Breast sucking device

Abstract

The invention relates to the technical field of mother and baby products, in particular to a breast pumping device which comprises a flange assembly and a main machine, and a breast pumping channel used for containing breasts is formed in the flange assembly; the main machine comprises a pump assembly. The flange assembly can be driven by the pump assembly to deform so as to change the shape and / or size of the breast pumping channel. Compared with the prior art, the pump assembly is used for controlling deformation of the flange assembly, so that the shape and / or the size of the breast pumping channel are / is controlled, and the breast pumping device can adapt to breasts of different sizes and shapes.

Description

Technical Field

[0001] The present application relates to the technical field of maternal and infant products, and in particular to a breast pumping device. Background Art

[0002] With the advancement of small household appliance technology, the emergence of breast pumps can effectively extract and store breast milk, which can be readily available when the baby needs it, greatly liberating the lives of breastfeeding women.

[0003] The breast pump needs to fit tightly with the user's breast to effectively apply negative pressure to the user's breast for milk extraction. Otherwise, problems such as air leakage, milk leakage, and milk accumulation may occur. Therefore, in order to adapt to breasts of different sizes, the common breast pumps are usually equipped with several flange components of different specifications. Users can replace the flange components to make the breasts fit tightly with the breast pump. However, even for the same user, the size and shape of the breasts at different times are not exactly the same. When using a breast pump, the user must select and disassemble the flange components according to the actual situation. Summary of the invention

[0004] The present application mainly provides a breast pumping device, which can improve the versatility of the breast pumping device.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a breast pumping device, comprising a flange assembly and a main unit. The flange assembly is formed with a breast pumping channel for accommodating a breast; the main unit comprises a pump assembly; the flange assembly can be deformed under the drive of the pump assembly to change the shape and / or size of the breast pumping channel.

[0006] In a specific embodiment, the flange assembly comprises an expansion member, and the expansion member is configured to be able to expand toward the milk extraction channel when the pump assembly is in operation.

[0007] In a specific embodiment, the expansion member includes an air bag, the pump assembly includes a pump body, and a first air path and a second air path are formed in the breast pumping device, one end of the first air path is connected to the atmosphere and the other end is connected to the air intake port of the pump body, and one end of the second air path is connected to the air outlet of the pump body and the other end is connected to the air bag.

[0008] In a specific embodiment, the breast pumping device further includes a pressure sensor and a control module. The pressure sensor is used to obtain the pressure of the air bag. The pressure sensor is arranged in the second air circuit, or the second air circuit is connected to a second branch, and the pressure sensor is arranged in the second branch; the pressure sensor is connected to the control module, and the control module is connected to the pump assembly.

[0009] In a specific embodiment, the pump assembly further comprises a negative pressure chamber connected to the first air circuit, the negative pressure chamber is connected to the air suction port of the pump body, and the negative pressure chamber is used to apply negative pressure to the milk suction channel.

[0010] In a specific embodiment, the pump assembly further includes a first valve body, and the first valve body is used to control the connection and disconnection of the air path between the negative pressure chamber, the air outlet of the pump body and the atmosphere.

[0011] In a specific embodiment, the pump assembly further includes a second valve body, and the second valve body is used to control the on-off of the air path among the airbag, the pump body and the atmosphere.

[0012] In a specific embodiment, the breast pumping device is further provided with a third air circuit, one end of the third air circuit is connected to the second air circuit, and the other end is connected to the atmosphere, and the second valve body includes a first sub-valve body arranged in the second air circuit for controlling the open and close of the air circuit between the air bag and the pump body, and a second sub-valve body arranged in the third air circuit for controlling the open and close of the air circuit on the third air circuit.

[0013] In a specific embodiment, the milk suction channel includes a nipple channel and a breast cavity, the flange assembly also includes a flange body, the expansion member is at least arranged on the inner wall of the flange body facing the nipple channel, and the radial dimension of the nipple channel decreases as the volume of the expansion member increases.

[0014] In a specific embodiment, the flange assembly also includes a flange soft body, the expansion piece is arranged between the flange main body and the flange soft body, and the flange soft body is detachably connected to the flange main body; wherein, the flange soft body is elastic, the flange soft body includes a first limiting portion, and the flange main body includes a second limiting portion, and the first limiting portion and the second limiting portion are used to detachably connect the flange soft body on the peripheral side of the expansion piece to the flange main body.

[0015] The beneficial effect of the present application is that, different from the prior art, the embodiment of the present application, by arranging a pump assembly connected to the flange assembly in the main unit, can deform the flange assembly by pumping fluid, thereby changing the shape and / or size of the milk suction channel, so that the milk suction channel can fit breasts of different sizes, shapes and sizes, and the breast pumping device can adapt to different breasts without replacing the flange assembly, thereby achieving the effect of improving the versatility of the breast pumping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic structural diagram of the breast pumping device of the present application at one angle;

[0018] Figure 2 It is a schematic structural diagram of the breast pumping device of the present application from another angle;

[0019] Figure 3 is a schematic diagram of the air path structure in the breast pumping device of the present application;

[0020] Figure 4 It is a first cross-sectional structural schematic diagram of the breast pump device of the present application;

[0021] Figure 5 is a schematic cross-sectional view of the expansion member of the breast pumping device of the present application when expanded;

[0022] Figure 6 is a third cross-sectional structural schematic diagram of the breast pump device of the present application;

[0023] Figure 7 It is a schematic cross-sectional view of the structure of the breast pumping device of the present application when the expansion member is contracted.

[0024] 1. Breast pump; 2. Flange assembly; 21. Breast pump channel; 211. Nipple channel; 212. Breast cavity; 22. Expansion member; 221. Air bag; 222. Air chamber; 23. Flange body; 231. Second limiting part; 232. Limiting flange; 24. Flange software; 241. First limiting part; 3. Host; 31. Docking slot; 32. Pump assembly; 321. Pump body; 322. Negative pressure cavity; 3 22a, elastic membrane; 323, first valve body; 324, second sub-valve body; 325, first sub-valve body; 325a, first end; 325b, second end; 325c, third end; 33, battery; 34, control module; 41, first air path; 42, first branch; 43, second air path; 44, second branch; 45, third air path; 5, pressure sensor; 6, annular bottom cover; 61, limiting groove. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is particularly noted that the following implementation methods are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following implementation methods are only some implementation methods of the present application rather than all implementation methods. All other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] The terms "first", "second" and "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, and the manner is such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications in the implementation mode of this application (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. The manner, such as a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0027] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] With the advancement of small household appliance technology, the emergence of breast pumps can effectively extract and store breast milk, which can be readily available when the baby needs it, greatly liberating the lives of breastfeeding women.

[0029] The breast pump needs to fit tightly with the user's breast to effectively apply negative pressure to the user's breast for milk extraction. Otherwise, problems such as air leakage, milk leakage, and milk accumulation may occur. Therefore, in order to adapt to breasts of different sizes, the common breast pumps are usually equipped with several flange components of different specifications. Users can replace the flange components to make the breast fit tightly with the breast pump.

[0030] However, even for the same user, the size and shape of the breasts at different times are not exactly the same. When using a breast pump, the user must select and disassemble the flange assembly that meets the needs according to the actual situation. In most cases, this process requires the user to constantly disassemble and assemble the flange assembly and try and compare before finally determining the appropriate flange assembly. This leads to too many disassembly and assembly of the flange assembly, which can easily lead to various problems such as equipment damage, loose fixation, air leakage, milk leakage, etc., which have an adverse effect on the service life and stability of the breast pump and flange assembly. In addition, multiple flange assemblies are also prone to loss and damage when they are delivered to users for storage.

[0031] In order to improve or solve the above technical problems, the inventors of the present application have proposed at least the following embodiments after long-term research.

[0032] See also Figures 1 to 7 , Figure 1 It is a schematic structural diagram of the breast pumping device of the present application at one angle. Figure 2 It is a schematic structural diagram of the breast pumping device of the present application from another angle. Figure 3 It is a schematic diagram of the air path structure in the breast pumping device of the present application. Figure 4 This is a first cross-sectional structural schematic diagram of the breast pumping device of the present application. Figure 5 It is a schematic cross-sectional view of the expansion member of the breast pumping device of the present application when expanded. Figure 6 This is a third cross-sectional structural schematic diagram of the breast pump device of the present application. Figure 7 It is a cross-sectional structural diagram of the breast pumping device of the present application when the expansion member is contracted. In order to solve the above technical problems, the present application provides a breast pumping device 1 for docking with a user's breast to perform a breast pumping operation.

[0033] The breast pump device 1 may include a flange assembly 2 and a main unit 3. A breast pump passage 21 for accommodating a breast is formed in the flange assembly 2, and the main unit 3 includes a pump assembly 32. The flange assembly 2 can be deformed under the drive of the pump assembly 32, thereby changing the shape and / or size of the breast pump passage 21.

[0034] Optionally, the flange assembly 2 may be connected to a pump assembly 32 , and the pump assembly 32 may provide the flange assembly 2 with power required for deformation.

[0035] In the structure provided in this embodiment, by providing a pump assembly 32 connected to the flange assembly 2 in the main unit 3, the flange assembly 2 can be deformed by pumping fluid, thereby changing the shape and / or size of the milk suction channel 21, so that the milk suction channel 21 can fit breasts of different sizes, shapes, and sizes, thereby enabling the breast pumping device 1 to adapt to different breasts without replacing the flange assembly 2, thereby achieving the effect of improving the versatility of the breast pumping device 1. At the same time, since a large number of different types of flange assemblies 2 are not required, the design, mold opening and other costs of the manufacturer when producing the breast pumping device 1 are also reduced, and there is no problem of a large number of flange assemblies 2 being easily lost when they are delivered to the user.

[0036] In a specific embodiment of the present application, the flange assembly 2 may include an expansion member 22. The volume of the expansion member 22 is configured to be able to expand into the milk suction channel 21 when the pump assembly 32 is working.

[0037] Specifically, the expansion member 22 may be connected to the pump assembly 32 , and the pump assembly 32 may be used to provide power for the expansion of the expansion member 22 .

[0038] Through the structure provided in this embodiment, the pump assembly 32 can be used to control the expansion piece 22 to expand into the milk suction channel 21, thereby changing the shape and radial dimension of the milk suction channel 21, so that the milk suction channel 21 can fit breasts of different sizes, shapes and sizes. Therefore, without replacing the flange assembly 2, the breast pump device 1 can adapt to different breasts, which can achieve the effect of improving the versatility of the breast pump device 1.

[0039] In a specific embodiment of the present application, the expansion member 22 may include an air bag 221, the pump assembly 32 may include a pump body 321, and a first air path 41 and a second air path 43 are formed in the breast pumping device 1. One end of the first air path 41 is connected to the atmosphere, and the other end is connected to the air inlet of the pump body 321. One end of the second air path 43 is connected to the air outlet of the pump body 321, and the other end is connected to the air bag 221.

[0040] In the structure provided in this embodiment, the first air path 41 is used to transport air to the pump body 321, and the pump body 321 transports the air to the airbag 221 through the second air path 43, so that the airbag 221 can be inflated, and the volume of the airbag 221 becomes larger under the action of the inflation operation, so as to achieve the effect of expanding the expansion member 22 into the milk suction channel 21, thereby changing the shape and radial size of the milk suction channel 21.

[0041] Optionally, the breast pumping device 1 may be provided with an air chamber 222 connected to the air bag 221. When the pump body 321 inflates the air bag 221, gas enters the air chamber 222 to increase the volume of the air bag 221, thereby achieving the effect of causing the expansion member 22 to expand into the milk suction channel 21, thereby changing the shape and radial size of the milk suction channel 21.

[0042] Optionally, the shape of the airbag 221 can be spherical, annular or other shapes, so as to better fit the user's breast while reducing discomfort to the user and improving the usability of the breast pumping device 1.

[0043] Optionally, the number of airbags 221 can be multiple, and the multiple airbags 221 are arranged in multiple layers from the outside to the inside along the milk suction channel 21. The pump assembly 32 can inflate different airbags 221 to different degrees according to needs, so as to adjust the position and strength of squeezing the user's breasts, and further improve the adaptation effect for different breasts. In addition, by controlling the inflation and deflation of airbags 221 at different positions, the user's breasts can be pressed and massaged, which can promote lactation and improve the working efficiency of the breast suction device 1.

[0044] In a specific embodiment of the present application, the breast pump device 1 may further include a pressure sensor 5 and a control module 34. The pressure sensor 5 is used to obtain the pressure of the air bag. The pressure sensor 5 may be specifically arranged in the second air path 43. The pressure sensor 5 is connected to the control module 34, and the control module 34 is connected to the pump assembly 32.

[0045] Optionally, the second air path 43 may be connected to a second branch 44, and the pressure sensor 5 may be disposed in the second branch 44. Specifically, the pressure sensor 5 may be disposed in the air chamber 222 of the airbag 221, so as to measure the air pressure inside the airbag 221.

[0046] Optionally, the breast pump device 1 may further include a battery 33, which is connected to the control module 34 and the pump assembly 32 and is used to supply power to the control module 34 and the pump assembly 32 so that the breast pump device 1 can work normally.

[0047] Through the structure provided in this embodiment, the second branch 44 where the pressure sensor 5 is located is connected to the airbag 221. The control module 34 can use the pressure sensor 5 to obtain the air pressure of the airbag 221, and then calculate the expansion degree of the airbag 221. The control module 34 can control the operation of the pump assembly 32 according to the air pressure, and use the air pressure feedback mechanism to effectively control the working condition of the pump assembly 32, so that the airbag 221 can expand to a suitable shape and size according to the needs of the user, which can improve the usability of the breast pumping device 1.

[0048] Optionally, the pressure sensor 5 can also be arranged on the side surface of the expansion member 22 such as the airbag 221 facing the milk suction channel 21, so as to measure the pressure applied by the expansion member 22 to the user's breast through the inner wall of the milk suction channel 21, which can intuitively reflect the position and force of squeezing the user's breast.

[0049] Optionally, the control module 34 may specifically include a mainboard and control buttons. The control buttons may be arranged on a surface of the breast pumping device 1 facing away from the breast pumping channel 21, so that the user can control the operation of the pump assembly 32 by pressing, turning, touching, etc.

[0050] Furthermore, the control module 34 may also include a voice recognition component and a voice recording component. The user does not need to manually control, but can directly input voice to the breast pump 1. The voice recognition component recognizes the voice received by the voice recording component, thereby controlling the pump component 32 according to the voice content.

[0051] Optionally, the control module 34 may further include a communication component, which can be connected to the server or client using wired and / or wireless communication means. The user can input instructions through the client and send them to the communication component, or the server can send instructions to the communication component, so that the control module 34 can control the pump assembly 32 according to the instructions.

[0052] In a specific embodiment of the present application, the pump assembly 32 may further include a negative pressure chamber 322 connected to the first air circuit 41, the negative pressure chamber 322 is connected to the air inlet of the pump body 321, and the negative pressure chamber 322 is used to apply negative pressure to the milk suction channel 21. The pump body 321 may also suck fluid from the negative pressure chamber 322, thereby reducing the volume of the fluid in the negative pressure chamber 322, and applying negative pressure to the milk suction channel 21 by using the negative pressure chamber 322, thereby achieving the effect of promoting the breast of the user in the milk suction channel 21 to secrete milk.

[0053] Specifically, the negative pressure chamber 322 can be isolated from the milk suction channel 21 by the elastic membrane 322a. When the volume of the fluid in the negative pressure chamber 322 is reduced, the air pressure in the milk suction channel 21 is greater than the air pressure in the negative pressure chamber 322. At this time, under the action of the negative pressure, the elastic membrane 322a collapses to one side of the negative pressure chamber 322, causing the volume of the milk suction channel 21 to increase, so that the air pressure in the milk suction channel 21 also decreases until it is the same as the air pressure in the negative pressure chamber 322. At this time, the air pressure in the milk suction channel 21 is lower than the outside, which can promote the effect of lactation of the user's breasts and realize the milk suction process.

[0054] Furthermore, the fluid sucked by the pump body 321 from the negative pressure chamber 322 can be directly discharged through the air outlet of the pump body 321, or can be input into the expansion member 22 to cause the expansion member 22 to expand.

[0055] In a specific embodiment of the present application, the pump assembly 32 may further include a first valve body 323, which is used to control the connection and disconnection of the air path between the negative pressure chamber 322, the air outlet of the pump body 321 and the atmosphere.

[0056] Specifically, the first valve body 323 may be disposed in the first gas circuit 41, and the volume of the negative pressure chamber 322 may be variable. The first gas circuit 41 may be connected to a first branch 42, which is disposed between the first valve body 323 and the pump body 321, and the negative pressure chamber 322 is connected to the pump body 321 through the first branch 42. When the first valve body 323 is closed and the pump body 321 is working, the volume of the negative pressure chamber 322 is reduced and the volume of the milk suction channel 21 is increased.

[0057] Through the structure provided in this embodiment, in addition to sucking air from the outside through the first valve body 323 to fill the expansion piece 22, after closing the first valve body 323, the gas in the negative pressure chamber 322 can be input into the pump body 321 through the first branch 42, and then this part of the gas is pumped to the expansion piece 22, thereby reducing the volume of the fluid in the negative pressure chamber 322, and using the negative pressure chamber 322 to apply negative pressure to the milk suction channel 21, while causing the expansion piece 22 to expand and change the shape of the milk suction channel 21, thereby improving the adaptation effect and further promoting the effect of breast lactation of the user in the milk suction channel 21.

[0058] In a specific embodiment of the present application, the pump assembly 32 may further include a second valve body, and the second valve body is used to control the on-off of the air path between the airbag, the pump body and the atmosphere.

[0059] In a specific embodiment of the present application, the second valve body may include a second sub-valve body 324 and a first sub-valve body 325, and the breast pumping device 1 is further provided with a third air circuit 45. One end of the third air circuit 45 is connected to the atmosphere, and the other end is connected to the air outlet of the pump body 321. The second sub-valve body 324 is provided in the third air circuit 45, and the first sub-valve body 325 is provided in the second air circuit 43.

[0060] In the structure provided in this embodiment, when the second sub-valve body 324 is opened, the gas from the negative pressure chamber 322 can also be directly discharged through the third air path 45 after passing through the pump body 321, without entering the air bag 221. When the second sub-valve body 324 is closed and the first sub-valve body 325 is opened, the gas from the negative pressure chamber 322 can be used to expand the air bag 221, and while applying negative pressure to the milk suction channel 21 by using the negative pressure chamber 322, the expansion member 22 is expanded to change the shape of the milk suction channel 21, thereby improving the fitting effect and further promoting the effect of lactation of the user's breast in the milk suction channel 21.

[0061] Optionally, when a large pressure difference between the negative pressure chamber 322 and the outside is required, a large amount of gas will be extracted from the negative pressure chamber 322. However, since the expansion space of the airbag 221 is limited, an airbag 221 with too large a volume will also affect the adaptation effect of the breast pumping device 1 and bring a bad user experience. Therefore, by opening the second sub-valve body 324, a large amount of gas can be directly discharged to the outside through the third gas path 45 and the second sub-valve body 324, without causing adverse effects on the shape of the breast pumping channel 21.

[0062] Specifically, the first sub-valve body 325 may include a first end 325a, a second end 325b and a third end 325c, the first end 325a is connected to the atmosphere, the second end 325b is connected to the air outlet of the pump body 321, the third end 325c is connected to the airbag 221, and the second end 325b to the third end 325c are unidirectionally connected.

[0063] Therefore, the gas from the negative pressure chamber 322 or the outside can only enter the airbag 221 or the second branch 44 through the second end 325b of the first sub-valve body 325. However, after the gas in the airbag 221 and the second branch 44 enters through the third end 325c of the first sub-valve body 325, it cannot be output from the second end 325b to the outlet of the pump body 321, but can only be discharged to the outside from the first end 325a of the first sub-valve body 325.

[0064] Through the structure provided in this embodiment, by controlling the first sub-valve body 325, the inflation and deflation process of the air bag 221 can be effectively controlled, so that the shape and size of the milk suction channel 21 can be adjusted according to needs, thereby improving the usability of the suction device.

[0065] like Figure 3 As shown, when the user uses the breast pump 1, the first valve body 323, the second sub-valve body 324, the first sub-valve body 325, the pressure sensor 5 and the pump body 321 are all connected to the control module 34, so as to work under the control of the control module 34. The working process can be as follows:

[0066] (1) The user connects the milk suction channel 21 of the breast pump 1 to the breast, and then the first valve body 323 and the first sub-valve body 325 are opened, and the second sub-valve body 324 is kept closed.

[0067] (2) The control module 34 controls the pump body 321 to inhale gas from the outside through the first gas path 41, and inputs the gas into the air bag 221 from the second end 325b of the first sub-valve body 325 through the second gas path 43, so as to adjust the shape and size of the milk suction channel 21. During the adjustment process, if too much gas is filled into the air bag 221, for example, the pressure sensor 5 in the second branch 44 detects that the pressure is too high, the first sub-valve body 325 can be controlled to open, so that part of the gas in the air bag 221 is discharged to the outside through the first end 325a of the first sub-valve body 325.

[0068] (3) After the adaptation process of the milk suction channel 21 is completed, the first valve body 323 and the first sub-valve body 325 are closed, and the second sub-valve body 324 is opened. Then, the control module 34 controls the pump body 321 to suck the gas in the negative pressure chamber 322 through the first branch 42, and discharges this part of the gas to the outside through the third gas path, so as to achieve the effect of applying negative pressure to the milk suction channel 21, so that the milk suction process can begin.

[0069] (4) After the milk extraction process is completed, the first valve body 323 opens, and the external gas naturally enters the first branch 42 through the first gas path 41, so that the negative pressure chamber 322 returns to normal pressure, and then the milk extraction channel 21 returns to normal pressure. At the same time, the first sub-valve body 325 opens, so that the gas in the air bag 221 can be discharged to the outside through the first end 325a, so that the size and contour shape of the milk extraction channel 21 return to the initial state.

[0070] (5) The user withdraws the breast from the milk extraction channel 21, and the entire milk extraction process is completed.

[0071] The first valve body 323 may be a normally open solenoid valve, and the second sub-valve body 324 may be a normally closed solenoid valve.

[0072] In a specific embodiment of the present application, the milk suction channel 21 may specifically include a nipple channel 211 and a breast cavity 212. The flange assembly 2 also includes a flange body 23. The expansion piece 22 is at least arranged on the inner wall of the flange body 23 facing the nipple channel 211. The radial dimension of the nipple channel 211 can be reduced as the volume of the expansion piece 22 increases.

[0073] The flange body 23 may be made of hard materials, such as hard plastics, alloys, etc., to improve the structural stability of the flange body 23 and reduce the probability of deformation.

[0074] Optionally, when there is no gas filling in the airbag 221, the airbag 221 is in a natural compression state, at which time, the diameter of the nipple channel 211 may be 24-30 mm. When the airbag 221 is inflated to the maximum limit, the diameter of the nipple channel 211 may be 11-15 mm.

[0075] For users, the differences between breasts will be clearly reflected in the nipple area, and the nipple area is also a key lactation area. Therefore, the expansion piece 22 can be at least arranged on the inner wall of the flange body 23 facing the nipple channel 211. Since the flange body 23 is made of hard material, when the volume of the expansion piece 22 changes, under the pressure of the flange body 23, the expansion piece 22 expands into the milk suction channel 21, so that the shape and size of the nipple channel 211 can be changed according to needs, and the nipple can be stably limited, which is beneficial to improve the adaptation effect of the breast suction device 1.

[0076] Furthermore, based on the scheme of multiple air bags 221, the pump assembly 32 can inflate different air bags 221 to different degrees as needed, thereby adjusting the position and strength of squeezing the user's nipples, imitating the sucking movements of infants and young children in nature, and pressing and massaging the user's breasts, which can promote lactation and improve the working efficiency of the breast pumping device 1.

[0077] In a specific embodiment of the present application, the flange assembly 2 may further include a flange soft body 24 , the expansion member 22 is disposed between the flange main body 23 and the flange soft body 24 , and the flange soft body 24 can be detachably connected to the flange main body 23 .

[0078] The flange soft body 24 may be elastic and may specifically include a first limiting portion 241, and the flange main body 23 includes a second limiting portion 231, the first limiting portion 241 and the second limiting portion 231 are arranged adjacent to the expansion member 22, and are used to detachably connect the flange soft body 24 on the peripheral side of the expansion member 22 with the flange main body 23.

[0079] The flange soft body 24 can be specifically arranged on a side of the flange main body 23 facing the milk suction channel 21 , and the nipple channel 211 and the breast cavity 212 can be formed on a side of the flange soft body 24 away from the flange main body 23 .

[0080] By arranging the flange soft body 24 at the position contacting the user's breast, it can produce slight deformation correspondingly when contacting the user's skin, thereby improving the fitting effect. Moreover, under the action of the first limiting part 241 and the second limiting part 231, when the expansion member 22 expands, the flange soft body 24 will not be displaced, but will be supported by the expansion member 22 to undergo elastic deformation, thereby changing the shape and size of the milk suction channel 21, and also maintaining the integrity of the inner wall of the milk suction channel 21, reducing the probability of milk leakage, air leakage, residual milk and other problems. At the same time, the flange soft body 24 and the flange main body 23 are detachably installed. Before and after the milk suction operation, the user can remove the flange soft body 24 for washing and / or disinfection to maintain hygiene and reduce the probability of contamination by microorganisms and dust.

[0081] Optionally, see Figure 4 Specifically, a docking groove 31 may be provided in the main unit 3. When the flange assembly 2 is assembled with the main unit 3, part of the docking groove 31 can cooperate with the flange body 23 to form a milk storage cavity, and the milk entering the breast pumping device 1 through the milk suction channel 21 will be stored in the milk storage cavity. Another part of the docking groove 31 can communicate with the air chamber 222, and part of the second air path 43 is directly formed in the docking groove 31.

[0082] Optionally, the breast pump device 1 may further include an annular bottom cover 6, which is arranged to cover the opening of the main body 3 where the docking groove 31 is formed, and the annular bottom cover 6 is detachably fixed to the main body 3. A limiting flange 232 is provided on the surface of the flange assembly 2 facing the docking groove 31, and a limiting groove 61 is correspondingly provided on the side of the annular bottom cover 6 facing the main body 3. The limiting flange 232 is engaged with the limiting groove 61 to limit the flange assembly 2.

[0083] Due to the existence of the limiting flange 232 and the limiting groove 61 , the installation method and installation direction of the flange assembly 2 and the main machine 3 are limited. The limiting flange 232 and the limiting groove 61 can play the role of preventing mistakes and limiting the flange assembly 2 .

[0084] The above description is only part of the implementation methods of the present application, and does not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A breast pumping device, characterized in that: include: A flange assembly (2), wherein the flange assembly (2) is formed with a milk suction channel (21) for accommodating a breast; A host machine (3), including a pump assembly (32); The flange component (2) is capable of deforming under the drive of the pump component (32) to change the shape and / or size of the milk suction channel (21).

2. The breast pump according to claim 1, characterized in that: The flange assembly (2) comprises an expansion member (22), and the expansion member (22) is configured to be able to expand toward the milk suction channel (21) when the pump assembly (32) is in operation.

3. The breast pump according to claim 2, characterized in that The expansion member (22) comprises an air bag (221), the pump assembly (32) comprises a pump body (321), a first air path (41) and a second air path (43) are formed in the breast pumping device (1), one end of the first air path (41) is connected to the atmosphere, and the other end is connected to the air intake port of the pump body (321), and one end of the second air path (43) is connected to the air outlet port of the pump body (321), and the other end is connected to the air bag (221).

4. The breast pump according to claim 3, characterized in that: The breast pumping device (1) further comprises a pressure sensor (5) and a control module (34); the pressure sensor (5) is used to obtain the pressure of the air bag (221); the pressure sensor (5) is arranged on the second air path (43); or the second air path (43) is connected to a second branch (44); the pressure sensor (5) is arranged on the second branch (44); The pressure sensor (5) is connected to the control module (34), and the control module (34) is connected to the pump assembly (32).

5. The breast pump according to claim 3, characterized in that: The breast pumping device (1) further comprises a negative pressure chamber (322) connected to the first air path (41), the negative pressure chamber (322) being connected to the air suction port of the pump body (321), and the negative pressure chamber (322) being used to apply negative pressure to the breast pumping channel (21).

6. The breast pump according to claim 5, characterized in that The pump assembly (32) further comprises a first valve body (323), wherein the first valve body (323) is used to control the opening and closing of the air path between the negative pressure chamber (322), the air outlet of the pump body (321) and the atmosphere.

7. The breast pump according to claim 5, characterized in that The pump assembly (32) further comprises a second valve body, wherein the second valve body is used to control the opening and closing of the air path between the air bag (221), the pump body (321) and the atmosphere.

8. The breast pump according to claim 7, characterized in that The breast pumping device (1) is further provided with a third air circuit (45), one end of the third air circuit (45) is connected to the second air circuit (43), and the other end is connected to the atmosphere, and the second valve body comprises a first sub-valve body (325) provided on the second air circuit (43) for controlling the on-off of the air circuit between the air bag (221) and the pump body (321), and a second sub-valve body (324) provided on the third air circuit (45) for controlling the on-off of the air circuit on the third air circuit (45).

9. The breast pump according to claim 2, characterized in that: The milk suction channel (21) comprises a nipple channel (211) and a breast cavity (212); the flange assembly (2) further comprises a flange body (23); the expansion member (22) is at least arranged on the inner wall of the flange body (23) facing the nipple channel (211); and the radial dimension of the nipple channel (211) decreases as the volume of the expansion member (22) increases.

10. The breast pump according to claim 9, characterized in that The flange assembly (2) further comprises a flange soft body (24), the expansion member (22) is arranged between the flange main body (23) and the flange soft body (24), and the flange soft body (24) and the flange main body (23) are detachably connected; The flange soft body (24) is elastic, the flange soft body (24) includes a first limiting portion (241), the flange main body (23) includes a second limiting portion (231), and the first limiting portion (241) and the second limiting portion (231) are used to detachably connect the flange soft body (24) on the peripheral side of the expansion piece (22) and the flange main body (23).

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