Breast pump

Abstract

A breast pump (100), comprising a first accommodation portion (211) for accommodation a breast, a suction diaphragm (23), and a second accommodation portion (31). The suction diaphragm (23) is used for at least partially defining a deformable sealing cavity (231), and the second accommodation portion (31) can at least partially accommodate the deformable sealing cavity (231). The deformable sealing cavity (231) is in fluid communication with a negative pressure pump (11) and is configured to contract under the action of the negative pressure pump (11). The first accommodation portion (211) can be provided with a first opening (212), the second accommodation portion (31) being in fluid communication with the first accommodation portion (211) by means of the first opening (212). When the deformable sealing cavity (231) contracts, a negative pressure space is formed in the second accommodation portion (31), so as to transfer a negative pressure to the first accommodation portion (211) via the first opening (212), such that the breast secretes milk under the action of the negative pressure. The deformable sealing cavity (231) can completely prevent milk from flowing to the negative pressure pump (11).

Description

breast pump Technical Field

[0001] The present application relates to a breast pump, and in particular to an integrated breast pump. Background Art

[0002] A breast pump is a device used to express breast milk that accumulates in the mammary glands. When a baby is unable to directly suckle, a breast pump is needed to extract the breast milk accumulated in the mammary glands. A breast pump can liberate women, allowing them to temporarily separate from their babies and participate in social life and work while breastfeeding. It can also help babies who have difficulty sucking to get breast milk. It also allows for effective monitoring of infant intake and helps them adjust to the bottle.

[0003] In order to facilitate use by women, it is necessary to provide a breast pump that is simple in structure, easy to disassemble and clean, and easy to carry.

[0004] Summary of the Invention

[0005] The purpose of the present application is to provide a breast pump which has a simple structure, is easy to disassemble and clean, and is convenient to carry.

[0006] In order to achieve the above-mentioned purpose, the present application provides a breast pump. The breast pump may include a first accommodating portion for accommodating a breast, a suction diaphragm, and a second accommodating portion. The suction diaphragm is used to at least partially define a deformable sealed cavity, and the second accommodating portion can at least partially accommodate the deformable sealed cavity. The deformable sealed cavity is in fluid communication with a negative pressure pump and is configured to shrink under the action of the negative pressure pump. The first accommodating portion may be provided with a first opening, wherein the second accommodating portion is in fluid communication with the first accommodating portion through the first opening. When the deformable sealed cavity shrinks, a negative pressure space is formed in the second accommodating portion to transmit negative pressure to the first accommodating portion through the first opening. The breast secretes milk under the action of negative pressure. The deformable sealed cavity can completely prevent milk from flowing to the negative pressure pump.

[0007] Other features and advantages of the application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the present application but do not constitute a limitation of the present application. In the accompanying drawings:

[0009] FIG1 shows a cross-sectional view of a breast pump according to an embodiment of the present application;

[0010] FIG2 shows a cross-sectional view of a host assembly according to an embodiment of the present application;

[0011] FIG3 is a cross-sectional view showing a portion of the structure of the cover, the first cavity, and the negative pressure chamber assembly according to an embodiment of the present application;

[0012] FIG4 shows a schematic diagram of the cover body, the first cavity, the retaining portion and the suction diaphragm being integrally formed;

[0013] FIG5 shows a cross-sectional view of a negative pressure hatch cover and container assembly according to an embodiment of the present application;

[0014] FIG6 shows a top view of a negative pressure hatch cover and container assembly according to an embodiment of the present application;

[0015] FIG7 shows a schematic diagram of the negative pressure hatch cover and the one-way valve being integrally formed;

[0016] FIG8 shows a schematic diagram of the assembly of the negative pressure chamber assembly and the one-way valve; and

[0017] FIG9 shows a front view of a breast pump according to an embodiment of the present application, wherein a portion of the housing is transparent for ease of illustration.

[0018] Explanation of reference numerals: 100 breast pump; 1 main unit assembly; 10 housing; 11 negative pressure pump; 12 solenoid valve; 13 three-way pipe; 14 retractable positioning bead; 111 connecting pipe; 2 negative pressure chamber assembly; 21 cover; 22 holding portion; 23 suction diaphragm; 211 first accommodating portion; 212 first opening; 213 second opening; 221 first cavity; 222 first channel; 223 second channel; 224 first protrusion; 231 deformable sealing cavity; 232 first extension portion; 233 edge of suction diaphragm; 3 container assembly; 31 second accommodating portion; 32 one-way valve; 33 milk collecting container; 321 support portion; 322 suction portion; 311 groove; 312 first through hole; 313 exhaust groove; 314 negative pressure chamber cover; 331 second protrusion DETAILED DESCRIPTION

[0019] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0020] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this patent. In the description of this application document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected or set, or detachably connected or set, or connected or set as a whole. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to the specific circumstances.

[0021] It should be noted that in the description of this application, the terms "first" and "second" are used solely to facilitate description of different elements and should not be understood to indicate or imply a sequential relationship, relative importance, or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0022] As shown in Figures 1-9, the present application provides a breast pump 100, which may include a main body assembly 1, a first accommodating portion 211, a negative pressure chamber assembly 2 and a container assembly 3.

[0023] As shown in Figures 2 and 9, the main unit assembly 1 includes a housing 10, which may contain a negative pressure pump 11. The negative pressure pump 11 is used to generate negative pressure, and the magnitude and frequency of the negative pressure generated by the negative pressure pump 11 are controllable. The magnitude and frequency of the negative pressure generated by the negative pressure pump 11 can be controlled by a controller according to a pre-set program.

[0024] The first accommodating portion 211 is used to at least partially accommodate a breast. The first accommodating portion 211 may be provided with a first opening 212. As shown in FIG3 , the first accommodating portion 211 may include a housing 21 and a first cavity 221. The first opening 212 may be provided on the housing 21 or the first cavity 221, wherein a first passage 222 may extend from the first opening 212 to the exterior of the first accommodating portion 211. FIG3 illustrates a schematic diagram of the first opening 212 provided on the first cavity 221.

[0025] The cover 21 is funnel-shaped and configured to at least partially accommodate the breast. The cover 21 can be a single-layered cover, which can be made of hard plastic. Alternatively, the cover 21 can be a double-layered cover, in which the outer cover can be made of hard plastic to serve as a support, and the inner cover can be made of soft plastic to better fit the breast. The outer and inner covers can be integrally formed and fused together. The hard plastic can be, for example, a plastic such as TRITAN, PPSU, or PP. The soft plastic can be, for example, an elastomeric material such as silicone, TPE, or TPU.

[0026] The first cavity 221 is used to at least partially accommodate the nipple. The first cavity 221 includes a second opening 213 and the first opening 212. The first cavity 221 is connected to the housing 21 via the second opening 213. The second opening 213 is connected to the bottom through-hole of the funnel-shaped housing. This connection can be achieved, for example, through integral molding. Alternatively, it can be achieved through tight fitting, ultrasonic welding, or other methods. The size of the second opening 213 can be the same as, or substantially the same as, the size of the bottom through-hole of the funnel-shaped housing.

[0027] The first opening 212 extends outward from the first cavity 221 to form a first channel 222. The first cavity 221 and the first channel 222 form a curved channel. The first opening 212 can be located anywhere on the sidewall of the first cavity 221. However, to ensure that negative pressure is evenly applied to the breast through the first cavity, it is preferably located distally from the second opening 213. For example, the second opening 213 and the first opening 212 can be located at opposite ends of the first cavity 221. The centerline of the first channel 222 and the centerline of the first cavity 221 can form any angle. The centerline of the first channel 222 and the centerline of the first cavity 221 can be perpendicular. Correspondingly, the centerline of the second opening 213 and the centerline of the first opening 212 are also perpendicular to each other, facilitating smooth flow of milk into the first channel 222. The first channel 222 connects the first cavity 221 and the milk collection container 33, allowing milk to flow into the milk collection container 33 through the first channel 222. The negative pressure generated by the negative pressure pump 11 acts on the breast through the first channel 222 and the first cavity 221 , and the milk secreted from the breast flows from the first cavity 221 into the first channel 222 .

[0028] The negative pressure chamber assembly 2 may include a suction diaphragm 23 and a second receiving portion 31. The suction diaphragm 23 is used to at least partially define a deformable sealed cavity 231. The second receiving portion 31 may at least partially receive the deformable sealed cavity 231.

[0029] The second accommodating portion 31 is in fluid communication with the first accommodating portion 211 via the first opening 212. When the deformable sealed cavity 231 contracts, a negative pressure space is formed within the second accommodating portion 31. This negative pressure space is at least partially defined by the outer wall of the suction diaphragm 23 and the inner wall of the second accommodating portion 31. This negative pressure space transmits negative pressure to the first accommodating portion 211 via the first opening 212. Furthermore, milk within the first accommodating portion 211 can be discharged into the second accommodating portion 31 via the first opening 212.

[0030] A first channel 222 extending from the first opening 212 can be at least partially accommodated within the second accommodating portion 31, such that the second accommodating portion 31 is in fluid communication with the first accommodating portion 211 via the first channel 222. The negative pressure space transmits negative pressure to the first accommodating portion 211 via the first channel 222. Furthermore, milk within the first accommodating portion 211 can be discharged into the second accommodating portion 31 via the first channel 222.

[0031] While the negative pressure pump 11 is outputting negative pressure, it draws air from the deformable sealed cavity 231, causing it to contract. This creates a negative pressure space between the outer wall of the deformable sealed cavity 231 and the inner wall of the second accommodating portion 31. The negative pressure within this negative pressure space acts on the breast through the curved channel (formed by the first channel 222 and the first cavity 221), causing the breast to secrete milk. Milk flows through the curved channel into the second accommodating portion 31.

[0032] The deformable sealing cavity 231 can completely prevent the milk in the second receiving portion 31 from entering the negative pressure pump 11. In addition, the milk and negative pressure share the first channel 222 and the second receiving portion 31, which can reduce the number of components of the breast pump, thereby helping to reduce the size of the breast pump and making it easier to carry.

[0033] The second accommodating portion 31 may be an accommodating portion of any shape that can cooperate with the deformable sealing cavity 231 to form a negative pressure space.

[0034] The second receiving portion 31 may include a retaining portion 22 and a negative pressure hatch 314. The retaining portion 22 may at least cover the opening of the negative pressure hatch 314 to form the second receiving portion 31. The first channel 222 may pass through the retaining portion 22 and be at least partially received in the negative pressure hatch 314.

[0035] The suction diaphragm 31 itself can form the deformable sealing cavity 231 , or the suction diaphragm 23 can be sleeved on the holding portion 22 to cooperate with the holding portion 22 to form the deformable sealing cavity 231 .

[0036] The suction diaphragm 23 can surround the outer wall of the first channel 222 to form a deformable sealed cavity 231. Alternatively, the suction diaphragm 23 can be sleeved onto other components of the retaining portion 22 adjacent to the first channel 222 to form the deformable sealed cavity 231. The suction diaphragm 23 can be formed of an elastic material to facilitate the contraction and recovery of the deformable sealed cavity. For example, the elastic material can be an elastomeric material such as silicone, TPE, or TPU.

[0037] A second channel 223 may be provided on the retaining portion 22. The center line of the second channel 223 may be parallel to the center line of the first channel 222. The deformable sealed cavity 231 is in fluid communication with the negative pressure pump through the second channel 223. The second channel 223 is connected to the negative pressure pump 11 through the connecting pipe 111. The second pipe 223 may be sealedly connected to the connecting pipe 111 through a tee, and the third end of the tee may be connected to the solenoid valve. During the period when the negative pressure pump 11 outputs negative pressure, the solenoid valve is controlled to close to prevent air leakage. During the period when the negative pressure pump 11 stops outputting negative pressure, the solenoid valve is controlled to open, and outside air flows into the deformable sealed cavity 231 through the solenoid valve, prompting the deformable sealed cavity 231 to return to its original state.

[0038] The outer edge of the deformable sealed cavity 231 can be snapped onto the retaining portion 22. For example, a first raised portion 224 can be provided on the retaining portion 22 around the first channel 222, and the outer edge of the deformable sealed cavity 231 can be sealingly secured to the first raised portion 224. For example, the outer edge of the deformable sealed cavity 231 can be sealingly snapped, bonded, or ultrasonically welded to the first raised portion 224. By sealing the deformable sealed cavity 231, air leakage can be prevented when the deformable sealed cavity 231 contracts under force, thereby reducing the negative pressure generated. Furthermore, the deformable sealed cavity 231 is in fluid communication with the negative pressure pump 11 via the second channel 223 and the connecting conduit 111. Sealing the deformable sealed cavity 231 prevents milk flowing into the negative pressure space from entering the deformable sealed cavity 231 and further into the connecting conduit 111 and the negative pressure pump 11. The deformable sealed cavity 231 can have various shapes, such as an annular cavity or a square cavity. The first protrusion 224 arranged around the first channel 222 may have a predetermined distance from the first channel 222 , and this distance can make the upper and lower diameters of the formed deformable sealing cavity 231 substantially consistent.

[0039] The first cavity 221 and the holding portion 22 may be formed of hard plastic, such as TRITAN, PPSU, or PP.

[0040] Although the first receiving portion 211 and the negative pressure chamber assembly 2 are described above as two components, this is not limiting, and the first receiving portion 211 may be included in the negative pressure chamber assembly 2. Furthermore, the second receiving portion 31 is not limited to being included in the negative pressure chamber assembly 2, and may be included in the container assembly 3.

[0041] As shown in Figure 9, the main unit component 1 may also include a solenoid valve 12 and a three-way pipe 13 arranged in the shell 10. The negative pressure pump 11, the solenoid valve 12 and the negative pressure cabin assembly 2 can be sealed and connected by the three-way pipe 13. The first end of the three-way pipe 13 is sealed and connected to the negative pressure pump 11 through the connecting pipe 111, the second end is sealed and connected to the second channel 223 of the negative pressure cabin assembly 2, and the third end is sealed and connected to the solenoid valve 12. During the period when the negative pressure pump 11 outputs negative pressure, the solenoid valve 12 is controlled to close to prevent air leakage. During the period when the negative pressure pump 11 stops outputting negative pressure, the solenoid valve 12 is controlled to open, and the outside air flows into the deformable sealed cavity 231 through the solenoid valve 12, so that the shrunken deformable sealed cavity 231 returns to its original state.

[0042] The first receiving portion 211 , the holding portion 22 and the suction diaphragm 23 may be integrally formed.

[0043] As shown in Figure 4, the cover body 21, the first cavity 221, the retaining portion 22 and the suction diaphragm 23 can be formed in one piece, for example, by injection molding. During the one-piece molding, the suction diaphragm 23 is injection-molded on the periphery of the first channel 222 using soft glue to form a structure similar to a speaker. The edge of the speaker-like structure is turned up to be snapped onto the retaining portion 22, thereby forming a deformable sealed cavity 231. When cleaning, the edge of the suction diaphragm 23 can be removed from the retaining portion 22 to clean the suction diaphragm 23, which is also beneficial for drying the suction diaphragm 23 after cleaning. A first protrusion 224 can be provided on the retaining portion 22 around the first channel 222, and the edge 233 of the suction diaphragm 23 can be sealingly fixed to the first protrusion 224. For example, the edge 233 of the suction diaphragm 23 and the first protrusion 224 can be snapped, or can be bonded or ultrasonically welded.

[0044] Integral molding of the cover body 21, the first cavity 221, the retaining portion 22 and the suction diaphragm 23 has the following advantages: it avoids disassembly and assembly between the cover body 21, the first cavity 221, the retaining portion 22 and the suction diaphragm 23, thereby reducing running-in loss and improving service life; it facilitates disassembly and assembly between the integrally molded parts and the main body components, as well as facilitating cleaning of the exterior of the integrally molded parts, and the number of parts that need to be cleaned is smaller; a smooth surface is formed by integral molding, reducing the possibility of dirt and grime.

[0045] The cover body 21, the first cavity 221, the retaining portion 22, and the suction diaphragm 23 can also be formed separately and then assembled to form the negative pressure chamber assembly 2. Alternatively, the cover body 21, the first cavity 221, and the retaining portion 22 can be integrally formed and then assembled with the suction diaphragm. Alternatively, the first cavity 221, the retaining portion 22, and the suction diaphragm 23 can be integrally formed and then assembled with the cover body 21. Compared to assembly, integral molding avoids disassembly and assembly between the cover body 21, the retaining portion 22, and the suction diaphragm 23, thereby reducing wear-in losses and increasing service life.

[0046] As shown in Figures 5 and 6, the negative pressure hatch 314 is provided with a groove 311 for accommodating the deformable sealing cavity 231. The bottom of the groove 311 is provided with a first through hole 312 connected to the one-way valve 32. The shape of the groove 311 can be consistent with the shape of the deformable sealing cavity 231.

[0047] The negative pressure hatch cover 314 is detachably connected to the holding portion 22, and the negative pressure hatch cover 314 can preferably be sealed to the holding portion 22. The negative pressure hatch cover 314 can be sealed to the deformable sealing cavity 231, thereby achieving a sealed connection to the holding portion 22.

[0048] The inner wall of the groove 311 of the negative pressure hatch cover 314 may be provided with a first recess (not shown), and the outer wall of the deformable sealing chamber 231 may be provided with a first extension 232, with the first extension 232 in close contact with the recess. The first recess may be provided as one or more circles of recesses along the inner wall of the groove 311, and accordingly, the first extension 232 may be provided as one or more circles of extensions along the outer wall of the deformable sealing chamber. Alternatively, the first recess may be provided as one or more sections along the inner wall of the groove 311, and accordingly, the first extension 232 may be provided as one or more sections along the outer wall of the deformable sealing chamber.

[0049] Alternatively, the negative pressure hatch cover 314 can be sealed with the deformable sealing cavity 231 by extrusion, thereby achieving a sealed connection with the retaining portion 22. Specifically, a first extension portion 232 can be provided on the outer wall of the deformable sealing cavity 231. The first extension portion 232 is flexible, thereby enabling the negative pressure hatch cover 314 to be sealed with the retaining portion 22 by extrusion. The first extension portion 232 can be one or more rings of extensions provided along the outer wall of the deformable sealing cavity. Alternatively, the first extension portion 232 can be one or more sections provided along the outer wall of the deformable sealing cavity.

[0050] The negative pressure cabin assembly 2 may further include a one-way valve 32. The one-way valve 32 is connected to the negative pressure cabin cover 314 via a first through hole 312. The negative pressure cabin cover 314 may be formed of hard rubber, and the one-way valve 32 may be formed of soft rubber. The soft rubber may be, for example, silicone, and the one-way valve 32 is a one-way silicone valve. The shape of the one-way valve 32 may be arbitrary, for example, vertical or flat. The one-way valve 32 may be detachably mounted on the first through hole 312 of the negative pressure cabin cover 314, and the first through hole 312 may be arranged to extend a distance from the groove 311 so as to be easily mounted by the one-way valve. As shown in FIG. 7 , in an optional case, the one-way valve 32 may be integrally formed with the negative pressure cabin cover 314. During the integral molding, a layer of soft rubber may be formed around the groove 311 of the negative pressure cabin cover 314, and the layer of soft rubber is integral with the one-way valve 31. In the case where the one-way valve 32 is flat, the one-way valve may include a support portion 321 and a suction portion 322. The support portion 321 is nested on the outside of the first through hole 312, and the suction portion 322 is connected to the support portion 321 and disposed opposite to the first through hole 312.

[0051] During the period when the negative pressure pump 11 outputs negative pressure, the solenoid valve 12 is controlled to close, and the negative pressure pump 11 sucks air from the deformable sealed cavity 231 through the second channel 223, causing the deformable sealed cavity 231 to contract, thereby increasing the space between the outer wall of the deformable sealed cavity 231 and the negative pressure hatch 314, thereby generating negative pressure in the negative pressure space. The generated negative pressure can cause the suction portion 322 to be attracted to the first through hole 312, thereby sealing the first through hole 312. At the same time, the generated negative pressure acts on the breast through the curved channel (formed by the first channel 222 and the first cavity 221), causing the breast to secrete milk. Milk flows into the negative pressure space through the curved channel. The closure of the one-way valve allows the negative pressure generated in the negative pressure space to act almost completely on the breast, thereby smoothly secreting milk.

[0052] When the negative pressure pump 11 stops outputting negative pressure, the solenoid valve 12 is controlled to open, allowing outside air to flow into the deformable sealed cavity 231 through the solenoid valve 12, causing the contracted deformable sealed cavity 231 to return to its original state. The negative pressure in the negative pressure space is no longer negative, causing the suction portion 322 to no longer be attracted to the first through hole 312, leaving a certain gap between the two. This allows milk to flow through the one-way valve 32 to the milk collection container 33. The size of the suction portion 322 can be substantially the same as that of the first through hole 312, so that the first through hole 312 can be completely covered.

[0053] As shown in Figure 8, after the negative pressure chamber assembly 2 and the one-way valve 32 are assembled, the deformable sealed cavity 231, the one-way valve 32, the first channel 222, and the first cavity 221 form a negative pressure working chamber. Specifically, when the negative pressure pump 11 is delivering negative pressure, the negative pressure from the negative pressure pump 11 causes the deformable sealed cavity 231 to contract, reducing the air pressure within the groove 311 and causing the one-way valve 32 to close. This negative pressure acts on the breast through the curved channel (formed by the first channel 222 and the first cavity 221), causing milk secretion. When the negative pressure pump 11 stops delivering negative pressure, the deformable sealed cavity 231 returns to its original shape, and the air pressure within the groove 311 subsequently returns to normal, causing the one-way valve 32 to no longer be closed. Under the influence of gravity, milk flows through the curved channel, the first through-hole 312, and the one-way valve 32 to the milk collection container 33.

[0054] The container assembly 3 includes a milk collection container 33. The milk collection container 33 has an opening, through which the negative pressure hatch 314 and the one-way valve 32 are housed. Milk flowing out of the one-way valve 32 flows into the milk collection container 33. The one-way valve 32 ensures airtightness within the milk collection container 33, preventing milk from flowing back into the container 33 and enhancing the user experience.

[0055] Optionally, the top edge of the negative pressure hatch 314 is provided with an outwardly extending extension, which can be engaged with the edge of the opening of the milk collection container 33, while the rest of the negative pressure hatch 314 is accommodated in the milk collection container 33. The opening of the milk collection container 33 can be a protruding opening at the upper end, wherein the opening can be, for example, a circular opening, a square opening, or any other polygonal opening.

[0056] Further, optionally, the opening of the milk collection container 33 can be sealed with the negative pressure hatch 314. In this case, a venting groove 313 can be provided at the sealed connection to allow air inside the milk collection container 33 to escape, maintaining the internal pressure consistent with the external pressure, thereby allowing milk to flow smoothly into the milk collection container 33. As shown in Figure 8, during the integral molding of the second receiving portion and the one-way valve, one or more venting grooves 313 can be provided in the soft rubber layer formed around the groove 311 of the negative pressure hatch 314. If the opening of the milk collection container 33 is not sealed with the negative pressure hatch 314, the venting grooves 313 are not required.

[0057] The negative pressure hatch 314 is accommodated in the opening of the milk collection container 33. Therefore, the sealed connection between the negative pressure hatch 314 and the holder 22 also achieves a sealed connection between the milk collection container 33 and the holder 22. In addition, the support provided by the opening of the milk collection container 33 can promote the sealing between the negative pressure hatch 314 and the holder 22.

[0058] The milk collecting container 33 is detachably connected to the main unit assembly 1 .

[0059] Optionally, the milk collection container 33 may be provided with a positioning groove (not shown), and the housing 10 of the main unit assembly 1 may be provided with a retractable positioning bead 14. When the milk collection container 33 is installed, the retractable positioning bead 14 engages with the positioning groove, securing the milk collection container 33. There may be one or more retractable positioning beads 14, and accordingly, there may also be one or more positioning grooves. The milk collection container 33 can be removed by force. Alternatively, the retractable positioning bead 14 can be controlled to extend or retract by a button (not shown), allowing the installation and removal of the milk collection container 33 to be controlled by a button.

[0060] Optionally, one or more second recesses (not shown) may be arranged on the outer wall of the opening of the milk collection container 33. Accordingly, the outer shell of the main unit assembly 1 may be provided with one or more second extensions (not shown) that can be inserted into these second recesses. The second extensions can be inserted into or removed from the second recesses by rotating, thereby installing or removing the milking container 33. The second recesses may be formed on the second protrusion 331 on the outer wall of the opening of the milk collection container 33. Alternatively, the second recesses may be arranged on the outer shell of the main unit assembly 1, while the second extensions may be arranged on the outer wall of the opening of the milk collection container 33. The one or more second recesses and the one or more second extensions may be arranged in a surrounding pattern.

[0061] The milk collection container 33 can be detachably connected to the main unit assembly 1 by one or both of the above methods, but the present application is not limited thereto. The milk collection container 33 can also be detachably connected to the main unit assembly 1 by other methods. In some optional embodiments, the milk collection container 33 can also be detachably connected to the negative pressure chamber assembly 2.

[0062] The bottom of the milk collecting container 33 may be provided with a flat and standable standing surface. The shape of the milk collecting container 33 may be any shape that can form a bottle shape, or any shape that matches the appearance of the breast pump 100.

[0063] As shown in Figure 9, the housing 10 of the breast pump 100 may be provided with a touch panel or buttons for adjusting the operating mode, negative pressure level, operating frequency, and / or time, where different operating modes may correspond to different negative pressure levels, operating frequencies, and time. The housing may also be provided with a display screen for displaying the operating mode, negative pressure level, operating frequency, time, and / or battery level. A battery and a controller may also be provided within the housing 10. The battery may be a rechargeable battery. The controller may control the solenoid valve 12 and the negative pressure pump 11. When the breast pump 100 is activated or an operating mode is selected, the controller controls the solenoid valve 12 and the negative pressure pump 11 according to a pre-set program.

[0064] During the period when the negative pressure pump 11 generates negative pressure, the solenoid valve 12 is controlled to close, and the negative pressure enters the deformable sealed cavity 231 through the second channel 223. The deformable sealed cavity 231 contracts, and the air pressure in the groove 311 decreases to form a negative pressure, causing the one-way valve 32 to close. The generated negative pressure acts on the breast through the curved channel (formed by the first channel 222 and the first cavity 221), and the breast secretes milk under the action of the negative pressure.

[0065] While the negative pressure pump 11 stops generating negative pressure, the solenoid valve 12 is controlled to open, allowing outside air to flow through the solenoid valve 12 into the deformable sealed cavity 231, causing the contracted deformable sealed cavity 231 to return to its original state. The air pressure within the groove 311 is then restored, and the one-way valve 32 is no longer closed. Under the influence of gravity, milk flows from the curved channel into the groove 311, then from the groove 311 into the one-way valve 32, and then out through the one-way valve 32 into the milk collection container 33.

[0066] In the present application, the main assembly 1, the cover 21, the first cavity 221, the negative pressure chamber assembly 2, and the container assembly 3 can form an integrated breast pump. A first accommodation space capable of accommodating the negative pressure chamber assembly 2 is provided on the outside of the shell 10. The negative pressure chamber assembly 2 rests in the first accommodation space and is sealed to the main assembly via a first channel. The assembled shell 1 and the negative pressure chamber assembly 2 can form a second accommodation space at the bottom, in which the container assembly 3 rests. The container assembly 3 is sealed to the negative pressure chamber assembly 2 via a negative pressure chamber cover 314. The milk collection container 33 is detachably connected to the outer shell of the main assembly 1. A flat, standing surface is provided at the bottom of the milk collection container 33, which can form the base of the integrated breast pump.

[0067] The integrated breast pump structure allows for easy assembly and disassembly of the main unit assembly 1 and the negative pressure chamber assembly 2, making it convenient to use or clean the breast pump and also easy to carry around.

[0068] The breast pump provided by the present application can also be formed into a split breast pump. In addition, one or more components in the breast pump can be formed into a separate product for use.

[0069] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, commodity, or apparatus that includes the element.

[0070] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A breast pump (100), characterized in that: include: A first accommodating portion (211), used to at least partially accommodate a breast, wherein the first accommodating portion (211) is provided with a first opening (212); A suction diaphragm (23) for at least partially defining a deformable sealed cavity (231), wherein the deformable sealed cavity (231) is in fluid communication with the negative pressure pump (11) and is configured to be contractible under the action of the negative pressure pump (11); as well as The second accommodating portion (31) is used to at least partially accommodate the deformable sealing cavity (231), and is in fluid communication with the first accommodating portion (211) through the first opening (212). The second accommodating portion (31) and the first opening (212) are configured as follows: When the deformable sealing cavity (231) contracts, a negative pressure space is formed in the second accommodating portion (31), so as to transmit the negative pressure to the first accommodating portion (211) through the first opening (212).

2. The breast pump (100) according to claim 1, wherein: The first opening (212) and the first receiving portion (211) are further configured such that milk in the first receiving portion (211) is discharged into the second receiving portion (31) through the first opening (212).

3. The breast pump (100) according to claim 1 or 2, wherein: The negative pressure space is at least partially defined by the outer wall of the suction diaphragm (23) and the inner wall of the second receiving portion (31), and the suction diaphragm (23) is capable of preventing milk in the second receiving portion (31) from entering the negative pressure pump (11).

4. The breast pump (100) according to any one of claims 1 to 3, wherein: The second accommodating portion (31) comprises a retaining portion (22) and a negative pressure cabin cover (314), wherein the retaining portion (22) is capable of at least covering an opening of the negative pressure cabin cover (314) to form the second accommodating portion (31); and The suction diaphragm (23) is sleeved on the retaining portion (22) to form the deformable sealing cavity (231).

5. The breast pump (100) according to claim 4, wherein: The first opening (212) extends outside the first accommodating portion (211) to form a first channel (222), wherein the first channel (222) is at least partially accommodated in the second accommodating portion (31), and the second accommodating portion (31) is in fluid communication with the first accommodating portion (211) through the first channel (222), wherein preferably: The first passage (222) passes through the retaining portion (22) to be at least partially accommodated in the second accommodation portion (31); and / or The suction diaphragm (23) surrounds the outer wall of the first channel (222) to form the deformable sealing cavity (231), wherein the outer edge of the deformable sealing cavity (231) is sealedly connected to the retaining portion (22); and / or The retaining portion (22) is provided with a second channel (223), and the deformable sealing cavity (231) is in fluid communication with the negative pressure pump (11) via the second channel (223).

6. The breast pump (100) according to claim 4 or 5, wherein: The first accommodating portion (211), the retaining portion (22) and the suction diaphragm (23) are integrally formed; and / or The negative pressure cabin cover (314) is sealed and connected to the retaining portion (22), wherein preferably, the negative pressure cabin cover (314) is sealed and connected to the deformable sealing cavity (231) to further achieve a sealed connection with the retaining portion (22), and further preferably, the negative pressure cabin cover (314) is sealed and connected to the deformable sealing cavity (231) by extrusion.

7. The breast pump (100) according to any one of claims 1 to 6, wherein: The breast pump (100) further comprises a main unit assembly (1), wherein the main unit assembly (1) comprises a housing (10), wherein: The negative pressure pump (11) is arranged in the housing (10); and / or The main unit component (1) further comprises: a solenoid valve (12) arranged in the housing (10), wherein the solenoid valve (12), the negative pressure pump (11) and the second channel (223) are sealedly connected via a three-way pipe (13).

8. The breast pump (100) according to any one of claims 1 to 7, wherein: The negative pressure chamber assembly (2) further comprises a one-way valve (32), wherein the second accommodating portion (31) is provided with a groove (311) for accommodating the deformable sealing cavity (231), and a first through hole (312) connected to the one-way valve (32) is provided at the bottom of the groove (311). Preferably, the inner wall of the groove (311) is provided with a first recess, the outer wall of the deformable sealing cavity (231) is provided with a first extension portion (232) capable of being inserted into the first recess, and the first extension portion (232) and the first recess are in close contact, and further preferably, the one-way valve (32) is connected to the first through hole 312 by integral molding.

9. The breast pump (100) according to claim 8, wherein: The one-way valve (32) is flat, and comprises a supporting portion (321) and a suction portion (322). The supporting portion (321) is nested on the outside of the first through hole (312), and the suction portion (322) is connected to the supporting portion (321). Under the action of negative pressure, the suction portion (322) can be sucked onto the first through hole (312) to seal the first through hole (312).

10. The breast pump (100) according to any one of claims 1 to 9, wherein: The first accommodating portion (211) comprises a cover body (21) and a first cavity (221), wherein: The cover body (21) is used to at least partially accommodate the breast; The first cavity (221) is used to at least partially accommodate a nipple, the first cavity (221) comprises the first opening (212) and the second opening (213), the first cavity (221) is connected to the mask body (21) via the second opening (213), wherein preferably: The cover body (21) is configured as two layers, wherein the outer cover body is formed of hard rubber and the inner cover body is formed of soft rubber; and / or The center line of the second opening (213) is perpendicular to the center line of the first opening (212), and / or the second opening (213) and the first opening (212) are arranged at opposite ends of the first cavity (221).

11. The breast pump (100) according to any one of claims 1 to 10, wherein: The breast pump (100) further comprises a container assembly (3), wherein the container assembly (3) comprises a detachable milk collecting container (33). The milk collecting container (33) is provided with an opening, and the second accommodation portion (31) is at least partially accommodated in the milk collecting container (33) through the opening of the milk collecting container (33); Preferably, the inner wall of the opening of the milk collecting container (33) and at least a portion of the outer wall of the second accommodating portion (31) are sealed and connected, and an exhaust groove (313) is provided at the sealed connection to exhaust the air in the milk collecting container (33) so that the air pressure in the milk collecting container (33) is consistent with the external air pressure.

12. The breast pump (100) according to claim 11, wherein: The milk collecting container (33) is detachably fixed to the main unit component (1), wherein: The milk collecting container (33) is provided with a positioning groove, and the housing (10) of the main unit assembly (1) is provided with a retractable positioning bead (14), wherein the retractable positioning bead (14) is extended into the positioning groove or retracted from the positioning groove, so that the milk collecting container (33) is installed or removed; and / or A second recess is arranged on the outer wall of the opening of the milk collecting container (33), and a second extension is arranged on the housing (10) of the main unit assembly (1), wherein the second extension is inserted into or removed from the second recess, so that the milk collecting container (33) can be installed or removed.

13. The breast pump (100) according to any one of claims 1 to 12, wherein: The suction diaphragm (23) is made of elastic material.

14. The breast pump (100) according to any one of claims 1 to 13, wherein: The breast pump (100) is an integrated breast pump.

15. The breast pump (100) according to claim 14, wherein: A first accommodating space is provided outside the housing (10) of the breast pump (100), and the negative pressure chamber assembly (2) abuts against the first accommodating space; and The shell (10) and the negative pressure chamber assembly (2) abutting against the first accommodating space are formed at the bottom a second accommodating space, in which the milk collecting container (33) of the breast pump (100) abuts, Preferably, the bottom of the milk collecting container (33) is provided with a flat standing surface capable of standing, and the standing surface forms the base of the integrated breast pump.

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