Breast pump not prone to milk leakage

Abstract

The utility model provides a breast pump not prone to milk leakage, which relates to the field of breast pumps and comprises a cover body, a three-way assembly and a milk bottle. The three-way assembly comprises a base shell and a sealing cover; the base shell comprises a negative pressure shell, a feeding bottle connecting shell and a flexible film; the negative pressure shell and the flexible film form a negative pressure cavity; a negative pressure opening communicated with the negative pressure cavity is formed in the negative pressure shell; the feeding bottle connecting shell is fixed below the negative pressure shell; a milk outlet and a milk bottle connecting opening are formed in the milk bottle connecting shell; the feeding bottle is detachably fixed at the feeding bottle connector; the feeding bottle is communicated with the milk outlet; the sealing cover and the base shell form a communicating cavity; a cover body connecting port is formed in the sealing cover; the cover body is detachably fixed at the cover body connecting port; and the milk outlet is communicated with the communicating cavity. According to the breast pump not prone to milk leakage, the problem that in the prior art, an air bag cover of a breast pump is pulled by a pipeline easily to open and leak milk is solved, and the situation that the air bag cover of the breast pump is pulled by the pipeline to open and leak milk can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of breast pumps, specifically to a breast pump that is less prone to milk leakage. Background Technology

[0002] Breast pumps are a common tool for breastfeeding mothers. A breast pump typically consists of a breast shield and a main unit. The main unit provides and controls suction. The breast shield usually includes the shield body, a three-way valve assembly, and a bottle. The three-way valve assembly includes an inlet, a negative pressure outlet, and a milk outlet. The inlet is connected to the breast shield body, the negative pressure outlet connects to the main unit, and the milk outlet has a one-way valve and a bottle. When the main unit is working, the air pressure changes within the three-way valve assembly, causing the mother's breast, which is in contact with the shield body, to be subjected to suction. This causes milk to be secreted from the nipple into the three-way valve assembly. The milk accumulates at the milk outlet and passes through the one-way valve into the bottle. This process is repeated until the pumping is complete.

[0003] The existing three-way connector usually has a flexible membrane at the negative pressure port to prevent milk from entering the breast pump main unit. The flexible membrane is a structure that deforms with suction. To ensure a stable connection between the breast pump and the breast pump main unit, a negative pressure chamber is set up. This negative pressure chamber is composed of a rigid shell and a flexible membrane. The rigid shell and the flexible membrane surround the negative pressure chamber. The opening on the rigid shell is connected to the breast pump main unit. The flexible membrane is set inside the three-way connector. When the breast pump main unit is working, the air pressure inside the negative pressure chamber changes, causing the flexible membrane to deform. When the flexible membrane deforms, the air pressure inside the three-way connector changes.

[0004] After use, the breast pump needs to be cleaned inside. At this time, the flexible membrane needs to be removed. Therefore, the rigid shell is usually equipped with a detachable structure. By separating the detachable structure from the three-way assembly, the flexible membrane can be removed from inside the three-way assembly.

[0005] In the prior art, such as the breast pump with a breast pad and a separator disclosed in Chinese Patent Application No. 202122317871.4, the air bladder cover is the aforementioned detachable structure, and the flexible separator is the aforementioned flexible membrane. When the breast pump needs to be cleaned, the flexible separator inside is removed by rotating the air bladder cover relative to its three-way connector at the hinge. However, in this structure, the negative pressure port connected to the breast pump main unit is located on the air bladder cover, and the breast pump main unit is connected to the negative pressure port on the air bladder cover through a pipe. Since the breast pump main unit is stationary during breast pumping, when the mother moves (such as when adjusting her posture), the pipe will apply a traction force to the air bladder cover. This traction force may separate the air bladder cover from the three-way connector, and the flexible separator may therefore fall out from the three-way connector, and milk may leak from the separation of the air bladder cover and the three-way connector. Utility Model Content

[0006] To address the aforementioned technical problems, the present invention provides a breast pump that is less prone to leakage, which can prevent the breast pump main unit from opening the air bladder cover through the pipe, thus avoiding milk leakage.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a leak-proof breast pump, comprising a cover, a three-way assembly, and a bottle. The three-way assembly includes a base shell and a rigid sealing cap. The base shell includes a rigid negative pressure shell, a rigid bottle connecting shell, and a flexible membrane. The negative pressure shell is cover-shaped. The flexible membrane seals the cover-shaped opening of the negative pressure shell. The negative pressure shell and the flexible membrane form a negative pressure chamber. A negative pressure port is provided on the negative pressure shell to communicate with the negative pressure chamber. The bottle connecting shell is fixed below the negative pressure shell. A milk outlet and a bottle connection port are provided on the bottle connecting shell. The milk outlet is connected to the bottle. The interface is connected; the baby bottle is detachably fixed at the baby bottle connection port; the baby bottle is positioned below the milk outlet; the sealing cap is detachably fixed on the base housing; the sealing cap and the base housing form a communicating cavity; the flexible membrane is the side wall of the communicating cavity; the negative pressure cavity and the communicating cavity are located on opposite sides of the flexible membrane; the sealing cap has a cover connection port; when the sealing cap is fixed on the base housing, the cover connection port communicates with the communicating cavity; the milk outlet communicates with the communicating cavity; the cover is detachably fixed at the cover connection port.

[0009] The breast pump provided by this utility model, which is not prone to milk leakage, preferably has a duckbill valve at the milk outlet; the inlet of the duckbill valve faces the connecting cavity; and the outlet of the duckbill valve faces the bottle connection port.

[0010] The breast pump that is not prone to leakage provided by this utility model is preferably such that the sealing cover and the base housing are rotatably fixed by a hinge.

[0011] The breast pump provided by this utility model, which is not prone to milk leakage, preferably has an internal thread on the inner wall of the bottle connection port and an external thread on the outer wall of the bottle mouth; the internal thread matches the external thread.

[0012] The present invention provides a breast pump that is less prone to leakage. Preferably, the base housing includes a flow guide plate; the flow guide plate is disposed below the milk outlet; the flow guide plate separates the bottle connection port from the milk outlet; the upper surface of the flow guide plate is a conical surface with a downward concave center; a flow guide hole is provided at the concave part of the conical surface of the flow guide plate; the flow guide hole vertically penetrates the flow guide plate; when the bottle is fixed on the bottle connection port, the vertical projection of the flow guide hole is inside the bottle mouth.

[0013] The breast pump that is not prone to leakage provided by this utility model preferably has a first limiting plate and a second limiting plate rotatably fixed on the sealing cover; the base housing has a first limiting groove and a second limiting groove; after the sealing cover is fixed on the base housing, during the rotation of the first limiting plate relative to the sealing cover, the first limiting plate can be inserted into the first limiting groove for fixation; during the rotation of the second limiting plate relative to the sealing cover, the second limiting plate can be inserted into the second limiting groove for fixation.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] This utility model provides a breast pump that is less prone to leakage, relating to the field of breast pumps, including a shield, a three-way assembly, and a bottle; the three-way assembly includes a base shell and a rigid sealing cap; the base shell includes a rigid negative pressure shell, a rigid bottle connecting shell, and a flexible membrane; the negative pressure shell is shield-shaped; the flexible membrane seals the shield-shaped opening of the negative pressure shell; the negative pressure shell and the flexible membrane form a negative pressure cavity; a negative pressure port is provided on the negative pressure shell to communicate with the negative pressure cavity; the bottle connecting shell is fixed below the negative pressure shell; a milk outlet and a bottle connector are provided on the bottle connecting shell. The present invention comprises the following components: a milk outlet connected to a bottle connection port; a detachable and fixed bottle at the bottle connection port; a detachable and fixed sealing cap on a base housing; a connecting cavity formed by the sealing cap and the base housing; a flexible membrane serving as the sidewall of the connecting cavity; a negative pressure chamber located on opposite sides of the flexible membrane; a cover connection port on the sealing cap; when the sealing cap is fixed to the base housing, the cover connection port communicates with the connecting cavity; the milk outlet communicates with the connecting cavity; and the cover is detachably fixed at the cover connection port. This invention provides a leak-proof breast pump that solves the problem of easy opening and leakage of the air bladder cover in existing breast pumps, preventing leakage due to the air bladder cover being pulled open by the tubing. Attached Figure Description

[0016] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of the breast pump that is not prone to leakage, provided in Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the base shell of the breast pump that is not prone to milk leakage, provided in Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the negative pressure housing of the breast pump that is not prone to milk leakage, provided in Embodiment 1 of this utility model.

[0020] Figure 4 This is a schematic diagram of the drainage plate of the breast pump that is not prone to milk leakage, provided in Embodiment 1 of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the baby bottle of the breast pump that is not prone to leakage, as provided in Embodiment 1 of this utility model.

[0022] Figure 6 This is a schematic diagram of the negative pressure port of the breast pump that is not prone to milk leakage, provided in Embodiment 1 of this utility model.

[0023] Figure 7 This is a schematic diagram of the structure of the sealing cap of the breast pump that is not prone to leakage, provided in Embodiment 1 of this utility model, fixed on the base shell.

[0024] Figure 8 This is a schematic diagram of the sealing cover of the breast pump that is not prone to leakage, provided in Embodiment 1 of this utility model. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. It should also be noted that the terminology used in this utility model is for describing specific implementations only and is not intended to limit the exemplary implementations according to this application.

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without inventive effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] The breast pump that is not prone to leakage provided in Embodiment 1 of this utility model is a breast pump with a built-in negative pressure component, such as... Figures 1 to 8As shown, the device includes a cover 1, a three-way assembly 2, and a baby bottle 3. The three-way assembly 2 includes a base housing 21 and a rigid sealing cap 22. The base housing 21 includes a rigid negative pressure housing 211, a rigid baby bottle connecting housing 212, and a flexible membrane 213. The negative pressure housing 211 is cover-shaped. The flexible membrane 213 seals the cover-shaped opening of the negative pressure housing 211. The negative pressure housing 211 and the flexible membrane 213 form a negative pressure chamber. A negative pressure port 2111 is provided on the negative pressure housing 211 to communicate with the negative pressure chamber. The baby bottle connecting housing 212 is fixed below the negative pressure housing 211. A milk outlet 2121 and a baby bottle connection port 2122 are provided on the baby bottle connecting housing 212. The milk outlet 2121 is connected to the bottle connection port 2122; the bottle 3 is detachably fixed at the bottle connection port 2122; the bottle 3 is located below the milk outlet 2121; the sealing cap 22 is detachably fixed to the base housing; the sealing cap 22 and the base housing 21 form a communicating cavity; the flexible membrane 213 is the side wall of the communicating cavity; the negative pressure cavity and the communicating cavity are located on opposite sides of the flexible membrane 213; the sealing cap 22 has a cover connection port 221; when the sealing cap 22 is fixed to the base housing 21, the cover connection port 221 is connected to the communicating cavity; the milk outlet 2121 is connected to the communicating cavity; the cover 1 is detachably fixed at the cover connection port 221.

[0029] When using the non-leaking breast pump provided in Embodiment 1 of this utility model, the mother places her breast against the cover 1, with her nipple facing the cover connection port 221, which is connected to the connecting cavity. The existing breast pump main unit, which can provide suction, is connected to the negative pressure port 2111 through a pipe. The operation of the breast pump main unit causes changes in the air pressure inside the negative pressure cavity, which causes the flexible membrane 213, which serves as the side wall of the negative pressure cavity, to deform due to the air pressure change. After the flexible membrane 213 deforms, the spatial volume of the connecting cavity changes (the connecting cavity forms a closed cavity after the mother's breast is against it, and the air pressure inside the closed cavity changes due to the deformation of the flexible membrane 213), thus creating an air pressure difference. Milk flows from the nipple of the breast into the connecting cavity. Due to gravity, the milk falls to the bottle connecting shell 212 located below the negative pressure shell 211, and flows out of the connecting cavity from the milk outlet 2121, entering the bottle 3 connected to the bottle connection port 2122.

[0030] When the breast pump needs to be cleaned, the flexible membrane 213 can be removed and cleaned by separating the sealing cover 22 of the fixed cover 1 from the base housing 21.

[0031] During breast pumping, the mother usually holds the bottle, keeping the breast pump cover close to her breast. As the mother moves, she continues to hold the bottle and keep the cover close to her breast. Therefore, the breast pump moves with the mother's movements, while the breast pump unit is usually placed next to the mother and does not move with her. When the distance between the breast pump and the breast pump unit is too far, it may cause the tubing connecting the breast pump and the breast pump unit to become taut, and the tubing will exert a pulling force on the structure at the connection point of the breast pump. In the prior art described in the background section, the pipe is connected to the airbag cover, and the airbag cover is fixed to the three-way component. When the mother holds the bottle so that its cover is against her breast, the position of the three-way component that fixes the cover is fixed relative to the breast, but the airbag cover can be rotated and fixed to the three-way component. When the pipe is taut, the pipe may pull the airbag cover apart from its three-way component, losing the fixation of the airbag cover for the flexible separator. The flexible separator may fall off the three-way component due to the suction of the breast pump. After the flexible separator falls off the three-way component, it will no longer be able to block the milk, which may cause the milk to flow out from the separation point between the airbag cover and the three-way component, resulting in milk leakage. In this embodiment, the pipe is connected to the negative pressure port 2111 of the negative pressure housing 211 of the three-way assembly 2 of the breast pump. The negative pressure housing 211 and the bottle connecting housing 212 are fixed. The bottle connecting housing 212 is fixed to the bottle 3. Therefore, when the mother holds the bottle 3 and the cover 1 is pressed against the breast, the position of the bottle connecting housing 212 is fixed relative to the breast, the position of the negative pressure housing 211 is fixed relative to the breast, and the position of the negative pressure port 2111 is fixed relative to the breast. When the pipe is taut, the pipe directly applies pressure to the base housing 21. In extreme cases, the pipe may detach from the negative pressure port 2111. The three-way assembly will not separate from the airbag cover, thus preventing milk leakage.

[0032] The breast pump that is less prone to milk leakage provided by this utility model embodiment solves the problem of milk leakage in the prior art because the air bladder cover is easily opened due to the pull of the pipe in the breast pump main unit by changing the structure of the three-way component 2 and changing the structural position of the three-way component 2 that is connected to the breast pump main unit through the pipe. It can avoid the situation of milk leakage when the breast pump air bladder cover is opened.

[0033] As a preferred embodiment, in this embodiment, a duckbill valve 4 is provided at the milk outlet 2121; the inlet of the duckbill valve 3 faces the connecting cavity; and the outlet of the duckbill valve 3 faces the bottle connection port 2122.

[0034] To facilitate the separation and assembly of the sealing cap 22 and the base housing 21, in this embodiment, the sealing cap 22 and the base housing 21 are rotatably fixed by a hinge.

[0035] As a preferred embodiment, in this case, the inner wall of the bottle connector 2122 is provided with an internal thread; the outer wall of the bottle opening 3 is provided with an external thread; the internal thread and the external thread are matched. The connection between the bottle 3 and the three-way assembly via threaded engagement is existing technology and will not be elaborated upon here.

[0036] Since the function of the bottle connector 2122 is to connect the bottle 3, and the inner wall edge of the bottle connector 2122 is provided with internal threads, while the outer wall of the bottle mouth is provided with external threads, if the milk flows along the inner wall of the bottle connector 2122, the milk is prone to leaking at the connection between the outer wall of the bottle mouth and the inner wall of the bottle connector 2122. To avoid this situation, as a preferred embodiment, in this embodiment, the base housing 21 includes a drainage plate 2. 14; The flow guide plate 214 is located below the milk outlet 2121; The flow guide plate 214 separates the bottle connection port 2122 from the milk outlet 2121; The upper surface of the flow guide plate 214 is a conical surface with a downward concave center; A flow guide hole 2141 is provided at the concave part of the conical surface of the flow guide plate 214; The flow guide hole 2141 vertically penetrates the flow guide plate 214; When the bottle 3 is fixed on the bottle connection port 2122, the vertical projection of the flow guide hole 214 is inside the mouth of the bottle 3. The flow guide plate 214 separates the milk outlet 2121 from the bottle connection port 2122. After the milk flows out of the milk outlet 2121 of the three-way assembly 2 (passing through the duckbill valve 4), it will fall on the flow guide plate 214 and flow along the conical surface of the upper surface of the flow guide plate 214 to the flow hole 2141. The flow hole 2141 is located above the bottle mouth of the bottle 3 and faces the inside of the bottle 3 to prevent the milk from flowing along the inner wall of the bottle connection port 2122 and the outer wall of the bottle mouth of the bottle 3, thus preventing leakage.

[0037] After the sealing cap 22 is fixed relative to the base housing 21, in order to prevent the sealing cap 22 and the base housing 21 from rotating at the hinge, which would cause milk leakage from the communicating cavity surrounded by the sealing cap 22 and the base housing 21, as a preferred solution in this embodiment, a first limiting plate 222 and a second limiting plate 223 are rotatably fixed on the sealing cap 22; a first limiting groove 215 and a second limiting groove 216 are provided on the base housing 21; after the sealing cap 22 is fixed on the base housing 21, during the rotation of the first limiting plate 222 relative to the sealing cap 22, the first limiting plate 222 can be inserted into the first limiting groove 215 for fixation; during the rotation of the second limiting plate 223 relative to the sealing cap 22, the second limiting plate 223 can be inserted into the second limiting groove 216 for fixation. By providing a rotatable first limiting plate 222 and a second limiting plate 223 on the sealing cover 22, when it is necessary to rotate the sealing cover 22 relative to the base housing 21, the first limiting plate 222 and the second limiting plate 223 are moved out of the first limiting groove 215 and the second limiting groove 216 by rotating the first limiting plate 222 and the second limiting plate 223. When it is necessary to fix the sealing cover 22 to the base housing 21, the first limiting plate 222 and the second limiting plate 223 are rotated until they are fixed in the first limiting groove 215 and the second limiting groove 216. The first limiting groove 215 and the second limiting groove 216 fix the first limiting plate 222 and the second limiting plate 223, so that the first limiting plate 222 and the second limiting plate 223 apply pressure toward the base housing 21 to fix the sealing cover 22.

[0038] In summary, this utility model provides a breast pump that is less prone to leakage, relating to the field of breast pumps, including a shield, a three-way assembly, and a bottle; the three-way assembly includes a base shell and a rigid sealing cap; the base shell includes a rigid negative pressure shell, a rigid bottle connecting shell, and a flexible membrane; the negative pressure shell is shield-shaped; the flexible membrane seals the shield-shaped opening of the negative pressure shell; the negative pressure shell and the flexible membrane form a negative pressure chamber; a negative pressure port is provided on the negative pressure shell to communicate with the negative pressure chamber; the bottle connecting shell is fixed below the negative pressure shell; the bottle connecting shell has a milk outlet and a bottle connection port; the milk outlet... The nipple outlet is connected to the bottle connection port; the bottle is detachably fixed at the bottle connection port; the bottle is positioned below the milk outlet; the sealing cap is detachably fixed to the base housing; the sealing cap and the base housing form a communicating cavity; the flexible membrane is the sidewall of the communicating cavity; the negative pressure cavity and the communicating cavity are located on opposite sides of the flexible membrane; the sealing cap has a cover connection port; when the sealing cap is fixed to the base housing, the cover connection port is connected to the communicating cavity; the milk outlet is connected to the communicating cavity; the cover is detachably fixed at the cover connection port. This invention provides a leak-proof breast pump, solving the problem of easy opening and leakage of the air bladder cover in existing breast pumps, and preventing leakage due to the air bladder cover being pulled open by the tubing.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A breast pump that is less prone to milk leakage, characterized in that, Includes the cover, three-way connector, and baby bottle; The tee assembly includes a base housing and a rigid sealing cap; The base housing includes a rigid negative pressure housing, a rigid bottle connecting housing, and a flexible membrane; the negative pressure housing is cover-shaped. The flexible membrane seals the cover-shaped opening of the negative pressure housing; the negative pressure housing and the flexible membrane together form a negative pressure cavity; The negative pressure housing has a negative pressure port that connects to the negative pressure chamber; The bottle connecting housing is fixed below the negative pressure housing; the bottle connecting housing has a milk outlet and a bottle connection port; the milk outlet communicates with the bottle connection port; the bottle is detachably fixed at the bottle connection port; the bottle is positioned below the milk outlet; The sealing cap is detachably fixed to the base housing; the sealing cap and the base housing form a communicating cavity; the flexible membrane is the sidewall of the communicating cavity; the negative pressure cavity and the communicating cavity are located on opposite sides of the flexible membrane; The sealing cover has a cover connection port; when the sealing cover is fixed on the base housing, the cover connection port communicates with the communicating cavity; the milk outlet communicates with the communicating cavity. The cover can be detachably fixed at the cover connection port.

2. The breast pump that is not prone to leakage as described in claim 1, characterized in that, A duckbill valve is provided at the milk outlet; the inlet of the duckbill valve faces the connecting cavity; the outlet of the duckbill valve faces the bottle connection port.

3. The breast pump that is not prone to leakage as described in claim 1, characterized in that, The sealing cap and the base housing are rotatably fixed by a hinge.

4. The breast pump that is not prone to leakage as described in claim 1, characterized in that, The inner wall of the bottle connector is provided with an internal thread; the outer wall of the bottle opening is provided with an external thread; the internal thread matches the external thread.

5. The breast pump that is not prone to leakage as described in claim 1, characterized in that, The base housing includes a drainage plate; The guide plate is disposed below the milk outlet; the guide plate separates the bottle connection port from the milk outlet; The upper surface of the drainage plate is a conical surface with a downward concave center; a drainage hole is provided at the concave part of the conical surface of the drainage plate; the drainage hole vertically penetrates the drainage plate; When the baby bottle is fixed to the bottle connector, the vertical projection of the drainage hole is inside the bottle opening.

6. The breast pump that is not prone to leakage as described in claim 2, characterized in that, The sealing cover is rotatably fixed with a first limiting plate and a second limiting plate; the base housing is provided with a first limiting groove and a second limiting groove; After the sealing cover is fixed on the base housing, the first limiting plate can be inserted into the first limiting groove for fixation during the rotation of the first limiting plate relative to the sealing cover. During the rotation of the second limiting plate relative to the sealing cover, the second limiting plate can be inserted into the second limiting groove for fixation.

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