Wearable breast pump structure

Abstract

This utility model belongs to the technical field of maternal and infant products, and particularly relates to the structure of a wearable breast pump. The wearable breast pump structure includes a shell, an adsorption plate, a one-way valve, and a main unit. The shell has an open-bottom cavity, and the adsorption plate covers the opening of the cavity, forming a milk storage chamber. The adsorption plate has a channel extending into the cavity, and a through hole on one side of the channel. A one-way valve is provided in the through hole, and the one-way valve seals the through hole in one direction. The main unit includes a control system and an air pump. The air pump is connected to the milk storage chamber, creating a negative pressure inside the milk storage chamber. The control system controls the start and stop of the air pump. The adsorption plate covers and fits against the breast. The control system starts the air pump, which expels air from the milk storage chamber to create a negative pressure. The one-way valve opens the through hole, connecting the channel to the milk storage chamber, and the negative pressure acts on the breast. The air pump continuously increases the negative pressure value in the milk storage chamber until the air pressure detection mechanism detects that the milk storage chamber has reached the target air pressure value set by the control system.

Description

Technical Field

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

[0002] A breast pump is a tool used to express breast milk that has accumulated in the mammary glands. It is generally suitable when the baby cannot suckle directly, or when the mother is separated from the baby but still wishes to breastfeed. Breast pumps typically use an electric or manual negative pressure system to apply negative pressure directly or indirectly to a breast shield or milk storage container that fits against the breast, so that the milk can be drawn into the storage container or other storage space for storage.

[0003] For example, Chinese patent CN222286056U discloses a fully enclosed breast pump, including a collection component, a liquid barrier drive, and a negative pressure component. The collection component includes a breast shield and a milk storage container. The breast shield is used to conform to the breast, and the milk storage container is used to collect milk. The breast shield and the milk storage container are connected. The liquid barrier drive is integrally formed into the collection component and is sealed to the collection component. The negative pressure component is pneumatically, mechanically, or electrically connected to the collection component and applies negative pressure to the collection component through the liquid barrier drive. The liquid barrier drive separates the breast pump into two gas-liquid separated parts. When the user uses the pump, part of the collection component is attached to the breast. The negative pressure component indirectly applies negative pressure to the collection component through the liquid barrier drive, allowing milk to be drawn from the user's breast and flow into the collection component for temporary storage. The liquid barrier drive, which is integrally formed and sealed with the collection component, can separate the breast pump into two parts with gas-liquid separation. One part is used for milk flow, and the other part is used to connect with the air passage of the negative pressure component to form negative pressure. The liquid barrier drive can prevent milk from being drawn into the air passage of the negative pressure component, preventing milk from being contaminated or causing the negative pressure component to short-circuit and fail.

[0004] The aforementioned patent document discloses a technical solution that uses a vacuum pump to drive the diaphragm to deform, creating negative pressure within the sealed space formed by the silicone flange in the breast to achieve milk suction. When the diaphragm resets, the sealed space is depressurized, and this cycle continues for sustained milk suction. To maintain continuous suction, the negative pressure pump needs to operate continuously. However, the negative pressure pump generates noise and vibration during operation, and the reciprocating motion of the diaphragm also creates continuous noise, causing discomfort to the user. Furthermore, because the diaphragm needs to constantly deform and reset during operation, the airflow generated during diaphragm reset can react against the breast, causing milk to splash onto the breast, further contributing to user discomfort. Utility Model Content

[0005] The purpose of this invention is to provide a wearable breast pump structure and control method, both of which aim to solve the problem that in the existing breast pumps, the negative pressure pump needs to work continuously during operation, and the noise and vibration caused by continuous operation can lead to user discomfort.

[0006] To achieve the above objectives, this utility model provides a wearable breast pump structure, including a shell, an adsorption plate, a one-way valve, and a main unit. The shell has an open-bottom cavity, and the adsorption plate covers the opening of the cavity, forming a milk storage chamber. The adsorption plate has a channel extending into the cavity, and a through hole is provided on one side of the channel. The one-way valve is located in the through hole and seals the through hole in one direction. The main unit includes a control system and an air pump. The air pump is connected to the milk storage chamber and is used to expel air from the milk storage chamber, creating a negative pressure within the milk storage chamber, which allows the one-way valve to open the through hole. The control system controls the start and stop of the air pump.

[0007] Furthermore, the main unit also includes a main unit housing, which is disposed on one side of the housing, and the suction pump is disposed inside the main unit housing.

[0008] Furthermore, a mounting position is provided on one side of the housing, the mounting position includes a bottom wall, and the main housing is detachably mounted on the mounting position; the bottom wall is provided with a first interface, the first interface being in communication with the cavity; a second interface is provided on one side of the main housing, the second interface being connected to the first interface, and the suction pump being connected to the second interface.

[0009] Furthermore, the first interface includes a protrusion on the bottom wall, the protrusion having a connecting end extending to the outer edge of the bottom wall, an air passage being provided inside the protrusion, one end of the air passage communicating with the cavity, and the other end passing through the connecting end;

[0010] The main housing is provided with a clearance groove, which is used to avoid the protrusion; the second interface is located in the clearance groove.

[0011] Furthermore, the inner side of the bottom wall is also provided with an anti-overflow structure, which includes a baffle plate arranged around the opening of the air passage. The two ends of the baffle plate extend towards the outer edge of the housing and form a flow channel with the outer edge side plate of the housing. The baffle plate fits against the inner side of the adsorption plate to form a buffer cavity. An extension tube extends into the buffer cavity from the opening of the air passage.

[0012] Furthermore, the side wall of the mounting position is also provided with a drain outlet, which is connected to the cavity and is detachably connected to a sealing element.

[0013] Furthermore, a connecting rib is provided inside the through hole, and the connecting rib has a connecting position; a sealing ring extends from the opening of the through hole into the milk storage chamber; the one-way valve includes a connector and an elastic diaphragm; the connector is connected to the connecting position, and the elastic diaphragm fits into the opening of the sealing ring.

[0014] Furthermore, the elastic diaphragm includes a deformable portion, a sealing portion, and an anti-backflow portion; the deformable portion extends radially outward along the outer side of the connector and is recessed into the through hole; the sealing portion is disposed on the outer ring of the deformable portion and supported on the end face of the sealing ring; the anti-backflow portion is disposed on the outer ring of the sealing portion and extends obliquely towards the end of the sealing ring closer to the channel.

[0015] Furthermore, the wall thickness of the deformable part gradually decreases in the direction of outer ring extension; the wall thickness of the anti-backflow part gradually increases in the direction of outer ring extension.

[0016] Furthermore, the adsorption plate includes a silicone shell, a supporting flange, and a supporting cylinder; the silicone shell has a funnel-shaped structure, including a funnel opening, and the supporting cylinder is located at the small end of the funnel opening and extends into the shell; the channel is located inside the supporting cylinder, and the through hole is located on one side of the supporting cylinder; the outer edge of the silicone shell is provided with a mounting ring extending in the opposite direction; the mounting ring is provided with a receiving groove, and the receiving groove extends into the funnel opening; the supporting flange is located inside the receiving groove.

[0017] Furthermore, the main unit also includes a pressure detection mechanism, which is connected to the milk storage chamber and is used to detect the negative pressure value of the milk storage chamber.

[0018] Furthermore, the main unit also includes a pressure relief valve, which is connected to the milk storage chamber and is used to eliminate the negative pressure in the milk storage chamber.

[0019] Furthermore, the main unit also includes a pressure detection mechanism, a pressure relief valve, and a four-way connector disposed within the main unit housing. The four-way connector includes a first connector, a second connector, a third connector, and a fourth connector. The first connector is connected to the milk storage chamber, the second connector is connected to the air pump, the third connector is connected to the pressure detection mechanism, and the fourth connector is connected to the pressure relief valve.

[0020] The wearable breast pump structure provided in this embodiment of the present invention has at least the following technical effects:

[0021] When using this wearable breast pump, the suction plate covers the user's breast. The control system activates the suction pump, which expels air from the milk storage chamber, creating negative pressure. Simultaneously, the one-way valve opens the passage, connecting the channel to the milk storage chamber. This negative pressure acts on the breast, drawing out milk. The drawn milk enters the milk storage chamber through the passage. During pumping, the suction pump continuously increases the negative pressure in the milk storage chamber. Once a certain negative pressure is reached, the pump stops working. Because the negative pressure in the milk storage chamber dissipates slowly, it remains in place for an extended period, with the drawn milk replenishing the negative pressure until there is no negative pressure or only a slight negative pressure, at which point the suction pump restarts. Therefore, this wearable breast pump does not require continuous vacuuming of the milk storage chamber, avoiding discomfort caused by prolonged pump operation. Furthermore, the milk enters the milk storage chamber directly, eliminating the problems of milk backflow and splashing during pressure release. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of a wearable breast pump provided in an embodiment of the present invention.

[0024] Figure 2 This is a structural diagram of the bottom side of the wearable breast pump structure provided in an embodiment of the present utility model.

[0025] Figure 3 A cross-sectional view of the structure of a wearable breast pump provided in an embodiment of this utility model.

[0026] Figure 4 This is a structural diagram of the wearable breast pump structure provided in an embodiment of the present invention, with the main unit removed.

[0027] Figure 5 A cross-sectional view of the wearable breast pump structure provided in this embodiment of the present invention, with the main unit removed.

[0028] Figure 6 This is a structural diagram of the housing of a wearable breast pump provided in an embodiment of the present invention.

[0029] Figure 7 The diagram shows the structure of the adsorption plate of the wearable breast pump provided in this embodiment of the utility model.

[0030] Figure 8 A cross-sectional view of the suction plate of the wearable breast pump structure provided in an embodiment of this utility model.

[0031] Figure 9 This is a structural diagram of the main unit of the wearable breast pump structure provided in an embodiment of the present utility model.

[0032] Figure 10 This is a diagram showing the internal structure of the main unit housing of the wearable breast pump provided in an embodiment of the present invention.

[0033] Figure 11 for Figure 8 A magnified view of a portion of the image. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0035] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0038] For details, please refer to one embodiment of the wearable breast pump of this utility model. Figure 1 and Figure 2 Wearable breast pumps can be worn anytime and anywhere, making them convenient for users.

[0039] For the wearable breast pump described in this embodiment, please refer to... Figure 3 and Figure 5 Specifically, it includes a housing 100, an adsorption plate 200, a one-way valve 300, and a main unit 400. The housing 100 has an open-bottom cavity, and the adsorption plate 200 covers the opening of the cavity, forming a milk storage cavity 101. Preferably, the adsorption plate 200 includes a silicone shell 210; the silicone shell 210 has a funnel-shaped structure, including a funnel opening 211, and the small end of the silicone shell 210 extends into the cavity, forming a channel 212. The outer edge of the silicone shell 210 has a reverse-extending mounting ring 213, which is sealed and engaged with the outer ring of the housing 100. A through hole 214 is provided on one side of the channel 212; a one-way valve 300 is provided in the through hole 214, which seals the through hole 214 in one direction and is normally closed. When a negative pressure is formed in the milk storage chamber 101 and a certain negative pressure value is reached, the one-way valve 300 is opened, so that the channel 212 is connected to the milk storage chamber 101.

[0040] The main unit 400 includes a control system (not shown in the figures) and an air pump 410. The air pump 410 is connected to the milk storage chamber 101. When the air pump 410 operates, it can expel air from the milk storage chamber 101, creating a negative pressure inside the milk storage chamber 101. Under the action of the negative pressure, the one-way valve 300 opens its through-hole. The control system is used to control the start and stop of the air pump 410. In this embodiment, the control system includes a battery and a control circuit. The structure of the battery and the control circuit is prior art and will not be described in detail in this embodiment.

[0041] In this embodiment, the wearable breast pump is used with the suction plate 200 covering the user's breast. The user operates or sets the control system to start the suction pump 410. The suction pump 410 expels air from the milk storage chamber 101, creating negative pressure. The one-way valve 300 opens the through-hole, and the channel 212 connects to the milk storage chamber 101. The negative pressure acts on the breast, drawing out milk. The drawn-out milk enters the milk storage chamber 101 through the through-hole 214. During pumping, the suction pump 410 can continuously increase the negative pressure value of the milk storage chamber 101. Once a certain negative pressure is reached, the milk storage chamber 101 can maintain a continuous negative pressure. The suction pump 410 stops working, but the negative pressure in the milk storage chamber 101 continues to act on the breast, and the drawn-out milk fills the volume in the milk storage chamber 101 until there is no negative pressure or a slight negative pressure in the milk storage chamber 101, at which point the suction pump 410 is restarted. Therefore, this wearable breast pump does not require continuous vacuuming of the milk storage chamber 101, avoiding discomfort caused to the user by prolonged operation of the suction pump 410. Furthermore, milk enters the milk storage chamber 101 directly, eliminating the problem of milk backflow and splashing during depressurization.

[0042] Furthermore, refer to Figure 2 , Figure 9 and Figure 10 The main unit 400 also includes a main unit housing 420, which is located on one side of the housing 100. The air pump 410 and the control system are located inside the main unit housing 420.

[0043] For further details, please refer to... Figure 4 , Figure 5 , Figure 9 and Figure 10 A mounting position 102 is provided on one side of the housing 100. The mounting position 102 includes a bottom wall 103, and the main housing 420 is detachably mounted on the mounting position 102. The bottom wall 103 is provided with a first interface 104, which communicates with the cavity. A second interface 421 is provided on one side of the main housing 420, which connects to the first interface 104, and the suction pump 410 is connected to the second interface 421. In this embodiment, the main unit 400 and the housing 100 are detachable, so the main unit 400 can be disassembled and the housing 100 and the suction plate 200 can be cleaned separately. When assembling the main unit 400 and the housing 100, the main housing 420 is installed on the mounting position 102, and the second interface 421 is connected to the first interface 104, so that the suction pump 410 is connected to the milk storage chamber 101. Furthermore, the mounting position 102 is provided with a slot, and the main housing 420 is provided with an elastic locking pin. When the two are combined, the elastic locking pin is engaged in the slot.

[0044] Preferably, please refer to Figure 4 and Figure 5The first interface 104 includes a protrusion 1040 disposed on the bottom wall 103. The protrusion 1040 has a connecting end 1041 extending towards the outer edge of the bottom wall 103. An air passage 1042 is provided inside the protrusion 1040. One end of the air passage 1042 communicates with the cavity, and the other end passes through the connecting end 1041. In this embodiment, the first interface 104 is disposed on the bottom wall 103 and extends outward, so that the first interface 104 is away from the milk storage cavity 101. When the air pump 410 draws air, it can prevent milk in the milk storage cavity 101 from entering the air passage 1042.

[0045] Reference Figure 9 The main housing 420 is provided with a clearance groove 422, which is used to avoid the protrusion 1040; and the second interface 421 is provided in the clearance groove 422. Specifically, when the main housing 420 is installed in the mounting position 102, the protrusion 1040 is inserted into the clearance groove 422, and the connecting end 1041 is inserted into the second interface 421.

[0046] To further prevent milk from leaking out of the airway 1042, this embodiment also includes an anti-overflow structure 110 on the inner side of the bottom wall 103. Please refer to [the relevant documentation] for details. Figure 5 and Figure 6 The anti-overflow structure 110 includes a baffle plate 111 surrounding the opening of the air passage 1042. Both ends of the baffle plate 111 extend towards the outer edge of the housing 100, forming a flow channel 112 with the outer edge side plate of the housing 100. The baffle plate fits against the inner side of the suction plate 200 to form a buffer cavity 113. An extension tube 1043 extends from the opening of the air passage 1042 into the buffer cavity 113. In this embodiment, when the suction pump 410 expels air from the milk storage chamber 101, the air in the milk storage chamber 101 enters the buffer cavity 101 through the flow channel 112 and is then discharged through the extension tube 1043. During the venting process, even if milk enters the buffer cavity 113 along with the airflow, the milk will accumulate in the buffer cavity 113. Furthermore, the extension tube 1043, extending into the buffer cavity 113, is suspended, effectively preventing milk from entering the extension tube 1043 and preventing the milk from being discharged by the suction pump 410.

[0047] Furthermore, referring to Figure 3 and Figure 5 The side wall of the mounting position 102 is also provided with a discharge port 120, which communicates with the cavity and is equipped with a sealing element 423. Separating the sealing element 423 from the discharge port 120 allows the milk in the milk storage cavity 101 to be poured out. Specifically, the sealing element 423 is located on one side 3 of the main housing 420. Specifically, the sealing element 423 can be a silicone plug. In this embodiment, when the main unit 400 is mounted in position 102, the second interface 421 is connected to the first interface 104, and the sealing element 423 seals the discharge port 104 to prevent pressure leakage from the discharge port 104.

[0048] This embodiment provides an example of a one-way valve 300 with a one-way sealing through-hole 214. Please refer to [the relevant documentation]. Figure 3 , Figure 5 Figure 7 and Figure 8 Specifically, a connecting rib 215 is provided inside the through hole 214. The connecting rib 215 has a cross structure and a connecting position 216. A sealing ring 217 extends from the opening of the through hole 214 into the milk storage chamber 101. The sealing ring 217 seals against the one-way valve 300, thus sealing the through hole 214. Specifically, the one-way valve 300 includes a connector 310 and an elastic diaphragm 320. The connector 310 is connected to the connecting position 216. In this embodiment, the connector 310 and the connecting position 216 are detachable. Specifically, the connecting position 216 has a connecting hole, the connector 310 is mushroom-shaped, and the head of the connector 310 passes through the connecting hole and is limited to the other side of the connecting position 216. To facilitate the assembly of the one-way valve 300 and the connecting rib 215, a handle 330 is provided on one side of the elastic diaphragm 320, which facilitates the disassembly and assembly of the connector 310. The elastic diaphragm 320 fits into the opening of the sealing ring 217; specifically, the elastic diaphragm 320 extends outward along the outer edge of the connector 310. When the air in the milk storage chamber 101 is expelled by the suction pump 410, the air pressure in the milk storage chamber 101 is lower than the air pressure in the channel 212. The elastic diaphragm 320 is pushed open by the air pressure in the channel 212, forming a communication structure between the channel 212 and the milk storage chamber 101. Under the continuous negative pressure in the milk storage chamber 101, the elastic diaphragm 320 remains open. When the milk volume in the milk storage chamber 101 reaches the position of the elastic diaphragm 320, the pressure of the milk acts on the elastic diaphragm 320, causing the elastic diaphragm 320 to close the sealing ring 217 and prevent milk backflow.

[0049] To further facilitate the opening of the elastic diaphragm 320 and the sealing of the through hole 214, the elastic diaphragm 320 of this embodiment includes a deformable portion 321, a sealing portion 322, and an anti-backflow portion 323. See details... Figure 7 and Figure 8The deformable portion 321 extends radially outward along the outer side of the connector 310. The deformable portion 321 is recessed into the through hole 214, giving it a spherical structure. Therefore, when the elastic diaphragm 320 opens, it deforms along the inner spherical direction of the deformable portion 321, making it easier to elastically deform and open the through hole 214. The sealing portion 322 is located on the outer ring of the deformable portion 321 and is supported on the end face of the sealing ring 217. The anti-backflow portion 323 is located on the outer ring of the sealing portion 322, and extends obliquely towards the end of the sealing ring 217 closer to the channel 212. In this embodiment, when the milk volume in the milk storage chamber 101 reaches the position of the one-way valve 300, the milk surface acts on the bottom side of the elastic diaphragm 320, allowing the elastic diaphragm 320 to close the through hole. Furthermore, when the milk surface acts on the bottom side of the anti-backflow part 323, the anti-backflow part 323 bends and deforms outwards towards the sealing ring 217, wrapping around the sealing ring 217. This prevents milk from entering the space formed by the anti-backflow part 323 and the outer ring of the sealing ring 217, causing the elastic diaphragm 320 to deform downwards and open the through hole. This enhances the one-way sealing effect of the one-way valve 300, preventing milk backflow in the milk storage chamber 101.

[0050] Furthermore, refer to Figure 11 The wall thickness of the deformable portion 321 gradually decreases towards the outer ring. Therefore, the deformable portion 321 is easier to deform closer to the outer ring and less prone to deformation closer to the inner ring, avoiding stress and cracking at the root of the connection between the deformable portion 321 and the connector 310. The wall thickness of the anti-backflow portion 321 gradually increases towards the outer ring. Specifically, the cross-section of the anti-backflow portion 321 is teardrop-shaped. Therefore, when the anti-backflow portion 321 is subjected to the force of the liquid surface, it is easier to deform along the position of the sealing portion 322, so that the sealing portion 322 fits the sealing ring 217 better.

[0051] Furthermore, refer to Figure 5 and Figure 8 The adsorption plate 200 also includes a support flange 220 and a support cylinder 230. The mounting ring 213 of the silicone shell 210 has a receiving groove that extends towards the flared opening; the support flange 220 is located within the receiving groove. A retaining groove is also provided at the smaller end of the flared opening, into which the open end of the support cylinder 230 engages. A channel 212 is located within the support cylinder 230, and a through hole 214 is located on the bottom side of the support cylinder 230.

[0052] Specifically, both the support flange 220 and the support cylinder 230 are rigid plastic structural components, which can be connected to the silicone shell 210 as a whole through a rubber coating process. The support flange 220 and support cylinder 230 increase the strength and support effect of the silicone shell 210, effectively preventing deformation of the silicone shell 210 when air is expelled from the milk storage chamber 101, thus avoiding the one-way valve 300 closing when the silicone shell 210 elastically resets. Furthermore, the support flange 220 facilitates the assembly of the silicone shell 210 with the housing 100.

[0053] Furthermore, refer to Figure 10 The main unit 400 also includes a pressure detection mechanism 430, which is connected to the milk storage chamber 101 and is used to detect the negative pressure value of the milk storage chamber 101. Specifically, the pressure detection mechanism 430 is a pressure sensor installed inside the main unit housing 420. The pressure sensor detects the pressure inside the milk storage chamber 101 and feeds it back to the control system, which then starts and stops the suction pump 410 based on the pressure value.

[0054] Furthermore, the main unit 400 also includes a pressure relief valve 440, which is connected to the milk storage chamber 101 and is used to eliminate the negative pressure in the milk storage chamber 101. When the air pump is not in use, the negative pressure in the milk storage chamber 101 can be released through the pressure relief valve 440.

[0055] Furthermore, the main unit 400 also includes a four-way connector 450, which includes a first connector 451, a second connector 452, a third connector 453, and a fourth connector 454. The first connector 451 is connected to the milk storage chamber 101, the second connector 452 is connected to the air pump 410, the third connector 453 is connected to the air pressure detection mechanism 430, and the fourth connector 454 is connected to the pressure relief valve 440.

[0056] Specifically, in the control method of the breast pump described in the above embodiment, the silicone shell 210 of the suction plate 200 covers and conforms to the breast. The control system starts the suction pump 410, which extracts air from the milk storage chamber 101, creating a negative pressure inside. Under the action of the negative pressure, the one-way valve 300 opens the through hole 213, and the channel 212 connects with the milk storage chamber 101, allowing the negative pressure to act directly on the breast, thus sucking out milk. During this process, the suction pump 410 continuously increases the negative pressure value in the milk storage chamber 101 until the air pressure detection mechanism 430 detects that the milk storage chamber 101 has reached the target air pressure value set by the control system, at which point the suction pump 410 stops working. Because the air in the milk storage chamber 101 is expelled, and the milk cannot quickly replenish the volume in the milk storage chamber 101, the milk storage chamber 101 will remain in a negative pressure state for a long time, thus achieving continuous milk suction, and the suction pump 410 does not need to work continuously for an extended period.

[0057] Furthermore, the control system sets the minimum and maximum negative pressure values ​​in the milk storage chamber 101; the air pressure detection mechanism 430 detects that the negative pressure value in the milk storage chamber 101 has reached the minimum negative pressure value, and the control system controls the air suction pump 410 to start until the air pressure detection mechanism detects that the negative pressure value in the milk storage chamber 101 has reached the set maximum negative pressure value.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wearable breast pump structure, characterized in that, The device includes a housing, an adsorption plate, a one-way valve, and a main unit. The housing has an open-bottom cavity, and the adsorption plate covers the opening of the cavity, forming a milk storage chamber. The adsorption plate has a channel extending into the cavity, and one side of the channel has a through hole. The one-way valve is located in the through hole and seals the through hole in one direction. The main unit includes a control system and an air pump. The air pump is connected to the milk storage chamber and is used to expel air from the milk storage chamber, creating a negative pressure within the milk storage chamber, which causes the one-way valve to open the through hole. The control system controls the start and stop of the air pump.

2. The wearable breast pump structure of claim 1, wherein: The main unit also includes a main unit housing, which is located on one side of the housing, and the suction pump is located inside the main unit housing.

3. The wearable breast pump structure of claim 2, wherein: A mounting position is provided on one side of the housing, the mounting position includes a bottom wall, and the main housing is detachably mounted on the mounting position; the bottom wall is provided with a first interface, the first interface is connected to the cavity; a second interface is provided on one side of the main housing, the second interface is connected to the first interface, and the suction pump is connected to the second interface.

4. The wearable breast pump structure of claim 3, wherein: The first interface includes a protrusion on the bottom wall, the protrusion having a connecting end extending to the outer edge of the bottom wall, and an air passage provided inside the protrusion, one end of the air passage communicating with the cavity and the other end passing through the connecting end; The main housing is provided with a clearance groove, which is used to avoid the protrusion; the second interface is located in the clearance groove.

5. The wearable breast pump structure of claim 4, wherein: The inner side of the bottom wall is also provided with an anti-overflow structure, which includes a baffle plate arranged around the opening of the air passage. The two ends of the baffle plate extend toward the outer edge of the housing and form a flow channel with the outer edge side plate of the housing. The baffle plate fits against the inner side of the adsorption plate to form a buffer cavity. An extension tube extends into the buffer cavity from the opening of the air passage.

6. The wearable breast pump structure of claim 3, wherein: The side wall of the mounting position is also provided with a drain outlet, which is connected to the cavity and is detachably connected to a sealing element.

7. The wearable breast pump structure of claim 1, wherein: A connecting rib is provided inside the through hole, and the connecting rib has a connecting position; a sealing ring extends from the opening of the through hole into the milk storage chamber; the one-way valve includes a connector and an elastic diaphragm; the connector is connected to the connecting position, and the elastic diaphragm fits into the opening of the sealing ring.

8. The wearable breast pump structure of claim 7, wherein: The elastic diaphragm includes a deformable portion, a sealing portion, and an anti-backflow portion; the deformable portion extends radially along the outer side of the connector and is recessed into the through hole; the sealing portion is disposed on the outer ring of the deformable portion and supported on the end face of the sealing ring; the anti-backflow portion is disposed on the outer ring of the sealing portion and extends obliquely towards the end of the sealing ring closer to the channel.

9. The wearable breast pump structure of claim 8, wherein: The wall thickness of the deformable part gradually decreases in the direction of the outer ring; the wall thickness of the anti-backflow part gradually increases in the direction of the outer ring.

10. The wearable breast pump structure of claim 1, wherein: The adsorption plate includes a silicone shell, a supporting flange, and a supporting cylinder; the silicone shell has a funnel-shaped structure, including a funnel opening, and the supporting cylinder is located at the small end of the funnel opening and extends into the shell; the channel is located inside the supporting cylinder, and the through hole is located on one side of the supporting cylinder; the outer edge of the silicone shell is provided with a mounting ring extending in the opposite direction; the mounting ring is provided with a receiving groove, and the receiving groove extends into the funnel opening; the supporting flange is located inside the receiving groove.

11. The wearable breast pump structure according to any one of claims 1 to 10, wherein: The main unit also includes a pressure detection mechanism, which is connected to the milk storage chamber and is used to detect the negative pressure value of the milk storage chamber.

12. The wearable breast pump structure according to any one of claims 1 to 10, wherein: The main unit also includes a pressure relief valve, which is connected to the milk storage chamber and is used to eliminate the negative pressure in the milk storage chamber.

13. The wearable breast pump structure of any one of claims 2 to 6, wherein: The main unit also includes a pressure detection mechanism, a pressure relief valve, and a four-way connector disposed within the main unit housing. The four-way connector includes a first connector, a second connector, a third connector, and a fourth connector. The first connector is connected to the milk storage chamber, the second connector is connected to the air pump, the third connector is connected to the pressure detection mechanism, and the fourth connector is connected to the pressure relief valve.

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