Waistband type breast pump

Abstract

The utility model relates to the technical field of mother and baby products, in particular to a waistband type breast pump which comprises a milk collector, an air pump assembly and a waistband, the air pump assembly is installed on the waistband and communicated with the milk collector through an air pipe, and the milk collector comprises a milk collecting inner cavity. According to the breast pump, the waistband is combined with the breast pump, the air pump assembly is separated from the breast collector and is arranged on the waistband, so that the wearing load of the breasts of a user is reduced, convenience is achieved without using a hand supporting part, and the user can freely move during breast pumping; after the milk collector is separated from the air pump assembly, the milk collector can have more space to improve the milk storage capacity, the air pump assembly is installed on the waistband, larger space can be provided to increase the size of a battery or increase the power selection range of an air pump, the power limit value can be increased, or the power consumption time can be prolonged; a user can conveniently increase suction or use for a long time, and the milk collection requirement of the user is met.

Description

Technical Field

[0001] This utility model relates to the field of maternal and infant products technology, specifically a belt-type breast pump. Background Technology

[0002] A breast pump is a tool used to express breast milk that has accumulated in the breasts. It is generally suitable for when the baby cannot suckle directly, especially for mothers who want to breastfeed but still need to continue working. With the help of a breast pump, mothers can express breast milk at work and bring it home to feed their babies after get off work. This can relieve the discomfort of engorgement and increase milk production. Expressing milk in a timely manner is beneficial for the production of new milk.

[0003] Existing breast pumps are generally divided into integrated breast pumps, separate breast pumps, and wearable breast pumps. Whether it is an integrated breast pump or a separate breast pump, the user needs to hold the breast pump parts (usually the main unit or the milk storage container) when using it. The user cannot walk or move freely while using it. Wearable breast pumps do not require the user to hold them. They can be worn on the body along with clothing. Therefore, wearable breast pumps are widely loved.

[0004] However, existing wearable breast pumps are limited in size and weight to accommodate wearable devices, resulting in a decrease in overall power and capacity. Furthermore, because the main unit and milk storage container need to be integrated into the wearable breast pump, it still has a considerable size and weight. In addition, due to the limited milk storage capacity of wearable breast pumps, users may need to take out the total amount of milk expressed per week in multiple separate sessions, which is cumbersome and time-consuming due to the repeated disassembly and assembly. Therefore, it remains inconvenient for users.

[0005] To address the above shortcomings, we need to develop a belt-style breast pump to meet the needs of a wide range of users. Utility Model Content

[0006] In view of the aforementioned problems with existing breast pumps, such as limited freedom of movement, limited power and capacity, and heavy load, the technical solution adopted by this utility model to solve these problems is as follows:

[0007] A belt-type breast pump includes a milk collector for collecting milk, an air pump assembly for providing suction power, and a belt for wearing on a user's body. The air pump assembly is mounted on the belt and connected to the milk collector via an air tube. The milk collector includes a milk collection chamber for storing milk.

[0008] As described above, a belt-type breast pump includes an elastic suction member that facilitates skin adhesion. The hollow elastic suction member is connected to the milk collection cavity through the milk suction channel of the breast pump. The elastic suction member extends in a ring-shaped, open trumpet-shaped structure away from the milk suction channel. The elastic suction member also extends in a check valve structure towards the milk suction channel to prevent milk backflow. The minimum through-hole inner diameter of the check valve structure is smaller than the installation inner diameter of the milk suction channel.

[0009] As described above, in a belt-type breast pump, the air pump assembly includes an air pump component for suction, a solenoid valve for controlling the airflow, and a control unit for function control. The two milk collection devices are respectively connected to the air pump component, and the solenoid valve is installed on the airflow connection between the air pump component and the milk collection devices.

[0010] As described above, the control unit further includes a control handle, which is electrically connected to the control board of the control unit, and the control handle is provided with several function control buttons.

[0011] And / or, the control unit further includes a remote control handle, which can be wirelessly connected to the control unit, and the remote control handle is provided with several function control buttons.

[0012] As described above, in a belt-type breast pump, the control unit has a wireless connection module that can wirelessly connect to an external electronic device. The user can control the operation of the control unit through the external electronic device. The wireless connection module can be any one or more of an infrared transceiver, a Bluetooth transceiver, or a WiFi transceiver.

[0013] As described above, in a belt-type breast pump, the air pump and the solenoid valve are installed in the storage cavity of the belt. The air pump assembly is restricted to its installation position in the storage cavity by positioning cotton. The solenoid valve extends outward to the outside for connecting a quick-connect air nozzle to an air tube.

[0014] As described above, a belt-type breast pump has a detachably connected first connecting part and a second connecting part, wherein the first connecting part and / or the second connecting part are provided with an adhesive part for adhesive connection, a buckle part for fastening connection, or a magnetic suction part for magnetic connection.

[0015] As described above, a belt-type breast pump further includes a heat therapy module for heating and massage. The heat therapy module is mounted on the belt and electrically connected to the control unit of the air pump assembly. The heating surface of the heat therapy module faces the enclosure of the belt.

[0016] The hot compress module includes an electric heating pad for heating and an electrode pad for electrotherapy;

[0017] Alternatively, the heating module may include a thermoelectric heating pad that is conductive, heat-generating, and capable of electrotherapy, with the conductive surface of the thermoelectric heating pad facing the area enclosed by the waistband.

[0018] As described above, a belt-type breast pump further includes a phototherapy module for phototherapy, the phototherapy module being mounted on the belt and electrically connected to the control unit of the air pump assembly, the luminescent surface of the phototherapy module facing the enclosure of the belt.

[0019] As described above, in a belt-type breast pump, the phototherapy module includes a circuit board for emitting light and a light-transmitting shell for protecting the light beads. The circuit board has a plurality of light beads that can emit infrared light and / or blue light.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model combines a waist belt with a breast pump. By separating the air pump assembly from the breast pump and placing the air pump assembly on the waist belt, the weight of the air pump, which was originally on the breast pump, can be reduced and transferred to the waist belt, reducing the burden on the user's breasts. The user can carry the air pump assembly with the waist belt without using hand support, achieving the convenience of a wearable breast pump and allowing the user to move freely while pumping. After the air pump assembly is separated from the breast pump, the breast pump has more space to increase the milk storage capacity, which can meet the total weekly pumping volume of most users, greatly reducing the frequency of disassembly and assembly. The air pump assembly installed on the waist belt also allows for more space to increase the battery size or increase the range of air pump power options, which can improve the power limit or extend the power consumption time, allowing users to increase the suction power or use it for a longer period of time, thus meeting the user's milk collection needs.

[0022] 2. This utility model also adds a heat therapy module to the waist belt, which provides heating and electrotherapy massage to the user's waist or lower abdomen through heating pads, electrode pads or thermotherapy pads, relieving the user's fatigue and improving the user experience; this utility model also adds a phototherapy module to the waist belt, which irradiates infrared and blue light onto the user's skin through LED beads, improving the user's skin quality and achieving the effect of phototherapy.

[0023] 3. The air pump assembly of this utility model can adopt different control methods to facilitate user operation. It can be controlled by wired switch via control handle or wirelessly via remote control handle, so that users can control the operation of each functional module without removing clothing, thus improving user convenience. Attached Figure Description

[0024] Figure 1This is a front perspective view of a belt-type breast pump according to the present invention.

[0025] Figure 2 This is a front perspective view of a belt-type breast pump according to the present invention.

[0026] Figure 3 This is a top view of a belt-type breast pump according to the present invention.

[0027] Figure 4 for Figure 3 AA section view.

[0028] Figure 5 for Figure 4 C magnified view.

[0029] Figure 6 for Figure 3 BB section view. Detailed Implementation

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] Example 1:

[0034] like Figures 1 to 6The illustrated belt-type breast pump includes a breast pump 1, an air pump assembly 2, and a belt 3. The breast pump 1 is a device for collecting breast milk by adsorbing it onto the user's breast. The air pump assembly 2 is a pump body for connecting the breast pump 1 to perform negative pressure suction. The belt 3 is a restraint belt for fastening to the user's body. The belt 3 has a detachable first connecting part 32 and a second connecting part 33.

[0035] The waist belt 3 has an internal cavity 31 for installing the air pump assembly 2. The air pump assembly 2 includes an air pump component 21 for suction, a solenoid valve 22 for controlling the air passage, a battery 26 for providing suction power, and a control unit 23 for function control. The air pump assembly 2 is restricted to the installation position in the internal cavity 31 by positioning cotton 34. The positioning cotton 34 can be made of soft materials such as EVA or foam blocks and filled in the space between the air pump assembly 2 and the internal cavity 31. The solenoid valve 22 is installed on the air passage connection between the air pump component 21 and the milk collector 1. The control unit 23 has a function control button 234, i.e., a machine button, on the surface of the waist belt 3. The control button is connected to the control board 233 inside the waist belt 3. The control unit 23 is electrically connected to the air pump component 21 and the solenoid valve 22 to control the suction level of the air pump component 21 and the air passage opening and closing. The air pump assembly 2 uses a rechargeable independent battery 26, which allows the user to move freely while pumping milk.

[0036] The air pump component 21 of the air pump assembly 2 is connected to two milk collectors 1 via air pipes 24. Each milk collector 1 includes a mounting frame 15 and a mounting housing 16. After installation, the mounting frame 15 and the mounting housing 16 form a negative pressure inner cavity 12 and a milk collection inner cavity 13. The mounting frame 15 has a milk suction channel 14 for connecting the milk collection inner cavity 13. An elastic suction element 11 is detachably installed near the milk inlet 141 on the outer side of the milk suction channel 14. The elastic suction element 11 is preferably made of rubber or silicone as a soft material. A one-way valve 17 is installed near the milk storage port 142 of the milk collection inner cavity 13 in the milk suction channel 14. The one-way valve 17 is preferably a duckbill valve. An elastically deformable suction bowl 18 is installed near the negative pressure inner cavity 12 in the mounting frame 15. The air pump component 21 draws into the negative pressure inner cavity 12 to form a negative pressure state, which affects the deformation of the suction bowl 18, so that the milk suction channel 14, after being worn and sealed, has a negative pressure suction effect.

[0037] More specifically, the negative pressure inner cavity 12 of the breast pump 1 is located above the milk suction channel 14, and the milk collection inner cavity 13 of the breast pump 1 is located below the milk suction channel 14, so as to conform to the shape of the human breast and adapt to the structure worn in the bra.

[0038] More specifically, the elastic suction member 11 extends into a hollow horn-shaped structure 111 in a direction away from the milk suction channel 14, and the elastic suction member 11 extends into a check valve structure 112 in a direction closer to the milk suction channel 14. The minimum through-hole inner diameter of the check valve structure 112 is smaller than the installation inner diameter of the milk suction channel 14.

[0039] When using it, the air pump component 2 can be charged in advance to ensure continuous milk pumping for a certain period of time. First, open the waist belt 3 and wrap it around the user's body, preferably around the waist, so that the waist belt 3 is securely worn on the user's body, and the waist belt 3 is worn.

[0040] Before pumping, connect the breast pump 1 and the air pump assembly 2 with the air tube 24. This allows the air pump assembly 2 to draw air into the negative pressure chamber 12 of the breast pump 1 through the air pump component 21, creating a suction effect. Place the elastic suction component 11 of the breast pump 1 onto the user's breast, allowing the nipple to pass through the elastic suction component 11 and enter the milk suction channel 14. At this time, the milk suction channel 14 forms a sealed space. The breast pump 1 can then be used by wearing it on a bra. The user operates the function control button 234 of the control unit 23 to start the air pump assembly 2.

[0041] During breast pumping, the air pump 21 draws air from the negative pressure chamber 12 of the breast milk collector 1, creating a negative pressure state. This negative pressure causes the suction bowl 18 to deform, resulting in a negative pressure state in the sealed breast pumping channel 14 as well. This creates a suction effect on the user's breast skin, drawing out the milk. After the milk flows from the nipple into the breast pumping channel 14, it flows to the milk storage port 142 of the breast pumping channel 14 and passes through the one-way valve 17 into the breast milk collection chamber 13. The milk is stored in the breast milk collection chamber 13 until it is removed by the user. The check valve structure 112 of the elastic suction component 11 prevents the milk from flowing back into the breast pumping channel 14, ensuring that all the milk flows into the breast milk collection chamber 13. The one-way valve 17 prevents the milk inside the breast milk collection chamber 13 from returning to the breast pumping channel 14, thus ensuring the complete storage of the milk.

[0042] After pumping, the user can open the mounting frame 15 and mounting shell 16 to take out the milk stored in the milk collection chamber 13 for use or refrigeration. After use, the components can be disassembled and cleaned to keep the inside of the breast pump clean.

[0043] Optionally, in some embodiments, the material of the belt 3 may be one of the following soft materials: nylon, polyester, cotton, technical fabric, leather, rubber, plastic, etc., to meet the comfort level of the belt 3 when worn.

[0044] As another embodiment 101 of embodiment 1, such as Figure 2The belt-type breast pump shown in this embodiment includes a control handle 231 in the control unit 23. The control handle 231 is connected to the control unit 23 of the belt 3 via a wire to form a wired switch. The surface of the control handle 231 is provided with function control buttons 234 and an electronic display screen 235. When in use, the belt 3 can be stored inside clothing. The user can conveniently control the operation of the air pump assembly 2 through the control handle 231 to realize the wired control function. There is no need to untie clothing to touch the button every time, which is convenient for the user.

[0045] As another embodiment 102 of embodiment 1, such as Figure 1 The belt-type breast pump shown in this embodiment includes a control unit 23 further comprising a remote control handle 232. The remote control handle 232 is connected to the control unit 23 of the belt 3 via wireless connection technology such as infrared, Bluetooth or WIFI to form a remote control switch. The surface of the control handle 231 is provided with function control buttons 234 and an electronic display screen 235. When in use, the belt 3 can be stored inside clothing, and the user can conveniently control the operation of the air pump assembly 2 through the remote control handle 232 to realize the remote control function. There is no need to untie clothing to touch the buttons every time, which is convenient for the user.

[0046] As another embodiment 103 of embodiment 1, the control unit 23 of this embodiment has a wireless connection module that can wirelessly connect to external electronic devices. The wireless connection module can connect to the user's mobile phone or other electronic products through wireless connection technology. The user can remotely control the control unit 23 on the belt 3 through the software of the electronic product to realize the remote control function. The wireless connection module can be any one of an infrared transceiver device, a Bluetooth transceiver device, or a WiFi transceiver device, or any combination of multiple of them.

[0047] As another embodiment 104 of embodiment 1, the battery 26 of the air pump assembly 2 in this embodiment can be powered by a plug-in power supply. The plug-in structure allows the use of a more powerful air pump 21 and other functional modules in the breast pump to meet the needs of users who require more power.

[0048] As another embodiment 105 of embodiment 1, the battery 26 of the air pump assembly 2 in this embodiment can adopt a power supply method that can be both charged and plugged in. The plugged-in structure can use a more powerful air pump 21 and other functional modules in the breast pump to meet the needs of users who need more power. The rechargeable structure can facilitate the user's free movement when pumping milk.

[0049] As another embodiment 106 of embodiment 1, the battery 26 of the air pump assembly 2 in this embodiment can be charged by magnetic attraction, which makes it convenient for users to charge it at any time and use it at any time, thus improving the flexibility of breast pump use.

[0050] As another embodiment 107 of embodiment 1, such as Figures 3 to 5 The belt-type breast pump shown in this embodiment has a solenoid valve 22 installed in the storage cavity 31 of the belt 3 to reduce the space occupied by the outside. The solenoid valve 22 extends outward to the outside and has a quick-connect nozzle 25 for connecting the air tube 24, so that the user can insert the air tube 24 to connect or pull out the air tube 24 to disconnect at any time.

[0051] As another embodiment 108 of embodiment 1, such as Figures 1 to 3 The belt-type breast pump shown has a first connecting part 32 and / or a second connecting part 33 provided with an adhesive part (preferably Velcro) for adhesive connection, a buckle part (preferably elastic buckle) for fastening connection, or a magnetic part (preferably magnetic metal) for magnetic connection. The first connecting part 32 and the second connecting part 33 can be connected in one of the following ways to make the belt 3 securely fit around the user's waist, improve the convenience of wearing the belt 3 and make it convenient for the user to use.

[0052] Example 2:

[0053] Based on Example 1, such as Figures 2 to 5 The illustrated belt-type breast pump, in this embodiment, also includes a heating module 4 for warmth and massage installed in the belt 3. The heating surface of the heating module 4 faces the area enclosed by the belt 3. The heating module 4 includes an electric heating element 41 for warmth and an electrode 42 for electrotherapy. The heating module 4 is electrically connected to a control unit 23. When energized, the electric heating element 41 provides warmth through resistance heating, and when energized, the electrode 42 provides electrotherapy through microcurrent contact with the skin. This not only facilitates breast pumping but also provides heat therapy and electrotherapy to the user's uterus, abdomen, and waist, making it convenient for the user. The belt 3 is typically worn around the user's waist during use, and the area enclosed by the belt 3 is the range within which the belt 3 surrounds the user's body when fastened.

[0054] As another embodiment 201 of embodiment 2, such as Figure 5 The belt-type breast pump shown can have a number of heating pads 41 and / or a number of electrode pads 42. A number of heating pads 41 can increase the heating range and heat output, thereby improving the heat therapy effect. A number of electrode pads 42 can increase the electrotherapy range and intensity, thereby improving the electrotherapy effect.

[0055] As another embodiment 202 of embodiment 2, such as Figure 2The belt-type breast pump shown has an electric heating element 41 and an electrode 42 that can be integrated to form a thermotherapy pad 43 that can conduct electricity, generate heat, and provide electrotherapy. The conductive surface of the thermotherapy pad 43, which has good conductivity, faces the enclosure of the belt 3 so as to contact the human skin for electrotherapy. While performing electrotherapy, it can also generate heat and conduct heat to the human skin to provide warmth, so that a heat therapy effect can be achieved while performing electrotherapy, thereby improving the user experience and reducing the space occupied by the heat therapy module 4 on the belt 3.

[0056] As another embodiment 203 of embodiment 202, a plurality of thermoelectric therapy pads 43 can be arranged along the length of the waist belt 3 on the inner side of the waist belt 3 facing the enclosed area, so that the thermoelectric therapy pads 43 can be dispersed around the user's waist, increasing the area of ​​heat application and electrotherapy, and improving the effect of heat application and electrotherapy.

[0057] Example 3:

[0058] Based on Example 1, such as Figures 2 to 5 The illustrated belt-type breast pump, in this embodiment, also incorporates a phototherapy module 5 for phototherapy within the belt 3. The luminescent surface of the phototherapy module 5 faces the area enclosed by the belt 3. The phototherapy module 5 includes a circuit board 51 for emitting light and a translucent outer shell 52 for protecting the light beads. Several light beads on the circuit board 51 can emit various colors of light, such as infrared and blue light, which are then irradiated onto the skin through the translucent outer shell 52 to achieve a phototherapy effect. The belt 3 is typically worn around the user's waist during use, and the area enclosed by the belt 3 is the range within which the belt 3 surrounds the user's body when fastened.

[0059] Example 4:

[0060] Based on Examples 1-3, such as Figures 2 to 5 The belt-type breast pump shown in this embodiment has a heating module 4 and a phototherapy module 5 installed on the belt 3. The heating module 4 and the phototherapy module 5 are both integrated into the opening of the storage cavity 31 facing the area enclosed by the belt 3. The integration into the storage cavity 31 can further reduce the space occupied by the external space.

[0061] Example 5:

[0062] Based on Examples 1-3, such as Figures 1 to 6 The belt-type breast pump shown in this embodiment has a set of air pump assembly 2, two breast pumps 1, a hot compress module 4, and a phototherapy module 5 installed on the belt 3. The first connecting part 32 and the second connecting part 33 of the belt 3 are connected by Velcro.

[0063] When using, the air pump assembly 2 can be charged in advance to ensure continuous milk pumping for a certain period of time. First, open the waist belt 3 and wrap it around the user's body, preferably around the waist. After the waist belt 3 fits the user's body, connect the first connecting part 32 and the second connecting part 33 to make the waist belt 3 securely worn on the user's body, thus completing the wearing of the waist belt 3.

[0064] Before pumping, connect the breast pump 1 and the air pump assembly 2 with the air tube 24. This allows the air pump assembly 2 to draw air into the negative pressure chamber 12 of the breast pump 1 through the air pump component 21, creating a suction effect. Place the elastic suction component 11 of the breast pump 1 onto the user's breast, allowing the nipple to pass through the elastic suction component 11 and enter the milk suction channel 14. At this time, the milk suction channel 14 forms a sealed space. The breast pump 1 can then be used by wearing it on a bra. The user operates the function control button 234 of the control unit 23 to start the air pump assembly 2.

[0065] During breast pumping, the air pump 21 draws air from the negative pressure chamber 12 of the breast pump 1, creating a negative pressure state. This negative pressure causes the suction bowl 18 to deform, resulting in a negative pressure state in the sealed breast pumping channel 14 as well. This creates a suction effect on the user's breast. After the milk flows from the nipple into the breast pumping channel 14, it flows to the milk storage port 142 of the breast pumping channel 14 and passes through the one-way valve 17 into the breast collection chamber 13. The milk is stored in the breast collection chamber 13 until it is removed by the user. The check valve structure 112 of the elastic suction component 11 prevents the milk from flowing back into the breast pumping channel 14, ensuring that all the milk flows into the breast collection chamber 13. The one-way valve 17 prevents the milk inside the breast collection chamber 13 from returning to the breast pumping channel 14, thus ensuring the complete storage of the milk.

[0066] During breast pumping, the heating module 4 and phototherapy module 5 can be activated simultaneously. The heating element 41 provides warmth through resistance heating when energized, while the electrode pads 42 provide electrical massage through microcurrent contact with the skin, achieving both heating and electrotherapy effects. The LED circuit board 51, with its numerous LEDs, emits various colors of light, such as infrared and blue light, which, after passing through the translucent casing 52, illuminate the skin, achieving phototherapy effects.

[0067] After pumping, the user can open the mounting frame 15 and mounting shell 16 to take out the milk stored in the milk collection chamber 13 for use or refrigeration. After use, the components can be disassembled and cleaned to keep the inside of the breast pump clean.

[0068] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A belt-type breast pump, characterized in that: It includes a milk collector (1) for collecting milk, an air pump assembly (2) for providing suction power, and a belt (3) for wearing on the user's body. The air pump assembly (2) is mounted on the belt (3) and connected to the milk collector (1) through an air tube (24). The milk collector (1) includes a milk collection cavity (13) for storing milk. The air pump assembly (2) includes an air pump component (21) for suction, a solenoid valve (22) for controlling the opening and closing of the air passage, and a control unit (23) for function control. The two milk collectors (1) are respectively connected to the air pump component (21), and the solenoid valve (22) is installed on the air passage connection between the air pump component (21) and the milk collectors (1). The air pump (21) and the solenoid valve (22) are installed in the storage cavity (31) of the belt (3). The control unit (23) is electrically connected to the air pump (21) and the solenoid valve (22).

2. The belt-type breast pump according to claim 1, characterized in that: The milk collector (1) includes an elastic suction member (11) that facilitates skin adhesion. The hollow elastic suction member (11) is connected to the milk collection cavity (13) through the milk suction channel (14) of the milk collector (1). The elastic suction member (11) extends into a ring-shaped horn-shaped shield structure (111) in a direction away from the milk suction channel (14). The elastic suction member (11) extends into a check shield structure (112) in a direction close to the milk suction channel (14) to prevent milk backflow. The minimum through-hole inner diameter of the check shield structure (112) is smaller than the installation inner diameter of the milk suction channel (14).

3. A belt-type breast pump according to claim 1, characterized in that: The control unit (23) also includes a control handle (231), which is electrically connected to the control board (233) of the control unit (23). The control handle (231) is provided with several function control buttons (234). And / or, the control unit (23) further includes a remote control handle (232), which can be wirelessly connected to the control unit (23), and the remote control handle (232) is provided with a number of function control buttons (234).

4. A belt-type breast pump according to claim 1, characterized in that: The control unit (23) has a wireless connection module that can wirelessly connect to external electronic devices. Users can control the operation of the control unit (23) through external electronic devices. The wireless connection module can be any one or more of an infrared transceiver, a Bluetooth transceiver, or a WiFi transceiver.

5. A belt-type breast pump according to claim 1, characterized in that: The air pump assembly (2) is restricted to the installation position in the receiving cavity (31) by the positioning cotton (34), and the solenoid valve (22) extends outward to the outside for connecting the quick-connect air nozzle (25) to the air pipe (24).

6. A belt-type breast pump according to claim 1, characterized in that: The belt (3) has a detachable first connecting part (32) and a second connecting part (33), wherein the first connecting part (32) and / or the second connecting part (33) are provided with an adhesive part for adhesive connection, a buckle part for fastening connection, or a magnetic part for magnetic connection.

7. A belt-type breast pump according to any one of claims 1-6, characterized in that: It also includes a heat therapy module (4) for heating and massage, which is mounted on the waist belt (3) and electrically connected to the control unit (23) of the air pump assembly (2), with the heating surface of the heat therapy module (4) facing the enclosure of the waist belt (3); The hot compress module (4) includes an electric heating pad (41) for heating and an electrode pad (42) for electrotherapy. Alternatively, the heat therapy module (4) may include a thermoelectric patch (43) that is conductive, heat-generating, and electrotherapy-enabled, with the conductive surface of the thermoelectric patch (43) facing the enclosure of the waistband (3).

8. A belt-type breast pump according to any one of claims 1-6, characterized in that: It also includes a phototherapy module (5) for phototherapy, which is mounted on the waist belt (3) and electrically connected to the control unit (23) of the air pump assembly (2), with the light-emitting surface of the phototherapy module (5) facing the enclosure of the waist belt (3).

9. A belt-type breast pump according to claim 8, characterized in that: The phototherapy module (5) includes a light-emitting circuit board (51) for emitting light and a light-transmitting outer shell (52) for protecting the light beads. The light-emitting circuit board (51) has a plurality of light beads, which can emit infrared light and / or blue light.

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