Breast pump apparatus

Abstract

Provided is a breast pump apparatus, comprising a flange assembly (2) and a main unit (3). The flange assembly (2) is formed with a breast pumping channel (21) configured for accommodating a breast; the main unit (3) comprises a pump assembly (32); the flange assembly (2) is deformable under the driving of the pump assembly (32) to change the shape and / or size of the breast pumping channel (21), such that the breast pump apparatus can adapt to breasts of different sizes and shapes.

Description

A breast pump device

[0001] Related applications

[0002] This application claims priority to Chinese applications filed on December 19, 2024, with application numbers 202411889774.4 and 202423158043.0, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of maternal and infant products technology, specifically to a breast pump device. Background Technology

[0004] With advancements in small household appliance technology, breast pumps have emerged that can effectively express and store breast milk, allowing infants to access it promptly when needed, greatly relieving the burden on breastfeeding women.

[0005] A breast pump needs to fit snugly against the user's breast to effectively apply negative pressure for milk expression; otherwise, problems such as air leakage, milk leakage, and milk buildup may occur. Therefore, to accommodate breasts of different sizes, most breast pumps come with several different flange assemblies, which users can change to achieve a snug fit. However, even for the same user, breast size and shape can vary at different times; therefore, users must select and adjust the flange assembly according to their individual needs when using the breast pump.

[0006] Application content

[0007] This application mainly provides a breast pumping device that can improve the versatility of the breast pumping device.

[0008] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide a breast pumping device, including a flange assembly and a main unit. The flange assembly forms a breast pumping channel for accommodating the breast; the main unit includes a pump assembly; the flange assembly is deformable under the drive of the pump assembly to change the shape and / or size of the breast pumping channel.

[0009] In one embodiment, the flange assembly includes an expansion member configured to expand into the milk suction channel during operation of the pump assembly.

[0010] In one specific embodiment, the expansion member includes an air bladder, the pump assembly includes a pump body, and the breast pumping device has a first air passage and a second air passage. One end of the first air passage is connected to the atmosphere and the other end is connected to the air intake of the pump body. One end of the second air passage is connected to the air outlet of the pump body and the other end is connected to the air bladder.

[0011] In one specific embodiment, the breast pumping device further includes a pressure sensor and a control module. The pressure sensor is used to acquire the pressure of the airbag. The pressure sensor is disposed in the second air passage, or the second air passage is connected to a second branch, and the pressure sensor is disposed in the second branch. The pressure sensor is connected to the control module, and the control module is connected to the pump assembly.

[0012] In one specific embodiment, the pump assembly further includes a negative pressure chamber connected to the first air passage, the negative pressure chamber being connected to the air intake of the pump body, and the negative pressure chamber being used to apply negative pressure to the milk suction channel.

[0013] In one specific embodiment, the pump assembly further includes a first valve body, which is used to control the opening and closing of the air passage between the negative pressure chamber, the air outlet of the pump body, and the atmosphere.

[0014] In one specific embodiment, the pump assembly further includes a second valve body, which is used to control the opening and closing of the air passage between the airbag, the pump body, and the atmosphere.

[0015] In one specific embodiment, the breast pumping device is further provided with a third air passage, one end of which is connected to the second air passage and the other end is connected to the atmosphere. The second valve body includes a first sub-valve body disposed in the second air passage for controlling the opening and closing of the air passage between the airbag and the pump body, and a second sub-valve body disposed in the third air passage for controlling the opening and closing of the air passage on the third air passage.

[0016] In one specific embodiment, the breast suction channel includes a nipple channel and a breast cavity, the flange assembly further includes a flange body, the expansion member is at least disposed 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.

[0017] In one specific embodiment, the flange assembly further includes a flange soft body, the expansion member is disposed between the flange body and the flange soft body, and the flange soft body is detachably connected to the flange body; wherein, the flange soft body is elastic, the flange soft body includes a first limiting portion, the flange 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 periphery of the expansion member to the flange body.

[0018] The beneficial effects of this application are as follows: Unlike the prior art, the embodiments of this application, by setting a pump assembly with a connecting flange assembly in the host, can deform the flange assembly by pumping fluid, thereby changing the shape and / or size of the breast pumping channel, so that the breast pumping channel can fit breasts of different sizes, shapes and sizes, and the breast pumping device can be adapted to different breasts without changing the flange assembly, thereby improving the versatility of the breast pumping device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 is a structural schematic diagram of the breast pumping device of this application from one angle;

[0021] Figure 2 is a structural schematic diagram of the breast pumping device of this application from another angle;

[0022] Figure 3 is a schematic diagram of the air passage structure in the breast pumping device of this application;

[0023] Figure 4 is a first cross-sectional view of the breast pumping device of this application.

[0024] Figure 5 is a cross-sectional structural schematic diagram of the expansion component of the breast pumping device of this application when it is expanded.

[0025] Figure 6 is a third cross-sectional view of the breast pumping device of this application;

[0026] Figure 7 is a cross-sectional view of the expansion component of the breast pumping device of this application when it contracts.

[0027] 1. Breast pumping device; 2. Flange assembly; 21. Breast pumping channel; 211. Nipple channel; 212. Breast cavity; 22. Expander; 221. Airbag; 222. Air chamber; 23. Flange body; 231. Second limiting part; 232. Limiting flange; 24. Flange soft body; 241. First limiting part; 3. Main unit; 31. Connecting groove; 32. Pump assembly; 321. Pump body; 322. Negative pressure chamber; 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 passage; 42, First branch; 43, Second air passage; 44, Second branch; 45, Third air passage; 5, Pressure sensor; 6, Annular bottom cover; 61, Limiting groove. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0029] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. 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 may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0030] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0031] With advancements in small household appliance technology, breast pumps have emerged that can effectively express and store breast milk, allowing infants to access it promptly when needed, greatly relieving the burden on breastfeeding women.

[0032] Breast pumps need to fit snugly against the user's breasts to effectively apply negative pressure for milk expression; otherwise, problems such as air leakage, milk leakage, and milk buildup may occur. Therefore, to accommodate breasts of different sizes, most breast pumps come with several flange assemblies of different sizes. Users can change the flange assemblies to ensure a snug fit between the breast and the pump.

[0033] However, even for the same user, the size and shape of their breasts vary at different times. When using a breast pump, users must select and install the appropriate flange assembly based on their specific needs. In most cases, this process requires users to repeatedly disassemble and reassemble the flange assembly, trying and comparing different options to ultimately determine the suitable one. This excessive disassembly and reassembly of the flange assembly can easily lead to various problems such as equipment damage, loose fastening, air leaks, and milk leaks, negatively impacting the lifespan and stability of both the breast pump and the flange assembly. Furthermore, multiple flange assemblies are prone to being lost or damaged during storage after delivery to the user.

[0034] In order to improve or solve the above technical problems, the inventors of this application, after long-term research, have proposed at least the following embodiments.

[0035] Referring to Figures 1-7, Figure 1 is a structural schematic diagram of the breast pump device of this application from one angle. Figure 2 is a structural schematic diagram of the breast pump device of this application from another angle. Figure 3 is a schematic diagram of the air passage structure in the breast pump device of this application. Figure 4 is a first cross-sectional structural schematic diagram of the breast pump device of this application. Figure 5 is a cross-sectional structural schematic diagram of the breast pump device of this application when the expansion member is expanded. Figure 6 is a third cross-sectional structural schematic diagram of the breast pump device of this application. Figure 7 is a cross-sectional structural schematic diagram of the breast pump device of this application when the expansion member is contracted. To solve the above-mentioned technical problems, this application provides a breast pump device 1 for connecting to a user's breast for breast pumping operations.

[0036] The breast pump device 1 may include a flange assembly 2 and a main unit 3. The flange assembly 2 has a breast pumping channel 21 formed within it for accommodating the breast, and the main unit 3 includes a pump assembly 32. The flange assembly 2 is deformable under the drive of the pump assembly 32, thereby changing the shape and / or size of the breast pumping channel 21.

[0037] Optionally, flange assembly 2 can be connected to pump assembly 32, which can provide the power required for deformation of flange assembly 2.

[0038] In the structure provided in this embodiment, by setting a pump assembly 32 connecting the flange assembly 2 in the host 3, the flange assembly 2 can be deformed by pumping fluid, thereby changing the shape and / or size of the breast pumping channel 21. This allows the breast pumping channel 21 to fit breasts of different sizes, shapes, and shapes, thus enabling the breast pumping device 1 to be adapted to different breasts without replacing the flange assembly 2, thereby improving the versatility of the breast pumping device 1. At the same time, since a large number of different models of flange assemblies 2 are not required, the design and mold-making costs for the manufacturer in producing the breast pumping device 1 are reduced, and there is no problem of losing a large number of flange assemblies 2 when delivered to the user.

[0039] In one specific embodiment of this application, the flange assembly 2 may include an expansion member 22. The volume of the expansion member 22 is configured to expand into the milk suction channel 21 during operation of the pump assembly 32.

[0040] Specifically, the expander 22 can be connected to the pump assembly 32, which provides power for the expansion of the expander 22.

[0041] The structure provided in this embodiment allows the pump assembly 32 to control the expansion member 22 to expand into the breast suction channel 21, thereby changing the shape and radial dimension of the breast suction channel 21. This enables the breast suction channel 21 to fit breasts of different sizes, shapes, and shapes, thus allowing the breast suction device 1 to be adapted to different breasts without replacing the flange assembly 2, thereby improving the versatility of the breast suction device 1.

[0042] In one specific embodiment of this application, the expansion member 22 may include an airbag 221, the pump assembly 32 may include a pump body 321, and the breast pumping device 1 has a first air passage 41 and a second air passage 43. One end of the first air passage 41 is connected to the atmosphere, and the other end is connected to the air intake of the pump body 321. One end of the second air passage 43 is connected to the air outlet of the pump body 321, and the other end is connected to the airbag 221.

[0043] In the structure provided in this embodiment, air is delivered to the pump body 321 via the first air passage 41. The pump body 321 then delivers this air to the airbag 221 via the second air passage 43, which inflates the airbag 221. This causes the volume of the airbag 221 to increase under the action of inflation, thereby expanding the expansion member 22 into the breast milk suction channel 21 and changing the shape and radial dimension of the breast milk suction channel 21.

[0044] Optionally, the breast pumping device 1 may be provided with an air chamber 222 that communicates with the air bag 221. When the pump body 321 inflates the air bag 221, the gas enters the air chamber 222, which increases the volume of the air bag 221, thereby expanding the expansion member 22 into the breast pumping channel 21 and changing the shape and radial dimension of the breast pumping channel 21.

[0045] Optionally, the airbag 221 can be spherical, ring-shaped, or other shapes to better fit the user's breast, reduce discomfort, and improve the usability of the breast pump 1.

[0046] Optionally, there can be multiple airbags 221, arranged in multiple layers from the outside to the inside along the breast pumping channel 21. The pump assembly 32 can inflate different airbags 221 to different degrees as needed, adjusting the position and pressure of squeezing the user's breast, further improving the fit for different breasts. Furthermore, by controlling the inflation and deflation of airbags 221 at different positions, the user's breast can be massaged, promoting lactation and improving the working efficiency of the breast pumping device 1.

[0047] In one specific embodiment of this application, the breast pumping device 1 may further include a pressure sensor 5 and a control module 34. The pressure sensor 5 is used to acquire the pressure of the airbag. Specifically, the pressure sensor 5 may be installed in the second air passage 43. The pressure sensor 5 is connected to the control module 34, and the control module 34 is connected to the pump assembly 32.

[0048] Optionally, the second air passage 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 to measure the air pressure inside the airbag 221.

[0049] Optionally, the breast pumping device 1 may also include a battery 33, which is connected to the control module 34 and the pump assembly 32 to supply power to the control module 34 and the pump assembly 32 so that the breast pumping device 1 can work normally.

[0050] With 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 obtain the air pressure of the airbag 221 using the pressure sensor 5, and then calculate the degree of inflation of the airbag 221. The control module 34 can control the pump assembly 32 to work according to the air pressure. By using the air pressure feedback mechanism, the working status of the pump assembly 32 can be effectively controlled, so that the airbag 221 can be inflated to a suitable shape and size according to the user's needs, which can improve the usability of the breast pumping device 1.

[0051] Optionally, the pressure sensor 5 can also be set on the side surface of the inflatable component 22, such as the airbag 221, facing the inside of the breast suction channel 21, so as to measure the pressure applied to the user's breast by the inflatable component 22 through the inner wall of the breast suction channel 21, which can intuitively show the position and force of squeezing the user's breast.

[0052] Optionally, the control module 34 may include a motherboard and control buttons. The control buttons may be located on the surface of the breast pump 1 away from the breast pump channel 21, so that users can control the pump assembly 32 by pressing, flicking, touching or other methods.

[0053] Furthermore, the control module 34 may also include a voice recognition component and a voice recording component. Users do not need to manually control it; they can directly input voice into the breast pump 1. The voice recognition component recognizes the voice received by the voice recording component and controls the pump component 32 according to the voice content.

[0054] Optionally, the control module 34 may also include a communication component capable of connecting to a server or client via wired and / or wireless communication. Users can input commands and send them to the communication component, or the server can send commands to the communication component, enabling the control module 34 to control the pump assembly 32 according to the commands.

[0055] In one specific embodiment of this application, the pump assembly 32 may further include a negative pressure chamber 322 connected to the first air passage 41. The negative pressure chamber 322 is connected to the air intake of the pump body 321, and the negative pressure chamber 322 is used to apply negative pressure to the breast pumping channel 21. The pump body 321 can also draw fluid from the negative pressure chamber 322, thereby reducing the volume of fluid in the negative pressure chamber 322. The negative pressure chamber 322 is used to apply negative pressure to the breast pumping channel 21, thereby promoting lactation in the user's breasts within the breast pumping channel 21.

[0056] Specifically, the negative pressure chamber 322 is isolated from the breast pumping channel 21 by an elastic membrane 322a. When the fluid volume in the negative pressure chamber 322 decreases, the air pressure in the breast pumping channel 21 is greater than that in the negative pressure chamber 322. At this time, under the action of negative pressure, the elastic membrane 322a collapses to one side of the negative pressure chamber 322, causing the volume of the breast pumping channel 21 to increase. This causes the air pressure in the breast pumping channel 21 to decrease until it is the same as that in the negative pressure chamber 322. At this time, the air pressure in the breast pumping channel 21 is lower than that outside, which can promote the user's breast milk secretion and realize the breast pumping process.

[0057] Furthermore, the fluid drawn from the negative pressure chamber 322 by the pump body 321 can be directly discharged through the air outlet of the pump body 321, or it can be input into the expansion member 22 to cause the expansion member 22 to expand.

[0058] In one specific embodiment of this application, the pump assembly 32 may further include a first valve body 323, which is used to control the opening and closing of the air passage between the negative pressure chamber 322, the air outlet of the pump body 321, and the atmosphere.

[0059] Specifically, the first valve body 323 can be disposed in the first air passage 41, and the volume of the negative pressure chamber 322 is variable. The first air passage 41 can be connected to a first branch 42, which is disposed between the first valve body 323 and the pump body 321. 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 decreases and the volume of the milk suction channel 21 increases.

[0060] With the structure provided in this embodiment, in addition to drawing air from the outside to fill the expansion member 22 through the first valve body 323, after closing the first valve body 323, the gas in the negative pressure chamber 322 can also be input into the pump body 321 through the first branch 42, and then this part of the gas is pumped to the expansion member 22. In this way, the volume of fluid in the negative pressure chamber 322 is reduced, and the expansion member 22 is expanded while the negative pressure chamber 322 applies negative pressure to the breast pumping channel 21, thereby changing the shape of the breast pumping channel 21, achieving a better fit effect, and further promoting the effect of lactation in the user's breast in the breast pumping channel 21.

[0061] In one specific embodiment of this application, the pump assembly 32 may further include a second valve body, which is used to control the opening and closing of the air passage between the airbag, the pump body and the atmosphere.

[0062] In one specific embodiment of this 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 also provided with a third air passage 45. One end of the third air passage 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 disposed in the third air passage 45, and the first sub-valve body 325 is disposed in the second air passage 43.

[0063] In the structure provided in this embodiment, when the second sub-valve 324 is open, the gas from the negative pressure chamber 322 can also be discharged directly through the third air passage 45 after passing through the pump body 321, without entering the airbag 221. When the second sub-valve 324 is closed and the first sub-valve 325 is open, the gas from the negative pressure chamber 322 can be used to inflate the airbag 221. While applying negative pressure to the breast pumping channel 21 using the negative pressure chamber 322, the expansion member 22 expands, changing the shape of the breast pumping channel 21, thereby improving the fit and further promoting lactation in the user's breasts within the breast pumping channel 21.

[0064] Optionally, when a large pressure difference is required between the negative pressure chamber 322 and the outside, 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 excessively large airbag 221 will affect the fit of the breast pump device 1 and provide a poor user experience. Therefore, by opening the second sub-valve 324, a large amount of gas can be directly discharged to the outside through the third air passage 45 and the second sub-valve 324, without adversely affecting the shape of the breast pump channel 21.

[0065] 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, and the third end 325c is connected to the air bag 221. The second end 325b to the third end 325c is unidirectionally connected.

[0066] Therefore, 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 in reverse. Instead, it can only be discharged to the outside from the first end 325a of the first sub-valve body 325.

[0067] With the structure provided in this embodiment, the inflation and deflation process of the airbag 221 can be effectively controlled by controlling the first sub-valve body 325, thereby allowing the shape and size of the breast pumping channel 21 to be adjusted according to needs, thus improving the usability of the suction device.

[0068] As shown in Figure 3, 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, and thus operate under the control of the control module 34. The workflow is as follows:

[0069] (1) The user connects the breast pumping channel 21 of the breast pumping device 1 to the breast, and then the first valve body 323 and the first sub-valve body 325 are opened while the second sub-valve body 324 is kept closed.

[0070] (2) The control module 34 controls the pump body 321 to draw in gas from the outside through the first air passage 41, and inputs it into the airbag 221 from the second end 325b of the first sub-valve body 325 through the second air passage 43, thereby adjusting the shape and size of the breast pumping channel 21. During the adjustment process, if too much gas is injected into the airbag 221, for example, if 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 some of the gas in the airbag 221 can be discharged to the outside through the first end 325a of the first sub-valve body 325.

[0071] (3) After the adaptation process of the breast pumping 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 draw in the gas in the negative pressure chamber 322 through the first branch 42, and discharges this gas to the outside through the third air passage, so as to apply negative pressure to the breast pumping channel 21, thereby enabling the breast pumping process to begin.

[0072] (4) After the milk expression process is completed, the first valve body 323 opens, and the outside gas naturally enters the first branch 42 through the first air passage 41, so that the negative pressure chamber 322 returns to normal pressure, and then the milk expression 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 outline shape of the milk expression channel 21 returns to the initial state.

[0073] (5) The user removes the breast from the breast suction channel 21, and the entire breast suction process is completed.

[0074] The first valve body 323 can be a normally open solenoid valve, and the second sub-valve body 324 can be a normally closed solenoid valve.

[0075] In one specific embodiment of this application, the breast 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. An expansion member 22 is at least disposed on the inner wall of the flange body 23 facing the nipple channel 211. The radial dimension of the nipple channel 211 can decrease as the volume of the expansion member 22 increases.

[0076] The flange body 23 can be made of rigid materials, such as rigid plastics or alloys, to improve the structural stability of the flange body 23 and reduce the probability of deformation.

[0077] Optionally, when the airbag 221 is not filled with gas, the airbag 221 is in a naturally compressed state, and the diameter of the nipple channel 211 can be 24-30 mm. When the airbag 221 is inflated to its maximum extent, the diameter of the nipple channel 211 can be 11-15 mm.

[0078] For users, the differences between breasts are most evident in the nipple area, which is also a key lactation site. Therefore, the expansion member 22 can be installed at least on the inner wall of the flange body 23 facing the nipple channel 211. Since the flange body 23 is made of rigid material, when the volume of the expansion member 22 changes, under the pressure of the flange body 23, the expansion member 22 expands into the milk suction channel 21, so that the shape and size of the nipple channel 211 can be changed according to the needs, which can stably limit the nipple and thus improve the adaptability of the milk suction device 1.

[0079] Furthermore, based on the multiple airbags 221 scheme, the pump assembly 32 can inflate different airbags 221 to different degrees as needed, thereby adjusting the position and force of squeezing the user's nipple, mimicking the natural sucking action of an infant, and massaging the user's breast to promote lactation and improve the working efficiency of the breast pump 1.

[0080] In one specific embodiment of this application, the flange assembly 2 may further include a flange soft body 24, an expansion member 22 is disposed between the flange body 23 and the flange soft body 24, and the flange soft body 24 can be detachably connected to the flange body 23.

[0081] The flange soft body 24 may be elastic. Specifically, the flange soft body 24 may include a first limiting part 241, and the flange body 23 includes a second limiting part 231. The first limiting part 241 and the second limiting part 231 are disposed adjacent to the expansion member 22 for detachably connecting the flange soft body 24 around the expansion member 22 to the flange body 23.

[0082] Specifically, the flange soft body 24 can be set on the side of the flange body 23 facing the breast suction channel 21, and the nipple channel 211 and breast cavity 212 can be formed on the side of the flange soft body 24 away from the flange body 23.

[0083] By incorporating a flange soft body 24 at the point of contact with the user's breast, it can undergo subtle deformation upon contact with the user's skin, improving the fit. Furthermore, under the action of the first limiting part 241 and the second limiting part 231, the flange soft body 24 does not shift when the expansion member 22 expands; instead, it is supported by the expansion member 22 and undergoes elastic deformation, thereby changing the shape and size of the breast pumping channel 21. This also maintains the integrity of the inner wall of the breast pumping channel 21, reducing the probability of problems such as milk leakage, air leakage, and residual milk. Simultaneously, the flange soft body 24 is detachably installed from the flange body 23. Before and after breast pumping, 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.

[0084] Optionally, referring to Figure 4, the main unit 3 may be provided with a docking groove 31. 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 chamber, and the milk entering the milk pumping device 1 through the milk pumping channel 21 will be stored in the milk storage chamber. Another part of the docking groove 31 can be connected to the air chamber 222, and part of the second air passage 43 is directly formed in the docking groove 31.

[0085] Optionally, the breast pumping device 1 may further include an annular bottom cover 6, which covers the opening of the docking groove 31 formed by the main unit 3, and the annular bottom cover 6 is detachably fixed to the main unit 3. A limiting flange 232 is provided on the side of the flange assembly 2 facing the docking groove 31, and a corresponding limiting groove 61 is provided on the side of the annular bottom cover 6 facing the main unit 3. The limiting flange 232 and the limiting groove 61 engage to limit the flange assembly 2.

[0086] The presence of the limiting flange 232 and the limiting groove 61 restricts the installation method and direction of the flange assembly 2 and the main unit 3. The limiting flange 232 and the limiting groove 61 can play the role of preventing mistake and limiting the flange assembly 2.

[0087] The above description is only a partial embodiment of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A breast pumping device, wherein, include: Flange assembly (2), the flange assembly (2) having a breast suction channel (21) for receiving the breast; The main unit (3) includes a pump assembly (32); The flange assembly (2) is deformable under the drive of the pump assembly (32) to change the shape and / or size of the milk suction channel (21).

2. The breast pumping device according to claim 1, wherein, The flange assembly (2) includes an expansion member (22) configured to expand into the milk suction channel (21) when the pump assembly (32) is in operation.

3. The breast pumping device according to claim 2, wherein, The expansion member (22) includes an air bladder (221), the pump assembly (32) includes a pump body (321), and the breast pumping device (1) has a first air passage (41) and a second air passage (43). One end of the first air passage (41) is connected to the atmosphere and the other end is connected to the air intake of the pump body (321). One end of the second air passage (43) is connected to the air outlet of the pump body (321) and the other end is connected to the air bladder (221).

4. The breast pumping device according to claim 3, wherein, The breast pumping device (1) further includes a pressure sensor (5) and a control module (34). The pressure sensor (5) is used to obtain the pressure of the airbag (221). The pressure sensor (5) is located in the second air passage (43). Alternatively, the second air passage (43) is connected to a second branch (44), and the pressure sensor (5) is located in the second branch (44). The pressure sensor (5) is connected to the control module (34), which is connected to the pump assembly (32).

5. The breast pumping device according to claim 3, wherein, The breast pumping device (1) further includes a negative pressure chamber (322) connected to the first air passage (41). The negative pressure chamber (322) is connected to the air intake of the pump body (321). The negative pressure chamber (322) is used to apply negative pressure to the breast pumping channel (21).

6. The breast pumping device according to claim 5, wherein, The pump assembly (32) further includes a first valve body (323), which is used to control the opening and closing of the air passage between the negative pressure chamber (322), the air outlet of the pump body (321), and the atmosphere.

7. The breast pumping device according to claim 5, wherein, The pump assembly (32) further includes a second valve body, which is used to control the opening and closing of the air passage between the airbag (221), the pump body (321), and the atmosphere.

8. The breast pumping device according to claim 7, wherein, The breast pumping device (1) is also provided with a third air passage (45), one end of which is connected to the second air passage (43) and the other end is connected to the atmosphere. The second valve body includes a first sub-valve body (325) provided in the second air passage (43) for controlling the air passage between the airbag (221) and the pump body (321), and a second sub-valve body (324) provided in the third air passage (45) for controlling the air passage on the third air passage (45).

9. The breast pumping device according to claim 2, wherein, The breast suction channel (21) includes a nipple channel (211) and a breast cavity (212). The flange assembly (2) also includes a flange body (23). The expansion member (22) is at least disposed on the inner wall of the flange body (23) facing the nipple channel (211). The radial dimension of the nipple channel (211) decreases as the volume of the expansion member (22) increases.

10. The breast pumping device according to claim 9, wherein, The flange assembly (2) further includes a flange soft body (24), the expansion member (22) is disposed between the flange body (23) and the flange soft body (24), and the flange soft body (24) is detachably connected to the flange body (23); The flange soft body (24) is elastic and includes a first limiting part (241). The flange body (23) includes a second limiting part (231). The first limiting part (241) and the second limiting part (231) are used to detachably connect the flange soft body (24) on the periphery of the expansion member (22) to the flange body (23).

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