Wearable breast pump

Abstract

The utility model provides a wearable breast pump, which relates to the field of breast pumps and comprises a shell, a three-way piece, a duckbill valve and a horn cover. The shell is detachably fixed on the horn cover; the shell and the horn cover form a milk storage space; the three-way piece comprises a runner pipe; the circulating pipe comprises a milk inlet and a milk outlet; a negative pressure opening is formed in the side wall of the runner pipe; the milk inlet is communicated with the horn cover; the milk outlet is communicated with the duckbill valve; the negative pressure opening is communicated with a pipeline; the pipeline is communicated with the outside; the duckbill valve comprises a valve body and a valve clack; if the runner pipe is horizontally arranged, a groove is formed in the valve body in the horizontal direction; an opening is formed in the valve body in the vertical direction; the opening is communicated with the groove; the milk outlet is sleeved with the groove; the opening faces downwards; the valve clack is fixed with the valve body; a liquid channel is arranged in the valve clack; and the liquid channel extends downwards. According to the utility model, the problem that in the prior art, as the milk outlet pipeline extends downwards, the milk is easy to submerge the duckbill valve in a short time, so that the follow-up milk discharge of the duckbill valve is not smooth can be solved.

Description

Technical Field

[0001] This utility model relates to the field of breast pumps, and more particularly to a wearable breast pump. Background Technology

[0002] A breast pump is a tool used to express breast milk accumulated in the mammary glands. For example, Chinese patent application number 202222303754.7 discloses a wearable breast pump, including a shell, a three-way connector, and a bottle. The three-way connector is disposed inside the shell. The bottle is snapped into the shell. The bottle includes a milk storage bottle, a one-way valve, and a bottle cap. The bottle cap has a through hole for fixing the one-way valve. The bottle cap is detachably fixed to the opening of the milk storage bottle. The one-way valve is detachably fixed to the bottle cap. The milk outlet of the one-way valve extends into the milk storage bottle through the through hole. The lower end of the shell has an opening. The one-way valve passes through the opening and connects to the three-way connector. The three-way connector communicates with the inside of the bottle.

[0003] The wearable breast pump provided by the above patent uses a one-way valve to connect a three-way fitting and a milk storage bottle; wherein, the one-way valve is a duckbill valve; the three-way fitting includes a flow tube, one end of which is closed and the other end is provided with a milk inlet, and a milk outlet tube extends from the side wall of the flow tube near the closed end, one end of which is connected to the flow tube, and the other end of which is provided with a milk outlet, and a negative pressure port is also provided on the side wall of the flow tube; the duckbill valve is fitted at the milk outlet;

[0004] In existing technologies, such as Figure 6 As shown, in order to obtain a larger milk storage space, an outer shell is used to cover the outside of the horn cover, and a milk storage space is formed between the outer shell and the outside of the horn cover. The milk inlet of the three-way connector is connected to the horn cover, and the three-way connector is set inside the milk storage space. However, when using the above-mentioned wearable breast pump, since the duckbill valve is sleeved on the milk outlet of the milk outlet pipe set on the side wall of the flow tube, and for the convenience of milk dispensing, the milk outlet pipe extends downward, when milk flows into the milk storage space from the duckbill valve, the milk can easily submerge the duckbill valve in a short time, thereby causing the duckbill valve to be subjected to the pressure of the milk in the milk storage space, which in turn makes the subsequent milk dispensing of the duckbill valve not smooth. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a wearable breast pump that solves the problem in existing technologies where, due to the downward-extending milk outlet, milk tends to quickly overflow the milk storage space from the spout valve, causing the spout valve to be pressured by the milk in the storage space, thus hindering subsequent milk flow. This invention improves the milk flow efficiency of the spout valve.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a wearable breast pump, including a cover-shaped outer shell, a three-way connector, a duckbill valve, and a funnel-shaped cover; the funnel-shaped cover is funnel-shaped; the small opening of the funnel-shaped cover faces the inner cavity of the outer shell; the outer shell is detachably fixed to the large opening of the funnel-shaped cover; a milk storage space is formed between the outer shell and the funnel-shaped cover;

[0008] The three-way fitting includes a flow tube; the flow tube includes a milk inlet and a milk outlet; a negative pressure port is provided on the side wall of the flow tube; the milk inlet is connected to and communicates with the funnel opening of the horn cover; the milk outlet is connected to and communicates with the duckbill valve; a through hole is provided on the outer shell; a pipe is connected to the negative pressure port; the pipe passes through the through hole and communicates with the outside of the milk storage space; the side wall of the pipe is in close contact with the wall of the through hole;

[0009] The duckbill valve includes a valve body and a valve disc; if the flow tube is horizontally arranged, the valve body has a groove in the horizontal direction; the valve body has an opening in the vertical direction; the opening is connected to the groove; the groove is fitted onto the milk outlet; the opening faces downward.

[0010] The valve disc is fixed to the valve body; a liquid channel is provided inside the valve disc; the liquid channel includes an inlet and an outlet; the inlet is connected to and communicates with the opening; the outlet faces downward; the liquid channel extends downward.

[0011] The wearable breast pump provided by this utility model preferably includes a valve flap comprising a first contraction flap and a second contraction flap; both the first and second contraction flaps are planar; the valve flap further includes a first connecting flap and a second connecting flap; both the first and second connecting flaps are arc-shaped; the planes of the first and second contraction flaps are inclined to each other; the side of the first and second contraction flaps that are close together is taken as the front end of the first contraction flap, and the first and second connecting flaps are respectively located on both sides of the first contraction flap; the first and second connecting flaps are respectively connected to the first and second contraction flaps; the first, second, first, and second connecting flaps surround to form the liquid channel; the side of the liquid channel with a larger cross-section is taken as the liquid inlet, and the side of the liquid channel with a smaller cross-section is taken as the liquid outlet.

[0012] The wearable breast pump provided by this utility model preferably further includes a negative suction component; the negative suction component includes a negative suction base, a suction silicone, and a plug.

[0013] The negative suction base is grooved; the suction silicone covers the opening of the negative suction base; the suction silicone is located between the negative suction base and the plug; the plug presses the suction silicone onto the negative suction base; a flat negative pressure cavity is formed between the suction silicone and the negative suction base; a suction cavity is formed between the suction silicone and the plug;

[0014] The negative pressure port is connected to the negative pressure chamber; the suction chamber is connected to the pipe.

[0015] The wearable breast pump provided by this utility model preferably has the side closer to the opening as the far end of the valve body and the side farther from the opening as the near end of the valve body, and the cross-section of the groove gradually decreases from near to far.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] The wearable breast pump provided by this utility model includes a cover-shaped outer shell, a three-way fitting, a duckbill valve, and a horn cover; the outer shell and the horn cover are engaged by snaps, so that the outer shell and the horn cover can be detached and fixed, which facilitates cleaning of the inner cavity of the outer shell and the outer surface of the horn cover.

[0018] Furthermore, the three-way fitting includes a flow tube with an inlet and an outlet at both ends. A negative pressure port is formed on the side wall of the flow tube. The inlet is connected to and communicates with the funnel opening of the horn cover, and the outlet is connected to and communicates with the duckbill valve. Milk flows from the inlet along the flow tube to the outlet and is discharged into the milk storage space from the duckbill valve. The duckbill valve includes a valve body and a valve disc. If the flow tube is horizontally set, the valve body has a groove in the horizontal direction, so that the outlet fits into the groove, realizing the connection between the outlet and the duckbill valve. If the duckbill valve is submerged in the milk stored in the milk storage space, the pressure of the milk in the milk storage space will make it difficult for the duckbill valve to discharge subsequent milk. In order to improve the milk discharge efficiency of the duckbill valve, the valve body has an opening in the vertical direction, which is connected to the groove. The valve has an opening facing downwards, allowing milk to drain downwards from the opening. The valve disc is fixed to the valve body and contains a liquid channel, which includes an inlet and an outlet. The inlet is connected to and communicates with the opening. Milk enters the downward-extending liquid channel through the inlet and drains into the milk storage space through the downward-facing outlet. Since the opening size of the outlet determines the milk-draining efficiency of the duckbill valve, it is necessary to increase the liquid pressure in the liquid channel to make the outlet open wider. This is achieved by changing the milk's transport direction from horizontal to vertical. In addition to liquid pressure, the liquid's own weight is also included, giving the milk a greater squeezing force on the valve disc, thereby making the outlet open wider and improving the milk-draining efficiency of the duckbill valve.

[0019] Existing technology uses a structure where a milk outlet pipe extends downwards from a T-joint, and a duckbill valve is fitted outside the milk outlet pipe. When milk flows from the duckbill valve into the milk storage space, the downward extension of the milk outlet pipe reduces the distance between the duckbill valve and the bottom of the milk storage space. This allows the milk to easily submerge the duckbill valve in a short time, causing the duckbill valve to be subjected to pressure from the milk in the milk storage space, thus hindering subsequent milk discharge. The wearable breast pump provided by this invention removes the milk outlet pipe of the T-joint and changes the direction of milk flow through the duckbill valve, thereby increasing the distance between the outlet of the duckbill valve and the bottom of the milk storage space. Since liquid pressure is proportional to depth (i.e., the greater the depth, the greater the liquid pressure), increasing the distance between the duckbill valve and the bottom of the milk storage space reduces the pressure of the milk on the duckbill valve within the milk storage space, thereby improving the milk discharge efficiency of the duckbill valve. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a cross-sectional structural diagram of the wearable breast pump provided in Embodiment 1 of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the wearable breast pump provided in Embodiment 1 of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the duckbill valve provided in Embodiment 1 of this utility model.

[0024] Figure 4 This is a top view of the duckbill valve provided in Embodiment 1 of this utility model.

[0025] Figure 5 This is another three-dimensional structural schematic diagram of the duckbill valve provided in Embodiment 1 of this utility model.

[0026] Figure 6 This is a cross-sectional structural diagram of a wearable breast pump using existing technology. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0028] Example 1:

[0029] like Figures 1-5As shown, the wearable breast pump provided in Embodiment 1 of this utility model includes a cover-shaped outer shell 1, a three-way fitting 2, a duckbill valve 3, and a horn cover 4; the horn cover 4 is funnel-shaped; the small opening of the funnel of the horn cover 4 faces the inner cavity of the outer shell 1; the outer shell 1 is detachably fixed to the large opening of the funnel of the horn cover 4; a milk storage space 104 is formed between the outer shell 1 and the horn cover 4.

[0030] The three-way fitting 2 includes a flow tube 21; the flow tube 21 includes a milk inlet 211 and a milk outlet 212; a negative pressure port 213 is provided on the side wall of the flow tube 21; the milk inlet 211 is connected to and communicates with the funnel opening of the horn cover 4; the milk outlet 212 is connected to and communicates with the duckbill valve 3; a through hole 11 is provided on the outer shell 1; the negative pressure port 213 is connected to a pipe 5; the pipe 5 passes through the through hole 11 and communicates with the outside of the milk storage space 104; the side wall of the pipe 5 is tightly attached to the hole wall of the through hole 11.

[0031] The duckbill valve 3 includes a valve body 31 and a valve disc 32; if the flow tube 21 is set horizontally, the valve body 31 has a groove 311 in the horizontal direction; the valve body 31 has an opening 312 in the vertical direction; the opening 312 is connected to the groove 311; the groove 311 is fitted on the milk outlet 212; the opening 312 faces downward.

[0032] The valve disc 32 is fixed to the valve body 31; the valve disc 32 is provided with a liquid channel 321; the liquid channel 321 includes an inlet 3211 and an outlet 3212; the inlet 3211 is connected to and communicates with the outlet 312; the outlet 3212 faces downward; the liquid channel 321 extends downward.

[0033] When using the wearable breast pump provided in Embodiment 1 of this utility model, the funnel-shaped opening of the horn cover 4 is placed against the breast; an air pump is connected to the pipe 5, and the air pump generates suction, creating negative pressure on the negative suction port 213; milk in the breast enters the three-way fitting 2 through the milk inlet 211, flows along the flow pipe 21, and enters the groove 311 from the milk outlet 212; the milk enters the liquid channel 321 in the valve disc 32 through the opening 312 and the liquid inlet 3211; the milk generates pressure to squeeze the liquid outlet 3212 of the valve disc 32, causing the liquid outlet 3212 to open and discharge milk into the milk storage space 104.

[0034] The wearable breast pump provided in Embodiment 1 of this utility model includes a cover-shaped outer shell 1, a three-way fitting 2, a duckbill valve 3, and a horn cover 4; the outer shell 1 and the horn cover 4 are engaged by snap fasteners, so that the outer shell 1 and the horn cover 4 can be detached and fixed, which facilitates cleaning of the inner cavity of the outer shell 1 and the surface of the horn cover 4.

[0035] Furthermore, the three-way fitting 2 includes a flow tube 21, which has a milk inlet 211 and a milk outlet 212 at both ends. A negative pressure port 213 is opened on the side wall of the flow tube 21. The milk inlet 211 is connected to and communicates with the funnel opening of the horn cover 4, and the milk outlet 212 is connected to and communicates with the duckbill valve 3. Milk flows from the milk inlet 211 along the flow tube 21 to the milk outlet 212, and is discharged into the milk storage space 104 from the duckbill valve 3. The duckbill valve 3 includes a valve body 31 and a valve disc 32. If the flow... The pipe 21 is horizontally positioned, and the valve body 31 has a groove 311 in the horizontal direction, so that the milk outlet 212 is fitted into the groove 311, thus connecting the milk outlet 212 with the duckbill valve 3. If the duckbill valve 3 is submerged in the milk stored in the milk storage space 104, the pressure of the milk in the milk storage space 104 will make it difficult for the duckbill valve 3 to discharge subsequent milk. In order to improve the milk discharge efficiency of the duckbill valve 3, the valve body 31 has an opening 312 in the vertical direction, and the opening 312 and the groove 311 are connected. 11 are connected, with the opening 312 facing downwards, allowing milk to drain downwards from the opening 312; valve disc 32 is fixed to valve body 31, and a liquid channel 321 is provided inside valve disc 32. The liquid channel 321 includes an inlet 3211 and an outlet 3212. The inlet 3211 is connected to and communicates with the opening 312. Milk enters the downward-extending liquid channel 321 from the opening 312 through the inlet 3211, and is discharged into the milk storage cavity from the downward-facing outlet 3212. In section 104, since the opening and closing size of the liquid outlet 3212 determines the milk discharge efficiency of the duckbill valve 3, it is necessary to increase the liquid pressure in the liquid channel 321 to make the liquid outlet 3212 open wider. Here, the milk is transported from a horizontal direction to a vertical direction. In addition to the liquid pressure, the liquid's own gravity is also included, so that the milk has a greater squeezing force on the valve disc 32, thereby making the liquid outlet 3212 open wider and thus improving the milk discharge efficiency of the duckbill valve 3.

[0036] The existing technology uses a structure where the milk outlet pipe 01 extends downward from the three-way fitting, and the duckbill valve is sleeved outside the milk outlet pipe 01. When milk flows from the duckbill valve into the milk storage space, the downward extension of the milk outlet pipe 01 reduces the distance between the duckbill valve and the bottom of the milk storage space, making it easy for the milk to overflow the duckbill valve in a short time. This causes the duckbill valve to be subjected to the pressure of the milk in the milk storage space, which in turn makes the subsequent milk discharge from the duckbill valve difficult. By using the wearable breast pump provided in Embodiment 1 of this utility model, the milk outlet pipe 01 of the three-way fitting is removed, and the direction of milk flow is changed by the duckbill valve 3. This increases the distance between the outlet 3212 of the duckbill valve 3 and the bottom of the milk storage space 104. Since liquid pressure is proportional to depth, that is, the greater the depth, the greater the liquid pressure, by increasing the distance between the duckbill valve 3 and the bottom of the milk storage space 104, the pressure of the milk in the milk storage space 104 on the duckbill valve 3 can be reduced, thereby improving the milk discharge efficiency of the duckbill valve 3.

[0037] like Figures 3-5 As shown, the wearable breast pump provided in Embodiment 1 of this utility model, preferably, in order to achieve unidirectional milk discharge from the duckbill valve 3, specifically, the valve disc 32 includes a first contraction disc 322 and a second contraction disc 323; both the first contraction disc 322 and the second contraction disc 323 are planar; the valve disc 32 also includes a first connecting disc 324 and a second connecting disc 325; both the first connecting disc 324 and the second connecting disc 325 are arc-shaped; the planes of the first contraction disc 322 and the second contraction disc 323 are inclined to each other, and the first contraction disc 322 and the second contraction disc 323 form an angle; the side of the first contraction disc 322 and the second contraction disc 323 that are close together is taken as the front end of the first contraction disc 322, and the first connecting disc 324 and the second connecting disc 325 are respectively located on both sides of the first contraction disc 322, with the concave sides of the first connecting disc 324 and the second connecting disc 325 facing the first contraction disc 322, and the first connecting disc 324 and the second connecting disc 325 are connected to the first contraction disc 322. Two connecting flaps 325 connect the first contraction flap 322 and the second contraction flap 323 respectively, so that the first contraction flap 322, the second contraction flap 323, the first connecting flap 324 and the second connecting flap 325 surround to form a liquid channel 321. Since the planes of the first contraction flap 322 and the second contraction flap 323 are inclined to each other, the liquid channel 321 has a structure with a large cross-section on one side and a small cross-section on the other side. The opening on the side with the larger cross-section of the liquid channel 321 is used as the inlet 3211, and the opening on the side with the smaller cross-section of the liquid channel 321 is used as the outlet 3212. When the water pressure in the liquid channel 321 increases, the milk squeezing valve flap 32 and the outlet 3212 open to discharge the milk in the liquid channel 321. When the water pressure in the liquid channel 321 decreases, the outlet 3212 closes to prevent the milk in the milk storage space 104 from entering the liquid channel 321, thereby realizing the one-way milk discharge of the duckbill valve 3.

[0038] like Figure 1 As shown, the wearable breast pump provided in Embodiment 1 of this utility model preferably includes a negative suction component 6 in order to generate negative pressure at the negative suction port 213; the negative suction component 6 includes a negative suction base 61, a suction silicone 62, and a plug 63.

[0039] The negative suction base 61 is grooved; the suction silicone 62 covers the opening of the negative suction base 61; the suction silicone 62 is located between the negative suction base 61 and the plug 63; the plug 63 presses the suction silicone 62 onto the negative suction base 61; a flat negative pressure cavity 6012 is formed between the suction silicone 62 and the negative suction base 61; a suction cavity 6023 is formed between the suction silicone 62 and the plug 63; the negative pressure port 213 is connected to the negative pressure cavity 6012; the suction cavity 6023 is connected to the pipe 5.

[0040] The air pump draws gas from the suction chamber 6023 through the pipe 5. The suction silicone 62 contracts towards the plug 63. The negative pressure chamber 6012 lacks air and needs to draw air from the negative pressure port 213, thereby generating negative pressure suction at the negative pressure port 213. By intermittently drawing air from and releasing air through the pipe 5, the contraction of the suction chamber 6023 is controlled, so that milk in the breast can be drawn out through negative pressure.

[0041] like Figures 3-5 As shown, in the wearable breast pump provided in Embodiment 1 of this utility model, preferably, the side closer to the opening 312 is taken as the far end of the valve body 31, and the side farther away from the opening 312 is taken as the near end of the valve body 31, and the cross section of the groove 311 gradually decreases from near to far.

[0042] When milk is discharged from the outlet 212 of the flow tube 21, it first passes through the end of the groove 311 with a larger cross-section. Then the cross-section of the groove 311 gradually decreases. As the cross-section of the groove 311 decreases, the flow rate of the milk gradually increases, thereby increasing the storage speed of the milk into the milk storage space 104.

[0043] In summary, the wearable breast pump provided by this utility model can solve the problem in the prior art where, because the milk outlet extends downwards, when milk flows from the duckbill valve into the milk storage space, the milk easily overflows the duckbill valve in a short time, causing the duckbill valve to be subjected to the pressure of the milk in the milk storage space, thus making subsequent milk discharge from the duckbill valve difficult; thereby improving the milk discharge efficiency of the duckbill valve.

[0044] Those skilled in the art should understand that variations can be implemented by combining existing technology and the above embodiments, and will not be elaborated here. Such variations do not affect the substantive content of this utility model, and will not be elaborated here.

[0045] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art. Any possible variations and modifications made by those skilled in the art without departing from the technical solution of this utility model, or equivalent embodiments with equivalent changes, do not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution, shall still fall within the protection scope of this utility model.

Claims

1. A wearable breast pump, characterized in that, The device includes a cover-shaped outer shell, a three-way fitting, a duckbill valve, and a funnel-shaped cover; the funnel-shaped cover has a small opening facing the inner cavity of the outer shell; the outer shell is detachably fixed to the large opening of the funnel-shaped cover; a milk storage space is formed between the outer shell and the funnel-shaped cover. The three-way fitting includes a flow tube; the flow tube includes a milk inlet and a milk outlet; a negative pressure port is provided on the side wall of the flow tube; the milk inlet is connected to and communicates with the funnel opening of the horn cover; the milk outlet is connected to and communicates with the duckbill valve; a through hole is provided on the outer shell; a pipe is connected to the negative pressure port; the pipe passes through the through hole and communicates with the outside of the milk storage space; the side wall of the pipe is in close contact with the wall of the through hole; The duckbill valve includes a valve body and a valve disc; if the flow tube is horizontally arranged, the valve body has a groove in the horizontal direction; the valve body has an opening in the vertical direction; the opening is connected to the groove; the groove is fitted onto the milk outlet; the opening faces downward. The valve disc is fixed to the valve body; a liquid channel is provided inside the valve disc; the liquid channel includes an inlet and an outlet; the inlet is connected to and communicates with the opening; the outlet faces downward; the liquid channel extends downward.

2. The wearable breast pump as described in claim 1, characterized in that, The valve disc includes a first contraction valve and a second contraction valve; both the first contraction valve and the second contraction valve are planar; the valve disc also includes a first connecting valve and a second connecting valve; both the first connecting valve and the second connecting valve are arc-shaped; the planes of the first contraction valve and the second contraction valve are inclined to each other; the side of the first contraction valve and the second contraction valve that are close to each other is taken as the front end of the first contraction valve, and the first connecting valve and the second connecting valve are respectively located on both sides of the first contraction valve; The first connecting flap and the second connecting flap are respectively connected to the first contraction flap and the second contraction flap; The first contraction valve, the second contraction valve, the first connecting valve, and the second connecting valve surround each other to form the liquid channel; the side of the liquid channel with a larger cross-section is used as the liquid inlet, and the side of the liquid channel with a smaller cross-section is used as the liquid outlet.

3. The wearable breast pump as described in claim 1, characterized in that, It also includes a negative suction component; the negative suction component includes a negative suction base, suction silicone, and a plug; The negative suction base is grooved; the suction silicone covers the opening of the negative suction base; the suction silicone is located between the negative suction base and the plug; the plug presses the suction silicone onto the negative suction base; a flat negative pressure cavity is formed between the suction silicone and the negative suction base; a suction cavity is formed between the suction silicone and the plug. The negative pressure port is connected to the negative pressure chamber; the suction chamber is connected to the pipe.

4. The wearable breast pump as described in claim 1, characterized in that, The side closer to the opening is designated as the far end of the valve body, and the side farther from the opening is designated as the near end of the valve body. The cross-section of the groove gradually decreases from near to far.

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