A handheld breast pump

Abstract

Embodiments of the present application provide a handheld breast pump, and relate to the field of baby supplies. The handheld breast pump comprises a flexible tee joint, a rear cover, a negative pressure source and a milk storage container; wherein the flexible tee joint comprises a breast cup, a suction bowl and a flow guide barrel, the suction bowl is connected to the breast cup, the suction bowl is used to form a front cavity with the breast, a rear cavity is formed between the suction bowl and the rear cover, the negative pressure source is communicated with the rear cavity through the rear cover, the front cavity, the flow guide barrel and the milk storage container are sequentially communicated from top to bottom, and the breast cup, the suction bowl and the flow guide barrel are integrally formed; the negative pressure source is used to drive the suction bowl to deform, so that the front cavity generates negative pressure to suck out milk, and the milk moves towards the milk storage container under the action of gravity. The handheld breast pump can integrally form the breast cup, the suction bowl and the flow guide barrel into the flexible tee joint, reduces the number of parts through structural optimization, facilitates disassembly under the premise of facilitating milk extraction, and improves the convenience of cleaning operation.

Description

Technical Field

[0001] This invention relates to the field of maternal and infant products, and more specifically, to a handheld breast pump. Background Technology

[0002] A breast pump is a tool used to express milk that has accumulated in the mammary glands. Breast pumps are convenient to use, allowing milk to be expressed and stored in advance for the baby to consume, thus avoiding milk leakage and waste.

[0003] Existing breast pumps are limited by the structure of their components, resulting in inconvenience in disassembly and cleaning. Summary of the Invention

[0004] This invention provides a handheld breast pump that optimizes the structure of its components, making it easier to assemble and disassemble, thereby improving the convenience of cleaning.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a handheld breast pump, comprising:

[0007] Flexible tee, back cover, negative pressure source, and milk storage container;

[0008] The flexible three-way valve includes a breast bra, a suction bowl, and a flow guide tube. The suction bowl is connected to the breast bra and forms a front cavity between the suction bowl and the breast. A rear cavity is formed between the suction bowl and the back cover. The negative pressure source communicates with the rear cavity through the back cover. The front cavity, the flow guide tube, and the milk storage container are connected sequentially from top to bottom. The breast bra, the suction bowl, and the flow guide tube are integrally formed.

[0009] The negative pressure source is used to cause the suction bowl to deform, so that the front cavity generates negative pressure to draw out the milk, and the milk moves toward the milk storage container under the action of gravity.

[0010] Optionally, the flexible tee further includes a unidirectional flow guide;

[0011] The one-way flow guide is integrally formed with the breast bra, the suction bowl, and the flow guide tube;

[0012] Alternatively, the one-way flow guide can be detachably attached to the bra.

[0013] Optionally, the breast bra has a liquid guiding groove, which is connected to the one-way flow guide, and the inner diameter area of ​​the liquid guiding groove is larger than the inner diameter area of ​​the one-way flow guide.

[0014] Optionally, the side wall of the guide tube is provided with an exhaust hole, and the outlet of the exhaust hole is set higher than the inlet of the exhaust hole.

[0015] Optionally, the exhaust port is arranged in a circumferential spiral along the guide tube;

[0016] Alternatively, the exhaust port may be arranged in an arc shape;

[0017] Alternatively, the vent hole may be angled.

[0018] Optionally, a ventilation gap is formed between the bottom end of the rear cover and the side wall of the guide tube, and the outlet of the exhaust hole is located on the front side of the rear cover and is set higher than the ventilation gap.

[0019] Optionally, the bra defines a positioning groove formed on the inner wall of the rear cavity, and a positioning block is formed on the front side of the rear cover. The positioning block is accommodated in the positioning groove and abuts against the suction bowl.

[0020] Optionally, the inner wall defining the rear cavity of the bra is formed with a sealing boss for engaging with the rear cover;

[0021] And / or, the inner wall defining the rear cavity of the bra is formed with a positioning groove for engaging with the rear cover.

[0022] Optionally, the outer wall of the rear end of the bra is formed with a mounting boss for engaging with the rear cover.

[0023] Optionally, the middle region of the suction bowl is positioned away from the front end of the bra relative to the edge region.

[0024] The beneficial effects of the handheld breast pump according to embodiments of the present invention include, for example:

[0025] This handheld breast pump includes a flexible three-way connector, a back cover, a negative pressure source, and a milk storage container. The flexible three-way connector comprises a breast shield, a suction bowl, and a flow guide tube. The suction bowl is connected to the breast shield and forms a front cavity between the suction bowl and the breast. A rear cavity is formed between the suction bowl and the back cover. The negative pressure source communicates with the rear cavity through the back cover. The front cavity, flow guide tube, and milk storage container are connected sequentially from top to bottom. The breast shield, suction bowl, and flow guide tube are integrally molded. The negative pressure source causes the suction bowl to deform, creating negative pressure in the front cavity to draw out the milk. The milk then moves towards the milk storage container under gravity. This handheld breast pump integrates the breast shield, suction bowl, and flow guide tube into a flexible three-way connector. This structural optimization reduces the number of parts, facilitating both pumping and disassembly, thus improving the ease of cleaning. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an exploded structural diagram of a handheld breast pump provided in an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of a handheld breast pump provided in an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of a flexible tee provided in an embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional schematic diagram of the rear cover provided in an embodiment of the present invention;

[0031] Figure 5 for Figure 2 A magnified view of a portion of the V-shape;

[0032] Figure 6 This is a cross-sectional schematic diagram of the liner assembly provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the structure of the liner assembly provided in an embodiment of the present invention.

[0034] Icons: 1000 - Handheld breast pump; 100 - Flexible three-way valve; 109 - Limiting groove; 110 - Breast shield; 111 - Front cavity; 112 - Rear cavity; 113 - Liquid guide groove; 114 - First sealing groove; 115 - Positioning slot; 116 - Assembly boss; 117 - Limiting guide groove; 118 - Anti-slip boss; 119 - Second sealing boss; 120 - Suction bowl; 130 - Flow guide tube; 131 - Vent hole; 140 - One-way flow guide; 200 - Back cover; 2 10-Positioning block; 220-Second sealing groove; 250-Ventilation gap; 300-Negative pressure source; 400-Milk storage container; 500-Inner liner assembly; 510-Areola shield; 511-Expanding section; 512-Extension section; 5121-First sealing boss; 5122-Limiting boss; 5123-Receiving groove; 513-Anti-backflow buckle; 515-Liquid outlet channel; 520-Liquid diaphragm; 523-Ventilation hole; 530-Inner liner skeleton; 531-Limiting guide boss. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0039] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0040] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0043] Please refer to Figure 1 and Figure 2 The handheld breast pump 1000 provided in the embodiments of the present invention can solve the above problems, and will be described in detail below.

[0044] refer to Figures 1-3 The handheld breast pump 1000 includes a flexible three-way connector 100, a back cover 200, a negative pressure source 300, and a milk storage container 400. The flexible three-way connector 100 includes a breast shield 110, a suction bowl 120, and a flow guide tube 130. The suction bowl 120 is connected to the breast shield 110 and forms a front cavity 111 between the suction bowl 120 and the breast. A rear cavity 112 is formed between the suction bowl 120 and the back cover 200. The negative pressure source 300 is connected to the rear cavity 112 through the back cover 200. The front cavity 111, the flow guide tube 130, and the milk storage container 400 are connected sequentially from top to bottom. The breast shield 110, the suction bowl 120, and the flow guide tube 130 are integrally formed.

[0045] The negative pressure source 300 is used to drive the suction bowl 120 to deform, so that the front cavity 111 generates negative pressure to suck out the milk, and the milk moves toward the milk storage container 400 under the action of gravity.

[0046] During operation, the breast shield 110 is used to cover the breast, and the negative pressure source 300 provides negative pressure so that negative pressure is formed sequentially in the front and back chambers 111, thereby drawing the milk out of the breast. After leaving the breast, the milk will move in the front chamber 111 and fall into the guide tube 130 under its own gravity, and then fall into the milk storage container 400 for collection.

[0047] It is worth noting that the front end of the bra 110 is typically designed with a flared shape to cover the breast, and the front cavity 111 is the cavity on the side of the suction cup 120 closest to the breast; the rear end of the bra 110 is the end opposite the front end, and the rear cavity 112 is the cavity on the side of the suction cup 120 furthest from the breast. Similarly, the front end can be understood as the end relatively closer to the breast, and the rear end can be understood as the end relatively furthest from the breast.

[0048] The handheld breast pump 1000 integrates the breast shield 110, suction bowl 120, and flow guide tube 130 into a flexible three-way connector 100. Through structural optimization, the number of parts is reduced, making it convenient for breast pumping and easy to disassemble, thereby improving the convenience of cleaning.

[0049] In this embodiment, the flexible tee 100 is preferably made of silicone, which makes it easy to fold and achieve all-round cleaning. In other embodiments of the present invention, the flexible tee 100 may also be made of other flexible materials, and there is no limitation on the specific material type.

[0050] Furthermore, to facilitate the assembly and disassembly of the milk storage container 400, the milk storage container 400 and the guide tube 130 can be detachably connected. Specific connection methods include, but are not limited to, threaded connections, snap-fit ​​connections, and pin connections. Simultaneously, the top of the milk storage container 400 can be housed inside the guide tube 130, thus allowing the guide tube 130 to function as a container lid, which helps improve the antibacterial performance of the milk storage container 400.

[0051] In some alternative embodiments, please refer to Figure 1 To prevent the emulsion from flowing back after re-entering the guide tube 130, the flexible tee 100 may also include a unidirectional guide element 140, which is disposed between the front cavity 111 and the guide tube 130 so that the front cavity 111 can deliver the emulsion to the guide tube 130.

[0052] Furthermore, the one-way flow guide 140 can be integrally formed with the bra 110, the suction cup 120, and the flow guide tube 130, or the one-way flow guide 140 can be detachably connected to the bra 110.

[0053] It is worth noting that the one-way flow guide 140 can be a one-way valve; in other embodiments of the present invention, the one-way flow guide 140 can also be a one-way diaphragm or other structure with one-way transmission capability, and there is no limitation on its specific structural type.

[0054] In some alternative implementations, refer to Figure 2 and Figure 3 In order to avoid the accumulation of gas in the guide tube 130 and its negative impact on the negative pressure in the front cavity 111, an exhaust hole 131 can be opened on the side wall of the guide tube 130 to facilitate the timely discharge of gas in the guide tube 130.

[0055] Furthermore, to prevent milk leakage while venting gas, the outlet of the vent 131 can be positioned higher than its inlet. Even if some milk splashes onto the opening of the vent 131, it will be difficult for it to overcome gravity and move towards the outlet. Additionally, the inlet of the vent 131 can be positioned higher than the inlet of the milk storage container 400, thus facilitating the discharge of gas from the milk storage container 400 through the vent 131.

[0056] It is worth noting that, in order to improve the anti-leakage effect, the vent hole 131 can be arranged in a circumferential spiral along the guide tube 130, so that when the emulsion enters the vent hole 131 and flows toward the outlet, there is a sufficiently long flow path, which can further prevent the emulsion from leaking out.

[0057] Furthermore, for ease of processing, the vent hole 131 can be arranged in an arc shape or at an angle. When the vent hole 131 is arc-shaped, its arc can be bent upwards or downwards, which can effectively prevent the emulsion from leaking out of the vent hole 131.

[0058] refer to Figure 2 and Figure 3 By setting a one-way flow guide 140, the emulsion can move in one direction when passing through the flow guide 130, so as to avoid backflow in the flow guide 130.

[0059] In this embodiment, the one-way flow guide 140 is a one-way valve; in other embodiments of the present invention, the one-way flow guide 140 may also be a one-way diaphragm or other structure with one-way transmission capability, and there is no limitation on its specific structural type.

[0060] It is worth noting that, in order to facilitate the smooth entry of the extracted emulsion into the one-way flow guide 140, the breast shield 110 is provided with a liquid guide groove 113, which is connected to the one-way flow guide 140. The inner diameter area of ​​the liquid guide groove 113 is larger than the inner diameter area of ​​the one-way flow guide 140.

[0061] When the emulsion enters the front chamber 111 and moves toward the suction bowl 120, it will first enter the liquid guide trough 113 under the influence of gravity. The liquid guide trough 113 will gather the emulsion, and then the emulsion will enter the guide tube 130 to move toward the milk storage container 400.

[0062] In this embodiment, to facilitate processing and molding, the bottom wall of the liquid guiding groove 113 can be flat, and the side wall of the guide vane groove can be perpendicular to the bottom wall. In other embodiments of the present invention, the side wall of the liquid guiding groove 113 can be inclined, thereby making the liquid guiding groove 113 have a V-shaped structure with a wide opening and a narrow bottom, which helps to accelerate the flow rate of the emulsion in the liquid guiding groove 113. Furthermore, the cross-section of the liquid guiding groove 113 is circular, but it can also be rectangular, triangular, fan-shaped, or other shapes. The specific shape of the liquid guiding groove 113, i.e., its cross-sectional shape, is not limited.

[0063] refer to Figure 2 and Figure 3 To ensure the milk flows smoothly into the milk storage container 400 and reduce the chance of splashing, the bottom end of the one-way guide 140 extends into the milk storage container 400. During milk collection, the milk falls from the front chamber 111 into the one-way guide 140 and continues to move along it. It enters the milk storage container 400 the instant it leaves the guide, further reducing the chance of splashing to the vent 131.

[0064] It should be noted that, in order to improve the anti-slip performance of the flexible tee 100 and facilitate the operator's use of the breast shield 110 for breast pumping, anti-slip protrusions 118 can be formed on the outer wall of the breast shield 110. The anti-slip protrusions 118 are in the form of a ring or an arc-shaped structure spaced apart circumferentially. Furthermore, the anti-slip protrusions 118 are arranged in two groups in the axial direction.

[0065] In other embodiments of the present invention, the number of anti-slip protrusions 118 arranged axially can be one, three, five, etc., and the specific number and arrangement of the anti-slip protrusions 118 are not limited.

[0066] refer to Figure 2 and Figure 4 The handheld breast pump 1000 also includes a back cover 200, which is sealed to the rear end of the breast shield 110. A negative pressure source 300 is installed through the back cover 200. The back cover 200 improves the sealing of the rear cavity 112, allowing the negative pressure source 300 to quickly establish a negative pressure environment within the rear cavity 112, thereby causing the suction bowl 120 to deform. Specifically, the back cover 200 has a through hole, and the negative pressure pipe of the negative pressure source 300 is connected to or accommodated in the through hole.

[0067] refer to Figure 5A ventilation gap 250 is formed between the bottom end of the rear cover 200 and the side wall of the guide tube 130. The outlet of the exhaust port 131 is located on the front side of the rear cover 200 and is set higher than the ventilation gap 250. In the working state, the ventilation gap 250 provides an exhaust channel for the outlet of the exhaust port 131, and the rear cover 200 also acts as a shield to protect the outlet of the exhaust port 131, so as to prevent external bacteria from entering the exhaust port 131 from the outlet, thereby preventing contamination of the guide tube 130 and the milk storage container 400.

[0068] Furthermore, the inner wall of the rear cavity 112 defined by the bra 110 can be formed with a positioning groove 115, and a positioning block 210 can be formed on the front side of the back cover 200. The positioning block 210 is accommodated in the positioning groove 115 and abuts against the suction cup 120. The positioning groove 115 and the positioning block 210 cooperate to position the back cover 200, so that the back cover 200 is stably connected to the bra 110. In addition, the back cover 200 also abuts against the suction cup 120 to improve the support of the suction cup 120. Even if the suction cup 120 deforms under negative pressure, it will not easily detach from the bra 110, thereby improving the working stability of the suction cup 120 and helping to improve the service life of the flexible tee 100.

[0069] It is worth noting that, in order to improve the assembly accuracy of the bra 110 and the back cover 200, a mounting boss 116 can be formed on the outer wall of the bra 110 away from the rear end. The mounting boss 116 is used to mate with the back cover 200. Specifically, the mounting boss 116 extends radially along the bra 110, and the rear end face of the mounting boss 116 abuts against the back cover 200.

[0070] In this embodiment, in order to ensure the sealing performance of the bra 110 and the back cover 200, the inner wall of the bra 110 is defined by a second sealing boss 119, and the outer wall of the back cover 200 is defined by a second sealing groove 220. The second sealing boss 119 is accommodated in the second sealing groove 220, thereby avoiding the connection gap between the two and affecting the negative pressure formation rate.

[0071] refer to Figure 1 , Figure 2 and Figure 6To improve the support of the breast shield 110 and prevent it from easily deforming during operation and affecting the milk expression effect, the handheld breast pump 1000 may also include an inner liner assembly 500. The inner liner assembly 500 includes a nipple shield 510 and an inner liner frame 530. The nipple shield 510 is housed in the front cavity 111 and has a liquid outlet channel 515 that communicates with the guide tube 130. The inner liner frame 530 is supported between the nipple shield 510 and the breast shield 110, and the strength of the inner liner frame 530 is greater than the strength of both the nipple shield 510 and the breast shield 110.

[0072] In operation, after leaving the breast, the emulsion enters the anterior chamber 111, then the inner side of the areola shield 510, and under the influence of gravity, passes through the outlet channel 515 and the one-way guide 140 before entering the milk storage container 400. Furthermore, by incorporating an inner lining skeleton 530, the support performance for the areola shield 510 and the breast shield 110 is improved, preventing them from easily deforming during use.

[0073] refer to Figure 6 and Figure 7 To prevent excessive negative pressure from causing the emulsion to pass through the outlet channel 515, the diaphragm 520 can block the emulsion, allowing the blocked emulsion to enter the outlet channel 515, thereby preventing the emulsion from adhering to the surface of the suction bowl 120 and thus helping to improve the emulsion collection efficiency.

[0074] Furthermore, in order to avoid the negative impact of the liquid-blocking membrane 520 on the formation of negative pressure in the front cavity 111, the liquid-blocking membrane 520 can be provided with a vent hole 523. The vent hole 523 is used to connect the cavities on both sides of the liquid-blocking membrane 520, which helps to improve the formation rate of negative pressure in the front cavity 111.

[0075] In some alternative embodiments, in order to prevent the emulsion from passing through the vent hole 523 and adhering to the suction bowl 120, the vent hole 523 can be located at the top of the liquid-separating membrane 520. Even if some emulsion is close to and adheres to the liquid-separating membrane 520, it will be deviated from the vent hole 523 located at the top of the liquid-separating membrane 520 under the influence of gravity, thereby reducing the probability of emulsion leakage and improving the emulsion collection efficiency.

[0076] It should be noted that, in order to facilitate the deformation of the suction bowl 120 to generate negative pressure in the front cavity 111, the central area of ​​the suction bowl 120 can be positioned away from the front end of the breast shield 110 relative to the edge area. This results in the strongest negative pressure force in the central area of ​​the front cavity 111, allowing for efficient milk extraction. Similarly, the central area of ​​the diaphragm 520 can be positioned away from the front end of the breast shield 110 relative to the edge area, so that the shape of the diaphragm 520 closely matches the shape of the suction bowl 120. This also helps to generate a high-intensity negative pressure force in the central area of ​​the front cavity 111.

[0077] refer to Figure 2 This allows the rear end of the areola shield 510 to rest against the suction cup 120, and also provides axial support for the suction cup 120, improving the connection stability of the edge of the suction cup 120. This not only prevents the suction cup 120 from detaching from the breast shield 110, but also prevents the inner wall of the breast shield 110 from deforming after the suction cup 120 is deformed.

[0078] Furthermore, in order to prevent the formation of a cavity between the inner walls of the areola shield 510 and the breast shield 110 from affecting the negative pressure formation rate of the front cavity 111, a first sealing boss 5121 can be formed on the outer wall of the areola shield 510 near the rear end, and a first sealing groove 114 can be formed on the inner wall of the breast shield 110 defining the front cavity 111, with the first sealing boss 5121 accommodated in the first sealing groove 114.

[0079] It should be noted that in other embodiments of the present invention, the positions of the groove and the boss can be interchanged while ensuring the same effect, and there is no specific limitation on the specific objects to which the groove and the boss are set.

[0080] refer to Figure 6 and Figure 7 The areola shield 510 includes a flared section 511 and an extension section 512 arranged sequentially from the front end to the rear end. The inner diameter of the flared end gradually decreases towards the extension section 512. An anti-backflow buckle 513 is formed at the connection between the flared section 511 and the extension section 512. A liquid outlet channel 515 is opened in the extension section 512. In this embodiment, the flared section 511 is funnel-shaped to cover the breast for milk expression.

[0081] When the lotion is drawn from the breast, it first passes through the flared section 511, then enters the extension section 512, and then falls into the outlet channel 515. The anti-backflow buckle 513 can prevent the lotion attached to the extension section 512 from flowing towards the flared section 511.

[0082] In some alternative embodiments, in order to improve the relative positional accuracy of the areola shield 510 and the breast shield 110, the extension section 512 may form a limiting boss 5122 near the outer wall of the flared section 511. At the same time, the inner wall of the breast shield 110 defining the front cavity 111 forms a limiting groove 109, and the limiting boss 5122 is accommodated in the limiting groove 109.

[0083] It is worth noting that, in order to improve the ease of assembly and disassembly of the components and the bra 110, a limiting guide groove 117 is formed on the inner wall of the front cavity 111 defined by the bra 110, and a limiting guide boss 531 is formed at the top of the inner lining skeleton 530, with the limiting guide boss 531 cooperating with the limiting guide groove 117.

[0084] Specifically, the outer wall of the areola shield 510 (which can also be understood as the outer wall of the extension 512) can be provided with a receiving groove 5123, the limiting guide boss 531 is accommodated in the receiving groove 5123, and the top end protrudes from the side wall of the receiving groove 5123, thereby improving the relative position accuracy of the limiting guide boss 531 and the guide bracket.

[0085] In summary, the handheld breast pump 1000 provided by the embodiments of the present invention has at least the following advantages:

[0086] (1) The handheld breast pump 1000 integrates the breast shield 110, the suction bowl 120 and the guide tube 130 into a flexible three-way 100. The number of parts is reduced through structural optimization. It is convenient to perform breast pumping operations and also easy to disassemble, thereby improving the convenience of cleaning operations.

[0087] (2) The handheld breast pump 1000 facilitates the timely discharge of gas in the guide tube 130 by opening an exhaust hole 131, and limits the relative height relationship between the outlet and inlet of the exhaust hole 131, the inlet of the milk storage container 400 and the bottom of the one-way guide 140, thereby ensuring that the milk enters the milk storage container 400 smoothly while making it difficult to splash to the inlet of the exhaust hole 131. Even if it splashes to the inlet, it will not overcome gravity and leak out from the outlet.

[0088] (3) The handheld breast pump 1000 forms an air gap 250 between the bottom end of the rear cover 200 and the side wall of the guide tube 130, and the outlet of the exhaust hole 131 is located on the front side of the rear cover 200 and is set higher than the air gap 250. This facilitates the exhaust operation of the exhaust hole 131 and can also shield and protect the exhaust hole 131, thereby preventing external germs from entering the exhaust hole 131 from the outlet of the exhaust hole 131, thus preventing the guide tube 130 and the milk storage container 400 from being contaminated.

[0089] (4) The handheld breast pump 1000 can simultaneously support and hold the two sides of the edge of the suction bowl 120 through the back cover 200 and the areola cover 510. On the one hand, it improves the connection stability of the edge of the suction bowl 120 and prevents the suction bowl 120 from detaching from the breast cover 110. On the other hand, it also prevents the inner wall of the breast cover 110 from deforming after the suction bowl 120 is deformed.

[0090] (5) The handheld breast pump 1000 is configured such that the middle area of ​​the suction bowl 120 is far away from the front end of the breast shield 110 relative to the edge area, and the middle area of ​​the diaphragm 520 is far away from the front end of the breast shield 110 relative to the edge area. This helps the suction bowl 120 to deform and generate negative pressure in the front cavity 111, and makes the negative pressure force in the middle area of ​​the front cavity 111 the strongest, so as to act on the breast for efficient milk suction.

[0091] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A handheld breast pump, characterized in that, include: Flexible tee (100), back cover (200), negative pressure source (300) and milk storage container (400); The flexible three-way connector (100) includes a breast bra (110), a suction bowl (120), and a flow guide (130). The suction bowl (120) is connected to the breast bra (110). The suction bowl (120) is used to form a front cavity (111) between itself and the breast. A rear cavity (112) is formed between the suction bowl (120) and the back cover (200). The negative pressure source (300) is connected to the rear cavity (112) through the back cover (200). The front cavity (111), the flow guide (130), and the milk storage container (400) are connected sequentially from top to bottom. The breast bra (110), the suction bowl (120), and the flow guide (130) are integrally formed. The negative pressure source (300) causes the suction bowl (120) to deform, so that the front cavity (111) generates negative pressure to suck out the milk, and the milk moves toward the milk storage container (400) under the action of gravity; The handheld breast pump also includes: The lining assembly (500) includes an areola cover (510) and an inner lining frame (530); the areola cover (510) is housed in the front cavity (111), the areola cover (510) has a liquid outlet channel (515) connected to the guide tube (130), the inner lining frame (530) abuts between the areola cover (510) and the breast cover (110), and the strength of the inner lining frame (530) is greater than the strength of both the areola cover (510) and the breast cover (110); The back cover (200) and areola cover (510) provide support and abutment to both sides of the edge of the suction bowl (120).

2. The handheld breast pump according to claim 1, characterized in that, The flexible tee (100) also includes a unidirectional flow guide (140). The unidirectional flow guide (140) is integrally formed with the bra (110), the suction bowl (120) and the flow guide tube (130); Alternatively, the one-way flow guide (140) can be detachably connected to the bra (110).

3. The handheld breast pump according to claim 2, characterized in that, The breast bra (110) has a liquid guiding groove (113), which is connected to the one-way flow guide (140). The inner diameter area of ​​the liquid guiding groove (113) is larger than the inner diameter area of ​​the one-way flow guide (140).

4. The handheld breast pump according to claim 1, characterized in that, The side wall of the guide tube (130) is provided with an exhaust hole (131), and the outlet of the exhaust hole (131) is set higher than the inlet of the exhaust hole (131).

5. The handheld breast pump according to claim 4, characterized in that, The exhaust port (131) is spirally arranged along the circumferential direction of the guide tube (130); Alternatively, the vent (131) may be arranged in an arc shape; Alternatively, the vent (131) may be angled.

6. The handheld breast pump according to claim 4, characterized in that, A ventilation gap (250) is formed between the bottom end of the rear cover (200) and the side wall of the guide tube (130). The outlet of the exhaust hole (131) is located on the front side of the rear cover (200) and is set higher than the ventilation gap (250).

7. The handheld breast pump according to any one of claims 1-6, characterized in that, The breast bra (110) defines the inner wall of the rear cavity (112) with a positioning groove (115), and the front side of the rear cover (200) has a positioning block (210) which is accommodated in the positioning groove (115) and abuts against the suction bowl (120).

8. The handheld breast pump according to any one of claims 1-6, characterized in that, The breast bra (110) defines the inner wall of the rear cavity (112) having a second sealing boss (119) for engaging with the rear cover (200); And / or, the breast bra (110) defines a positioning groove (115) formed on the inner wall of the rear cavity (112) for engagement with the rear cover (200).

9. The handheld breast pump according to any one of claims 1-6, characterized in that, The outer wall of the rear end of the bra (110) is formed with a mounting boss (116) for engaging with the rear cover (200).

10. The handheld breast pump according to any one of claims 1-6, characterized in that, The middle region of the suction bowl (120) is positioned away from the front end of the bra (110) relative to the edge region.

Images