Breast pump

Abstract

The utility model discloses a breast pump which comprises a collecting assembly, a negative pressure assembly and a liquid blocking driving part, the collecting assembly comprises a breast pumping protective cover and a milk storage container, the breast pumping protective cover is communicated with the milk storage container, the breast pumping protective cover is used for being attached to a breast, and the milk storage container is used for storing milk; the negative pressure assembly is pneumatically or mechanically or electrically connected with the collecting assembly and indirectly applies negative pressure to the collecting assembly; the liquid blocking driving piece is arranged on the collecting assembly and comprises a first deformation driving part and a second deformation driving part, and the first driving part and the second driving part form a double-layer driving structure. And the negative pressure assembly indirectly applies negative pressure to the collecting assembly through the first deformation driving part and the second deformation driving part. The technical scheme of the utility model provides a breast pump capable of preventing milk from being sucked into an air path.

Description

Technical Field

[0001] The utility model relates to the technical field of maternal and infant products, in particular to a breast pump. Background Art

[0002] A breast pump is a tool used to express breast milk accumulated in the mammary glands. It is generally used when the baby is unable to suck breast milk directly, or when the mother is separated from the baby but still wants to breastfeed.

[0003] In the prior art, breast pumps typically use an electric or manual negative pressure system to directly or indirectly apply negative pressure to a breast shield or milk storage container that fits the breast, allowing milk to be drawn into the milk storage container or other storage space for storage. Current breast pumps apply negative pressure directly to the breast through a negative pressure air circuit, which can cause milk to be simultaneously drawn into the air circuit, potentially contaminating the milk or affecting the circuitry or pump on the main air circuit end. Current methods employ a removable liquid barrier driver within the negative pressure air circuit, which can easily fail with long-term use, creating the risk of milk leakage and backflow. Utility Model Content

[0004] The main purpose of the utility model is to provide a breast pump, which aims to prevent milk from being sucked into the air path.

[0005] To achieve the above-mentioned objectives, the breast pump proposed in the present invention includes a collection component, a negative pressure component and a liquid barrier drive component, wherein the collection component includes a breast shield and a milk storage container, the breast shield is connected to the milk storage container, the breast shield is used to fit the breast, and the milk storage container is used to store milk; the negative pressure component is pneumatically, mechanically or electrically connected to the collection component, and indirectly applies negative pressure to the collection component; the liquid barrier drive component is provided in the collection component, and the liquid barrier drive component includes a first deformable drive part and a second deformable drive part, the first drive part and the second drive part forming a double-layer drive structure, and the negative pressure component indirectly applies negative pressure to the collection component through the first deformable drive part and the second deformable drive part.

[0006] In one embodiment of the present application, the first deformation driving portion and the second deformation driving portion are integrally formed and enclosed to form a sealed space;

[0007] Alternatively, the first deformation driving portion is tightly connected to the second deformation driving portion.

[0008] In one embodiment of the present application, the first deformation driving portion and the second deformation driving portion form a flat disc-shaped component.

[0009] In one embodiment of the present application, the liquid barrier driving component also includes a connecting component, the first deformation driving part is sealedly connected to one end of the connecting component, and the second deformation driving part is sealedly connected to the other end of the connection, and the first deformation driving part and the second deformation driving part enclose a sealed space or tightly fit together.

[0010] In one embodiment of the present application, the connecting member is a support frame provided along the periphery of the first deformation driving part and the second deformation driving part, and the support frame defines the periphery shape of the first deformation driving part and the second deformation driving part.

[0011] In one embodiment of the present application, the support frame is made of a hard material.

[0012] In one embodiment of the present application, the first deformation driving part and the second deformation driving part are independent of each other. When the breast pump is assembled, the first deformation driving part and the second deformation driving part enclose and form a sealed space or fit tightly together.

[0013] In one embodiment of the present application, the first deformation driving portion is closer to the breast shield than the second deformation driving portion, the first deformation driving portion includes a first side close to the breast shield and a second side close to the second deformation driving portion, the second deformation driving portion includes a third side close to the second side of the first deformation driving portion and a fourth side away from the breast shield, and the second side is closely attached to or spaced apart from the third side.

[0014] In one embodiment of the present application, the first deformation driving portion is a single-disposable sheet-shaped barrier deformation structure.

[0015] In one embodiment of the present application, the liquid barrier driving member is integrally formed with the milk storage container and is sealedly connected to the milk storage container to separate the breast pump into two gas-liquid separated parts.

[0016] In one embodiment of the present application, the collecting assembly further comprises a three-way assembly having three openings communicating with each other, wherein the first opening is communicated with the breast shield, the second opening is connected to the negative pressure assembly, and the third opening is communicated with the milk storage container. The liquid barrier driving component is disposed in the three-way assembly and is integrally formed with the three-way assembly and sealedly connected thereto. The liquid barrier driving component separates the three-way assembly into two parts separated by gas and liquid, and the negative pressure assembly indirectly applies negative pressure to the three-way assembly through the liquid barrier driving component.

[0017] In one embodiment of the present application, the breast shield includes a flange and a nipple accommodating portion, the nipple accommodating portion having openings at both ends and a through-hole, the flange being connected to an opening of the nipple accommodating portion and configured to abut a breast, the liquid barrier driver being integrally formed with and sealingly connected to the flange, and the negative pressure assembly indirectly applying negative pressure to the flange via the liquid barrier driver;

[0018] Alternatively, the liquid barrier driving member is provided at the other opening of the nipple accommodating portion and is sealedly connected to the other opening of the nipple accommodating portion, and the negative pressure component indirectly applies negative pressure to the nipple accommodating portion through the liquid barrier driving member.

[0019] The breast pump proposed in the technical solution of the present utility model includes a collection component, a negative pressure component and a liquid barrier drive component. The collection component includes a breast shield and a milk storage container. The liquid barrier drive component is arranged on the collection component. When the user uses it, the breast shield is attached to the breast. The negative pressure component indirectly applies negative pressure to the collection component through the liquid barrier drive component, so that milk can be sucked out of the user's breast and then flow into the milk storage container for temporary storage. The liquid barrier drive component includes a first deformable drive part and a second deformable drive part, which is more effective and can reduce the occurrence of milk being sucked into the air path of the negative pressure component, thereby preventing the milk from being contaminated or causing the negative pressure component to short-circuit and fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a breast pump according to the present invention;

[0022] Figure 2 This is a schematic structural diagram of an embodiment of a breast shield in a breast pump of the present invention;

[0023] Figure 3 This is a schematic structural diagram of another embodiment of the breast pump of the present invention;

[0024] Figure 4 This is a schematic structural diagram of another embodiment of the breast pump of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of an embodiment of the first deformation drive unit and the second deformation drive unit in the breast pump of the present invention;

[0026] Figure 6 This is a schematic structural diagram of another embodiment of the first deformation drive unit and the second deformation drive unit in the breast pump of the present invention;

[0027] Figure 7 This is an exploded cross-sectional view of yet another embodiment of the breast pump of the present invention;

[0028] Figure 8 This is an exploded cross-sectional view of yet another embodiment of the breast pump of the present invention.

[0029] Description of Figure Numbers:

[0030]

[0031]

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0036] The present invention provides a breast pump 100 .

[0037] In the embodiment of the present utility model, in combination with reference to Figures 1 to 8The breast pump 100 includes a collecting component 1, a negative pressure component 3 and a liquid barrier driver 2. The collecting component 1 includes a breast shield 11 and a milk storage container 12. The breast shield 11 is connected to the milk storage container 12. The breast shield 11 is used to fit the breast, and the milk storage container 12 is used to store milk. The negative pressure component 3 is pneumatically, mechanically or electrically connected to the collecting component 1 and indirectly applies negative pressure to the collecting component 1. The liquid barrier driver 2 is provided in the collecting component 1. The liquid barrier driver 2 includes a first deformable driver 21 and a second deformable driver 22. The first deformable driver 21 and the second deformable driver 22 form a double-layer drive structure. The negative pressure component 3 indirectly applies negative pressure to the collecting component 1 through the first deformable driver 21 and the second deformable driver 22.

[0038] In this embodiment, the collection assembly 1 includes a breast shield 11 and a milk storage container 12. The milk storage container 12 can be a milk bag, a milk bottle, or a milk bowl. The milk storage container 12 can be directly connected to the breast shield 11, connected via a short tube, or the milk bowl can surround the breast shield 11 to form a separate wearable unit. The two can be integral or detachable, or the milk bowl or milk bottle can be connected to a housing separately, but a channel between the two allows breast milk to flow from the breast shield 11 into the milk storage container 12. The breast shield 11 is designed to fit the user's breast and has a funnel or hemispherical shape that conforms to the breast. To enhance the user experience, the breast shield 11 is made of a skin-friendly and soft material, such as silicone or latex, which is comfortable and less likely to cause skin allergies or other problems. The negative pressure assembly 3 indirectly applies negative pressure to the collection assembly 1 via the liquid barrier driver 2, causing the collection assembly 1 to compress the breast, helping the user drain milk from the breast and transfer it into the milk storage container 12 for temporary storage. The power structure used to generate negative pressure in the negative pressure assembly 3 includes, but is not limited to, a piezoelectric pump, a diaphragm pump, a hydraulic pump, or a mechanical pump. This negative pressure can be transmitted to a liquid barrier such as a diaphragm or an airbag, indirectly creating a negative pressure inside the breast shield 11. This negative pressure draws breast milk into the milk storage container 12 for storage. The liquid barrier driver 2 can be a deformable structure such as a diaphragm or an airbag. The negative pressure assembly 3 indirectly applies negative pressure to the collection assembly 1 through the deformation of the liquid barrier driver 2, ultimately applying negative pressure to the user's breast, drawing milk into the milk storage container 12 for temporary storage. The liquid barrier driving component 2 includes a first deformable driving portion 21 and a second deformable driving portion 22. The double-layer liquid barrier driving component 2 can improve the airtightness of the breast pump 100. When one layer fails unexpectedly, the other layer of liquid barrier driving component 2 serves as insurance to prevent milk from being sucked into the negative pressure component 3, thereby extending the service life of the breast pump 100.

[0039] The liquid barrier driver 2 and the negative pressure assembly 3 or the collection assembly 1 are integrally formed and sealed, meaning that the liquid barrier driver 2 and the negative pressure assembly 3 or the collection assembly 1 are an inseparable whole, with no gap between them, and no need for installation, squeezing, or other clamping structures to achieve a seal therebetween. This arrangement effectively overcomes the problem of the independently detachable elastic diaphragm structure used in the prior art breast pump 100, which may fail to seal the liquid during use due to problems such as misalignment or edge wrinkling, thereby causing serious accidents such as milk contamination or damage to the electronic components of the breast pump 100. It also overcomes the problem of the independently detachable elastic diaphragm structure used in the prior art breast pump 100, which requires separate cleaning, which is cumbersome, and may also fail to seal the liquid after disassembly and cleaning, resulting in misalignment, which may cause serious accidents such as milk contamination or damage to the electronic components of the breast pump 100.

[0040] The connection between the negative pressure component 3 and the collection component 1 refers to the negative pressure component 3 used to cause negative pressure in at least part of the space inside the collection component 1. It can be an air pump such as a diaphragm pump or a piezoelectric ceramic pump, which transmits air pressure to the liquid barrier driver 2 for deformation movement, thereby causing a change in negative pressure inside the collection component 1; it can also be a mechanical drive structure that mechanically drives the liquid barrier driver 2 to deform or reciprocate, thereby causing a change in negative pressure inside the collection component 1; or the liquid barrier driver 2 itself can be a piezoelectric material, and after power is applied, the liquid barrier driver 2 can self-vibrate or deform, thereby causing a change in negative pressure inside the collection component 1.

[0041] The breast pump 100 proposed in the technical solution of the present invention includes a collection component 1, a negative pressure component 3 and a liquid barrier driver 2. The collection component 1 includes a breast shield 11 and a milk storage container 12. The liquid barrier driver 2 is arranged on the collection component 1. When the user uses it, the breast shield 11 is attached to the breast. The negative pressure component 3 indirectly applies negative pressure to the collection component 1 through the liquid barrier driver 2, so that milk can be sucked out of the user's breast and then flow into the milk storage container 12 for temporary storage. The liquid barrier driver 2 includes a first deformable driver 21 and a second deformable driver 22, which is more effective and can reduce the occurrence of milk being sucked into the air path of the negative pressure component 3, thereby preventing the milk from being contaminated or causing the negative pressure component 3 to short-circuit and fail.

[0042] In one embodiment of the present application, the first deformation driving portion 21 and the second deformation driving portion 22 are integrally formed and enclose a sealed space;

[0043] Alternatively, the first deformation driving portion 21 and the second deformation driving portion 22 are tightly connected.

[0044] In this embodiment, the first and second deformable drive parts 21, 22 are integrally formed, and a sealed space can be enclosed between the first and second deformable drive parts 21, thereby indirectly transmitting negative pressure from the second deformable drive part 22 to the first deformable drive part 21 through the sealed space. Alternatively, the first and second deformable drive parts 21, 22 are tightly connected, directly transmitting negative pressure from the second deformable drive part 22 to the first deformable drive part 21, thereby achieving negative pressure transmission. This ultimately applies negative pressure to the collection assembly 1, drawing milk from the mammary glands into the milk storage container 12 for temporary storage. Because the negative pressure assembly 3 indirectly applies negative pressure to the mobile phone through the first and second deformable drive parts 21, 22, accidents in which milk is drawn into the negative pressure assembly 3 are reduced.

[0045] In one embodiment of the present application, the first deformation driving portion 21 and the second deformation driving portion 22 form a flat disc-shaped component.

[0046] In this embodiment, the first deformation driving part 21 and the second deformation driving part 22 form a flat disc-shaped component. The disc-shaped component can be a capsule with a space in the middle, or a double-layer tightly fitted component, which is not further limited here.

[0047] In one embodiment of the present application, the liquid barrier driving member 2 also includes a connecting member 4, the first deformation driving part 21 is sealedly connected to one end of the connecting member 4, and the second deformation driving part 22 is sealedly connected to the other end of the connection, and the first deformation driving part 21 and the second deformation driving part 22 are enclosed to form a sealed space or tightly fit.

[0048] In this embodiment, the first and second deformable drive units 21 and 22 are integrally connected via a connecting member 4. A sealed space is formed between the first and second deformable drive units 21 and 22. Negative pressure is indirectly transferred from the second deformable drive unit 22 to the first deformable drive unit 21 through the sealed space, or directly transferred from the second deformable drive unit 22 to the first deformable drive unit 21 by the close connection between the first and second deformable drive units 21 and 22. This transfer of negative pressure ultimately applies negative pressure to the collection assembly 1, drawing milk from the mammary glands into the milk storage container 12 for temporary storage. Because the negative pressure assembly 3 indirectly applies negative pressure to the mobile phone through the first and second deformable drive units 21 and 22, accidents in which milk is drawn into the negative pressure assembly 3 are reduced.

[0049] In one embodiment of the present application, the connecting member 4 is a support frame provided along the periphery of the first deformation driving portion 21 and the second deformation driving portion 22 , and the support frame defines the periphery shape of the first deformation driving portion 21 and the second deformation driving portion 22 .

[0050] In this embodiment, the support frame can be a structure that clamps the first deformation driving part 21 and the second deformation driving part 22 to form a seal; or the first deformation driving part 21 and the second deformation driving part 22 can be arranged at intervals, and the support frame is arranged between the two, and a sealing structure is formed between the support frame and the first deformation driving part 21 and the second deformation driving part 22; or the first deformation driving part 21 and the second deformation driving part 22 are integrally formed with the support frame to form a sealing structure, which is not further limited here.

[0051] In one embodiment of the present application, the support frame is made of a hard material.

[0052] In this embodiment, the support frame is made of a hard material, such as hard plastic, which can better clamp or connect the first deformation driving part 21 and the second deformation driving part 22 to form a sealing structure and be installed at a required installation position.

[0053] In one embodiment of the present application, the first deformation driving part 21 and the second deformation driving part 22 are independent of each other. When the breast pump 100 is assembled, the first deformation driving part 21 and the second deformation driving part 22 enclose and form a sealed space or fit tightly together.

[0054] In this embodiment, the first and second deformation-actuating units 21, 22 are independent components. One may be provided in the breast shield 11 and the other in the milk storage container 12. When the breast shield 11 and the milk storage container 12 are connected, the first and second deformation-actuating units 21, 22 enclose a sealed space or fit tightly together to transmit negative pressure. Alternatively, one may be provided in the milk storage container 12 and the other in the negative pressure assembly 3. When the negative pressure assembly 3 and the milk storage container 12 are connected, the first and second deformation-actuating units 21, 22 enclose a sealed space or fit tightly together to transmit negative pressure.

[0055] In one embodiment of the present application, the first deformation driving portion 21 is closer to the breast shield 11 than the second deformation driving portion 22. The first deformation driving portion 21 includes a first side close to the breast shield 11 and a second side close to the second deformation driving portion 22. The second deformation driving portion 22 includes a third side close to the second side of the first deformation driving portion 21 and a fourth side away from the breast shield 11. The second side is closely fitted to or spaced apart from the third side.

[0056] In this embodiment, the first deformation drive part 21 is arranged close to the breast shield 11, and the second deformation drive part 22 is arranged close to the first deformation drive part 21. The first deformation drive part 21 and the second deformation drive part 22 are tightly fitted or spaced apart to form a sealed space to transfer negative pressure from the second deformation drive part 22 to the first deformation drive part 21, and finally to the breast shield 11.

[0057] In one embodiment of the present application, the first deformation driving portion 21 is a disposable sheet-shaped barrier deformation structure.

[0058] In this embodiment, since the first deformable drive unit 21 is positioned close to the breast shield 11 and comes into direct contact with breast milk, the first deformable drive unit 21 can be configured as a disposable sheet-like barrier deformable structure. After a single use, it can be discarded and replaced with a new first deformable drive unit 21, reducing cleaning efforts and preventing the risk of water entering the breast pump 100 during cleaning, thereby extending the lifespan of the breast pump 100. This breast pump 100 can also be designed to be shared for emergency use, preventing cross-contamination by using a disposable first deformable drive unit 21.

[0059] In one embodiment of the present application, the liquid barrier driving member 2 is integrally formed with the milk storage container 12 and is sealedly connected to the milk storage container 12 to separate the breast pump 100 into two gas-liquid separated parts.

[0060] In this embodiment, the liquid barrier driver 2 is integrally formed with the milk storage container 12 and sealed, dividing the breast pump 100 into two gas-liquid separations. One section allows milk to flow, ultimately into the milk storage container 12 for temporary storage. The other section allows the negative pressure assembly 3 to apply negative pressure to the liquid barrier driver 2, indirectly applying negative pressure to the space within the breast shield 11 and milk storage container 12. Ultimately, this negative pressure is applied to the user's breast, helping the user express milk from the mammary gland. The liquid barrier driver 2 prevents milk from being drawn into the air path of the negative pressure assembly 3, thereby preventing milk contamination or short-circuiting the negative pressure assembly 3.

[0061] In one embodiment of the present application, the collecting assembly 1 further comprises a three-way assembly 13 having three openings connected to one another, wherein the first opening is connected to the breast shield 11, the second opening is connected to the negative pressure assembly 3, and the third opening is connected to the milk storage container 12. The liquid barrier driving component 2 is disposed in the three-way assembly 13 and is integrally formed with the three-way assembly 13 and sealedly connected thereto. The liquid barrier driving component 2 separates the three-way assembly 13 into two parts for gas-liquid separation, and the negative pressure assembly 3 indirectly applies negative pressure to the three-way assembly 13 via the liquid barrier driving component 2.

[0062] In this embodiment, the collection assembly 1 also includes a three-way assembly 13, which includes a first opening, a second opening, and a third opening that communicate with each other. The first opening is for communication with the breast shield 11, the second opening is for communication with the negative pressure assembly 3, and the third opening is for communication with the milk storage container 12. The liquid barrier driver 2, which can be a diaphragm or airbag structure, is integrally formed within the three-way assembly 13 and sealed therewith. The negative pressure assembly 3 and the liquid barrier driver 2 apply negative pressure to the three-way assembly 13, which in turn applies negative pressure to the collection assembly 1, ultimately applying negative pressure to the user's breast, helping the user express milk from the mammary gland. The milk then flows through the breast shield 11 into the milk storage container 12 for temporary storage. The liquid barrier driver 2 disposed in the three-way assembly 13 prevents milk from being drawn into the negative pressure assembly 3, thereby preventing milk contamination or short circuiting of the negative pressure assembly 3.

[0063] In one embodiment of the present application, the breast shield 11 includes a flange 111 and a nipple receiving portion 112. The nipple receiving portion 112 has openings at both ends and is connected thereto. The flange 111 is connected to an opening of the nipple receiving portion 112. The flange 111 is used to abut against the breast. The liquid barrier driver 2 is integrally formed with the flange 111 and is sealed therewith. The negative pressure assembly 3 indirectly applies negative pressure to the flange 111 via the liquid barrier driver 2.

[0064] Alternatively, the liquid barrier driver 2 is disposed at another opening of the nipple accommodating portion 112 and is sealedly connected to the other opening of the nipple accommodating portion 112 , and the negative pressure component 3 indirectly applies negative pressure to the nipple accommodating portion 112 through the liquid barrier driver 2 .

[0065] In this embodiment, the breast shield 11 includes a flange 111 and a nipple receiving portion 112. The nipple receiving portion 112 is open at both ends and is through-hole, for accommodating the nipple. The nipple receiving portion 112 can be made of a rigid material, such as plastic, metal tube, glass tube, etc., or a flexible or semi-flexible material, such as rubber or silicone, without specific limitation. The flange 111 is made of a flexible material, such as rubber or silicone. When negative pressure is applied to the flange 111, the flange 111 deforms, transmitting the negative pressure to the user's breast, further improving milk ejection efficiency. A liquid barrier driver 2 is integrally formed with the flange 111. The negative pressure assembly 3 applies negative pressure to the liquid barrier driver 2, thereby applying negative pressure to the flange 111, ultimately applying negative pressure to the user's breast, helping to express milk from the mammary gland. The milk then flows through the breast shield 11 into the milk storage container 12 for temporary storage. The liquid barrier driver 2 is arranged on the flange 111, and the air path of the negative pressure assembly 3 is not connected to the flange 111 and / or the nipple receiving portion 112, so there is no risk of contaminating milk or damaging the circuit.

[0066] In one example, the liquid barrier driver 2 is positioned at another opening of the nipple receiving portion 112, and the negative pressure assembly 3 indirectly applies negative pressure to the liquid barrier driver 2. The liquid barrier driver 2 is made of an elastically deformable material and can deform, thereby applying negative pressure to the nipple receiving portion 112, and ultimately to the user's breast, helping to express milk from the mammary gland. The milk flows through the breast shield 11 into the milk storage container 12 for temporary storage. The liquid barrier driver 2 is positioned at another opening of the nipple receiving portion 112, allowing milk to flow directly from the nipple receiving portion 112 into the milk storage container 12. The liquid barrier driver 2 prevents milk from being drawn into the negative pressure assembly 3, potentially contaminating the milk or damaging the circuitry.

[0067] In one example, the collection assembly 1 includes a breast shield 11, which includes a flange 111 that fits against the breast, a nipple receiving portion 112 that accommodates the nipple, and a milk storage container 12 in fluid communication with the nipple receiving portion 112. The two components can be integral or detachable. Preferably, a first deformable drive portion 21 and a second deformable drive portion 22 are integrally formed at the end of the flange 111. The first deformable drive portion 21 includes a side proximal to the milk and a side distal to the milk, and the second deformable drive portion 22 includes a side proximal to the first deformable drive portion 21 and a side proximal to the air path. The first deformable drive portion 21 and the second deformable drive portion 22 fit tightly together, or a negative pressure chamber is formed therebetween. An air pump intermittently draws air from the air inlet, driving the first deformable drive portion 21 and the second deformable drive portion 22 to reciprocate. The pump assembly includes an air pump, which applies negative pressure through the negative pressure air hole, causing the first deformation drive part 21 and the second deformation drive part 22 to deform and reciprocate, causing negative pressure to be generated in the flange 111, and guiding milk from the breast milk to the milk bowl.

[0068] In other examples, the first deformation driving part 21 is integrated on the channel side wall of the milk bowl or the diaphragm is integrally formed at the end of the nipple channel; the second deformation driving part 22 is integrated on the main unit and closes the negative pressure suction port.

[0069] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A breast pump, characterized in that: include A collecting component, the collecting component comprising a breast shield and a milk storage container, the breast shield being in communication with the milk storage container, the breast shield being used to fit the breast, and the milk storage container being used to store milk; A negative pressure component, which is pneumatically, mechanically or electrically connected to the collecting component and indirectly applies negative pressure to the collecting component; as well as A liquid barrier driving component, wherein the liquid barrier driving component is arranged on the collection component, and the liquid barrier driving component comprises a first deformation driving part and a second deformation driving part, wherein the first deformation driving part and the second deformation driving part form a double-layer driving structure, and the negative pressure component indirectly applies negative pressure to the collection component through the first deformation driving part and the second deformation driving part.

2. The breast pump according to claim 1, characterized in that The first deformation driving part and the second deformation driving part are integrally formed and enclose a sealed space; Alternatively, the first deformation driving portion is tightly connected to the second deformation driving portion.

3. The breast pump according to claim 2, characterized in that The first deformation driving part and the second deformation driving part form a flat disc-shaped component.

4. The breast pump according to claim 1, characterized in that: The liquid barrier driving component also includes a connecting member, the first deformation driving part is sealedly connected to one end of the connecting member, the second deformation driving part is sealedly connected to the other end of the connection, and the first deformation driving part and the second deformation driving part enclose a sealed space or fit tightly together.

5. The breast pump according to claim 4, characterized in that The connecting member is a support frame arranged along the outer periphery of the first deformation driving part and the second deformation driving part, and the support frame defines the outer periphery shape of the first deformation driving part and the second deformation driving part.

6. The breast pump according to claim 5, characterized in that The support frame is made of hard material.

7. The breast pump according to claim 1, characterized in that The first deformation driving part and the second deformation driving part are independent of each other. When the breast pump is assembled, the first deformation driving part and the second deformation driving part enclose a sealed space or fit tightly together.

8. The breast pump according to claim 7, characterized in that The first deformation driving portion is closer to the breast shield than the second deformation driving portion, the first deformation driving portion includes a first side close to the breast shield and a second side close to the second deformation driving portion, the second deformation driving portion includes a third side close to the second side of the first deformation driving portion and a fourth side away from the breast shield, and the second side is closely attached to or spaced apart from the third side.

9. The breast pump according to claim 8, characterized in that The first deformation driving part is a single-disposable sheet-shaped barrier deformation structure.

10. The breast pump according to any one of claims 1 to 9, characterized in that The liquid barrier driving member is integrally formed with the milk storage container and is sealedly connected to the milk storage container to separate the breast pump into two gas-liquid separated parts.

11. A breast pump according to any one of claims 1 to 9, characterized in that The collecting assembly further comprises a three-way assembly, wherein the three-way assembly has three openings that are interconnected, wherein the first opening is connected to the breast shield, the second opening is connected to the negative pressure assembly, and the third opening is connected to the milk storage container. The liquid barrier driving component is disposed in the three-way assembly, and is integrally formed with the three-way assembly and sealedly connected thereto. The liquid barrier driving component separates the three-way assembly into two parts separated by gas and liquid, and the negative pressure assembly indirectly applies negative pressure to the three-way assembly through the liquid barrier driving component.

12. A breast pump according to any one of claims 1 to 9, characterized in that The breast shield comprises a flange and a nipple receiving portion, the nipple receiving portion has openings at both ends and is connected thereto, the flange is connected to an opening of the nipple receiving portion, the flange is used to abut against a breast, the liquid barrier driving member is integrally formed with the flange and is sealedly connected thereto, and the negative pressure assembly indirectly applies negative pressure to the flange through the liquid barrier driving member; Alternatively, the liquid barrier driving member is disposed at another opening of the nipple accommodating portion and is sealedly connected to the other opening of the nipple accommodating portion, and the negative pressure component indirectly applies negative pressure to the nipple accommodating portion through the liquid barrier driving member.

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