Sphygmomanometer

Abstract

The present invention relates to the technical field of medical devices, and discloses a sphygmomanometer, comprising: a housing; a gas guiding structure disposed within the housing and having a first ventilation port, a second ventilation port, and a third ventilation port; a gas pump and a deflation valve disposed within the housing and respectively connected to the first ventilation port and the second ventilation port of the gas guiding structure; a solenoid valve including a first port and a second port, the first port being connected to the third ventilation port of the gas guiding structure, and the second port being connected to the cuff of the sphygmomanometer; a pressure sensor disposed within the housing, the pressure sensor being connected to one of the first port and the second port, or connected to a fourth ventilation port of the gas guiding structure, or connected to a third port of the solenoid valve. The sphygmomanometer of the present invention has a small number of pipelines, simplifies the assembly process of the sphygmomanometer, helps to improve the production efficiency of the sphygmomanometer, and at the same time reduces the number of interfaces on the housing, can prevent air leakage at the interfaces of the sphygmomanometer, and avoid reducing the measurement accuracy of the sphygmomanometer due to air leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a sphygmomanometer. Background Art

[0002] Hypertensive diseases are currently one of the most common internal medicine diseases. Their distribution is very wide, and there are many hypertensive patients among the elderly and young populations. Hypertensive patients need to closely monitor their physical conditions and gradually treat the diseases through diet and living habits. In order to better monitor the blood pressure changes of patients, home sphygmomanometers have come into being.

[0003] The existing sphygmomanometer includes an air pump, a solenoid valve, a pressure sensor, and a deflation valve in the air circuit system, which need to be connected by four different lengths of air pipes respectively. At the same time, a four-way adapter is also needed to achieve airtightness of the air circuit. The number of parts in the sphygmomanometer is large, and the assembly process is numerous, seriously affecting the production efficiency and relatively high in cost. Summary of the Invention

[0004] In view of this, the present invention provides a sphygmomanometer to solve the defects of the existing sphygmomanometer, such as a large number of internal parts, numerous assembly processes, affecting production efficiency, and high production costs.

[0005] The present invention provides a sphygmomanometer, including: a housing; a gas guiding structure disposed in the housing, having a first ventilation port, a second ventilation port, and a third ventilation port that communicate with each other; an air pump and a deflation valve disposed in the housing and respectively connected to the first ventilation port and the second ventilation port of the gas guiding structure; a solenoid valve including a first port and a second port, the first port being connected to the third ventilation port of the gas guiding structure, and the second port of the solenoid valve passing through the housing and connected to the cuff of the sphygmomanometer; a pressure sensor disposed in the housing, the pressure sensor being connected to the first port, or the pressure sensor being connected to the second port, or a fourth ventilation port is formed on the gas guiding structure, the pressure sensor being connected to the fourth ventilation port, or the solenoid valve includes a third port, and the pressure sensor is connected to the third port.

[0006] Advantageous Effects: The sphygmomanometer of the present invention is connected to the air pump, the deflation valve, and the solenoid valve through a gas guiding structure, thereby simplifying the pipeline structure in the sphygmomanometer.

[0007] When the solenoid valve is a two-way solenoid valve, the pressure sensor can be optionally integrated on the first port of the solenoid valve, or integrated on the second port of the solenoid valve, or a fourth ventilation port is formed on the gas guiding structure, and the pressure sensor is connected to the fourth ventilation port. When the air pump works, the solenoid valve is adapted to connect the first port and the second port.

[0008] The air pump can inflate the air guiding structure. At this time, the air release valve is closed. One path of gas enters the pressure sensor through the solenoid valve or the air guiding structure, and the sensor detects the pressure data. Another path of gas enters the cuff through the second port of the solenoid valve to facilitate the measurement of blood pressure data. After detecting the diastolic blood pressure, the pressure relief valve is opened, and the air in the cuff is released through the air release valve to complete one measurement.

[0009] When the solenoid valve is a three-way valve, the pressure sensor is connected to the third port of the solenoid valve. When the air pump works, the solenoid valve is adapted to connect the first port, the second port, and the third port.

[0010] The air pump can inflate the air guiding structure. At this time, the air release valve is closed. One path of gas enters the pressure sensor through the third port of the solenoid valve, and the sensor detects the pressure data. Another path of gas enters the cuff through the second port of the solenoid valve to facilitate the measurement of blood pressure data. After detecting the diastolic blood pressure, the pressure relief valve is opened, and the air in the cuff is released through the air release valve to complete one measurement.

[0011] With such a setting, only one interface needs to be set on the housing of the sphygmomanometer of the present invention, avoiding the complexity of the connection process caused by a large number of interfaces on the housing, and the risk of air leakage at the interfaces, which may reduce the measurement accuracy of the sphygmomanometer.

[0012] Therefore, the number of pipelines in the sphygmomanometer of the present invention is small, which can reduce the number of parts of the sphygmomanometer, simplify the assembly process of the sphygmomanometer, contribute to improving the production efficiency of the sphygmomanometer, reduce the cost of the sphygmomanometer, and at the same time reduce the number of interfaces on the housing, which can prevent air leakage at the interfaces of the sphygmomanometer and avoid reducing the measurement accuracy of the sphygmomanometer due to air leakage.

[0013] In an alternative embodiment, the air guiding structure includes a first joint, a second joint, and a third joint. The first joint is in interference fit with the air pump, the second joint is in interference fit with the air release valve, and the third joint is in interference fit with the solenoid valve. The first air vent is formed at the first joint, the second air vent is formed at the second joint, and the third air vent is formed at the third joint.

[0014] Beneficial effects:

[0015] The first joint, the second joint, and the third joint can be respectively connected to the air pump, the air release valve, and the solenoid valve in a plug-in manner, and the operation is simple and fast.

[0016] In an alternative embodiment, the air guiding structure is curved, and part of the solenoid valve passes through the curved part of the air guiding structure.

[0017] Beneficial effects: With such a setting, the pipeline structure in the sphygmomanometer can be made more compact.

[0018] In an alternative embodiment, the solenoid valve is detachably connected to one side of the housing. A cuff interface is formed at the abutting position between the housing and the solenoid valve. The third port of the solenoid valve is connected to the cuff through the cuff interface.

[0019] Beneficial effects: With such an arrangement, it is convenient for the operator to connect the cuff to the third port of the solenoid valve, and the solenoid valve can be limited by the connection position between the cuff and the solenoid valve.

[0020] In an alternative embodiment, the first port of the solenoid valve faces the bottom wall of the housing. The air pump and the air release valve are located on the same side of the solenoid valve. The air guiding structure is limited between the solenoid valve and the bottom wall of the housing. The first air vent, the second air vent, and the third air vent are respectively arranged facing the directions of the air pump, the air release valve, and the solenoid valve.

[0021] Beneficial effects:

[0022] With such an arrangement, the air guiding structure can be constrained between the bottom of the solenoid valve and the bottom wall of the housing, and is limited by the interference fit between it and the solenoid valve, the air pump, and the air release valve. There is no need to add a fixing structure to limit the air guiding structure, which can simplify the number of parts in the housing.

[0023] In an alternative embodiment, the first port of the solenoid valve faces the bottom wall of the housing. The air pump and the air release valve are respectively located on both sides of the solenoid valve. The air guiding structure is limited between the solenoid valve and the bottom wall of the housing. The first air vent, the second air vent, and the third air vent are respectively arranged facing the directions of the air pump, the air release valve, and the solenoid valve.

[0024] In an alternative embodiment, the extending directions of the first joint and the second joint are parallel to each other, and the extending direction of the third joint is perpendicular to the extending directions of the first joint and the second joint.

[0025] In an alternative embodiment, the sphygmomanometer further includes

[0026] a first limiting portion adapted to limit the air release valve; and / or,

[0027] a second limiting portion adapted to limit the solenoid valve; and / or,

[0028] a third limiting portion adapted to limit the air pump.

[0029] In an alternative embodiment, the first limiting portion includes a limiting ring wall formed on the bottom wall of the housing. The limiting ring wall extends in a direction away from the bottom wall of the housing. A first avoiding notch is formed on the side of the limiting ring wall facing the air guiding structure. The first avoiding notch extends from the top end of the limiting ring wall towards the bottom wall of the housing. The second air vent of the air guiding structure passes through the first avoiding notch and is connected to the air release valve, or the air inlet of the air release valve passes through the first avoiding notch and is connected to the second air vent of the air guiding structure.

[0030] In an alternative embodiment, the second limiting portion includes a slot formed in the bottom wall of the housing. The slot extends in a direction away from the bottom wall of the housing. A second avoidance notch is formed on one side of the slot facing the air guiding structure. The second avoidance notch extends from the top end of the slot towards the bottom wall of the housing. The electromagnetic valve includes a main body portion and a connecting portion connected to the main body portion. The connecting portion is limited in the slot, and the main body portion passes through the second avoidance notch. The first port and the third port are provided on the main body portion, and the second port is provided on the connecting portion.

[0031] In an alternative embodiment, the third limiting portion includes two groups of limiting pieces formed on the bottom wall of the housing. The limiting pieces are adapted to limit the air pump.

[0032] Beneficial effects:

[0033] During the process of assembling the air pump, the air release valve and the electromagnetic valve into the housing in the prior art, the distances between the air pump, the air release valve and the electromagnetic valve often need to be changed. If the pipelines are connected first and then assembled, the pipelines are likely to interfere with the limiting structures in the housing during the assembly process, and the pipelines are easily pulled during the process of connecting the air pump, the air release valve and the electromagnetic valve and other structures to each other, resulting in air leakage at the connection points and reducing the measurement accuracy of the sphygmomanometer.

[0034] Therefore, during the assembly process of the sphygmomanometer in the prior art, the operator generally needs to first install components such as the air pump, the air release valve and the electromagnetic valve on the housing, and then connect the components such as the air pump, the air release valve and the electromagnetic valve to each other with pipelines. Since the space inside the sphygmomanometer is narrow, the operation of connecting the components such as the air pump, the air release valve and the electromagnetic valve with pipelines is relatively difficult, and the pipeline installation is inconvenient.

[0035] The limiting ring wall, the slot and the limiting pieces of this embodiment all extend in a direction away from the bottom wall of the housing, which enables the user to first connect the air guiding structure with the air pump, the air release valve and the electromagnetic valve to form a pre-assembled part, and then directly press-fit the pre-assembled part on the bottom wall. During the press-fitting process, the distances between the components will not change, so it will not cause pulling of the pipelines to result in air leakage.

[0036] Also, since the first avoidance notch extends from the top end of the limiting ring wall towards the bottom wall of the housing, and the second avoidance notch extends from the top of the slot towards the bottom wall of the housing. The pipelines can pass through between the two groups of limiting pieces. This enables the limiting structure not to interfere with the first joint, the second joint and the third joint of the air guiding structure during the process of press-fitting the pre-assembled part onto the bottom wall of the housing.

[0037] Therefore, the blood pressure monitor of this embodiment allows the operator to first connect the air pump, air relief valve, and solenoid valve using the air guide structure, and then plug the air relief valve, air pump, and solenoid valve into the limiting ring wall, slot, and limiting plate in a one-to-one correspondence. This makes operation simple and convenient, and avoids the difficulty of connecting components such as the air pump, air relief valve, and solenoid valve due to the limited space inside the blood pressure monitor, as well as the inconvenience of piping installation.

[0038] In an optional embodiment, the sphygmomanometer also includes a limit bracket detachably connected to the bottom wall of the shell, the limit bracket cover is arranged on the air release valve, the air pump and the solenoid valve, and forms a support structure suitable for resisting at least one of the air release valve, the air pump and the solenoid valve.

[0039] Beneficial effects:

[0040] The limiting bracket can prevent the deflation valve, air pump and solenoid valve from detaching from the first limiting part, the second limiting part and the third limiting part from above, causing noise inside the sphygmomanometer or even pulling the pipeline, affecting the air tightness of the sphygmomanometer.

[0041] In an optional embodiment, the support structure includes a first supporting protrusion suitable for abutting against the deflation valve, and the cross section of the first supporting protrusion is U-shaped.

[0042] Beneficial effects:

[0043] This arrangement can reduce the material consumption of the first supporting protrusion and ensure that the first supporting protrusion can press against multiple positions on the air release valve simultaneously, so as to reliably constrain the air release valve within the limiting ring wall.

[0044] In an optional embodiment, the support structure includes a second supporting protrusion suitable for abutting against the solenoid valve, and the cross-section of the second supporting protrusion is U-shaped.

[0045] Beneficial effects:

[0046] By such an arrangement, the material consumption of the second supporting protrusion can be reduced, and it is ensured that the second supporting protrusion can press against multiple positions on the solenoid valve at the same time, so as to reliably constrain the solenoid valve in the slot.

[0047] In an optional embodiment, the support structure includes a plurality of third support protrusions spaced apart along the length direction of the air pump, and an arc-shaped notch matching the outer circumference of the air pump is formed on the third support protrusion, and the arc-shaped notch is suitable for counteracting the air pump.

[0048] Beneficial effects:

[0049] The arc-shaped notch can limit the air pump in a way that allows accommodation. The third support convex part can be selected as a bump formed on the bracket. The third support convex part is a cylindrical structure, which helps to reduce the material consumption required for the third support convex part and ensures that the third support convex part can press against multiple positions on the air pump simultaneously, so as to reliably limit the air pump within the limit piece.

[0050] In an alternative embodiment, a first connection hole and a second connection hole through which a fastener can sequentially pass are respectively formed on the housing and the limit bracket.

[0051] In an alternative embodiment, the housing includes a bottom shell and an upper shell that can be snapped together with each other. The air guiding structure, the air pump, the solenoid valve, and the air pipe are limited within the bottom shell.

[0052] In an alternative embodiment, the sphygmomanometer further includes an air pipe, one end of which is connected to the third port of the solenoid valve, and the pressure sensor is connected to the air pipe. Description of the Drawings

[0053] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0054] Figure 1 It is a perspective view of a sphygmomanometer according to an embodiment of the present invention. In order to facilitate the display of the internal structure of the sphygmomanometer, the upper shell of the sphygmomanometer is hidden;

[0055] Figure 2 It is the solenoid valve of the sphygmomanometer according to an embodiment of the present invention;

[0056] Figure 3 It is the air guiding structure of the sphygmomanometer according to an embodiment of the present invention;

[0057] Figure 4 It is the air pump, the air guiding structure and the solenoid valve of the sphygmomanometer according to an embodiment of the present invention;

[0058] Figure 5 For Figure 1 The enlarged view of the first limiting part of the shown sphygmomanometer;

[0059] Figure 6 It is the air pump, the air guiding structure, the solenoid valve and the limit bracket of the sphygmomanometer according to an embodiment of the present invention;

[0060] Figure 7 It is the limit bracket of the sphygmomanometer according to an embodiment of the present invention;

[0061] Figure 8The air tube of the sphygmomanometer according to the embodiment of the present invention.

[0062] Explanation of reference numerals:

[0063] 1. Bottom case; 101. First limiting part; 1011. First avoidance notch; 102. Second limiting part; 103. Third limiting part; 104. First connection hole;

[0064] 2. Air guiding structure; 201. First ventilation port; 202. Second ventilation port; 203. Third ventilation port; 204. First joint; 205. Second joint; 206. Third joint;

[0065] 3. Air pump;

[0066] 5. Solenoid valve; 501. First port; 502. Second port; 503. Third port;

[0067] 6. Limiting bracket; 6011. First supporting convex part; 6012. Second supporting convex part; 6013. Third supporting convex part; 602. Second connection hole;

[0068] 7. Air tube. Detailed implementation manners

[0069] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0070] In the related art, a sphygmomanometer is provided, which includes a cuff, a housing, an air tube, an air pump, a deflation valve, a solenoid valve and a pressure sensor.

[0071] A first transfer air tube and a second transfer air tube are formed on the housing. Four branch tubes are formed on the air tube, and the four branch tubes are respectively connected to the first transfer air tube, the air pump, the deflation valve and the solenoid valve of the housing. A pressure sensor is hermetically connected to the second transfer air tube of the housing. The cuff is connected to the first transfer air tube and the second transfer air tube through two interfaces respectively. Thus, the airflow generated by the air pump can enter the cuff through the first transfer air tube, and the air pressure in the cuff can enter the pressure sensor through the second transfer air tube.

[0072] However, there are two connecting air pipes on the surface of the housing of this sphygmomanometer. During use, the user needs to connect the two branch pipes of the cuff to the first connecting air pipe and the second connecting air pipe of the housing respectively. This not only makes the installation process of the sphygmomanometer relatively complex, but also the number of branch pipes that need to be plugged and unplugged outside the housing is relatively large, increasing the risk of air leakage at the connection, resulting in a decrease in the measurement accuracy of the sphygmomanometer.

[0073] The following will describe embodiments of the present invention in conjunction with Figures 1 to 8 , describing embodiments of the present invention.

[0074] According to an embodiment of the present invention, there is provided a sphygmomanometer, including a housing, an air guiding structure 2, an air pump 3, a deflation valve, a solenoid valve 5 and a pressure sensor. Among them, the air guiding structure 2 is arranged inside the housing and has a first air vent 201, a second air vent 202 and a third air vent 203 that communicate with each other. The air pump 3 and the deflation valve are arranged inside the housing and are respectively connected to the first air vent 201 and the second air vent 202 of the air guiding structure 2. The solenoid valve 5 includes a first port 501 and a second port 502. The first port 501 is connected to the third air vent 203 of the air guiding structure 2, and the second port 502 of the solenoid valve 5 passes through the housing and is connected to the cuff of the sphygmomanometer. The pressure sensor is arranged inside the housing. The pressure sensor is connected to the first port 501 of the solenoid valve 5, or the pressure sensor is connected to the second port 502, or a fourth air vent is formed on the air guiding structure 2, and the pressure sensor is connected to the fourth air vent, or the solenoid valve 5 includes a third port 503, and the pressure sensor is connected to the third port 503.

[0075] In the sphygmomanometer of the present invention, an air guiding structure 2 is simultaneously connected to the air pump 3, the deflation valve and the solenoid valve 5, thereby simplifying the pipeline structure inside the sphygmomanometer. In addition, the solenoid valve 5 of the present application is preferably but not limited to a two-way solenoid valve or a three-way solenoid valve.

[0076] When the solenoid valve 5 is a two-way solenoid valve, the pressure sensor can be integrated on the first port 501 of the solenoid valve 5, or can be integrated on the second port 502 of the solenoid valve 5, or a fourth air vent is formed on the air guiding structure 2, and the pressure sensor is connected to the fourth air vent. When the air pump 3 works, the solenoid valve is adapted to connect the first port 501 and the second port 502.

[0077] The air pump 3 can inflate the air guiding structure 2. At this time, the deflation valve is closed. One path of gas enters the pressure sensor through the solenoid valve 5 or the air guiding structure 2, and the sensor detects the pressure data. The other path of gas enters the cuff through the second port 502 of the solenoid valve 5 to facilitate the measurement of blood pressure data. When the diastolic blood pressure is detected, the pressure relief valve is opened, and the air in the cuff is deflated through the deflation valve to complete a measurement.

[0078] When the solenoid valve 5 is a three-way valve, the pressure sensor is connected to the third port of the solenoid valve 5. When the air pump 3 operates, the solenoid valve is adapted to connect the first port 501, the second port 502 and the third port 503.

[0079] The air pump 3 can inflate the air guiding structure 2. At this time, the air release valve is closed. One path of gas enters the pressure sensor through the third port 503 of the solenoid valve 5, and the sensor detects the pressure data. The other path of gas enters the cuff through the second port 502 of the solenoid valve 5 to facilitate the measurement of blood pressure data. After the diastolic blood pressure is detected, the pressure relief valve is opened, and the air in the cuff is deflated through the air release valve to complete one measurement.

[0080] With such a setting, only one interface needs to be provided on the housing of the sphygmomanometer of the present invention, avoiding the complexity of the connection process caused by the large number of interfaces on the housing, and the risk of air leakage at the interfaces, which may reduce the measurement accuracy of the sphygmomanometer.

[0081] Therefore, the number of pipelines in the sphygmomanometer of the present invention is small, which can reduce the number of parts of the sphygmomanometer, simplify the assembly process of the sphygmomanometer, help improve the production efficiency of the sphygmomanometer, reduce the cost of the sphygmomanometer, and at the same time reduce the number of interfaces on the housing, which can prevent air leakage at the interfaces of the sphygmomanometer and avoid reducing the measurement accuracy of the sphygmomanometer due to air leakage.

[0082] Among them, the solenoid valve 5 is preferably but not limited to a three-way valve.

[0083] In one embodiment, as Figure 3 shown, the air guiding structure 2 includes a first joint 204, a second joint 205 and a third joint 206. The first joint 204 is in interference fit with the air pump 3. The second joint 205 is in interference fit with the air release valve. The third joint 206 is in interference fit with the solenoid valve 5. The first air vent 201 is formed at the first joint 204. The second air vent 202 is formed at the second joint 205. The third air vent 203 is formed at the third joint 206.

[0084] The first joint 204, the second joint 205 and the third joint 206 can be respectively connected to the air pump 3, the air release valve and the solenoid valve 5 in a plug-in manner, and the operation is simple and fast.

[0085] In one embodiment, the air guiding structure 2 is curved, and a part of the solenoid valve 5 passes through the curved part of the air guiding structure 2. With such a setting, the pipeline structure in the sphygmomanometer can be made more compact.

[0086] As a transformable embodiment, the air guiding structure 2 is a straight pipe, and the first joint 204, the second joint 205 and the third joint 206 adapted to be respectively connected to the air pump 3, the air release valve and the solenoid valve 5 are formed on the straight pipe.

[0087] In one embodiment, the solenoid valve 5 is detachably connected to one side of the housing. A cuff interface is formed at the contact position between the housing and the solenoid valve 5. The third port 503 of the solenoid valve 5 is connected to the cuff through the cuff interface.

[0088] By such an arrangement, it is not only convenient for the operator to connect the cuff to the third port 503 of the solenoid valve 5, but also the solenoid valve 5 can be limited by the connection position between the cuff and the solenoid valve 5.

[0089] In a transformable embodiment, the solenoid valve 5 is connected to the top or bottom of the housing.

[0090] In one embodiment, as Figure 1 shown, the first port 501 of the solenoid valve 5 is arranged towards the bottom wall of the housing. The air pump 3 and the air release valve are located on the same side of the air guiding structure 2. The air guiding structure 2 is limited between the solenoid valve 5 and the bottom wall. The first air vent 201, the second air vent 202 and the third air vent 203 are respectively arranged towards the directions of the air pump 3, the air release valve and the solenoid valve 5.

[0091] By such an arrangement, the air guiding structure 2 can be constrained between the bottom of the solenoid valve 5 and the bottom wall of the housing, and is limited by the interference fit between it and the solenoid valve 5, the air pump 3 and the air release valve. There is no need to add a fixing structure to limit the air guiding structure 2, which can simplify the number of parts in the housing.

[0092] The first air vent 201, the second air vent 202 and the third air vent 203 are respectively arranged towards the directions of the air pump 3, the air release valve and the solenoid valve 5. It is convenient for the operator to connect the air guiding structure 2 to the solenoid valve 5, the air pump 3 and the air release valve, makes the air flow in the air guiding structure 2 smoother, and avoids an angle between the extending direction of the pipeline and the air outlet direction.

[0093] As a transformable implementation manner, the first port 501 of the solenoid valve 5 is arranged towards the bottom wall of the housing. The air pump 3 and the air release valve are respectively located on both sides of the solenoid valve 5. The air guiding structure 2 is limited between the solenoid valve 5 and the bottom wall of the housing. The first air vent 201, the second air vent 202 and the third air vent 203 are respectively arranged towards the directions of the air pump 3, the air release valve and the solenoid valve 5.

[0094] Preferably, in this embodiment, the extending directions of the first joint 204 and the second joint 205 are parallel to each other. The extending direction of the third joint 206 is perpendicular to the extending directions of the first joint 204 and the second joint 205.

[0095] In one embodiment, the sphygmomanometer further includes: a first limiting portion 101, which is adapted to limit the air release valve; and / or,

[0096] a second limiting portion 102, which is adapted to limit the solenoid valve 5; and / or,

[0097] A third limiting part 103, which is adapted to limit the air pump 3.

[0098] In one embodiment, as Figure 5 shown, the first limiting part 101 includes a limiting ring wall formed on the bottom wall of the housing. The limiting ring wall extends in a direction away from the bottom wall of the housing. A first avoidance notch 1011 is formed on one side of the limiting ring wall facing the air guiding structure 2. The first avoidance notch 1011 extends from the top end of the limiting ring wall towards the bottom wall of the housing. The second air vent 202 of the air guiding structure 2 passes through the first avoidance notch 1011 and is connected to the pressure relief valve, or the air inlet of the pressure relief valve passes through the first avoidance notch and is connected to the second air vent 202 of the air guiding structure 2.

[0099] For example, in the embodiment as Figure 1 shown, the second joint 205 of the air guiding structure 2 passes through the first avoidance notch 1011 and is connected to the air inlet of the pressure relief valve.

[0100] In one embodiment, the second limiting part 102 includes a slot formed on the bottom wall of the housing. The slot extends in a direction away from the bottom wall of the housing. A second avoidance notch is formed on one side of the slot facing the air guiding structure 2. The second avoidance notch extends from the top end of the slot towards the bottom wall of the housing. The solenoid valve 5 includes a main body part and a connecting part connected to the main body part. The connecting part is limited in the slot, and the main body part passes through the second avoidance notch. The first port 501 and the third port 503 are arranged on the main body part, and the second port 502 is arranged on the connecting part.

[0101] By arranging like this, when the connecting part of the solenoid valve 5 is inserted into the slot, the second port 502 can be tightly attached to the side wall of the housing and connected to the cuff. The main body part of the solenoid valve 5 passes through the second avoidance notch, which can not only facilitate the connection between the first port 501 of the solenoid valve 5 and the air guiding structure 2, but also form a gap for limiting the air guiding structure 2 between the main body part of the solenoid valve 5 and the bottom wall of the housing.

[0102] In one embodiment, the third limiting part 103 includes at least two groups of limiting pieces formed on the bottom wall of the housing. The limiting pieces are adapted to limit the air pump 3.

[0103] In the prior art, during the process of assembling the air pump 3, the air release valve and the solenoid valve 5 into the housing. The distance between the air pump 3, the air release valve and the solenoid valve 5 often needs to be changed. If the pipeline is connected first and then assembled, the pipeline is likely to interfere with the limiting structure in the housing during the assembly process, and the pipeline is easily pulled during the process of connecting the air pump 3, the air release valve and the solenoid valve 5 and other structures to each other, resulting in air leakage at the connection, reducing the measurement accuracy of the sphygmomanometer.

[0104] Therefore, during the assembly process of the sphygmomanometer in the prior art, the operator generally needs to first install the air pump 3, the air relief valve, the solenoid valve 5 and other components on the shell, and then use pipelines to connect the air pump 3, the air relief valve, the solenoid valve 5 and other components to each other. Due to the small space inside the sphygmomanometer, the operation of using pipelines to connect the air pump 3, the air relief valve, the solenoid valve 5 and other components is relatively difficult, and the pipeline installation is inconvenient.

[0105] The limiting ring wall, slot and limiting plate of this embodiment all extend in the direction away from the bottom wall of the shell, which allows the user to first connect the air guide structure 2 with the air pump 3, the air relief valve and the solenoid valve 5 to form a pre-assembled part, and then press the pre-assembled part directly on the bottom wall. During the pressing process, the distance between the various components will not change, so it will not cause pulling of the pipeline to cause air leakage.

[0106] Furthermore, because the first relief notch 1011 extends from the top of the retaining ring wall toward the bottom wall of the housing, and the second relief notch extends from the top of the slot toward the bottom wall of the housing, the pipeline can pass between the two sets of retaining plates. This ensures that during the process of press-fitting the pre-assembled component onto the bottom wall of the housing, the retaining structure will not interfere with the first joint 204, the second joint 205, and the third joint 206 of the air guide structure 2.

[0107] Therefore, the blood pressure monitor of this embodiment allows the operator to first connect the air pump 3, the air relief valve, and the solenoid valve 5 using the air guide structure 2, and then plug the air relief valve, air pump 3, and the solenoid valve 5 into the limiting ring wall, the slot, and the limiting plate in a one-to-one correspondence. This makes operation simple and convenient, and avoids the difficulty of connecting the air pump 3, the air relief valve, and the solenoid valve 5 due to the limited space inside the blood pressure monitor, as well as the inconvenience of piping installation.

[0108] In one embodiment, Figure 6 As shown, the sphygmomanometer further includes a limit bracket 6 detachably connected to the bottom wall of the housing. The limit bracket 6 is provided on the air release valve, the air pump 3, and the solenoid valve 5. A support structure suitable for abutting against at least one of the air release valve, the air pump 3, and the solenoid valve 5 is formed on the limit bracket 6. The limit bracket 6 can prevent the air release valve, the air pump 3, and the solenoid valve 5 from detaching from the first limit portion 101, the second limit portion 102, and the third limit portion 103 from above, causing noise inside the sphygmomanometer or even pulling the pipeline, affecting the air tightness of the sphygmomanometer.

[0109] In one embodiment, Figure 7 As shown, the support structure includes a first supporting protrusion 6011 adapted to abut against the air release valve. The cross-section of the first supporting protrusion 6011 is preferably U-shaped, capable of abutting against the top of the air release valve. This configuration reduces the material consumption of the first supporting protrusion 6011 while ensuring that the first supporting protrusion 6011 can simultaneously press against multiple locations on the air release valve, thereby reliably constraining the air release valve within the retaining ring wall.

[0110] As a transformable embodiment, the first support convex part 6011 can be selected as a convex block suitable for abutting against the top end of the air release valve.

[0111] In one embodiment, the support structure includes a second support convex part 6012 suitable for abutting against the solenoid valve 5. The cross-section of the second support convex part 6012 is U-shaped. By setting it in this way, both the material consumed by the second support convex part 6012 can be reduced, and it is ensured that the second support convex part 6012 can simultaneously press against multiple positions on the solenoid valve 5 to reliably restrain the solenoid valve 5 in the slot.

[0112] In one embodiment, the support structure includes a plurality of third support convex parts 6013 arranged at intervals along the length direction of the air pump 3. An arc-shaped notch matching the outer periphery of the air pump 3 is formed on the third support convex part 6013, and the arc-shaped notch is suitable for abutting against the air pump 3. The arc-shaped notch can limit the position of the air pump 3 in an accommodating manner.

[0113] The third support convex part 6013 can be selected as a convex block formed on the bracket. Preferably, in this embodiment, the third support convex part 6013 is a cylindrical structure, which helps to reduce the material consumed by the third support convex part 6013 and ensures that the third support convex part 6013 can simultaneously press against multiple positions on the air pump 3 to reliably limit the position of the air pump 3 in the limit piece.

[0114] In one embodiment, a first connection hole 104 and a second connection hole 602 allowing a fastener to pass through in sequence are respectively formed on the housing and the limit bracket 6. The fastener is suitable for passing through the first connection hole 104 and the second connection hole 602 to reliably limit the limit bracket 6 on the housing. As a transformable embodiment, the limit bracket 6 can also be selected to be connected to the bottom wall of the housing through connection structures such as a clamping assembly, a riveting assembly or a magnetic attraction assembly.

[0115] In one embodiment, the housing includes a bottom shell 1 and an upper shell that can be buckled to each other, and the air guide structure 2, the air pump 3, the solenoid valve 5 and the air pipe 7 are limited in the bottom shell 1.

[0116] In one embodiment, as Figure 8 shown, the sphygmomanometer further includes an air pipe 7, one end of which is connected to the third port 503 of the solenoid valve 5, and the other end is connected to a pressure sensor. The air pipe 7 is preferably a soft silicone straight pipe, which can facilitate the pressure sensor to detect pressure data. Preferably, a buckle is further provided on the housing on the side of the limit ring wall away from the solenoid valve 5, and the air pipe 7 can be selected to be wound around the outside of the limit ring wall and clamped with the buckle.

[0117] In summary, the sphygmomanometer of the present invention can overcome the defects of the existing sphygmomanometer, such as a large number of internal parts, numerous assembly processes, affecting production efficiency, and high production costs.

[0118] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A sphygmomanometer, characterized in that, Comprising: A housing; An air guiding structure (2), which is arranged inside the housing and has a first ventilation port (201), a second ventilation port (202) and a third ventilation port (203) that are interconnected; An air pump (3) and a pressure relief valve, which are arranged inside the housing and are respectively connected to the first ventilation port (201) and the second ventilation port (202) of the air guiding structure (2); A solenoid valve (5), which includes a first port (501) and a second port (502), the first port (501) is connected to the third ventilation port (203) of the air guiding structure (2), and the second port (502) of the solenoid valve (5) passes through the housing and is connected to the cuff of the sphygmomanometer; A pressure sensor, which is arranged inside the housing, the pressure sensor is connected to the first port (501), or the pressure sensor is connected to the second port (502), or the solenoid valve (5) includes a third port (503), and the pressure sensor is connected to the third port (503); The air guiding structure (2) includes a first joint (204), a second joint (205) and a third joint (206), the first joint (204) has an interference fit with the air pump (3), the second joint (205) has an interference fit with the pressure relief valve, the third joint (206) has an interference fit with the solenoid valve (5), the first ventilation port (201) is formed at the first joint (204), the second ventilation port (202) is formed at the second joint (205), and the third ventilation port (203) is formed at the third joint (206); The air guiding structure (2) is curved, and a part of the solenoid valve (5) passes through the curved part of the air guiding structure (2).

2. The sphygmomanometer according to claim 1, characterized in that, The solenoid valve (5) is detachably connected to one side of the housing, a cuff interface is formed at the place where the housing abuts against the solenoid valve (5), and the third port (503) of the solenoid valve (5) is connected to the cuff through the cuff interface.

3. The sphygmomanometer according to claim 2, characterized in that, The first port (501) of the solenoid valve (5) is arranged towards the bottom wall of the housing, the air pump (3) and the pressure relief valve are located on the same side of the air guiding structure (2), the air guiding structure (2) is limited between the solenoid valve (5) and the bottom wall of the housing, and the first ventilation port (201), the second ventilation port (202) and the third ventilation port (203) are respectively arranged towards the directions of the air pump (3), the pressure relief valve and the solenoid valve (5).

4. The sphygmomanometer according to claim 2, wherein, The first port (501) of the solenoid valve (5) is arranged towards the bottom wall of the housing, the air pump (3) and the pressure relief valve are respectively located on both sides of the solenoid valve (5), the air guiding structure (2) is limited between the solenoid valve (5) and the bottom wall of the housing, and the first ventilation port (201), the second ventilation port (202) and the third ventilation port (203) are respectively arranged towards the directions of the air pump (3), the pressure relief valve and the solenoid valve (5).

5. The sphygmomanometer according to claim 1, characterized in that, The extending directions of the first joint (204) and the second joint (205) are parallel to each other, and the extending direction of the third joint (206) is perpendicular to the extending directions of the first joint (204) and the second joint (205).

6. The sphygmomanometer according to any one of claims 1 to 5, characterized in that, Further included is a first limiting portion (101) adapted to limit the air release valve; and / or, a second limiting portion (102) adapted to limit the solenoid valve (5); and / or, a third limiting portion (103) adapted to limit the air pump (3).

7. The sphygmomanometer according to claim 6, characterized in that, The first limiting portion (101) includes a limiting ring wall formed on the bottom wall of the housing. The limiting ring wall extends in a direction away from the bottom wall of the housing. A first avoidance notch (1011) is formed on one side of the limiting ring wall facing the air guiding structure (2). The first avoidance notch (1011) extends from the top end of the limiting ring wall towards the bottom wall of the housing. The second air vent (202) of the air guiding structure (2) passes through the first avoidance notch (1011) and is connected to the pressure relief valve, or the air inlet of the pressure relief valve passes through the first avoidance notch (1011) and is connected to the second air vent (202) of the air guiding structure (2).

8. The sphygmomanometer according to claim 6, characterized in that, The second limiting portion (102) includes a slot formed on the bottom wall of the housing. The slot extends in a direction away from the bottom wall of the housing. A second avoidance notch is formed on one side of the slot facing the air guiding structure (2). The second avoidance notch extends from the top end of the slot towards the bottom wall of the housing. The solenoid valve (5) includes a main body portion and a connecting portion connected to the main body portion. The connecting portion is limited in the slot, and the main body portion passes through the second avoidance notch. The first port (501) and the third port (503) are provided on the main body portion, and the second port (502) is provided on the connecting portion.

9. The sphygmomanometer according to claim 6, characterized in that, The third limiting portion (103) includes at least two groups of limiting pieces formed on the bottom wall of the housing. The limiting pieces are adapted to limit the air pump (3).

10. The sphygmomanometer according to any one of claims 1 to 5, characterized in that, Further included is a limiting bracket (6) detachably connected to the bottom wall of the housing. The limiting bracket (6) covers the air release valve, the air pump (3) and the solenoid valve (5), and is formed with a supporting structure adapted to abut against at least one of the air release valve, the air pump (3) and the solenoid valve (5).

11. The sphygmomanometer according to claim 10, wherein The supporting structure includes a first supporting convex portion (6011) adapted to abut against the air release valve. The cross-section of the first supporting convex portion (6011) is U-shaped.

12. The sphygmomanometer according to claim 10, characterized in that, The supporting structure includes a second supporting convex portion (6012) adapted to abut against the solenoid valve (5). The cross-section of the second supporting convex portion (6012) is U-shaped.

13. The sphygmomanometer according to claim 10, characterized in that, The supporting structure includes a plurality of third supporting convex portions (6013) spaced along the length direction of the air pump (3). An arc-shaped notch matching the outer circumference of the air pump (3) is formed on the third supporting convex portion (6013). The arc-shaped notch is adapted to abut against the air pump (3).

14. The sphygmomanometer according to claim 10, characterized in that, A first connection hole (104) and a second connection hole (602) through which a fastener can sequentially pass are respectively formed on the housing and the position-limiting bracket (6).

15. The sphygmomanometer according to any one of claims 1 to 5, characterized in that, The housing includes a bottom case (1) and an upper case that can be snapped together with each other, and the air guide structure (2), the air pump (3), the solenoid valve (5), and the air pipe (7) are limited in the bottom case (1).

16. The sphygmomanometer according to any one of claims 1 to 5, characterized in that, It further includes an air pipe (7), one end of which is connected to a third port (503) of the solenoid valve (5), and a pressure sensor is connected to the air pipe (7).

Images