Wearable breast pump

Abstract

The utility model relates to the technical field of breast pumps, in particular to a wearable breast pump which comprises a flexible breast suction cover and a negative pressure cover, a negative pressure cavity is formed between the negative pressure cover and the flexible breast suction cover, the flexible breast suction cover comprises a breast cover and a breast suction channel integrally connected with the breast cover, the breast suction channel is located in the negative pressure cavity, and the negative pressure cavity is communicated with the negative pressure cavity. The left side and the right side of the breast pumping channel are provided with deformation structures capable of guiding the breast pumping channel to deform, the breast pumping channel and the deformation structures are made of elastic materials, and a certain distance is reserved between the inner side wall of the negative pressure cavity and the deformation structures so that a deformation space capable of allowing the deformation structures and the breast pumping channel to elastically deform can be formed. The deformation structures are arranged on the two sides of the milk sucking channel, the deformation spaces on the two sides of the milk sucking channel are fully utilized, the milk storage space is increased under the condition that the size of the whole machine is not increased, meanwhile, the milk sucking function is achieved through the deformation structures of the milk sucking channel, extra parts such as a suction bowl are saved, and the milk sucking function is achieved only through the elastic characteristic of materials.

Description

Technical Field

[0001] This utility model relates to the field of breast pump technology, and in particular to a wearable breast pump. Background Technology

[0002] Wearable breast pumps, as an innovative breastfeeding aid, aim to provide mothers with a more convenient and comfortable breastfeeding experience. With the popularization of breastfeeding concepts and the development of related technologies, wearable breast pumps have gradually gained popularity among young mothers. The basic principle of these devices is to extract breast milk from the mammary glands through negative pressure suction, so that mothers can easily express milk in their daily lives, solving the problems of cumbersome operation and strong restraint of traditional breast pumps.

[0003] Existing wearable breast pumps typically place the suction bowl at the top or back of the breast pump's suction channel, which does not fully utilize the space in the milk storage container. For example, the breast pump described in patent CN202410375322.8 has the suction bowl placed at the back of the breast pump's suction channel, occupying too much space inside the breast pump. Furthermore, the space on both sides of the breast pump's suction channel is not fully utilized, resulting in an underutilized milk storage container with a small storage space. Moreover, due to the small storage space, when the milk reaches the level of the one-way valve, the milk does not actually continue to flow, thus affecting the pumping efficiency and the pumping experience.

[0004] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0005] The aforementioned technical problem addresses the issue that existing wearable breast pumps do not fully utilize the space on both sides of the milk suction channel, resulting in a small milk storage space and limitations on the overall design, size, and shape of the breast pump.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A wearable breast pump includes a flexible breast shield and a negative pressure shield sealed to the flexible breast shield. A negative pressure cavity is formed between the negative pressure shield and the flexible breast shield. The flexible breast shield includes a breast shield and a breast suction channel integrally connected to the breast shield. The breast suction channel is located within the negative pressure cavity. Deformation structures capable of guiding the deformation of the breast suction channel are provided on the left and right sides of the breast suction channel. Both the breast suction channel and the deformation structures are made of elastic material. The breast shield, breast suction channel, and deformation structures are integrally molded. There is a certain distance between the inner wall of the negative pressure shield and the deformation structure to form a deformation space that allows the deformation structure and the breast suction channel to elastically deform. When the negative pressure shield creates negative pressure in the negative pressure cavity under the action of a negative pressure source, the deformation structure can deform and expand.

[0008] As described above, the wearable breast pump has multiple deformable structures, and these multiple deformable structures are symmetrically distributed on the outer peripheral surface of the breast pumping channel.

[0009] As described above, the wearable breast pump has a deformable structure that is strip-shaped, wavy, or serrated, and is positioned along the opening of the bra toward the end of the breast pumping channel.

[0010] As described above, the cross-sectional shape of the negative pressure shield of the wearable breast pump is elliptical, or axially symmetrical polygonal along the center line of the negative pressure shield.

[0011] As described above, the wearable breast pump has a sealing component between the negative pressure cover and the breast pumping channel. The sealing component includes a sealing groove on the outside of the breast pumping channel and a sealing buckle on the negative pressure cover. The sealing buckle engages with the sealing groove.

[0012] As described above, the wearable breast pump has a reinforcing rib at the top of the milk pumping channel.

[0013] As described above, the wearable breast pump has a milk outlet channel at the bottom of the milk pumping channel, and a one-way valve assembly is provided on the output end of the milk outlet channel. The one-way valve assembly is integrally formed with the milk outlet channel or can be detachably connected.

[0014] As described above, in the wearable breast pump, the one-way valve assembly includes a valve seat and a plate-shaped deformation plate. The valve seat is located at the bottom of the milk expression channel and adjacent to the milk outlet channel. The plate-shaped deformation plate includes a fixed section and a deformation section. The deformation section is mounted on the valve seat and is located below the output end of the milk outlet channel. The deformation section can elastically deform in a direction closer to or farther from the output end of the milk outlet channel to close or open the output end of the milk outlet channel.

[0015] As described above, the wearable breast pump includes a fixed insert plate with a insertion hole on the fixed insert plate and a insertion slot on the deformable section corresponding to the insertion hole.

[0016] As described above, the wearable breast pump has a baffle plate inside the negative pressure cover, and the inner wall of the baffle plate and the inner wall of the negative pressure cover enclose the negative pressure cavity.

[0017] The beneficial effects of this utility model are:

[0018] This utility model relates to the field of breast pump technology, specifically a wearable breast pump. It includes a flexible breast shield and a negative pressure shield, with a negative pressure cavity formed between the negative pressure shield and the flexible breast shield. The flexible breast shield includes a breast cover and a breast pumping channel integrally connected to the breast cover. The breast pumping channel is located within the negative pressure cavity. Deformation structures capable of guiding the deformation of the breast pumping channel are provided on both the left and right sides of the breast pumping channel. Both the breast pumping channel and the deformation structures are made of elastic material. A certain distance exists between the inner wall of the negative pressure cavity and the deformation structures to form a deformation space that allows for elastic deformation of the deformation structures and the breast pumping channel. By providing deformation structures on both sides of the breast pumping channel, the deformation space on both sides of the breast pumping channel can be fully utilized, increasing the milk storage space without increasing the overall size of the device. Simultaneously, the breast pumping function is achieved using the deformation structure of the breast pumping channel, saving on additional components such as suction bowls. The breast pumping function is achieved solely through the elastic properties of the material, simplifying the overall structure and making the overall design of the breast pump more compact and lightweight.

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is one of the structural schematic diagrams of the wearable breast pump according to Embodiment 1 of this utility model;

[0021] Figure 2 This is the second structural schematic diagram of the wearable breast pump according to Embodiment 1 of this utility model;

[0022] Figure 3 This is a top view schematic diagram of the wearable breast pump according to Embodiment 1 of this utility model;

[0023] Figure 4 for Figure 3 Cross-sectional view along line AA;

[0024] Figure 5 for Figure 3 Cross-sectional view along line BB;

[0025] Figure 6 for Figure 3 Cross-sectional view along line CC;

[0026] Figure 7 This is one of the exploded views of the wearable breast pump according to Embodiment 1 of this utility model;

[0027] Figure 8 This is the second exploded view of the wearable breast pump of Embodiment 1 of this utility model;

[0028] Figure 9 This is an exploded view of the flexible breast shield of this utility model (the plate-shaped deformable plate is in its initial unassembled state).

[0029] Figure 10 This is a schematic diagram of the wearable breast pump according to Embodiment 2 of this utility model;

[0030] Figure 11 This is an exploded view of the wearable breast pump according to Embodiment 2 of this utility model;

[0031] Figure 12 This is a top view schematic diagram of the wearable breast pump of Embodiment 2 of this utility model;

[0032] Figure 13 for Figure 12 Schematic diagram of cross section along line DD. Detailed Implementation

[0033] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Example 1:

[0037] like Figures 1 to 9As shown, the wearable breast pump of this embodiment includes a flexible breast shield 1 and a negative pressure shield 2 sealed to the flexible breast shield 1. A negative pressure cavity 3 is formed between the negative pressure shield 2 and the flexible breast shield 1. The flexible breast shield 1 includes a breast shield 11 and a breast suction channel 12 integrally connected to the breast shield 11. The breast suction channel 12 is located in the negative pressure cavity 3. Deformation structures 4 that can guide the deformation of the breast suction channel 12 are provided on the left and right sides of the breast suction channel 12. The breast suction channel 12 and the deformation structure 4 are both made of elastic material. The breast shield 11, the breast suction channel 12, and the deformation structure 4 are integrally formed. There is a certain distance between the inner wall of the negative pressure shield 2 and the deformation structure 4 to form a deformation space 31 that allows the deformation structure 4 and the breast suction channel 12 to elastically deform.

[0038] When the negative pressure cover 2 creates negative pressure in the negative pressure chamber 3 under the action of the negative pressure source, the deformation structure 4 can deform and expand. The deformation structures 4 on the left and right sides of the milk suction channel 12 move away from each other, causing the left and right sidewalls of the milk suction channel 12 to expand outward. When the air pressure in the negative pressure chamber 3 returns to atmospheric pressure, the deformation structure 4 can elastically restore its natural shape under normal pressure, and the deformation structures 4 on the left and right sides of the milk suction channel 12 move closer to each other, thereby causing the sidewalls of the milk suction channel 12 to retract. The deformation structures 4 move to both sides under negative pressure. Through the expansion and contraction of the deformation structures 4, this movement causes the sidewalls of the milk suction channel 12 to expand outward or return inward, simulating the natural sucking action of an infant, so as to achieve the purpose of milk suction and improve the efficiency and comfort of the breast pump.

[0039] Specifically, there is a deformation space between the inner wall of the negative pressure chamber 3 and the deformation structure 4, which allows the deformation structure 4 and the milk suction channel 12 to have enough space to deform without being restricted, thereby achieving smoother expansion and contraction.

[0040] Specifically, by setting deformation structures on both sides of the breast pump channel 12, the deformation space on both sides of the breast pump channel 12 and the deformation structure can be fully utilized to realize the milk pumping function. The milk storage space is increased without increasing the overall size of the breast pump. At the same time, the milk pumping function is realized by utilizing the deformation structure of the breast pump channel, saving additional parts such as the suction bowl. There is no need for complex mechanical parts. The function is realized by relying solely on the elastic properties of the material, which simplifies the overall structure and can make more effective use of the space inside the breast shield. The overall design is more compact and lightweight, reducing the overall size of the breast pump and improving its concealment and comfort.

[0041] Furthermore, the wearable breast pump in this embodiment has a simple structure, fewer parts, and is easy to disassemble, clean, and maintain, meeting users' requirements for hygiene and convenience.

[0042] Furthermore, by adjusting the negative pressure source, the degree of deformation of the deformable structure 4 and the breast suction channel 12 can be controlled, thereby achieving precise adjustment of the suction force to meet the needs of different users.

[0043] Furthermore, in this embodiment, the bra 11, the breast suction channel 12, and the deformation structure 4 are integrally molded.

[0044] Specifically, one-piece molding can eliminate the connection points between the components, thereby improving the strength and stability of the flexible breast shield 1 and reducing damage to the flexible breast shield 1 caused by fatigue and wear at the connection points.

[0045] Specifically, the flexible breast shield 1 is manufactured through a one-piece molding process, which simplifies the manufacturing process, reduces assembly steps, and lowers production costs and time.

[0046] The one-piece design of the flexible breast shield 1 ensures a tighter seal between the parts, reduces the risk of air leakage, improves overall efficiency, and ensures the normal operation of the breast pumping channel 12.

[0047] like Figures 1 to 9 As shown, this embodiment has multiple deformable structures 4, and these multiple deformable structures 4 are symmetrically distributed on the outer peripheral surface of the milk suction channel 12. This allows the milk suction channel 12 to expand and contract uniformly on its outer peripheral surface.

[0048] Specifically, the symmetrical distribution of the deformation structure 4 ensures that the force distribution is more uniform when the milk suction channel 12 expands and retracts. This symmetry can reduce local excessive deformation caused by uneven force and extend the service life of the equipment.

[0049] Furthermore, through the collaboration of multiple deformable structures 4, the milk suction channel 12 can expand and retract evenly on the outer peripheral surface. This design makes the milk suction process more efficient, improves the suction effect, reduces pressure on the mammary glands, and provides a more comfortable experience.

[0050] Furthermore, uniform expansion and contraction can reduce friction and impact between components, thereby reducing noise and vibration and improving the overall user experience.

[0051] like Figures 1 to 9 As shown, each of the deformable structures 4 described in this embodiment is strip-shaped, and its two ends are arranged along the opening of the bra 11 toward the end of the breast suction channel 12.

[0052] Specifically, the strip-shaped deformation structure 4 can provide a larger contact surface and better support, ensuring that it can more effectively adapt to the shape of the nipple during the milk suction process. This design can help to evenly distribute the pressure applied to the milk suction channel 12, making the suction of the milk suction channel 12 more uniform.

[0053] Specifically, the strip-shaped deformation structure 4 is arranged along the opening of the bra 11 toward the end of the breast suction channel 12, which allows the deformation structure 4 to be better positioned on the breast suction channel 12, ensuring that it can expand evenly when deformed, thereby causing the breast suction channel 12 to deform.

[0054] Specifically, the deformable structure 4 has a hollow strip shape, which can ensure the deformation strength of the deformable structure 4 while ensuring that the deformable structure 4 can evenly distribute the pressure applied to the milk suction channel 12. The deformable structure is relatively simple, easy to manufacture, and helps to reduce production costs.

[0055] Furthermore, multiple deformation structures are set at 4 intervals.

[0056] In other embodiments, the cross-section of the structure formed by the plurality of deformable structures 4 is designed to be wavy, so that the breast suction channel 12 can better conform to the natural shape of the nipple, reduce pressure and discomfort, and improve the user experience. Preferably, the deformable structures 4 with the cross-section designed to be wavy are arranged at intervals along the opening of the bra 11 toward the end of the breast suction channel 12, and the height of the plurality of deformable structures 4 gradually decreases along the opening of the bra 11 toward the end of the breast suction channel 12 to form the effect of the cross-section design being wavy.

[0057] In other embodiments, the cross-section of the deformable structure 4 is designed as a sawtooth shape, which can provide more contact points between the breast suction channel 12 and the nipple, increase the friction between the two, reduce slippage, and effectively improve the sealing and stability of the connection between the flexible breast shield and the breast. Preferably, the deformable structure 4 with the cross-section designed as a sawtooth shape is such that the two ends of each deformable structure 4 are spaced apart along the opening of the breast shield 11 toward the end of the breast suction channel 12.

[0058] There are no restrictions on the cross-sectional design of the deformable structure 4 here; a suitable design can be selected according to actual needs.

[0059] like Figures 1 to 9As shown, the cross-sectional shape of the negative pressure cover 2 in this embodiment is elliptical, or axially symmetrical polygonal (such as axially symmetrical rectangle, pentagon, hexagon, etc.) along the center line of the negative pressure cover 2. This design ensures that the deformation spaces 31 on the left and right sides of the breast pumping channel 12 have similar or identical volumes, ensuring that the deformation structures 4 on both sides of the breast pumping channel 12 can deform uniformly under suction. This uniformity helps maintain balance during the breast pumping process, reduces local pressure on the mammary glands, reduces user discomfort caused by uneven deformation of the breast pumping channel 12, and reduces the risk of damage that may occur during the breast pumping process, providing a safer user experience.

[0060] Furthermore, the elliptical or polygonal design can effectively distribute the suction force inside the negative pressure chamber 3, avoiding localized excessive adsorption or uneven pressure within the negative pressure chamber 3, thereby improving the overall milk pumping efficiency.

[0061] Furthermore, the symmetrical cross-sectional shape of the negative pressure cover 2 helps maintain the stability of the equipment during use, reduces vibration or noise caused by uneven deformation, and thus improves the overall user experience.

[0062] like Figures 1 to 9 As shown, a sealing component is provided between the negative pressure cover 2 and the breast pumping channel 12 in this embodiment. The sealing component includes a sealing groove 121 located on the outside of the breast pumping channel 12 and a sealing snap 21 located on the negative pressure cover 2. The sealing snap 21 engages with the sealing groove 121. The design of the sealing groove 121 and the sealing snap 21 can effectively form a seal, prevent negative pressure leakage inside the negative pressure cover 2, maximize the suction of the breast pumping channel 12, thereby ensuring stable and effective suction during the breast pumping process, improving the efficiency of breast pumping, and enhancing the usage effect.

[0063] Preferably, the snap-fit ​​design of the sealing slot 21 and the sealing groove 121 makes the connection between the negative pressure cover 2 and the breast pumping channel 12 simpler and more reliable, and makes it more convenient for users to install and disassemble.

[0064] Preferably, in other embodiments, the sealing member may also be a sealing ring or sealing gasket, and a suitable design can be selected according to actual needs.

[0065] like Figures 1 to 9 As shown, the top of the breast pumping channel 12 in this embodiment is provided with a reinforcing rib 122. Specifically, the setting of the reinforcing rib 122 can significantly improve the overall structural strength of the breast pumping channel 12, enabling it to withstand greater pressure and load during use and reducing the risk of damage.

[0066] Furthermore, by adding reinforcing ribs to the top of the breast pumping channel 12, the stability of the breast pumping channel deformation can be effectively improved, ensuring that the breast pumping channel can deform normally to the left and right or contract and return to its original position under negative pressure, thereby maintaining the stability of the breast pumping effect.

[0067] Furthermore, the reinforcing ribs can help disperse the pressure applied to the breast pumping channel 12, reduce local stress concentration, and extend the service life of the breast pumping channel 12.

[0068] like Figures 1 to 9 As shown, the bottom of the milk suction channel 12 in this embodiment is provided with a milk outlet channel 123. A one-way valve assembly is provided on the output end of the milk outlet channel 123. The one-way valve assembly can effectively prevent the milk from flowing back during the milk suction process, ensure the one-way flow of the milk when it is discharged, improve the safety and hygiene of use, and effectively control the flow rate of the milk, avoiding the phenomenon of milk overflow or uneven flow rate during the milk suction process, thereby improving the milk suction efficiency.

[0069] Preferably, the one-way valve assembly is integrally formed with the milk outlet channel 123 or is detachably connected, and a suitable design can be selected according to actual needs.

[0070] like Figures 1 to 9 As shown, the one-way valve assembly of this embodiment includes a valve seat 125 and a plate-shaped deformation plate 124. The valve seat 125 is located at the bottom of the milk suction channel 12 and is adjacent to the milk outlet channel 123. The plate-shaped deformation plate 124 includes a fixed section 1241 and a deformation section 1242. The deformation section 1242 is mounted on the valve seat 125 and is located below the output end of the milk outlet channel 123. The deformation section 1242 can elastically deform towards or away from the output end of the milk outlet channel 123 to close or open the output end of the milk outlet channel 123. Specifically, when the side wall of the milk suction channel 12 expands outward to the left and right, the negative pressure in the milk suction channel 12 keeps the deformation section 1242 on the fixed section 1241 in a closed state against the output end of the milk outlet channel 123.

[0071] When the air pressure inside the milk suction channel 12 returns to atmospheric pressure, and the elastic deformation and contraction of the milk suction channel 12 returns to its initial state, under the weight of the milk and the air pressure of the milk suction channel 12, the deformation section 1242 on the deformation section 1242 elastically deforms in the direction away from the output end of the milk outlet channel 123, so as to open the output end of the milk outlet channel 123 and allow the milk to be discharged from the output end of the milk outlet channel 123.

[0072] Preferably, by adding a mounting valve seat 125 at the bottom of the milk suction channel 12 and mounting the deformable section 1242 on the mounting valve seat 125, a stable fixing point can be provided for the deformable section 1242, and the deformable section 1242 can be elastically deformed in the direction away from or close to the output end of the milk discharge channel 123.

[0073] Preferably, in this embodiment, the assembly valve seat 125 includes a fixed insert plate, the fixed insert plate is provided with an insertion hole 1251, and the deformable section 1242 is provided with an insertion slot 1243 corresponding to the insertion hole 1251. The deformable section 1242 is inserted into the fixed insert plate through the cooperation of the insertion hole 1251 and the insertion slot 1243, so as to realize the positioning and assembly of the deformable section 1242 of the plate-shaped deformable plate 124 below the output end of the milk outlet channel 123.

[0074] Preferably, the plate-shaped deformable plate 124 and the breast milk channel 12 are either integrally molded or detachably connected, and the appropriate design can be selected according to actual needs.

[0075] Preferably, in this embodiment, the plate-shaped deformable plate 124 and the breast pumping channel 12 are integrally molded. One end of the fixed section 1241 is connected to the breast pumping channel 12, and the other end is connected to the deformable section 1242, as shown below. Figure 9 As shown, in the initial unassembled state, the plate-shaped deformation plate 124 is vertically downward at the bottom of the milk suction channel 12. During assembly, the deformation section 1242 needs to be bent on the fixed section 1241 so that the free end of the deformation section 1242 is aligned with the insertion hole 1251. Then, the deformation section 1242 is passed through the insertion hole 1251 and the insertion locking position 1243 is locked with the insertion hole 1251 to achieve the positioning and assembly of the deformation section 1242 on the fixed plate. This also ensures that the deformation section 1242 will not shift its position during deformation, and ensures that the deformation section 1242 can accurately close or open the output end of the milk discharge channel 123.

[0076] Preferably, there is a certain distance between the fixed segment 124 and the fixed insert plate to ensure that there is sufficient deformation space between the fixed segment 124 and the deformable segment 1242, and to ensure that the deformable segment 1242 bends on the fixed segment 1241, so as to facilitate the assembly of the deformable segment 1242 onto the fixed insert plate.

[0077] Preferably, the flexible breast shield 1 further includes a milk storage shell 13, and the output end of the milk outlet channel 123 and the one-way valve assembly are located inside the milk storage shell 13. When the output end of the milk outlet channel 123 is opened under the action of the one-way valve assembly, the milk can drip into the milk storage shell for collection.

[0078] The design of the one-way valve assembly as a plate-shaped deformation plate 124 can reduce the volume of the one-way valve assembly, thereby reducing the space occupied by the one-way valve assembly in the milk storage shell 13 and expanding the milk storage space of the milk storage shell 13. Moreover, the one-way valve assembly with the plate-shaped deformation plate 124 as the main component has the advantages of simple structure, small size and convenient operation.

[0079] Preferably, in other embodiments, the one-way valve assembly may also adopt a structure such as a duckbill valve one-way valve, and a suitable design can be selected according to actual needs.

[0080] Preferably, the milk storage shell 13 and the negative pressure cover 2 are integrally formed or detachably connected structures, and a suitable design can be selected according to actual needs.

[0081] Example 2:

[0082] The difference between this embodiment and Embodiment 1 is that, as Figures 9 to 13 As shown, the negative pressure cover 2 in this embodiment is also provided with a baffle plate 22. The inner wall of the baffle plate 22 and the inner walls of the left and right sides of the negative pressure cover 2 form the negative pressure cavity 3. The inner wall of the baffle plate 22 is close to the end of the breast pumping channel 12, which can effectively limit the volume of the negative pressure cavity 3 and avoid the problem of insufficient suction caused by the excessive volume of the negative pressure cavity. This ensures that the negative pressure can be effective continuously during use, which helps to maintain the suction of the breast pumping channel 12 and ensures that the user can obtain continuous and stable suction throughout the breast pumping process.

[0083] Furthermore, the design of the barrier plate 22 makes reasonable use of the internal space of the negative pressure cover 2, making the design of the flexible breast shield more compact and reducing unnecessary volume waste.

[0084] Preferably, the barrier plate increases the structural stability of the negative pressure shroud, resists the influence of external pressure, and ensures the continuity of the internal negative pressure environment.

[0085] like Figures 9 to 13 As shown, the negative pressure cover 2 in this embodiment is also provided with an assembly groove 23. The outer wall of the barrier plate 22 and the inner walls of the left and right sides of the negative pressure cover 2 form the assembly groove 23. The negative pressure cover 2 is provided with an opening communicating with the assembly groove 23. A decorative back cover 5 is installed on the assembly groove 23. With this design, the decorative back cover 5 can maintain the shape of the negative pressure cover 2 and prevent dust from accumulating in the assembly groove 23, which has the advantage of simple structure.

[0086] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A wearable breast pump, characterized in that: The device includes a flexible breast shield (1) and a negative pressure shield (2) sealed to the flexible breast shield (1). A negative pressure cavity (3) is formed between the negative pressure shield (2) and the flexible breast shield (1). The flexible breast shield (1) includes a breast shield (11) and a breast suction channel (12) integrally connected to the breast shield (11). The breast suction channel (12) is located inside the negative pressure cavity (3). Deformation structures (4) that can guide the deformation of the breast suction channel (12) are provided on the left and right sides of the breast suction channel (12). Both the bra (11), the breast suction channel (12), and the deformation structure (4) are made of elastic material. The bra (11), the breast suction channel (12), and the deformation structure (4) are integrally formed. There is a certain distance between the inner wall of the negative pressure cover (2) and the deformation structure (4) to form a deformation space (31) that allows the deformation structure (4) and the breast suction channel (12) to deform elastically. When the negative pressure cover (2) forms a negative pressure in the negative pressure cavity (3) under the action of the negative pressure source, the deformation structure (4) can deform and expand.

2. The wearable breast pump according to claim 1, characterized in that: The number of the deformable structures (4) is multiple, and the multiple deformable structures (4) are symmetrically distributed on the outer peripheral surface of the milk suction channel (12).

3. The wearable breast pump according to any one of claims 1 or 2, characterized in that: The deformable structure (4) is strip-shaped, wavy, or serrated, and is arranged along the opening of the bra (11) toward the end of the breast suction channel (12).

4. The wearable breast pump according to claim 1, characterized in that: The cross-sectional shape of the negative pressure shield (2) is elliptical, or axially symmetric polygonal along the center line of the negative pressure shield (2).

5. The wearable breast pump according to claim 1, characterized in that: A sealing component is provided between the negative pressure cover (2) and the breast pumping channel (12). The sealing component includes a sealing groove (121) located outside the breast pumping channel (12) and a sealing slot (21) located on the negative pressure cover (2). The sealing slot (21) engages with the sealing groove (121).

6. The wearable breast pump according to claim 1, characterized in that: The top of the breast pumping channel (12) is provided with a reinforcing rib (122).

7. The wearable breast pump according to claim 1, characterized in that: The bottom of the milk suction channel (12) is provided with a milk outlet channel (123), and a one-way valve assembly is provided on the output end of the milk outlet channel (123). The one-way valve assembly is integrally formed with the milk outlet channel (123) or can be detachably connected.

8. The wearable breast pump according to claim 7, characterized in that: The one-way valve assembly includes a valve seat (125) and a plate-shaped deformation plate (124). The valve seat (125) is located at the bottom of the milk suction channel (12) and adjacent to the milk outlet channel (123). The plate-shaped deformation plate (124) includes a fixed section (1241) and a deformation section (1242). The deformation section (1242) is mounted on the valve seat (125) and is located below the output end of the milk outlet channel (123). The deformation section (1242) can elastically deform in the direction of approaching or moving away from the output end of the milk outlet channel (123) to close or open the output end of the milk outlet channel (123).

9. The wearable breast pump according to claim 8, characterized in that: The assembly valve seat (125) includes a fixed insert plate, on which a plug hole (1251) is provided, and the deformable section (1242) is provided with a plug-in slot (1243) corresponding to the plug hole (1251).

10. The wearable breast pump according to claim 1, characterized in that: The negative pressure shroud (2) is provided with a baffle plate (22), and the inner wall of the baffle plate (22) and the inner wall of the negative pressure shroud (2) enclose the negative pressure cavity (3).

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