Breast pump

Abstract

The utility model discloses a kind of breast pumps, it is related to breast pump negative pressure structure design technical field, wherein, breast pump includes milk bowl, breast shield, negative pressure piece and connecting piece, the milk bowl is equipped with containing cavity, and the containing cavity is used to store breast milk;The breast shield is equipped with breast passage;The negative pressure piece is under the user pressing state and forms negative pressure by compressed air;The connecting piece is used to constitute at least two independent gas passages;One gas passage is used to conduct the negative pressure generated by negative pressure piece to the containing cavity, another gas passage is used to guide the negative pressure of the containing cavity to the breast passage, to drive milk from the breast shield to the containing cavity of the milk bowl flow direction.The technical scheme provided by the utility model can solve the problem that milk mixes air to generate air bubbles in the process of flowing into feeding bottle when using traditional manual breast pump, which is not conducive to infant feeding.

Description

Technical Field

[0001] This utility model relates to the technical field of negative pressure structure design for breast pumps, and in particular to a breast pump. Background Technology

[0002] A breast pump is a tool used to express breast milk accumulated in the mammary glands. In a home setting, it provides a convenient way for breastfeeding mothers to express milk, especially when they need to temporarily leave their babies or need to pump at night. For working mothers, manual breast pumps can be conveniently used at the workplace, helping them express milk during work breaks and maintain breastfeeding. Due to their portability, they are suitable for use while traveling or out and about, ensuring mothers can easily express milk and maintain their milk supply anywhere. Breast pumps come in manual and electric versions; in situations where there is no power supply or other electric breast pumps are unavailable, a manual breast pump can serve as a reliable emergency tool.

[0003] Traditional manual breast pumps create negative pressure in the milk channel by pressing the handle, which causes air bubbles to mix with the milk as it flows into the bottle, making it difficult to feed the baby. Utility Model Content

[0004] The main purpose of this invention is to provide a breast pump that solves the problem that when using a traditional manual breast pump, milk mixes with air and produces bubbles as it flows into the bottle, which is not conducive to infant feeding.

[0005] To achieve the above objectives, the present invention proposes a breast pump comprising a milk bowl, a breast shield, a negative pressure component with a self-recovering cavity wall and an inner cavity, and a connector. The milk bowl has a receiving cavity for storing breast milk; the breast shield has a breast pumping channel; the negative pressure component generates negative pressure through the self-recovering displacement of the cavity wall after the user applies pressure to it to expel gas from the inner cavity; the connector forms at least two independent gas channels; one gas channel transmits the negative pressure generated by the negative pressure component to the receiving cavity, and the other gas channel guides the negative pressure in the receiving cavity to the breast pumping channel, thereby driving milk to flow from the breast shield to the receiving cavity of the milk bowl.

[0006] In one embodiment, the gas channels of the connector are a first channel and a second channel, the negative pressure component and the milk bowl are respectively connected to the two ends of the first channel, and the milk suction channel and the milk bowl are respectively connected to the two ends of the second channel.

[0007] In one embodiment, the breast pump includes a duckbill valve connected to the connector and located at the junction of the first channel and the second channel. The duckbill valve is used to allow fluid to flow unidirectionally from the second channel to the first channel.

[0008] In one embodiment, the negative pressure component has a negative pressure chamber that communicates with the first channel; the breast pump includes a one-way valve that is connected to the connector and is used to allow fluid to flow unidirectionally from the first channel to the outside.

[0009] In one embodiment, the connector has a first opening, a second opening, a third opening, and a fourth opening; wherein the first opening connects the breast pumping channel and the second channel, the second opening connects the receiving cavity and the first channel, the third opening connects the negative pressure cavity and the first channel, and the fourth opening connects the negative pressure cavity and the outside.

[0010] In one embodiment, the connector has a protruding flow-blocking portion, which together with the connector forms a flow-blocking channel, and the flow-blocking channel connects the negative pressure chamber and the first channel.

[0011] In one embodiment, the negative pressure member has a springback auxiliary portion that extends along the inner wall of the negative pressure member and enables the negative pressure member to spring back.

[0012] In one embodiment, the negative pressure component is made of silicone.

[0013] In one embodiment, the negative pressure member is located at the end of the connector away from the breast shield.

[0014] In one embodiment, the negative pressure member has a connecting portion and a pressing portion. The connecting portion has a silicone layer and a hard adhesive layer connected together. The silicone layer is sleeved on the hard adhesive layer and is connected to the pressing portion.

[0015] In one embodiment, a sealing element is provided between the connecting portion and the connecting member, and the sealing element is sleeved on the connecting portion.

[0016] This utility model also proposes a breast pump, including a milk bowl, a breast shield, a negative pressure component with a self-recovering cavity wall and an inner cavity, and a connector; the milk bowl is provided with a receiving cavity for storing breast milk; the breast shield has a breast pumping channel; after the user applies pressure to the negative pressure component to expel the gas in the inner cavity, the negative pressure component generates negative pressure through the recovery displacement of the self-recovering cavity wall; the connector is constructed with a first gas channel, which is used to transmit the negative pressure generated by the negative pressure component to the receiving cavity.

[0017] In one embodiment, the breast pump is equipped with a duckbill valve, which is connected to the connector, and the milk suction channel communicates with the receiving cavity through the duckbill valve.

[0018] This invention effectively solves the problem of air bubbles generated when milk mixes with air in traditional manual breast pumps through structural improvements. The milk bowl's receiving cavity stores breast milk, while the breast shield's suction channel contacts the breast and guides milk into the milk bowl. A negative pressure component (such as an elastic air bladder) generates negative pressure through a pressing action. The connector is a key structure of this invention, containing at least two independent gas channels. One gas channel connects the negative pressure component and the milk bowl's receiving cavity, transmitting the negative pressure generated by the component to the milk bowl; the other gas channel connects the milk bowl's receiving cavity and the breast shield's suction channel, further transmitting the negative pressure within the milk bowl's receiving cavity to the suction channel, thereby driving milk to flow from the breast shield to the milk bowl's receiving cavity. For example, the connector can be designed as a pipe with two independent channels, each connected to the negative pressure component, milk bowl, and breast shield respectively via a sealed interface, ensuring precise transmission of negative pressure. By setting up an independent gas channel, the problem of air bubbles mixing into breast milk caused by inaccurate negative pressure transmission in traditional breast pumps is effectively avoided. This makes the breast milk purer as it flows into the milk bowl, reduces the generation of air bubbles, and thus improves the quality of breast milk, which is more conducive to the healthy feeding of infants. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the breast pump provided by this utility model;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 A schematic diagram of an embodiment of the airflow direction of the breast pump provided by this utility model;

[0023] Figure 4 A schematic diagram of an embodiment of the connector and duckbill valve provided by this utility model.

[0024] Explanation of icon numbers:

[0025] 100. Breast pump; 1. Milk bowl; 1a. Receiving cavity; 2. Connector; 3. Breast shield; 3a. Breast pumping channel; 4. Negative pressure component; 5. Duckbill valve; 2a. Second channel; 2b. First channel; 4a. Negative pressure cavity; 6. One-way valve; 2c. First opening; 2d. Second opening; 2e. Third opening; 2f. Fourth opening; 21. Flow-blocking part; 2g. Flow-blocking channel; 41. Rebound auxiliary part; 42. Connecting part; 43. Pressing part; 7. Sealing component.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a breast pump 100.

[0031] Please see Figure 1In one embodiment of this utility model, the breast pump 100 includes a milk bowl 1, a breast shield 3, a negative pressure member 4 with a self-recovering cavity wall and an inner cavity, and a connector 2. The milk bowl 1 has a receiving cavity 1a for storing breast milk; the breast shield 3 has a breast pumping channel 3a; after the user applies pressure to the negative pressure member 4 to expel the gas in the inner cavity, the negative pressure member 4 generates negative pressure through the recovery displacement of the self-recovering cavity wall; the connector 2 is used to form at least two independent gas channels; one gas channel is used to conduct the negative pressure generated by the negative pressure member 4 to the receiving cavity 1a, and the other gas channel is used to guide the negative pressure of the receiving cavity 1a to the breast pumping channel 3a, so as to drive the milk from the breast shield 3 to the receiving cavity 1a of the milk bowl 1.

[0032] In this embodiment, the receiving cavity 1a of the milk bowl 1 is connected to the negative pressure component 4 via the connector 2, forming an independent gas channel for transmitting negative pressure. The milk bowl 1 can be a cylindrical or bowl-shaped container for easy gripping by the user. The material of the milk bowl 1 is generally glass or PP (polypropylene), which are safe, non-toxic, easy to clean, and durable. When the user presses the negative pressure component 4, the gas in the inner cavity is expelled, and negative pressure is generated by the self-restoring displacement of the cavity wall and transmitted to the receiving cavity 1a of the milk bowl 1 through this channel. At the same time, another independent gas channel in the connector 2 further transmits the negative pressure in the receiving cavity 1a to the breast suction channel 3a of the breast shield 3. The breast shield 3 fits tightly against the breast, and the negative pressure acts on the breast tissue, causing milk to be sucked into the breast suction channel 3a and finally flow into the receiving cavity 1a of the milk bowl 1 for storage. For example, the negative pressure component 4 can be designed as a pressable silicone airbag with a one-way valve 6 inside to ensure that air can only flow in one direction, thereby forming a stable negative pressure when pressed. Connector 2 can adopt a branched pipe structure to ensure that the two gas channels do not interfere with each other and achieve precise transmission of negative pressure.

[0033] This new breast pump 100, by incorporating two independent air channels, effectively avoids the problem of air bubbles generated when milk mixes with air, as seen in traditional breast pumps 100. This ensures the purity and quality of breast milk, which is more conducive to healthy infant feeding. Secondly, this design improves pumping efficiency, with more stable and even negative pressure transmission, better mimicking the rhythm of an infant's sucking and reducing discomfort for the mother. For example, in actual use, compared to a traditional manual breast pump 100, this new breast pump 100 can express more breast milk in the same amount of time, and the milk contains almost no air bubbles, significantly improving the user experience. Furthermore, its simple structure, portability, and ease of cleaning make it particularly suitable for breastfeeding mothers to use at home, in the workplace, or while traveling.

[0034] In one embodiment of this utility model, please refer to Figure 1The gas channels of the connector 2 are the first channel 2b and the second channel 2a, respectively. The negative pressure component 4 and the milk bowl 1 are respectively connected to the two ends of the first channel 2b, and the milk suction channel 3a and the milk bowl 1 are respectively connected to the two ends of the second channel 2a.

[0035] In one embodiment, the two gas channels of the connector 2 are a first channel 2b and a second channel 2a, respectively, and their structural design ensures precise transmission of negative pressure. Specifically, the negative pressure component 4 is connected to the milk bowl 1 through the first channel 2b. When the user presses the negative pressure component 4, the generated negative pressure is transmitted to the receiving cavity 1a of the milk bowl 1 through the first channel 2b. At the same time, the second channel 2a connects the receiving cavity 1a of the milk bowl 1 and the milk suction channel 3a of the breast pump shield 3, further transmitting the negative pressure in the receiving cavity 1a to the milk suction channel 3a, thereby driving milk to flow from the breast pump shield 3 to the milk bowl 1. For example, the connector 2 can adopt a branched pipe structure, with the first channel 2b and the second channel 2a being independent of each other at the pipe branching point and not interfering with each other. The negative pressure component 4 can be a pressable silicone air bladder with a one-way valve 6 inside to ensure that air can only flow in one direction, thereby forming a stable negative pressure when pressed. The receiving cavity 1a of the milk bowl 1 can be designed as a transparent plastic container for easy observation of the amount of breast milk stored. The breast shield 3 can be made of soft silicone material to conform to the shape of the breast, improving the comfort and efficiency of breast pumping.

[0036] The independent design of the first channel 2b and the second channel 2a avoids the problem of air bubbles generated when milk mixes with air in traditional breast pumps 100, ensuring the purity and quality of breast milk and promoting healthier infant feeding. Secondly, this structure makes the transmission of negative pressure more stable and uniform, better simulating the rhythm of infant sucking and reducing discomfort for the mother. For example, in actual use, compared to a traditional manual breast pump 100, this new breast pump 100 can express more breast milk in the same amount of time, and the milk contains almost no air bubbles. Furthermore, its simple structure, portability, and ease of cleaning make it particularly suitable for breastfeeding mothers to use at home, at work, or while traveling. For example, for working mothers, this design allows for quick and efficient breast pumping during work breaks while maintaining breast milk quality, providing great convenience for breastfeeding.

[0037] In one embodiment of this utility model, please refer to Figure 1 and Figure 3 The breast pump 100 includes a duckbill valve 5, which is connected to the connector 2. The duckbill valve 5 is located at the connection between the first channel 2b and the second channel 2a. The duckbill valve 5 is used to allow fluid to flow unidirectionally from the second channel 2a to the first channel 2b.

[0038] In one embodiment, the duckbill valve 5 is a key component of the connector 2, and its installation position is located at the connection between the first channel 2b and the second channel 2a. The structural design of the duckbill valve 5 ensures that fluid (such as air or breast milk) can only flow from the second channel 2a to the first channel 2b, and cannot flow in the opposite direction. Specifically, the duckbill valve 5 is made of an elastic material, such as silicone or rubber, and its internal channel is shaped like a duckbill. When the fluid pressure in the second channel 2a is greater than that in the first channel 2b, the opening of the duckbill valve 5 automatically opens, allowing the fluid to pass smoothly; while when the pressure in the first channel 2b is greater than that in the second channel 2a, the opening of the duckbill valve 5 automatically closes, preventing the fluid from flowing in the opposite direction. For example, during breast pumping, when the negative pressure in the breast pump shield 3 is conducted through the second channel 2a to the receiving cavity 1a of the milk bowl 1, the duckbill valve 5 opens, allowing the negative pressure to be conducted smoothly; while when the negative pressure in the milk bowl 1 attempts to be conducted in the opposite direction, the duckbill valve 5 closes, preventing reverse flow. This design ensures unidirectional transmission of negative pressure, improving the efficiency and stability of the breast pump 100. The one-way flow function of the duckbill valve 5 effectively prevents the reverse transmission of negative pressure, avoiding potential air pressure fluctuations during breast pumping, thereby improving the stability and efficiency of pumping. For example, even if the mother pauses briefly while pressing the negative pressure component 4, the duckbill valve 5 ensures that the negative pressure will not leak back, guaranteeing the continuity of the pumping process. Secondly, the design of the duckbill valve 5 further reduces the mixing of breast milk and air, lowering the possibility of air bubbles forming in the milk, ensuring the purity of the breast milk, and is more conducive to healthy infant feeding.

[0039] In one embodiment of this utility model, please refer to Figure 1 and Figure 3 The negative pressure component 4 has a negative pressure chamber 4a, which is connected to the first channel 2b; the breast pump 100 includes a one-way valve 6, which is connected to the connector 2. The one-way valve 6 is used to allow fluid to flow unidirectionally from the first channel 2b to the outside.

[0040] In one embodiment, the negative pressure component 4 is designed with a negative pressure chamber 4a, which is connected to the first channel 2b of the connector 2. The breast pump 100 also includes a one-way valve 6, which is connected to the connector 2 to ensure that fluid can only flow unidirectionally from the first channel 2b to the outside. Specifically, the negative pressure component 4 can be made of flexible silicone. By pressing the negative pressure component 4, negative pressure is generated, causing the air in the negative pressure chamber 4a and the first channel 2b to be discharged from the one-way valve 6, thereby forming negative pressure in the first channel 2b. The negative pressure component 4 can be designed as a compressible silicone ball. When the user presses the ball, the air inside the ball is discharged through the channel connected to the first channel 2b, forming negative pressure. The one-way valve 6 can be made of plastic or silicone and is installed on the connector 2. Its structure is designed as a rubber diaphragm with a spring. When negative pressure is formed, the rubber diaphragm is pushed open to allow air to be discharged; when there is no negative pressure, the spring resets the rubber diaphragm, closing the channel and preventing air backflow. This design ensures the stable formation and maintenance of negative pressure while preventing air backflow into the milk bowl 1, thus guaranteeing the purity of the milk. This invention significantly improves the performance and safety of the breast pump 100 by incorporating a negative pressure chamber 4a within the negative pressure component 4 and equipping it with a one-way valve 6. The design of the negative pressure chamber 4a makes the formation of negative pressure more stable and efficient. By pressing the negative pressure component 4, the user can easily generate and maintain negative pressure within the first channel 2b, effectively promoting the inflow of milk. The one-way valve 6 effectively expels air from the first channel 2b and prevents air backflow into the milk bowl 1, avoiding the mixing of milk and air to create bubbles, ensuring the purity of the milk, and benefiting the healthy feeding of the infant.

[0041] In one embodiment of this utility model, please refer to Figure 3 and Figure 4 The connector 2 has a first opening 2c, a second opening 2d, a third opening 2e, and a fourth opening 2f; wherein, the first opening 2c connects the milk suction channel 3a and the second channel 2a, the second opening 2d connects the receiving cavity 1a and the first channel 2b, the third opening 2e connects the negative pressure cavity 4a and the first channel 2b, and the fourth opening 2f connects the negative pressure cavity 4a and the outside.

[0042] In this embodiment, the connector 2 is designed with four openings: a first opening 2c, a second opening 2d, a third opening 2e, and a fourth opening 2f. The first opening 2c connects to the milk suction channel 3a and the second channel 2a, ensuring that milk can flow smoothly from the milk suction shield 3 into the second channel 2a. The second opening 2d connects to the receiving cavity 1a and the first channel 2b, allowing milk to flow unidirectionally from the second channel 2a into the receiving cavity 1a through the duckbill valve 5. The third opening 2e connects to the negative pressure cavity 4a and the first channel 2b, used to create negative pressure when the negative pressure component 4 is pressed, promoting milk flow. The fourth opening 2f connects the negative pressure cavity 4a to the outside, controlling the unidirectional discharge of air through the one-way valve 6. The connector 2 can be made of plastic and manufactured using injection molding to ensure the precise position and size of the four openings. The negative pressure chamber 4a of the negative pressure component 4 is connected to the first channel 2b through the third opening 2e. When the negative pressure component 4 is pressed, air in the negative pressure chamber 4a enters the outside through the fourth opening 2f. Due to the outflow of air, negative pressure is formed in the first channel 2b and the receiving chamber 1a. This negative pressure is then generated in the second channel 2a and the milk-feeding channel 3a through the one-way flow effect of the duckbill valve 5, promoting milk flow to the receiving chamber 1a. This design optimizes the milk flow path, ensuring that milk can flow smoothly from the breast shield 3 into the receiving chamber 1a, reducing resistance and air bubble formation during milk flow. The third opening 2e and the fourth opening 2f make the formation and maintenance of negative pressure more stable, improving milk-feeding efficiency. Users can easily create negative pressure in the negative pressure chamber 4a by pressing the negative pressure component 4, which is then transmitted to the first channel 2b through the third opening 2e, promoting milk flow into the receiving chamber 1a.

[0043] In one embodiment of this utility model, please refer to Figure 4 The connector 2 has a flow-blocking part 21 protruding from it. The flow-blocking part 21 and the connector 2 enclose a flow-blocking channel 2g, which connects the negative pressure chamber 4a and the first channel 2b.

[0044] In one embodiment, the connector 2 has a protruding flow-blocking portion 21, which, together with the connector 2, forms a flow-blocking channel 2g. This flow-blocking channel 2g connects the negative pressure chamber 4a and the first channel 2b. Specifically, the connector 2 can be made of plastic or silicone and manufactured through injection molding or molding processes. The flow-blocking portion 21 can be designed as an annular protrusion located inside the connector 2, forming a narrow flow-blocking channel 2g together with the inner wall of the connector 2. The diameter of this channel can be designed to be 1-2 mm to ensure effective transmission of negative pressure while preventing milk backflow. In actual use, when the negative pressure component 4 generates negative pressure, the negative pressure is transmitted to the first channel 2b through the flow-blocking channel 2g, promoting milk flow into the receiving chamber 1a. This design not only optimizes the transmission path of negative pressure but also effectively prevents milk backflow, improving the sealing and reliability of the breast pump 100. The design of the flow-blocking channel 2g optimizes the negative pressure transmission path, ensuring that the negative pressure can be stably and efficiently transmitted from the negative pressure chamber 4a to the first channel 2b, thereby promoting the smooth flow of milk. The flow-blocking part 21 effectively prevents milk backflow, avoiding the generation of air bubbles during milk mixing with air during pumping, ensuring milk purity, and benefiting healthy infant feeding. In practical use, the flow-blocking channel 2g ensures that the negative pressure will not fail due to milk backflow during transmission, improving pumping efficiency.

[0045] In one embodiment of this utility model, please refer to Figure 1 and Figure 2 The negative pressure component 4 is provided with a springback auxiliary part 41, which extends along the inner wall of the negative pressure component 4 and enables the negative pressure component 4 to spring back.

[0046] In this embodiment, the negative pressure component 4 is provided with a rebound auxiliary part 41, which extends along the inner wall of the negative pressure component 4. Specifically, the negative pressure component 4 is usually made of flexible materials such as silicone or rubber. These materials themselves have a certain degree of elasticity, but their rebound performance can be further enhanced by designing the rebound auxiliary part 41. For example, the rebound auxiliary part 41 can be designed as a spiral or wave-shaped structure extending along the inner wall of the negative pressure component 4, similar to the shape of a spring. When the negative pressure component 4 is pressed, these structures can store elastic potential energy and quickly return to their original shape when the pressure is released, helping the negative pressure component 4 to rebound quickly. In practical applications, this design can ensure that the negative pressure component 4 can quickly return to its initial state after each press, thereby continuously and effectively generating negative pressure. For example, the negative pressure component 4 can be a compressible silicone sphere with a spiral rebound auxiliary part 41 inside. When the user presses the sphere, the spiral structure is compressed and stores energy. After releasing the hand, these structures quickly release the energy, causing the sphere to return to its original shape, ensuring the continuous generation of negative pressure. The design of the springback assist 41 enhances the elasticity of the negative pressure component 4, allowing it to quickly return to its original shape after each press, thus continuously and effectively generating negative pressure. This design extends the service life of the negative pressure component 4 because the springback assist 41 can evenly distribute pressure, reducing material fatigue and deformation. In practical use, the negative pressure component 4 with the springback assist 41 can maintain good performance even after multiple presses, reducing the problem of insufficient negative pressure caused by material aging.

[0047] In one embodiment of this utility model, please refer to Figure 1 The negative pressure component 4 is made of silicone.

[0048] In one embodiment, the negative pressure component 4 is made of silicone, a material with excellent elasticity and flexibility, ensuring that the negative pressure component 4 maintains good performance during pressing and releasing. Specifically, the negative pressure component 4 can be designed as a compressible silicone sphere or cylinder, and its internal structure can include one or more negative pressure chambers 4a. For example, the negative pressure component 4 can be designed as a silicone sphere with a negative pressure chamber 4a inside. By pressing the sphere, the air in the negative pressure chamber 4a is expelled, forming negative pressure. To enhance the rebound performance, a spiral or wave-shaped rebound auxiliary part 41 can be provided inside the negative pressure component 4. These structures can help the negative pressure component 4 quickly return to its original shape after the pressure is released. In addition, the silicone negative pressure component 4 can also be manufactured by injection molding to ensure the accuracy of its shape and size, while ensuring its smooth surface for easy cleaning and disinfection.

[0049] In one embodiment of this utility model, please refer to Figure 1 The negative pressure component 4 is located at the end of the connector 2 away from the breast shield 3.

[0050] In this embodiment, the negative pressure component 4 is cleverly positioned at the end of the connector 2 furthest from the breast shield 3. This arrangement ensures that the negative pressure component 4 does not interfere with the fit between the breast shield 3 and the breast during operation, while also allowing the user to easily hold the breast pump 100 with one hand and press the negative pressure component 4, ensuring stability and comfort during the pumping process. Placing the negative pressure component 4 at the end of the connector 2 furthest from the breast shield 3 significantly improves the user experience and performance of the breast pump 100. This arrangement avoids interference from the negative pressure component 4 during operation, ensuring stability and comfort during the pumping process. Users can more naturally fit the breast during use, reducing discomfort caused by the operation of the negative pressure component 4. This design optimizes the overall structure of the breast pump 100, making the generation and transmission of negative pressure more efficient. In actual use, users can easily press the negative pressure component 4 located at the end of the connector 2 to quickly generate and transmit negative pressure, promoting milk flow. In addition, this layout improves the portability and ease of operation of the breast pump 100, allowing users to operate the negative pressure component 4 with one hand while ensuring a stable fit of the breast shield 3.

[0051] In one embodiment of this utility model, please refer to Figure 1 The negative pressure component 4 has a connecting part 42 and a pressing part 43. The connecting part 42 has a silicone layer and a hard rubber layer connected to each other. The silicone layer is sleeved on the hard rubber layer, and the silicone segment is connected to the pressing part 43.

[0052] In one embodiment, the negative pressure component 4 comprises a connecting portion 42 and a pressing portion 43. The connecting portion 42 includes a silicone layer and a hard plastic layer, with the silicone layer fitted over the hard plastic layer to ensure structural stability and flexibility. Specifically, the hard plastic layer can be made of rigid plastic materials such as polypropylene (PP) or polycarbonate (PC) to provide structural support and durability; the silicone layer is made of food-grade silicone to ensure sealing and stability in contact with the connecting portion 2. This invention significantly improves the performance and user experience of the negative pressure component 4 by designing a silicone layer and a hard plastic layer in the connecting portion 42. The softness of the silicone layer ensures the sealing and stability of the negative pressure component 4 during use. At the same time, the hard plastic layer provides the necessary structural support, ensuring the durability and stability of the negative pressure component 4, maintaining good performance even after repeated pressing. This design optimizes the overall structure of the negative pressure component 4, making the generation and transmission of negative pressure more efficient.

[0053] In one embodiment of this utility model, please refer to Figure 1 and Figure 2 A sealing element 7 is provided between the connecting part 42 and the connecting member 2, and the sealing element 7 is sleeved on the connecting part 42.

[0054] In this embodiment, a sealing element 7 is provided between the connecting part 42 and the connecting member 2. The sealing element 7 is fitted onto the connecting part 42 to ensure the sealing between the negative pressure member 4 and the connecting member 2. Specifically, the sealing element 7 can be made of food-grade silicone or rubber, which have good elasticity and sealing performance. For example, the sealing element 7 can be designed as an annular silicone ring, the inner diameter of which matches the outer diameter of the connecting part 42 to ensure a tight fit. During assembly, the sealing element 7 is fitted onto the silicone layer of the connecting part 42, and then the connecting part 42 is inserted into the corresponding opening of the connecting member 2. The sealing is achieved through the elastic deformation of the sealing element 7. This design not only ensures the stability and efficiency of negative pressure transmission but also prevents air leakage, improving the overall performance of the breast pump 100. By providing a sealing element 7 between the connecting part 42 and the connecting member 2, the sealing performance and usability of the breast pump 100 are significantly improved. The sealing element 7 effectively prevents air leakage, ensures stable transmission of negative pressure, and improves milk expression efficiency. In practical use, the seal 7 ensures that the negative pressure generated by the negative pressure component 4 during pressing will not fail due to leakage, thus ensuring that milk can flow smoothly into the receiving cavity 1a. This design enhances the overall stability and reliability of the breast pump 100 and reduces the problem of poor milk expression caused by insufficient negative pressure.

[0055] This utility model also proposes a breast pump 100, including a milk bowl 1, a breast pump shield 3, a negative pressure component 4 with a self-recovering cavity wall and an inner cavity, and a connector 2; the milk bowl 1 is provided with a receiving cavity 1a for storing breast milk; the breast pump shield 3 has a breast pumping channel 3a; after the user applies pressure to the negative pressure component 4 to expel the gas in the inner cavity, the negative pressure component 4 generates negative pressure through the recovery displacement of the self-recovering cavity wall; the connector 2 is constructed with a first gas channel, which is used to transmit the negative pressure generated by the negative pressure component 4 to the receiving cavity 1a.

[0056] In one embodiment, the breast pump 100 of this invention achieves efficient and stable milk expression through ingenious structural design. Specifically, the milk bowl 1 serves as a storage container for breast milk, and the shape and size of its receiving cavity 1a can be designed according to actual needs, such as adopting a cylindrical or conical structure, to better store breast milk and facilitate pouring. The breast shield 3 fits tightly against the human breast, and its milk expression channel 3a can be designed in a funnel shape to better guide breast milk into the milk bowl 1. The negative pressure component 4 adopts a compressible air bladder structure, and the user generates negative pressure by pressing the air bladder. The connecting component 2 transmits the negative pressure generated by the negative pressure component 4 to the receiving cavity 1a of the milk bowl 1 through the first gas channel. For example, the connecting component 2 can be designed as a support structure with a pipe, and a one-way valve 6 is provided in the pipe to ensure unidirectional transmission of negative pressure and prevent air backflow. In practical use, after the user places the breast shield 3 against the breast, they press the negative pressure component 4, which transmits the negative pressure to the milk bowl 1 through the connector 2, allowing the breast milk to flow into the receiving cavity 1a under the action of negative pressure. This structure is simple, easy to operate, and easy to clean and sterilize.

[0057] The breast pump 100 of this invention features a reasonable structural design. Through the cooperation of the negative pressure component 4 and the connecting component 2, it effectively avoids the air bubble problem caused by air mixing in traditional manual breast pumps 100, thereby improving the purity of breast milk and promoting healthier infant feeding. Secondly, the breast pump 100 is simple to operate; users only need to press the negative pressure component 4 to express milk, without complicated operating steps, making it suitable for use in various scenarios such as home, workplace, or travel. Furthermore, its portability and ease of use have been improved. For example, the airbag-type negative pressure component 4 design makes the breast pump 100 compact, easy to carry and store. For example, for working mothers, this breast pump 100 can be used quickly during work breaks without taking up too much space or affecting work efficiency due to complicated operation. At the same time, cleaning and sterilization are also more convenient; all parts are detachable for easy washing and drying, further improving hygiene and safety.

[0058] In one embodiment of this utility model, please refer to Figure 1 and Figure 2 The breast pump 100 is equipped with a duckbill valve 5, which is connected to the connector 2. The milk suction channel 3a is connected to the receiving cavity 1a through the duckbill valve 5.

[0059] In this embodiment, the duckbill valve 5 can be made of soft silicone or rubber material to ensure good sealing and elasticity. One end of the duckbill valve 5 is fixedly connected to the connector 2, and the other end is connected to the milk suction channel 3a of the breast pump shield 3. When the negative pressure component 4 generates negative pressure and transmits it through the connector 2, the duckbill valve 5 opens under the action of negative pressure, so that the milk suction channel 3a communicates with the receiving cavity 1a of the milk bowl 1, and the breast milk flows smoothly into the milk bowl 1 under the action of negative pressure. For example, the duckbill valve 5 can be designed as a flat oval structure with a slit in the middle that can be opened and closed elastically. When negative pressure is applied, the slit opens, and air and breast milk pass through; when the negative pressure disappears, the slit closes automatically to prevent air backflow. In addition, the duckbill valve 5 can also be detachably connected to the connector 2 and the breast pump shield 3 by means of threads or snap-fit ​​structures, which facilitates cleaning and replacement.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A breast pump, characterized in that include: Milk bowl (1), wherein the milk bowl (1) has a receiving cavity (1a) for storing breast milk; A breast suction shield (3) is provided with a breast suction channel (3a); A negative pressure component (4) having a self-restoring cavity wall and an inner cavity generates negative pressure through the restoring displacement of the self-restoring cavity wall after the user applies pressure to the negative pressure component to expel gas from the inner cavity; and Connector (2), the connector (2) being used to form at least two independent gas channels; One of the gas channels is used to transmit the negative pressure generated by the negative pressure component (4) to the receiving cavity (1a). Another gas channel is used to guide the negative pressure of the receiving cavity (1a) to the milk suction channel (3a) to drive milk from the milk suction shield (3) to the receiving cavity (1a) of the milk bowl (1).

2. The breast pump of claim 1, wherein, The gas channels of the connector (2) are a first channel (2b) and a second channel (2a), respectively. The negative pressure component (4) and the milk bowl (1) are respectively connected to the two ends of the first channel (2b), and the milk suction channel (3a) and the milk bowl (1) are respectively connected to the two ends of the second channel (2a).

3. The breast pump as described in claim 2, characterized in that, The breast pump includes a duckbill valve (5) connected to the connector (2). The duckbill valve (5) is located at the connection between the first channel (2b) and the second channel (2a). The duckbill valve (5) is used to allow fluid to flow unidirectionally from the second channel (2a) to the first channel (2b).

4. The breast pump of claim 3, wherein, The negative pressure component (4) has a negative pressure chamber (4a) which is connected to the first channel (2b); the breast pump includes a one-way valve (6) which is connected to the connector (2) and is used to allow fluid to flow unidirectionally from the first channel (2b) to the outside.

5. The breast pump as described in claim 4, characterized in that, The connector (2) has a first opening (2c), a second opening (2d), a third opening (2e), and a fourth opening (2f); wherein, the first opening (2c) connects the milk suction channel (3a) and the second channel (2a), the second opening (2d) connects the receiving cavity (1a) and the first channel (2b), the third opening (2e) connects the negative pressure cavity (4a) and the first channel (2b), and the fourth opening (2f) connects the negative pressure cavity (4a) and the outside.

6. The breast pump as described in claim 4, characterized in that, The connector (2) has a flow-blocking part (21) protruding therefrom. The flow-blocking part (21) and the connector (2) enclose a flow-blocking channel (2g). The flow-blocking channel (2g) connects the negative pressure chamber (4a) and the first channel (2b).

7. The breast pump as described in any one of claims 1 to 6, characterized in that, The negative pressure component (4) is provided with a rebound auxiliary part (41), which extends along the inner wall of the negative pressure component (4) and enables the negative pressure component (4) to rebound.

8. The breast pump as described in claim 7, characterized in that, The negative pressure component (4) is made of silicone.

9. The breast pump as described in any one of claims 1 to 6, characterized in that, The negative pressure component (4) is located at the end of the connector (2) away from the breast shield (3).

10. The breast pump as described in claim 9, characterized in that, The negative pressure component (4) has a connecting part (42) and a pressing part (43). The connecting part (42) has a silicone layer and a hard glue layer connected to each other. The silicone layer is sleeved on the hard glue layer and the silicone layer is connected to the pressing part (43).

11. The breast pump as described in claim 10, characterized in that, A sealing element (7) is provided between the connecting part (42) and the connecting member (2), and the sealing element (7) is sleeved on the connecting part (42).

12. A breast pump, characterized in that, include: Milk bowl (1), the milk bowl (1) is provided with a receiving cavity (1a) for storing breast milk; A breast shield (3) having a breast suction channel (3a); The negative pressure component (4) with a self-restoring cavity wall and an inner cavity generates negative pressure through the restoring displacement of the self-restoring cavity wall after the user applies pressure to the negative pressure component to expel the gas in the inner cavity. The connector (2) is configured with a first gas channel for transmitting the negative pressure generated by the negative pressure member (4) to the receiving cavity (1a).

13. The breast pump as described in claim 12, characterized in that, The breast pump is equipped with a duckbill valve (5), which is connected to the connector (2). The milk suction channel (3a) is connected to the receiving cavity (1a) through the duckbill valve (5).

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