the embedding part with their backs to each other.

[0013] Furthermore, a storage groove is provided on the top of the base, the top plate is installed in the storage groove, and the receiving groove is recessed on the bottom wall of the storage groove.

[0014] Furthermore, an annular avoidance groove is provided on the bottom wall of the storage groove, and the storage groove is located in the middle of the annular avoidance groove.

[0015] Furthermore, the three-way adapter also includes a magnetic component for cooperating with the Hall element in the main device and the magnet in the cuff, and the base is also provided with an embedding groove, the magnetic component is installed in the embedding groove, and the upper cover covers the magnetic component in the embedding groove.

[0016] Further, the first pipe joint includes a first rod body and at least one first annular ridge protruding from an outer side wall of the first rod body, the first rod body protrudes from the bottom of the base, and the first gas flow channel sequentially penetrates the base and the first rod body from the bottom wall of the containing groove; and / or,

[0017] The second pipe joint includes a second rod body and at least one second annular ridge protruding from the outer wall of the second rod body. The second rod body is protruding from the outer wall of the base. The second gas flow channel runs through the base and the second rod body in sequence from the inner wall of the containing groove.

[0018] The utility model also provides a blood pressure measuring device, including a blood pressure simulator, a cuff, a main device and the three-way adapter as described above, wherein the three-way adapter is snapped onto the main device, the first gas flow channel is connected to the air hole in the main device, the second gas flow channel is connected to the air hole in the blood pressure simulator, and the third gas flow channel is connected to the air hole in the cuff.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The first gas flow channel in the three-way adapter of the utility model can be used to communicate with the air hole in the main device, the second gas flow channel can be used to communicate with the air hole in the blood pressure simulator, and the third gas flow channel can be used to communicate with the air hole in the cuff, thereby realizing the interconnection of the air paths between the main device, the blood pressure simulator and the cuff. The three-way adapter has a novel structure and can be directly fixed to the main device during use. When operating the blood pressure measuring instrument, the three-way adapter will not cause interference to the user, can improve the user experience, and is convenient for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of the three-way adapter provided in the embodiment of the utility model Figure 1 ;

[0022] Figure 2 for Figure 1 Exploded diagram of

[0023] Figure 3 A schematic diagram of the structure of the three-way adapter provided in the embodiment of the utility model Figure 2 ;

[0024] Figure 4 for Figure 3 Sectional view along line AA;

[0025] Figure 5 A schematic diagram of the structure of the upper cover provided by an embodiment of the utility model;

[0026] Figure 6 A cross-sectional view of an upper cover provided in an embodiment of the utility model;

[0027] Figure 7 A schematic diagram of the structure of the base provided in the embodiment of the utility model Figure 1 ;

[0028] Figure 8 A schematic diagram of the structure of the base provided in the embodiment of the utility model Figure 2 ;

[0029] Fig. 9 A schematic diagram of the structure of the main device provided by the embodiment of the utility model;

[0030] Fig.10 This is a structural schematic diagram of a three-way adapter provided in an embodiment of the utility model after being installed on a main device.

[0031] In the figure:

[0032] 10. Three-way adapter; 20. Base; 21. Base; 211. Receiving groove; 2111. Positioning cavity; 2112. Limiting cavity; 212. First gas flow channel; 213. Second gas flow channel; 214. Main body; 215. Embedding part; 216. Slot; 217. Receiving groove; 218. Avoiding groove; 219. Embedding groove; 22. First pipe joint; 221. First rod body; 222. First annular ridge; 23. Second pipe joint; 231. Second rod body; 232. Second annular ridge; 30. Upper cover; 31. Third gas flow channel; 32. Top plate; 321. Through hole; 33. Annular plate; 331. Air guide hole; 40. Main device; 41. Spring block; 42. Device body; 421. Mounting groove; 43. Button. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] See also Figures 1 to 6 ,as well as Figures 9 and 10 As shown, the embodiment of the utility model discloses a three-way adapter 10, which is applied to a wearable wrist blood pressure measuring device. The three-way adapter 10 includes a base 20 and an upper cover 30. The base 20 includes a base 21, a first pipe joint 22 and a second pipe joint 23. The base 21 is used to be snap-connected with a main device 40. The first pipe joint 22 and the second pipe joint 23 are respectively convexly arranged on two adjacent outer side walls of the base 21. The base 21 has a receiving groove 211, a first gas flow channel 212 and a second gas flow channel 213. The first gas flow channel 212 and the second gas flow channel 213 are both connected to the receiving groove 211. The receiving groove 211 is recessed at the top of the base 21. The first gas flow channel 212 passes through the base 21 and the first pipe joint 22 in sequence from the inner wall of the receiving groove 211, and the second gas flow channel 213 passes through the base 21 and the second pipe joint 23 in sequence from the inner wall of the receiving groove 211. The first gas flow channel 212 is used to communicate with the air hole in the main device 40, and the second gas flow channel 213 is used to communicate with the air hole in the blood pressure simulator. The upper cover 30 is installed on the base 21, and part of the upper cover 30 is inserted into the receiving groove 211. The upper cover 30 is provided with a third gas flow channel 31 for communicating with the air hole in the cuff. The third gas flow channel 31 is connected to the receiving groove 211, so as to realize the interconnection of the air paths between the main device 40, the blood pressure simulator and the cuff.

[0035] In this embodiment, the upper cover 30 includes a top plate 32 and an annular plate 33 protruding from one side of the top plate 32. The top plate 32 is penetrated by a through hole 321, and the annular plate 33 is provided with an air guide hole 331. The through hole 321 and the air guide hole 331 are arranged correspondingly, and the through hole 321 is connected with the air guide hole 331. The through hole 321 and the air guide hole 331 constitute the third gas flow channel 31. The top plate 32 is installed on the top of the base 21 by a sealant, and the two are combined together to ensure that the upper cover 30 The air tightness between the base 21, the annular plate 33 is inserted into the receiving groove 211, the air guide hole 331 is connected with the receiving groove 211, the third gas flow channel 31 is directly connected with the first gas flow channel 212 through the receiving groove 211, and the annular plate 33 and the bottom wall of the receiving groove 211 are spaced apart, and the gas in the second gas flow channel 213 can be connected with the third gas flow channel 31 or the first gas flow channel 212 through the gap between the annular plate 33 and the bottom wall of the receiving groove 211.

[0036] The accommodating groove 211 includes a positioning cavity 2111 and a limiting cavity 2112. The positioning cavity 2111 is recessed at the top of the base 21, and the limiting cavity 2112 is recessed on the inner side wall of the positioning cavity 2111. The limiting cavity 2112 is also recessed and extends from the top of the base 21 toward the middle of the base 21. This can reduce the manufacturing cost of the three-way adapter 10. The first gas flow channel 212 passes through the base 21 and the first pipe joint 22 in sequence from the bottom wall of the positioning cavity 2111. The second gas flow channel 213 passes through the base 21 and the second pipe joint 23 in sequence from the inner side wall of the limiting cavity 2112. The annular plate 33 is inserted into the positioning cavity 2111 and is spaced apart from the bottom wall of the positioning cavity 2111 so that the second gas flow channel 213 can be connected to the gas guide hole 331 or the first gas flow channel 212.

[0037] Please read further Figure 2 , Figures 6 to 10 In this embodiment, the base 21 includes a main body 214 and an embedded portion 215 for matching with the installation groove 421 in the main device 40. The embedded portion 215 is protruded from the bottom of the main body 214, and the outer circumferential dimension of the embedded portion 215 is smaller than the outer circumferential dimension of the main body 214. The first pipe joint 22 is protruded from a side of the embedded portion 215 away from the main body 214, that is, the first pipe joint 22 is equivalent to being protruded from the bottom of the base 21, and the second pipe joint 23 is protruded from an outer side of the main body 214. The accommodating groove 211 is recessed on the top of the main body 214, and the upper cover 30 is installed on the top of the main body 214 and partially inserted into the accommodating groove 211.

[0038] In some embodiments, the base 21 also has two card slots 216, and the two card slots 216 are arranged back to back on the outer wall of the embedded portion 215. The two card slots 216 are used to be inserted into the bullet block 41 in the main device 40 to prevent the three-way adapter 10 from falling off on the main device 40 due to the increase in air pressure, so that it is firmly connected to facilitate the three-way adapter 10 to be further connected to the main device 40.

[0039] A receiving groove 217 is further provided on the top of the base 21 . The top plate 32 is installed in the receiving groove 217 to reduce the overall height of the three-way adapter 10 . The receiving groove 211 is recessed on the bottom wall of the receiving groove 217 .

[0040] An annular avoidance groove 218 is also provided on the bottom wall of the storage groove 217. The storage groove 217 is located in the middle of the annular avoidance groove 218. The design of the avoidance groove 218 reduces the adhesion between the upper cover 30 and the bottom wall of the storage groove 217, so that the upper cover 30 can be quickly taken out of the storage groove 217.

[0041] The wrist circumference is different from the traditional arm circumference. When measuring blood pressure, the wrist circumference changes less than the arm circumference, but there are also differences in thickness, especially for extreme wrist circumferences. Therefore, one cuff cannot completely cover all people. Then, blood pressure measurement requires cuffs of different sizes to completely cover the population. This is also advocated in standard documents. In order to meet the measurement of all people, the blood pressure measuring device needs to identify the cuff. Therefore, in this embodiment, the three-way adapter 10 also includes a magnetic part, which is used to cooperate with the Hall element in the main device 40 and the magnet in the cuff. The base 21 is also provided with an embedding groove 219, and the magnetic part is installed in the embedding groove 219. The upper cover 30 covers the magnetic The component is embedded in the groove 219, and the magnetic component is a magnet. Specifically, a magnet that cooperates with the magnetic component is installed in the cuff, and the magnet can also be a magnet. According to the characteristics of the existence of N / S poles in magnetic materials, with the cooperation of the magnetic component, the direction of the magnet is switched, and it can be divided into two states, which are used to mark the large cuff and the medium cuff respectively. The cuff size suitable for the blood pressure monitor can be set according to different directions, so that the Hall element can automatically identify the size of the cuff and complete the adaptation of the internal algorithm of the blood pressure monitor. There is no need to disassemble the blood pressure monitor or manually set the size of the cuff, so as to eliminate error factors and quickly and conveniently complete the blood pressure consistency test.

[0042] The first pipe joint 22 includes a first rod body 221 and at least one first annular ridge 222. The first rod body 221 is protruded from the bottom of the base 21. The first annular ridge 222 is protruded from the outer wall of the first rod body 221. The first gas flow channel 212 passes through the base 21 and the first rod body 221 in sequence from the bottom wall of the accommodating groove 211. The first rod body 221 is inserted into the air hole of the main device 40 through the first annular ridge 222 thereon, so as to enhance the sealing of the connection between the first pipe joint 22 and the main device 40 during the assembly process to ensure that there is no leakage and the air tightness is guaranteed.

[0043] The second pipe joint 23 includes a second rod body 231 and at least one second annular ridge 232. The second rod body 231 is protruded on the outer wall of the base 21, and the second annular ridge 232 is protruded on the outer wall of the second rod body 231. The second gas flow channel 213 passes through the base 21 and the second rod body 231 in sequence from the inner wall of the accommodating groove 211. The second pipe joint 23 is actually connected to the air hole in the blood pressure simulator through a hose. The second rod body 231 is inserted into the hose through the second annular ridge 232 thereon, so as to enhance the sealing of the connection between the second pipe joint 23 and the hose during the assembly process, that is, it can ensure that the gas path will not cause the blood pressure signal to vary and attenuate due to being too thin, and will not be unable to be installed due to being too thick. In addition, the second pipe joint 23 is arranged on the side, which is also a highlight of the present design. In this way, it will not block the normal connection between the upper cover 30 and the cuff, and it can also be convenient to connect the blood pressure simulator.

[0044] Please continue reading Figure 4 ,as well as Figures 7 to 10 The utility model also discloses a blood pressure measuring device, including a blood pressure simulator, a cuff, a main device 40 and the three-way adapter 10 as described above, the three-way adapter 10 is snapped onto the main device 40, the first gas flow channel 212 is connected to the air hole in the main device 40, the second gas flow channel 213 is connected to the air hole in the blood pressure simulator, and the third gas flow channel 31 is connected to the air hole in the cuff, which can ensure the air tightness of the entire blood pressure measuring device and can also conveniently connect the blood pressure simulator, the main device 40 and the cuff. The blood pressure measuring device is small in size, easy to carry, simple to operate, can measure blood pressure anytime and anywhere, and can grasp the blood pressure situation at any time.

[0045] In some embodiments, the main device 40 includes a device body 42, a button 43, a driving assembly and two spring blocks 41. The button 43, the driving assembly and the two spring blocks 41 are all installed on the device body 42. The button 43 is connected to the two spring blocks 41 through the driving assembly. The device body 42 is provided with a mounting groove 421. The two spring blocks 41 are installed on the inner wall of the mounting groove 421. The air holes in the main device 40 are also provided on the device body 42. The embedded portion 215 in the three-way adapter 10 is installed in the mounting groove 421. The two spring blocks 41 are respectively inserted into the two slots 216 of the three-way adapter 10. By pressing the button 43, the two spring blocks 41 can be extended into or out of the slots 216, thereby realizing the quick disassembly and assembly between the three-way adapter 10 and the main device 40. The structure of the driving assembly is not restricted and can be designed as needed.

[0046] In some embodiments, the main device 40 further includes an air pump, which is mounted on the device body 42 . The air pump is connected to an air hole in the main device 40 and can inflate and deflate the cuff.

[0047] The working principle of cuff recognition is as follows:

[0048] 1. First, the magnetism in the large / medium-sized cuffs is uniformly defined as N / S poles respectively; 2. The magnetic part and the magnet are respectively installed in the embedding slot 219 and the cuff according to the defined magnetism; 3. The Hall element in the main device 40 can sense the polarity of the nearby magnetic material; 4. The size of the cuff can be determined based on the information feedback from the Hall element; 5. The information is transmitted to the main device 40, thereby adjusting the parameters in the main device 40.

[0049] The method of using the blood pressure monitor includes the following steps:

[0050] Step S101, firstly connect the blood pressure simulator, the cuff, the main device 40 and the three-way adapter 10;

[0051] Step S102, tying the cuff on the simulated arm;

[0052] Step S103, setting the blood pressure value to be simulated by the blood pressure simulator;

[0053] Step S104, starting the wrist blood pressure monitor to measure blood pressure;

[0054] Step S105, waiting for the measurement to be completed and recording the test results;

[0055] Step S106, performing measurement multiple times;

[0056] Step S107, modifying the blood pressure simulation value of the blood pressure simulator multiple times, and repeating steps S104, S105, and S106;

[0057] Step S108, evaluate the measurement results of the same signal multiple times to calculate the consistency of the blood pressure meter and obtain the corresponding results. Therefore, the blood pressure meter can help complete any simulator-related testing work, including the accuracy of the device's calculation of heart rate.

[0058] To summarize, the first gas flow channel 212 in the three-way adapter 10 of the utility model can be used to connect with the air hole in the main device 40, the second gas flow channel 213 can be used to connect with the air hole in the blood pressure simulator, and the third gas flow channel 31 can be used to connect with the air hole in the cuff, thereby realizing the interconnection of the air paths between the main device 40, the blood pressure simulator and the cuff. The three-way adapter 10 has a novel structure and can be directly fixed on the main device 40 during use. When operating the blood pressure monitor, the three-way adapter 10 will not cause interference to the user, can improve the user's experience, and is convenient for large-scale promotion.

[0059] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A three-way adapter, characterized in that: include: A base, the base comprising a first pipe joint, a second pipe joint and a base for clamping with a main device, the first pipe joint and the second pipe joint are both convexly arranged on the base, the base has a receiving groove, a first gas flow channel for communicating with the air hole in the main device and a second gas flow channel for communicating with the air hole in the blood pressure simulator, the first gas flow channel and the second gas flow channel are both connected to the receiving groove, the first gas flow channel sequentially penetrates the base and the first pipe joint from the inner wall of the receiving groove, and the second gas flow channel sequentially penetrates the base and the second pipe joint from the inner wall of the receiving groove; An upper cover is installed on the base, a part of the upper cover is inserted into the receiving groove, and the upper cover is provided with a third gas flow channel for communicating with the air hole in the cuff, and the third gas flow channel is connected with the receiving groove.

2. The three-way adapter according to claim 1, characterized in that: The upper cover includes a top plate and an annular plate protruding on one side of the top plate, the top plate is installed on the top of the base, the annular plate is inserted into the accommodating groove, the top plate is penetrated by a through hole, the annular plate is provided with an air guide hole, the through hole is connected with the air guide hole and forms the third gas flow channel with the air guide hole.

3. The three-way adapter according to claim 2, characterized in that: The accommodating groove includes a positioning cavity recessed on the top of the base and a limiting cavity recessed on the inner wall of the positioning cavity. The first gas flow channel penetrates the base and the first pipe joint in sequence from the bottom wall of the positioning cavity. The second gas flow channel penetrates the base and the second pipe joint in sequence from the inner wall of the limiting cavity. The annular plate is inserted into the positioning cavity and is spaced apart from the bottom wall of the positioning cavity.

4. The three-way adapter according to claim 1, characterized in that: The base includes a main body and an embedded part used to cooperate with the installation groove in the main equipment, the embedded part is protruded from the bottom of the main body, the outer circumference of the embedded part is smaller than the outer circumference of the main body, the first pipe joint is protruded from the side of the embedded part away from the main body, the second pipe joint is protruded from the side surface of the main body, the accommodating groove is recessed on the main body, and the upper cover is installed on the main body.

5. The three-way adapter according to claim 4, characterized in that: The base also has two card slots for plugging with the bullet block in the main device, and the two card slots are arranged on the outer side wall of the embedding part in opposite directions.

6. The three-way adapter according to claim 2, characterized in that: The top of the base is also provided with a receiving groove, the top plate is installed in the receiving groove, and the receiving groove is recessed on the bottom wall of the receiving groove.

7. The three-way adapter according to claim 6, characterized in that: An annular avoidance groove is also provided on the bottom wall of the storage groove, and the storage groove is located in the middle of the annular avoidance groove.

8. The three-way adapter according to claim 1, characterized in that: The three-way adapter also includes a magnetic component for cooperating with the Hall element in the main device and the magnet in the cuff. The base is also provided with an embedding groove, the magnetic component is installed in the embedding groove, and the upper cover covers the magnetic component in the embedding groove.

9. The three-way adapter according to claim 1, characterized in that: The first pipe joint includes a first rod body and at least one first annular ridge protruding from an outer wall of the first rod body, the first rod body protruding from the bottom of the base, and the first gas flow channel sequentially penetrates the base and the first rod body from the bottom wall of the containing groove; and / or, The second pipe joint includes a second rod body and at least one second annular ridge protruding from the outer wall of the second rod body. The second rod body is protruding from the outer wall of the base. The second gas flow channel runs through the base and the second rod body in sequence from the inner wall of the containing groove.

10. A blood pressure measuring device, characterized in that: It includes a blood pressure simulator, a cuff, a main device and a three-way adapter as described in any one of claims 1 to 9, the three-way adapter is snapped onto the main device, the first gas flow channel is connected to the air hole in the main device, the second gas flow channel is connected to the air hole in the blood pressure simulator, and the third gas flow channel is connected to the air hole in the cuff.

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