Breast pump flow guide assembly and breast pump

Abstract

The breast pump flow guide assembly comprises a breast cover and a flow guide valve plate, a flow guide seat is arranged on the breast cover, a milk outlet used for discharging milk is formed in the flow guide seat, the upper end of the flow guide valve plate is connected to the flow guide seat, and the flow guide valve plate is used for opening and closing the milk outlet. The flow guide valve plate is elastic and can be attached to the lower portion of the milk outlet after being bent, and a connecting structure capable of keeping the flow guide valve plate in a bent state is arranged on the flow guide base; and the flow guide seat and the flow guide valve plate are integrally formed. The sealing structure has the advantages of simple structure, easiness in manufacturing and assembling and good sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of breast pumps, and in particular to a breast pump guide assembly and a breast pump. Background Art

[0002] A breast pump is a device widely used in breastfeeding, which is designed to provide nutrition to babies by extracting breast milk. The basic structure of a breast pump usually includes a suction part, a milk storage part and a control system. Among them, the one-way valve is a key component of the breast pump, which is mainly used to control the flow direction of breast milk to ensure that the breast milk will not flow back due to gravity or other factors during the extraction process.

[0003] In the traditional breast pump design, the one-way valve is generally a duckbill valve in the shape of a duckbill. This one-way valve is prone to deformation during use, has a short service life of only two to three months, and is relatively complex in structure, increasing the difficulty and cost of manufacturing.

[0004] In addition, the existing valve plate type one-way valve needs to be assembled separately, which is also troublesome to assemble. During use, the valve plate needs to be supported by the neck of the feeding bottle to close the milk outlet. However, such a structure is not tightly matched and has poor sealing performance.

[0005] Therefore, it is necessary to further improve and innovate the one-way valve in the prior art to overcome these shortcomings. The present invention is made based on this situation. Summary of the invention

[0006] The object of the present invention is to overcome the deficiencies of the prior art and to provide a breast pump guide assembly and a breast pump which are simple in structure, easy to manufacture and assemble, and have good sealing performance.

[0007] The present invention is achieved through the following technical solutions:

[0008] In order to solve the above technical problems, the present invention provides a breast pump diverter assembly, including a bra and a diverter valve plate, the bra is provided with a diverter seat, the diverter seat is provided with a milk outlet for discharging milk, the upper end of the diverter valve plate is connected to the diverter seat, the diverter valve plate is used to open and close the milk outlet, the diverter valve plate is elastic and can be attached to the lower part of the milk outlet after bending, the diverter seat is provided with a connecting structure that can keep the diverter valve plate in a bent state; the diverter seat and the diverter valve plate are integrally formed.

[0009] In order to further solve the technical problem to be solved by the present invention, the present invention provides a breast pump diversion assembly to solve the above technical problem, the connecting structure includes a limit plate arranged on the diversion seat, and the limit plate is provided with a limit hole, and the free end of the diversion valve plate passes through the limit hole.

[0010] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, a hollow hole is provided in the middle of the diversion valve plate, and a valve sheet is provided in the hollow hole which can close the milk outlet after the diversion valve plate is bent, and one side of the valve sheet is connected to the diversion valve plate.

[0011] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, the connection structure includes a limit column arranged on the diversion seat, and the diversion valve plate is provided with a through hole that can be engaged with the limit column.

[0012] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, the connecting structure includes a clamping plate arranged on the diversion seat, and two opposite elastic buckles are arranged at the lower end of the clamping plate, and the diversion valve plate can be clamped between the two elastic buckles after being bent.

[0013] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, the connection structure includes a first hook arranged on the diversion seat, and the diversion valve plate is provided with a second hook that can be mutually engaged with the first hook.

[0014] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, the connection structure includes a clamping hole arranged on the diversion seat, and the diversion valve plate is provided with a clamping column that can be inserted into the clamping hole and has an interference fit therewith.

[0015] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, the diversion valve plate is provided with an easy-bending section near its upper end, and the easy-bending section is provided with a notch or a bend.

[0016] In order to further solve the technical problem to be solved by the present invention, in a breast pump diversion assembly provided by the present invention, the lower end surface of the milk outlet is an inclined surface, and gradually tilts downward from the side close to the diversion valve plate to the side away from the diversion valve plate.

[0017] The present invention is also achieved through the following technical solutions:

[0018] A breast pump comprises the above-mentioned breast pump guide assembly and a shell, wherein the breast shield is provided with an elastic deformation portion, the shell covers the elastic deformation portion and a negative pressure cavity is formed therebetween, and the shell is provided with a negative pressure interface communicating with the negative pressure cavity.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The present invention achieves locking of the bent state of the guide valve plate of the breast pump through a connection structure, rather than using the bottleneck of the milk bottle to support the valve plate, so the sealing performance is better and the service life is longer. More importantly, during manufacturing, the design of the guide valve plate does not require bending in the initial stage. This feature greatly simplifies the manufacturing process, especially when using the injection molding process, it can effectively improve production efficiency. During assembly, the guide valve plate can be bent and fitted on the milk outlet through simple operations to achieve closure of the milk outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the first embodiment;

[0023] Figure 2 is a cross-sectional schematic diagram of embodiment 1;

[0024] Figure 3 is a cross-sectional schematic diagram of the guide valve plate of the first embodiment after being bent;

[0025] Figure 4 is a cross-sectional schematic diagram of embodiment 7;

[0026] Figure 5 is a cross-sectional schematic diagram of Embodiment 8;

[0027] Figure 6 is a schematic diagram of the three-dimensional structure of the second embodiment;

[0028] Figure 7 is a cross-sectional schematic diagram of embodiment 3;

[0029] Figure 8 is a schematic diagram of the three-dimensional structure of the fourth embodiment;

[0030] Fig. 9 is a cross-sectional schematic diagram of embodiment 5;

[0031] Fig.10 It is a cross-sectional schematic diagram of embodiment 6. DETAILED DESCRIPTION

[0032] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Implementation 1:

[0036] like Figures 1 to 10 A breast pump diversion assembly shown in the figure includes a bra 1 and a diversion valve plate 12, wherein the bra 1 is provided with a diversion seat 11, and the diversion seat 11 is provided with a milk outlet 111 for discharging milk, the upper end of the diversion valve plate 12 is connected to the diversion seat 11, and the diversion valve plate 12 is used to open and close the milk outlet 111, the diversion valve plate 12 is elastic and can be attached to the lower part of the milk outlet 111 after being bent, and the diversion seat 11 is provided with a connecting structure 2 that can keep the diversion valve plate 12 in a bent state.

[0037] The brassiere 1 is preferably trumpet-shaped and can closely fit the shape of the breast. A flow guide seat 11 is provided at the bottom of the brassiere 1, which provides a base for the valve body and effectively guides the milk to flow out.

[0038] The guide seat 11 is provided with a milk outlet 111 for discharging milk, which can be used to guide the milk. In order to ensure the smooth output of the milk and prevent the milk from flowing back, the guide seat 11 is also provided with a guide valve plate 12 for opening and closing the milk outlet 111. The guide valve plate 12 is elastic and bendable, and is usually made of plastic or silicone. The upper end of the guide valve plate 12 is fixed on the guide seat 11, and the lower end of the guide valve plate 12 can be bent. The guide valve plate 12 can be attached to the lower part of the milk outlet 111 after bending, effectively preventing the milk from flowing back from the milk outlet.

[0039] A connecting structure 2 is provided between the guide seat 11 and the guide valve plate 12. The connecting structure is designed to lock the bending state of the guide valve plate 12, further enhancing the airtightness of the valve plate and ensuring smooth milk discharge without milk leakage.

[0040] During manufacturing, the design of the guide valve plate 12 does not require bending in the initial stage, which greatly simplifies the manufacturing process, especially when using the injection molding process, it can effectively improve production efficiency (the guide valve plate 12 is vertical during manufacturing, which is easy to demold). During assembly, the guide valve plate 12 can be bent and attached to the milk outlet 111 through simple operations to achieve closing of the milk outlet 111.

[0041] Furthermore, the present invention locks the bent state of the guide valve plate 12 through the connection structure 2 instead of supporting the valve plate through the bottleneck of the milk bottle, so the sealing performance is better and the service life is longer.

[0042] In addition, compared with the duckbill type one-way valve, the guide valve plate 12 in the guide assembly of the present invention has a simple structure, a longer service life, and occupies a relatively small volume after bending, has a more compact structure, and can increase the milk storage space.

[0043] Furthermore, the bra 1, the guide seat 11 and the guide valve plate 12 are designed to be integrally formed, preferably integrally formed by silicone injection molding. This integrated design not only reduces the number of parts and reduces production costs, but also ensures the matching accuracy between the various parts and improves the stability and durability of the entire product. This innovative design makes the use of the breast pump more convenient and efficient.

[0044] The specific structure of the connection structure 2 is exemplified as follows:

[0045] like Figure 1-3 The embodiment 1 of the present invention is shown. In this embodiment, the connection structure 2 includes a limit plate 21 provided on the guide seat 11. The limit plate 21 is provided with a limit hole 211, and the free end of the guide valve plate 12 can pass through the limit hole 211 for connection. The design of this structure enables the guide valve plate 12 to be reliably locked in the bent state after bending, thereby achieving effective closure of the milk outlet 111 and preventing the backflow of milk.

[0046] In a specific implementation, the position of the limit plate 21 can be flexibly designed, and it can be located between the guide valve plate 12 and the milk outlet 111, or it can be arranged on both sides of the milk outlet 111 with the guide valve plate 12. Such a flexible design provides different usage modes and performance advantages.

[0047] Specifically, when the limiting plate 21 is located between the guide valve plate 12 and the milk outlet 111, the free end of the guide valve plate 12 passes through the limiting hole 211 and extends toward the milk outlet 111. Such a structural design allows the free end of the guide valve plate 12 to have a larger activity space, thereby improving the elasticity of the valve plate. During the milking process, such elasticity can better adapt to the dynamic changes of breast milk flow, ensuring that the milk outlet 111 can be opened and closed quickly and safely during milking.

[0048] On the other hand, when the limit plate 21 and the guide valve plate 12 are arranged on both sides of the milk outlet 111, the middle of the guide valve plate 12 will be tightly attached to the milk outlet 111. This design ensures that both ends of the guide valve plate 12 are supported, and can effectively avoid deformation or sagging of the end of the guide valve plate 12 due to gravity in the case of long-term use. This design greatly improves the stability and durability of the guide valve plate 12, thereby extending the service life of the breast pump.

[0049] Preferably, in order to facilitate bending, the guide valve plate 12 is provided with an easy-to-bend section near its upper end, and the easy-to-bend section is provided with a notch 12a (such as Figure 2 , Figure 3 Embodiment 1 shown) or bend 12b (such as Figure 4 Embodiment 7 shown).

[0050] Preferably, a chamfer is provided on a side of the limiting hole 211 close to the guide valve plate 12 to facilitate the insertion of the guide valve plate 12 and reduce wear.

[0051] Preferably, a gap (such as Figure 5 The eighth embodiment shown in the figure increases the elasticity of the guide valve plate 12, thereby facilitating the bending of the guide valve plate 12.

[0052] like Figure 6 What is shown is the second embodiment of the present invention, which is different from the above-mentioned first embodiment in that, in this embodiment, a hollow hole 124 is provided in the middle of the guide valve plate 12. The design of this hollow hole 124 not only enhances the area and efficiency of milk discharge, but also provides space for the arrangement of the valve plate 125. The valve plate 125 is arranged in the hollow hole 124, and its function is to effectively close the milk outlet 111 after the guide valve plate 12 is bent, thereby increasing the flexibility of the guide valve plate 12. Specifically, the presence of the hollow hole 124 and the valve plate 125 can achieve a larger deformation range, and the deformation of the guide valve plate 12 itself is combined with the deformation of the valve plate 125, so that the milk discharge speed is faster and more efficient. This design improves the fluency of the breast pump in use and makes the flow of breast milk smoother.

[0053] In terms of specific structure, one side of the valve plate 125 is connected to the guide valve plate 12 (preferably integrally connected), and this connection method ensures that the valve plate can move freely with the movement of the guide valve plate 12. When the guide valve plate 12 is bent, the valve plate 125 will close the milk outlet 111 to form a closed structure to prevent milk leakage and backflow. This design not only improves the sealing of the breast pump, but also enhances the smoothness of the milk pumping process, ensuring that each milk pumping can extract breast milk to the greatest extent.

[0054] Similarly, in this embodiment, the position of the limit plate 21 also maintains the characteristics of flexible design. The limit plate 21 can be located between the guide valve plate 12 and the milk outlet 111 to form a direct limiting effect; it can also be arranged on both sides of the milk outlet 111 with the guide valve plate 12. Regardless of which configuration is selected, the limit plate 21 can effectively restrict the bending state of the guide valve plate 12 and ensure the stability of the valve plate when closing the milk outlet 111.

[0055] like Figure 7 The third embodiment of the present invention is shown, which is different from the first embodiment described above in that, in this embodiment, the connection structure 2 includes a limit column 22 provided on the guide seat 11. In addition, the guide valve plate 12 is also provided with a through hole 121 that can be engaged with the limit column 22. The limit column 22 and the through hole 121 are engaged with each other, thereby locking the bending state of the guide valve plate 12.

[0056] In order to further strengthen the connection between the limiting column 22 and the through hole 121, a mushroom head structure is designed on the top of the limiting column 22. The shape of the mushroom head enables the limiting column 22 to have a better clamping effect in the through hole 121, ensuring that it will not loosen or fall off during use.

[0057] Similarly, in this embodiment, the position of the limit post 22 also maintains the characteristics of flexible design, that is, the limit post 22 can be flexibly arranged between the guide valve plate 12 and the milk outlet 111, and can also be arranged on both sides of the milk outlet 111 together with the guide valve plate 12.

[0058] Preferably, both sides of the through hole 121 are chamfered to facilitate smooth insertion of the limiting column 22 or the mushroom head.

[0059] like Figure 8 The fourth embodiment of the present invention is shown, which is different from the first embodiment described above in that, in this embodiment, the connection structure 2 includes a clamping plate 23 provided on the guide seat 11. The lower end of the clamping plate 23 is designed with two opposite elastic buckles 231. This design enables the guide valve plate 12 to be easily clamped between the two elastic buckles 231 after bending, thereby achieving a stable connection. The provision of the elastic buckle 231 not only enhances the bonding force between the guide valve plate 12 and the clamping plate 23, but also ensures that the guide valve plate 12 will not accidentally fall off during use. Preferably, the corresponding position of the guide valve plate 12 is provided with a notch that can cooperate with the elastic buckle 231.

[0060] In this embodiment, the position of the clamping plate 23 maintains the feature of flexible design. Specifically, the clamping plate 23 can be flexibly arranged between the guide valve plate 12 and the milk outlet 111, or can be arranged on both sides of the milk outlet 111 with the guide valve plate 12.

[0061] like Fig. 9The fifth embodiment of the present invention is shown, which is different from the above-mentioned first embodiment in that, in this embodiment, the connecting structure 2 includes a first hook 24 arranged on the guide seat 11, and the guide valve plate 12 is provided with a second hook 122 that can be mutually engaged with the first hook 24.

[0062] Similarly, in this embodiment, the position of the first hook 24 also maintains the feature of flexible design, that is, the first hook 24 can be flexibly arranged between the guide valve plate 12 and the milk outlet 111, and can also be arranged on both sides of the milk outlet 111 together with the guide valve plate 12.

[0063] like Figure 8 What is shown is the sixth embodiment of the present invention, which is different from the above-mentioned first embodiment in that, in this embodiment, the connecting structure 2 includes a clamping hole 25 provided on the guide seat 11, and the guide valve plate 12 is provided with a clamping column 123 that can be inserted into the clamping hole 25 and has an interference fit therewith.

[0064] Similarly, in this embodiment, the position of the clamping hole 25 also maintains the feature of flexible design, that is, the clamping hole 25 can be flexibly arranged between the guide valve plate 12 and the milk outlet 111, and can also be arranged on both sides of the milk outlet 111 together with the guide valve plate 12.

[0065] Other optimized structures are as follows:

[0066] Furthermore, the lower end surface of the milk outlet 111 is designed as an inclined surface 1111, and its inclination direction is gradually inclined downward from the side close to the guide valve plate 12 to the side away from the guide valve plate 12. The purpose of this inclined design is to optimize the contact effect between the guide valve plate 12 and the milk outlet 111, ensuring that the two can fit more closely when combined.

[0067] Specifically, when the guide valve plate 12 is bent, its shape better matches the inclined surface 1111 of the milk outlet 111, forming a more closed connection. This tight fit can not only effectively prevent milk leakage, but also improve the fluid efficiency during the milk suction process, ensuring that the milk can be discharged smoothly and quickly through the milk outlet 111. This design physically reduces the resistance caused by the loose joints, thereby improving the flow performance of the milk.

[0068] In addition, the arrangement of the inclined surface 1111 can also reduce the wear of the guide valve plate 12 during the opening and closing process to a certain extent. Since the angle between the two is more closely matched, the reduction of friction can extend the service life of the guide valve plate 12.

[0069] The present invention also discloses a breast pump, comprising the above-mentioned breast pump flow guide assembly, a shell 3, and the bra 1 elastic deformation part 13. The elastic deformation part 13 is preferably pleated, and the pleated structure of the elastic deformation part 13 not only increases its deformation ability, but also can generate greater negative pressure.

[0070] It is worth noting that in this embodiment, the elastic deformation part 13 can be arranged at the rear end of the bra 1 or on the side of the bra 1. When the elastic deformation part 13 is arranged on the side of the bra 1, the area where the elastic deformation part 13 can be arranged is larger, and the redundant suction bowl structure at the rear end of the traditional bra 1 is eliminated, so that the breast pump structure is more concise and efficient, and the volume is smaller.

[0071] A shell 3 (usually hard) is provided outside the elastic deformation part 13. That is, the shell 3 covers the elastic deformation part 13, and a cavity 31 is formed between the two. The function of the cavity 31 is to form a negative pressure by evacuating air, attracting the elastic deformation part 13 to deform, so that a negative pressure is formed in the inner cavity of the bra 1 to achieve the effect of sucking milk.

[0072] To achieve this purpose, a negative pressure interface 32 is provided on the housing 3. This interface can be connected to an external negative pressure device (such as an air pump), and the user can control the pressure change in the housing 3 by adjusting the intensity of the negative pressure, thereby achieving a better milk suction effect.

[0073] Furthermore, the guide seat 11 is designed with a bottle interface 14 surrounding the milk outlet 111. The function of the bottle interface 14 is to provide a stable connection position for connecting the bottle, ensuring that the milk can flow smoothly into the bottle during the milk sucking process. Usually, the bottle interface 14 adopts a threaded interface design, which not only provides a good sealing effect, but also makes the installation and removal of the bottle easier. The user only needs to gently rotate to complete the connection.

[0074] The bra 1 is usually called a three-way connection, and includes three openings: a milk outlet 111, a negative pressure interface 32, and a breast fitting opening.

[0075] It is worth mentioning that the housing 3 preferably adopts an integrally formed design. This integrally formed structure not only improves the overall strength and stability of the housing 3, but also reduces the manufacturing cost.

[0076] The present invention achieves locking of the bent state of the guide valve plate of the breast pump through a connection structure, rather than using the bottleneck of the milk bottle to support the valve plate, so the sealing performance is better and the service life is longer. More importantly, during manufacturing, the design of the guide valve plate does not require bending in the initial stage. This feature greatly simplifies the manufacturing process, especially when using the injection molding process, it can effectively improve production efficiency. During assembly, the guide valve plate can be bent and fitted on the milk outlet through simple operations to achieve closure of the milk outlet.

[0077] The bra, the guide seat and the guide valve plate are preferably designed to be integrally formed. This integrated design not only reduces the number of parts and reduces production costs, but also ensures the matching accuracy between the various parts and improves the stability and durability of the entire product. This innovative design makes the use of the breast pump more convenient and efficient.

[0078] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A breast pump guide assembly, characterized in that: The invention comprises a bra (1) and a guide valve plate (12); the bra (1) is provided with a guide seat (11); the guide seat (11) is provided with a milk outlet (111) for discharging milk; the upper end of the guide valve plate (12) is connected to the guide seat (11); the guide valve plate (12) is used to open and close the milk outlet (111); the guide valve plate (12) is elastic and can be attached to the lower part of the milk outlet (111) after being bent; the guide seat (11) is provided with a connecting structure (2) capable of keeping the guide valve plate (12) in a bent state; the guide seat (11) and the guide valve plate (12) are integrally formed.

2. A breast pump guide assembly according to claim 1, characterized in that: The connection structure (2) comprises a limiting plate (21) arranged on the guide seat (11), and the limiting plate (21) is provided with a limiting hole (211), and the free end of the guide valve plate (12) passes through the limiting hole (211).

3. A breast pump guide assembly according to claim 2, characterized in that: A hollow hole (124) is provided in the middle of the guide valve plate (12), and a valve plate (125) capable of closing the milk outlet (111) after the guide valve plate (12) is bent is provided in the hollow hole (124), and one side of the valve plate (125) is connected to the guide valve plate (12).

4. A breast pump guide assembly according to claim 1, characterized in that: The connection structure (2) comprises a limiting column (22) arranged on the flow guide seat (11), and the flow guide valve plate (12) is provided with a through hole (121) capable of engaging with the limiting column (22).

5. A breast pump guide assembly according to claim 1, characterized in that: The connection structure (2) comprises a clamping plate (23) arranged on the guide seat (11), the lower end of the clamping plate (23) being provided with two opposite elastic clamping buckles (231), and the guide valve plate (12) can be clamped between the two elastic clamping buckles (231) after being bent.

6. A breast pump guide assembly according to claim 1, characterized in that: The connection structure (2) comprises a first hook (24) provided on the flow guide seat (11), and the flow guide valve plate (12) is provided with a second hook (122) capable of being mutually engaged with the first hook (24).

7. A breast pump guide assembly according to claim 1, characterized in that: The connection structure (2) comprises a clamping hole (25) provided on the flow guide seat (11), and the flow guide valve plate (12) is provided with a clamping column (123) which can be inserted into the clamping hole (25) and has an interference fit therewith.

8. A breast pump guide assembly according to any one of claims 1 to 7, characterized in that: The guide valve plate (12) is provided with an easy-to-bend section near its upper end, and the easy-to-bend section is provided with a notch (12a) or a bend (12b).

9. A breast pump guide assembly according to any one of claims 1 to 7, characterized in that: The lower end surface of the milk outlet (111) is an inclined surface (1111), and gradually inclines downward from a side close to the guide valve plate (12) to a side away from the guide valve plate (12).

10. A breast pump, characterized in that: The invention comprises a breast pump guide assembly according to any one of claims 1 to 9, and further comprises a shell (3), wherein the breast shield (1) is provided with an elastic deformation portion (13), the shell (3) covers the elastic deformation portion (13) and a negative pressure cavity (31) is formed therebetween, and the shell (3) is provided with a negative pressure interface (32) connected to the negative pressure cavity (31).

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