Electric breast pump

Abstract

The invention discloses an electric breast pump, and relates to the technical field of breast pumps, the electric breast pump comprises an air exhaust piece, a three-way assembly, a milk collecting assembly and a negative pressure deformation piece, a milk sucking channel is formed in the three-way assembly, the milk collecting assembly comprises a one-way valve, the one-way valve is communicated with the milk sucking channel, and the negative pressure deformation piece and the three-way assembly define a cavity; the cavity is communicated with the milk sucking channel, and the negative pressure deformation piece is communicated with the air exhaust piece. The negative pressure deformation part is driven by the air exhaust part to elastically deform, the volume of the negative pressure deformation part is reduced, the volume of the cavity is increased, and therefore negative pressure is generated in the milk suction channel. And when the negative pressure deformation piece recovers, the collected milk is squeezed out through the one-way valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of breast pumps, in particular to an electric breast pump. BACKGROUND

[0002] As a common maternal and infant product, the core function of a breast pump is to simulate the sucking action of an infant by generating negative pressure, thereby helping the mother to extract milk. The negative pressure generation methods of the electric breast pumps on the market are mainly divided into two categories.

[0003] The first category is a diaphragm pump type, which generates negative pressure by reciprocating a piston or diaphragm driven by a motor in an air pump, and then transmits the negative pressure to the breast cup through a hose. This method has a complex structure, many components, a large volume, and obvious noise during operation.

[0004] The second category is a three-way structure, which integrates the negative pressure generating device in the three-way assembly. This type of device usually includes a negative pressure cavity made of flexible material. The negative pressure pump extracts air in the negative pressure cavity, causing the cavity to deform and shrink in volume under the action of pressure difference, thereby generating negative pressure in the connected breast suction channel. When the negative pressure is removed, the negative pressure cavity restores its original shape by relying on its own elastic rebound, and this rebound action can also assist in discharging the collected milk. In order to obtain sufficient rebound force, many negative pressure cavities have to design complex spiral reinforcing ribs on the side wall of the cavity. Although this structure enhances the rebound, it severely occupies the effective deformation space of the negative pressure cavity, resulting in a decrease in the volume utilization rate of the negative pressure cavity, and thus affecting the breast pumping efficiency. SUMMARY

[0005] The main purpose of the present application is to provide an electric breast pump to improve the breast pumping efficiency.

[0006] To achieve the above purpose, the electric breast pump provided by the present application comprises: an air extraction member; a three-way assembly, the three-way assembly forming a breast suction channel inside; a milk collection assembly, the milk collection assembly comprising a one-way valve, the one-way valve being in communication with the breast suction channel; a negative pressure deformation member, the negative pressure deformation member and the three-way assembly jointly forming a chamber, and the chamber being in communication with the breast suction channel, the negative pressure deformation member being in communication with the air extraction member; wherein the negative pressure deformation member is configured to elastically deform under the driving of the air extraction member, so that the negative pressure deformation member shrinks in volume, the chamber increases in volume, thereby generating negative pressure in the breast suction channel.

[0007] In an embodiment, the negative pressure deformation member comprises a side wall; The sidewall has an elliptical cross-section, the sidewall is a non-uniform thickness structure, and the sidewall has a first thickness at both ends of the major axis of the elliptical cross-section and a second thickness at both ends of the minor axis of the elliptical cross-section. Wherein, the first thickness is greater than the second thickness.

[0008] In one embodiment, the difference between the first thickness and the second thickness is 0.2-0.4 mm.

[0009] In one embodiment, the negative pressure deformation member further includes a bottom wall integrally connected to the side wall, the bottom wall having a third thickness that is greater than the second thickness and less than the first thickness.

[0010] In one embodiment, the three-way assembly further includes a groove that communicates with the milk suction channel; The negative pressure deformation component includes an integrally connected sealing part and a deformation body. The sealing part is sleeved at the opening of the groove and fits against both the inner and outer side walls of the groove. The deformable body is located within the groove; The groove and the negative pressure deformation element together form the cavity.

[0011] In one embodiment, the milk collection assembly further includes a first housing; The first housing and the three-way assembly together form a milk storage chamber, and the milk suction channel and the milk storage chamber are connected through the one-way valve; The first housing includes a first clamping part, the shape of which is adapted to the shape of the sealing part, and the first clamping part and the groove together clamp the sealing part; The first clamping part and the groove together form a negative pressure cavity. The first clamping part is provided with a connection port, which connects to the negative pressure cavity. The negative pressure cavity is connected to the air extraction component through the connection port.

[0012] In one embodiment, the inner wall of the negative pressure deformation member is provided with at least one first sealing ring, which is used to cooperate with the first clamping part to improve the airtightness.

[0013] In one embodiment, the electric breast pump further includes a three-way tube and a solenoid valve, wherein the three ends of the three-way tube are respectively connected to the air extraction component, the solenoid valve, and the negative pressure deformation component.

[0014] In one embodiment, the electric breast pump further includes a laser light, and the three-way connector is made of transparent PP material; The laser lamp is fixedly connected to the three-way assembly, and the laser light from the laser lamp penetrates the three-way assembly to facilitate visual alignment.

[0015] In one embodiment, the electric breast pump further includes a flexible horn cover that fits against the sidewall of the milk suction channel. The flexible horn cover is designed to fit against the user's breast, and both ends of the flexible horn cover are unobstructed.

[0016] The technical solution of this invention drives the negative pressure deformation component to actively contract through the air extraction component, thereby increasing the volume of the enclosed chamber to form negative pressure in the milk suction channel. Unlike the traditional three-way structure, which mainly relies on the negative pressure chamber itself being deflated to generate negative pressure, this invention makes the negative pressure generated in the milk suction channel more effective, improves milk suction efficiency, and eliminates the need for complex internal reinforcing rib structures, making mold design simpler and manufacturing more convenient, effectively reducing product production costs, and improving production consistency and yield. When the air extraction component stops working, the negative pressure deformation component recovers its deformation through its own elasticity, and the positive pressure generated by its volume expansion can actively squeeze out the collected milk through the one-way valve, avoiding milk residue. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a structure of an embodiment of the electric breast pump provided by the present invention; Figure 2 A cross-sectional view of the electric breast pump provided by the present invention; Figure 3 This is a schematic diagram of the structure of a negative pressure deformation component; Figure 4 This is a cross-sectional view of the negative pressure deformation component; Figure 5 This is a longitudinal section view of the negative pressure deformation component; Figure 6 This is a schematic diagram of an electric breast pump. Figure 7 A schematic diagram of an electric breast pump without its outer casing; Figure 8 This is a sectional view of an electric breast pump.

[0019] Explanation of icon numbers: 1. Air extraction component; 2. Three-way assembly; 21. Milk suction channel; 22. Groove; 23. Chamber; 3. Milk collection assembly; 31. One-way valve; 32. First housing; 321. Milk storage chamber; 322. First clamping part; 3221. Insertion interface; 323. Milk pouring port; 324. Connection port; 4. Negative pressure deformation component; 41. Deformation body; 411. Side wall; 412. Bottom wall; 42. Sealing part; 43. First sealing ring; 44. Negative pressure chamber; 51. Three-way pipe; 52. Air pipe adapter; 53. Silicone tube; 61. Solenoid valve; 62. Laser lamp; 63. Control main board; 64. Power supply; 7. Flexible horn cover; 8. Second housing; 81. Outer cover; 811. Control panel; 82. Second clamping part; 9. Sealing cap.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention 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.

[0023] Furthermore, if the embodiments of this invention 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. Thus, 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 invention.

[0024] This invention proposes an electric breast pump.

[0025] Please seeFigure 1 and Figure 2 In one embodiment of the present invention, the electric breast pump includes: Extraction component 1; Three-way component 2, wherein a milk suction channel 21 is formed inside the three-way component 2; Milk collection assembly 3, the milk collection assembly 3 includes a one-way valve 31, the one-way valve 31 is connected to the milk suction channel 21; The negative pressure deformation component 4 and the three-way assembly 2 together form a chamber 23, and the chamber 23 is connected to the milk suction channel 21. The negative pressure deformation component 4 is connected to the air extraction component 1. The negative pressure deformation element 4 is configured to undergo elastic deformation under the drive of the air extraction element 1, causing the volume of the negative pressure deformation element 4 to shrink and the volume of the chamber 23 to increase, thereby generating negative pressure in the milk suction channel 21. The technical solution of this invention drives the negative pressure deformation component 4 to actively contract through the air extraction component 1, thereby increasing the volume of the enclosed chamber 23 to form negative pressure in the milk suction channel 21. Unlike the traditional three-way structure, which mainly relies on the negative pressure chamber itself being deflated to generate negative pressure, this invention makes the negative pressure generated in the milk suction channel 21 more effective, improves milk suction efficiency, and eliminates the need for complex internal reinforcing rib structures, making mold design simpler and manufacturing more convenient, effectively reducing product production costs, and improving production consistency and yield. When the air extraction component 1 stops working, the negative pressure deformation component 4 recovers its deformation through its own elasticity, and the positive pressure generated by its volume expansion can actively squeeze the collected milk through the one-way valve 31, avoiding milk residue.

[0026] like Figure 2 As shown, the one-way valve 31 and the negative pressure deformation element 4 are arranged around the milk suction channel 21 to improve space utilization.

[0027] Optionally, the negative pressure deformation element 4 includes a sidewall 411; The sidewall 411 has an elliptical cross-section, the sidewall 411 has a non-uniform thickness structure, and the sidewall 411 has a first thickness at both ends of the major axis of the elliptical cross-section and a second thickness at both ends of the minor axis of the elliptical cross-section. Wherein, the first thickness is greater than the second thickness.

[0028] like Figure 4 As shown, the thickness at point a is the first thickness, and the thickness at point b is the second thickness.

[0029] It should be noted that the geometry of the sidewall 411 itself can provide excellent structural resilience, so that the negative pressure deformation component 4 does not need to rely on other reinforcing structures. The negative pressure deformation component 4 obtains a larger effective deformation space within the same overall space, and the volume shrinkage and expansion are greater, thereby significantly improving the volume utilization rate.

[0030] Furthermore, by setting the first thickness at both ends of the major axis of the elliptical cross-section to be greater than the second thickness at both ends of the minor axis, it is essentially a targeted reinforcement based on the mechanical requirements of the negative pressure deformation component 4 during deformation. The minor axis direction is the main direction of deformation and collapse, and the thinner wall thickness is more prone to bending; while the thicker wall thickness at both ends of the major axis provides stronger support and resilience, ensuring that it can still return to its initial shape after deformation and contraction. The stable deformation mode avoids abnormal bulging or jamming in individual areas, ensuring that a stable and consistent negative pressure is generated in each working cycle, thereby improving milk pumping efficiency and reliability.

[0031] It can be understood that the terms "thicker" and "thinner" in the above context refer to the relative thickness of the first thickness and the second thickness.

[0032] Optionally, the difference between the first thickness and the second thickness is 0.2-0.4 mm.

[0033] In one embodiment, the first thickness is 1.2 mm and the second thickness is 0.9 mm.

[0034] It is understood that the wall thickness of the sidewall 411 located between the two ends of the long axis and the short axis is gradually and smoothly connected to avoid stress concentration.

[0035] It should be noted that the material of the negative pressure deformation component 4 is a liquid silicone or solid silicone or other elastically deformable material, and this embodiment does not impose specific restrictions on it.

[0036] like Figure 5 As shown, the negative pressure deformation component 4 also includes a bottom wall 412 integrally connected to the side wall 411. The bottom wall 412 has a third thickness, which is greater than the second thickness and less than the first thickness.

[0037] It should be noted that, Figure 5 The thickness at point c is the third thickness of the bottom wall 412.

[0038] In some embodiments, the negative pressure deformation member 4 has a tongue-shaped structure and is hollow inside, with its two ends along the length direction being open and closed, respectively, and the bottom wall 412 is the closed part.

[0039] It should be noted that the third thickness is greater than the second thickness. The thickening treatment at the bottom of the negative pressure deformation component 4 can effectively prevent fatigue failure caused by repeated deformation and bending of the material, and ensure the rebound effect.

[0040] In one embodiment, the third thickness is 1 mm, the first thickness is 1.2 mm, and the second thickness is 0.9 mm.

[0041] like Figure 2 and Figure 6 As shown, the three-way component 2 also includes a groove 22, which connects to the milk suction channel 21; The negative pressure deformation component 4 includes an integrally connected sealing part 42 and deformation body 41. The sealing part 42 is sleeved at the opening of the groove 22 and fits against both the inner and outer side walls of the groove 22. The deformable body 41 is located within the groove 22; The groove 22 and the negative pressure deformation element 4 together form the cavity 23.

[0042] Understandably, by fitting the sealing part 42 onto the opening of the groove 22 and ensuring it fits against both the inner and outer side walls of the groove 22, a "U-shaped" sealing contact is formed. This multi-layered sealing interface greatly enhances the sealing reliability of the chamber 23, effectively preventing air leakage that may occur during operation due to vibration or displacement of the negative pressure deformation component 4, thus ensuring efficient and stable negative pressure generation.

[0043] Furthermore, the groove 22 provides a natural positioning reference and guide for the installation of the negative pressure deformation component 4. The sealing part 42 automatically corrects its position as it is fitted along the opening of the groove 22, ensuring that the deformation body 41 is precisely housed within the groove 22. This not only simplifies the assembly process and improves production efficiency, but also structurally eliminates sealing failure or deformation interference caused by misalignment, ensuring consistent product performance.

[0044] It is understood that the deformable body 41 is composed of the side wall 411 and the bottom wall 412.

[0045] like Figure 2 As shown, the milk collection assembly 3 also includes a first housing 32; The first housing 32 and the three-way assembly 2 together form a milk storage chamber 321, and the milk suction channel 21 and the milk storage chamber 321 are connected through the one-way valve 31; The first housing 32 includes a first clamping part 322, the shape of which is adapted to the shape of the sealing part 42, and the first clamping part 322 and the groove 22 together clamp the sealing part 42; The first clamping part 322 and the groove 22 together form a negative pressure cavity 44. The first clamping part 322 is provided with a connection port 324, which connects to the negative pressure cavity 44. The negative pressure cavity 44 is connected to the air extraction component 1 through the connection port 324.

[0046] It is understood that the first housing 32 not only forms the milk storage chamber 321, but the first clamping part 322 and the groove 22 of the three-way assembly 2 together fix and seal the negative pressure deformation member 4. At the same time, the connection port 324 on the first housing 32 also serves to connect the air extraction member 1. This greatly improves the integrity and stability of the structure and simplifies the overall number of components.

[0047] like Figure 6 As shown, the negative pressure deformation component 4 needs to be cleaned. The open end of the negative pressure deformation component 4 facilitates cleaning of its interior. However, since the negative pressure deformation component 4 needs to maintain its airtightness, it needs to ensure a tight connection with the suction component 1. The first clamping part 322 can effectively cover the open end of the negative pressure deformation component 4 to ensure the airtightness of the negative pressure cavity 44. At the same time, the connection port 324 ensures the communication between the negative pressure cavity 44 and the suction component 1.

[0048] like Figure 2 As shown, the first clamping part 322 includes an insertion interface 3221. The shape of the insertion interface 3221 is adapted to the inner wall shape of the negative pressure deformation member 4. The insertion interface 3221 is inserted into the negative pressure deformation member 4, and the side wall of the insertion interface 3221 fits against the inner wall of the negative pressure deformation member 4 to achieve a seal.

[0049] In some embodiments, the one-way valve 31 is a duckbill valve, which ensures that milk flows from the milk suction channel 21 into the milk storage chamber 321, and when negative pressure is generated in the milk suction channel 21, air in the milk storage chamber 321 will not enter the milk suction channel 21 through the duckbill valve.

[0050] It is understood that the duckbill valve is sealed to the three-way assembly 2.

[0051] Furthermore, the first housing 32 is provided with a milk pouring port 323, through which milk stored in the milk storage chamber 321 can be poured out.

[0052] The milk inlet 323 is located on the side opposite to the flow direction of the one-way valve 31 to ensure that milk will not flow out from the milk inlet 323 during normal use.

[0053] like Figure 3 and Figure 5 As shown, the inner wall of the negative pressure deformation member 4 is provided with at least one first sealing ring 43, which is used to cooperate with the first clamping part 322 to improve the airtightness.

[0054] Understandably, the first sealing ring 43, acting as a raised sealing lip, is compressed by the first clamping part 322 after assembly, generating greater contact stress than a planar fit, thus forming an extremely effective redundant sealing barrier. Even if the main sealing surface develops minor gaps due to long-term use or manufacturing tolerances, this sealing ring can ensure the airtightness of the negative pressure chamber 44, significantly reducing the risk of leakage.

[0055] The outer wall of the insertion interface 3221 is in close contact with the first sealing ring 43.

[0056] It is understood that the number of the first sealing rings 43 can be one or multiple layers, and this embodiment does not impose specific restrictions on this.

[0057] In one embodiment, the inner wall of the negative pressure deformation member 4 is provided with two layers of the first sealing ring 43, and the two layers of the first sealing ring 43 are spaced apart to ensure the airtightness of the negative pressure cavity 44.

[0058] Furthermore, the first sealing ring 43 has a teardrop-shaped cross-section to guide the insertion of the connector 3221.

[0059] Optionally, the electric breast pump also includes a three-way tube 51 and a solenoid valve 61, the three ends of which are respectively connected to the air extraction component 1, the solenoid valve 61 and the negative pressure deformation component 4.

[0060] It is understood that the opening and closing of the solenoid valve 61 can control the flow of air to and from the outside. When the solenoid valve 61 is closed, the air extraction component 1 is used to extract air from the negative pressure deformation component 4 to establish negative pressure. When the solenoid valve 61 is opened, the outside air rushes into the negative pressure chamber 44 instantly, quickly and completely relieving the negative pressure state.

[0061] It is understandable that by connecting the air extraction component 1, the solenoid valve 61, and the negative pressure deformation component 4 into an integrated air circuit system through the three-way pipe 51, precise control of the milk pumping rhythm can be achieved. The three-way pipe 51, as the core air circuit connector, replaces the complex design that might require multiple independent pipes and connectors.

[0062] It should be noted that the electric breast pump also includes a control motherboard 63, which is electrically connected to the solenoid valve 61 and the air extraction component 1 to control their opening and closing.

[0063] The air extraction component 1 is a negative pressure pump.

[0064] Optionally, both the air extraction component 1 and the solenoid valve 61 are connected to the three-way pipe 51 via a silicone tube 53.

[0065] like Figure 6 and Figure 7 As shown, the electric breast pump also includes an air hose adapter 52 and a second housing 8. The connection port 324 is connected to the three-way pipe 51 through the air hose adapter 52. The second housing 8 is provided with a second clamping part 82 adapted to the air hose adapter 52. The second clamping part 82 and the first housing 32 together clamp the connection part between the air hose adapter 52 and the connection port 324 to ensure the airtightness of the connection between the two.

[0066] Furthermore, the electric breast pump also includes a power supply 64 and an outer cover 81. The outer cover 81 and the second housing 8 together form an installation cavity for installing various electronic components and pipelines, such as the solenoid valve 61, the air extraction component 1, the three-way pipe 51, the main board, and the power supply 64, etc., all of which are installed inside the installation cavity and are not exposed to the outside.

[0067] The power supply 64 is used to supply power to electrical equipment such as the solenoid valve 61 and the air extraction component 1.

[0068] It should be noted that the shape of the second housing 8 is adapted to a part of the shape of the first housing 32. The second housing 8 is fitted onto the first housing 32, and the outer cover 81 and the part of the first housing 32 not covered by the second housing 8 together form an arc-shaped surface.

[0069] In some embodiments, a control panel 811 is mounted on the surface of the outer cover 81, and the control panel 811 is electrically connected to the control motherboard 63.

[0070] Optionally, the electric breast pump also includes a laser light 62, and the three-way assembly 2 is made of transparent PP (Polypropylene) material; The laser lamp 62 is fixedly connected to the three-way assembly 2, and the laser of the laser lamp 62 penetrates the three-way assembly 2 to facilitate visual alignment.

[0071] It should be noted that the laser beam emitted by the laser lamp 62 penetrates the transparent three-way component 2, forming a clear light spot on the breast, providing the user with intuitive and precise visual guidance. This allows the user to easily align the areola and nipple, solving the problems of poor milk expression, low efficiency, or discomfort caused by misalignment, and ensuring the effectiveness of the milk expression process. Especially for new mothers or in environments where observation is difficult (such as at night), this feature greatly reduces the barrier to entry and psychological burden, making the breast pumping process simpler, more confident, and more comfortable, thus improving the product's user-friendliness.

[0072] It should be noted that the first housing 32 is also made of transparent PP material, allowing users to directly observe the milk collection in the milk storage chamber 321, and the first housing 32 also allows the laser beam emitted by the laser lamp 62 to pass through.

[0073] like Figure 2 and Figure 8 As shown, in some embodiments, the laser lamp 62 is fixedly connected to the second housing 8, which is made of opaque material. Therefore, the second housing 8 has through holes for the laser lamp 62 to penetrate and irradiate.

[0074] Optionally, the electric breast pump also includes a flexible horn cover 7, which fits against the side wall of the milk suction channel 21. The flexible horn cover 7 is used to fit against the user's breast, and both ends of the flexible horn cover 7 are unobstructed.

[0075] It should be noted that the three-way component 2 is made of rigid material. If the user directly places their breast against the three-way component 2, it may not fit effectively and could easily cause discomfort. The flexible flared cover 7, made of soft material, can adaptively conform to the breast contours of different users, avoiding the pressure and discomfort that may be caused by the edges of traditional rigid breast cups. This soft contact surface greatly improves comfort during breast pumping, reduces skin redness or pain that may occur with prolonged use, and the flexible flared cover 7 improves the fit to the breast, ensures a tight seal, and increases pumping efficiency.

[0076] In some embodiments, the flexible horn cover 7 is provided with at least one second sealing ring on its outer side, the second sealing ring being used to improve the airtightness of the fit with the side wall of the milk suction channel 21.

[0077] It is understood that the flexible horn cover 7 does not obstruct the communication channel between the three-way assembly 2, the chamber 23, and the one-way valve 31.

[0078] Optionally, the electric breast pump further includes a cover 9, which is used to engage with the three-way assembly 2 or the first housing 32 to cover the milk suction channel 21.

[0079] Understandably, before, during, or after use of the electric breast pump, the cover 9 physically covers and seals the entrance to the milk pumping channel 21, effectively preventing external contaminants such as dust and hair from entering the milk pumping channel 21 and its internal cavity. This greatly reduces the risk of product contamination and provides hygiene assurance for the next use, making it especially suitable for scenarios where it needs to be carried around.

[0080] Furthermore, such as Figure 8 As shown, the cap 9 can also cover the milk inlet 323.

[0081] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. An electric breast pump, characterized in that The electric breast pump comprises: a suction member; a tee assembly, which is internally formed with a milk suction channel; a milk collection assembly, which comprises a one-way valve and is in communication with the milk suction channel; a negative pressure deformation member, which is combined with the tee assembly to form a cavity, and is in communication with the milk suction channel, and is in communication with the suction member; wherein the negative pressure deformation member is configured to be elastically deformed under the driving of the suction member, so that the volume of the negative pressure deformation member is reduced, the volume of the cavity is increased, and thus a negative pressure is generated in the milk suction channel.

2. The electric breast pump of claim 1, wherein, The negative pressure deformation member comprises a side wall; the side wall has an elliptical cross section, and is of a non-uniform thickness structure, and has a first thickness at both ends of the major axis of the elliptical cross section and a second thickness at both ends of the minor axis of the elliptical cross section; wherein the first thickness is greater than the second thickness.

3. The electric breast pump of claim 2, wherein, The difference between the first thickness and the second thickness is 0.2-0.4 mm.

4. The electric breast pump of claim 2 or 3, wherein, The negative pressure deformation member further comprises a bottom wall integrally connected with the side wall, the bottom wall has a third thickness, the third thickness is greater than the second thickness and less than the first thickness.

5. The electric breast pump of any one of claims 1 to 3, wherein, The tee assembly further comprises a groove, which is in communication with the milk suction channel; the negative pressure deformation member comprises a sealing part and a deformation main body integrally connected, the sealing part is sleeved at the notch of the groove and is in close contact with the inner and outer side walls of the groove; the deformation main body is located in the groove; the groove and the negative pressure deformation member jointly form the cavity.

6. The electric breast pump of claim 5, wherein, The milk collection assembly further comprises a first shell; the first shell and the tee assembly jointly form a milk storage cavity, and the milk suction channel and the milk storage cavity are in communication through the one-way valve; the first shell comprises a first clamping part, the shape of the first clamping part is matched with the shape of the sealing part, and the first clamping part clamps the sealing part together with the groove; the first clamping part and the groove jointly form a negative pressure cavity, the first clamping part is provided with a connecting port, the connecting port is in communication with the negative pressure cavity, and the negative pressure cavity is in communication with the suction member through the connecting port.

7. The electric breast pump of claim 6, wherein, The inner wall of the negative pressure deformation member is provided with at least one first sealing ring, which is used to improve the airtightness in cooperation with the first clamping part.

8. The electric breast pump of claim 1, wherein, The electric breast pump further comprises a tee pipe and a solenoid valve, three ends of the tee pipe are in communication with the suction member, the solenoid valve and the negative pressure deformation member, respectively.

9. The electric breast pump of claim 1, wherein, The electric breast pump further comprises a laser lamp, and the tee assembly is made of PP transparent material; the laser lamp is fixedly connected with the tee assembly, and the laser of the laser lamp penetrates through the tee assembly, so as to facilitate visual alignment.

10. The electric breast pump of claim 1, wherein, The electric breast pump further comprises a flexible horn cover, which is in close contact with the side wall of the milk suction channel, is used to be in close contact with the breast of a user, and is open at both ends.

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