Handheld breast pump

Abstract

The embodiment of the utility model provides a handheld breast pump, and relates to the field of pregnant and baby products. 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 cover, a suction bowl and a guide cylinder, the suction bowl is connected to the breast cover, a front cavity is formed between the suction bowl and 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, and the front cavity, the guide cylinder and the milk storage container are sequentially communicated from top to bottom; the breast cover, the suction bowl and the guide cylinder are integrally formed; the negative pressure source is used for driving the suction bowl to deform, so that the front cavity generates negative pressure to suck out the emulsion, and the emulsion moves towards the milk storage container under the action of gravity. According to the handheld breast pump, the breast cover, the suction bowl and the guide cylinder can be integrally formed into the flexible tee joint, the number of parts is reduced through structural optimization, and on the premise of facilitating breast pumping operation, disassembly is convenient, so that the convenience of cleaning operation is improved.

Description

Technical Field

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

[0002] A breast pump is a tool used to suck out the milk accumulated in the mammary glands. The breast pump is convenient for sucking out the milk in advance and storing it for the baby to consume, thereby avoiding waste caused by milk overflow.

[0003] Existing breast pumps are limited by the structure of components, resulting in problems such as inconvenience in assembly and disassembly, and inconvenience in cleaning. Utility Model Content

[0004] The utility model provides a handheld breast pump, which can optimize the structure of components of the breast pump, thereby facilitating assembly and disassembly, thereby improving the convenience of cleaning operations.

[0005] The embodiment of the present utility model can be implemented as follows:

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

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

[0008] The flexible tee comprises a breast shield, a suction bowl, and a guide tube. The suction bowl is connected to the breast shield and 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 connected to the rear cavity through the rear cover. The front cavity, the guide tube, and the milk storage container are connected in sequence from top to bottom. The breast shield, the suction bowl, and the guide tube are integrally formed.

[0009] The negative pressure source is used to drive the suction bowl to deform, so that the front cavity generates negative pressure to suck 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 one-way flow guide;

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

[0012] Alternatively, the one-way air guide is detachably connected to the breast shield.

[0013] Optionally, the breast shield is provided with a liquid guiding groove, the liquid guiding groove is communicated with 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, an exhaust hole is provided on the side wall of the guide tube, and the outlet of the exhaust hole is arranged higher than the inlet of the exhaust hole.

[0015] Optionally, the exhaust holes are arranged in a spiral along the circumference of the guide tube;

[0016] Alternatively, the exhaust hole is arranged in an arc shape;

[0017] Alternatively, the exhaust hole is arranged obliquely.

[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 at the front side of the rear cover and is arranged higher than the ventilation gap.

[0019] Optionally, a positioning slot is formed on the inner wall of the breast shield defining 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 slot and abuts against the suction bowl.

[0020] Optionally, the inner wall of the breast shield defining the rear cavity is formed with a sealing boss, and the sealing boss is used to cooperate with the rear cover;

[0021] And / or, a positioning slot is formed on the inner wall of the breast shield defining the rear cavity, and the positioning slot is used for matching with the rear cover.

[0022] Optionally, an outer wall of the rear end of the breast shield is formed with an assembly boss, and the assembly boss is used to cooperate with the rear cover.

[0023] Optionally, the middle region of the suction cup is arranged further away from the front end of the breast shield than the edge region.

[0024] The beneficial effects of the handheld breast pump of the embodiment of the utility model include, for example:

[0025] The handheld breast pump includes a flexible tee, a rear cover, a negative pressure source, and a milk storage container. The flexible tee includes a breast shield, a suction bowl, and a diversion tube. The suction bowl is connected to the breast shield, forming a front cavity between the suction bowl and the breast, and a rear cavity between the suction bowl and the rear cover. The negative pressure source is connected to the rear cavity through the rear cover. The front cavity, the diversion tube, and the milk storage container are sequentially connected from top to bottom. The breast shield, suction bowl, and diversion tube 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 toward the milk storage container under the action of gravity. The handheld breast pump can integrate the breast shield, suction bowl, and diversion tube into a flexible tee. Through structural optimization, the number of parts is reduced. While facilitating the milk pumping operation, it is also easy to disassemble, thereby improving the convenience of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the exploded structure of the handheld breast pump provided in an embodiment of the present utility model;

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

[0029] Figure 3 A schematic cross-sectional view of a flexible tee provided in an embodiment of the present utility model;

[0030] Figure 4 A schematic cross-sectional view of a rear cover provided in an embodiment of the present utility model;

[0031] Figure 5 for Figure 2 A partial enlarged schematic diagram of the middle V;

[0032] Figure 6 A schematic cross-sectional view of a liner assembly provided in an embodiment of the present utility model;

[0033] Figure 7 This is a schematic structural diagram of the lining assembly provided in an embodiment of the present utility model.

[0034] Icons: 1000-handheld breast pump; 100-flexible tee; 109-limiting groove; 110-breast shield; 111-front cavity; 112-back cavity; 113-liquid guide groove; 114-first sealing groove; 115-positioning card slot; 116-assembly boss; 117-limiting guide groove; 118-anti-slip boss; 119-second sealing boss; 120-suction bowl; 130-guide tube; 131-exhaust hole; 140-one-way guide piece; 200-back cover; 2 10-positioning block; 220-second sealing groove; 250-ventilation gap; 300-negative pressure source; 400-milk storage container; 500-liner assembly; 510-areola shield; 511-expanding section; 512-extension section; 5121-first sealing boss; 5122-limiting boss; 5123-accommodating groove; 513-anti-backflow buckle; 515-liquid outlet channel; 520-liquid barrier membrane; 523-vent; 530-liner frame; 531-limiting guide boss. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0040] The terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0041] Unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0042] It should be noted that, in the absence of 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 embodiment of the present invention can solve the above problems, which will be described in detail below.

[0044] refer to Figure 1-Figure 3 The handheld breast pump 1000 includes a flexible tee 100, a rear cover 200, a negative pressure source 300, and a milk storage container 400. The flexible tee 100 includes a breast shield 110, a suction cup 120, and a diversion tube 130. The suction cup 120 is connected to the breast shield 110. The suction cup 120 is used to form a front cavity 111 with the breast. A rear cavity 112 is formed between the suction cup 120 and the rear cover 200. The negative pressure source 300 is connected to the rear cavity 112 through the rear cover 200. The front cavity 111, the diversion tube 130, and the milk storage container 400 are connected in sequence from top to bottom. The breast shield 110, the suction cup 120, and the diversion 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 in the back-front and front chambers 111 in turn, thereby sucking milk out of the breast; after leaving the breast, the milk moves in the front chamber 111 and falls to the guide tube 130 under the influence of its own gravity, and then falls into the milk storage container 400 through the guide tube 130 for collection.

[0047] It is worth noting that the front end of the breast shield 110 is generally designed as a bell-shaped structure, which is used to cover the breast. The front cavity 111 is the cavity on the side of the suction cup 120 close to the breast. The rear end of the breast shield 110 is the end opposite to the front end, and the rear cavity 112 is the cavity on the side of the suction cup 120 away from the breast. Similarly, the front end can be understood as the end relatively close to the breast, and the rear end can be understood as the end relatively far from the breast.

[0048] The handheld breast pump 1000 can integrate the breast shield 110, the suction cup 120 and the guide tube 130 into a flexible tee 100, thereby reducing the number of parts through structural optimization. While facilitating the milk pumping operation, it is also easy to disassemble, thereby improving the convenience of cleaning operations.

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

[0050] Furthermore, to facilitate assembly and disassembly of the milk storage container 400, the milk storage container 400 and the flow guide tube 130 can be detachably connected. Specific connection methods include, but are not limited to, threaded connections, snap connections, and latch connections. Furthermore, the top end of the milk storage container 400 can be accommodated inside the flow guide tube 130, allowing the flow guide tube 130 to function as a container cover, thereby improving the antibacterial performance of the milk storage container 400.

[0051] In some alternative embodiments, please refer to Figure 1 In order to prevent the emulsion from flowing back after entering the guide tube 130, the flexible tee 100 may further include a one-way guide 140, which is arranged between the front cavity 111 and the guide tube 130 so that the front cavity 111 transports the emulsion to the guide tube 130.

[0052] Furthermore, the one-way flow guide 140 can be integrally formed with the breast shield 110 , the suction bowl 120 and the flow guide tube 130 , or the one-way flow guide 140 can be detachably connected to the breast shield 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 membrane flap or other structures with one-way transmission capabilities, and there is no limitation on its specific structural type.

[0054] In some optional embodiments, reference Figure 2 and Figure 3 In order to prevent gas accumulation in the guide tube 130 and negatively affect 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 timely discharge of gas in the guide tube 130.

[0055] Furthermore, to prevent milk from leaking while venting gas, the outlet of the vent hole 131 can be positioned higher than the inlet of the vent hole 131. Even if some milk splashes onto the mouth of the vent hole 131, it is difficult for it to overcome gravity and move toward the outlet. Furthermore, the inlet of the vent hole 131 can be positioned higher than the inlet of the milk storage container 400, thereby facilitating the discharge of gas within the milk storage container 400 through the vent hole 131.

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

[0057] In addition, in order to facilitate processing, the exhaust hole 131 can be arranged in an arc shape or an inclined shape. When the exhaust hole 131 is in an arc shape, the arc bending direction can be upward or downward, which can effectively prevent the emulsion from leaking out from the outlet of the exhaust hole 131.

[0058] refer to Figure 2 and Figure 3 By setting a one-way flow guide 140, the emulsion can be moved in one direction when passing through the guide tube 130, so as to avoid the backflow phenomenon of the guide tube 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 can also be a one-way membrane flap or other structure with one-way transmission capability, and its specific structural type is not limited.

[0060] It is worth noting that in order to facilitate the sucked lotion to enter the one-way flow guide 140 smoothly, the breast shield 110 can be provided with a liquid guide groove 113, which is connected to the one-way flow guide 140, and 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 milk enters the front chamber 111 and moves toward the suction bowl 120 , it first enters the liquid guide groove 113 under the influence of gravity. The liquid guide groove 113 collects the milk and then enters the guide tube 130 to move toward the milk storage container 400 .

[0062] In this embodiment, to facilitate processing and forming, the bottom wall of the liquid-conducting groove 113 can be flat, and the side walls of the guide vane groove can be perpendicular to the bottom wall. In other embodiments of the present invention, the side walls of the liquid-conducting groove 113 can be inclined, thereby making the liquid-conducting groove 113 a V-shaped structure with a large mouth and a small bottom, which helps to accelerate the flow rate of the emulsion in the liquid-conducting groove 113. In addition, the cross-section of the liquid-conducting groove 113 is circular, and the cross-section of the liquid-conducting groove 113 can also be rectangular, triangular, fan-shaped, or other shapes. The specific appearance, i.e., the cross-sectional shape of the liquid-conducting groove 113 is not limited.

[0063] refer to Figure 2 and Figure 3 To ensure smooth milk flow into the milk storage container 400 and reduce the risk of milk splashing, the bottom end of the one-way flow guide 140 can extend into the milk storage container 400. During milk collection, milk falls from the front chamber 111 into the one-way flow guide 140, continuously moving along the one-way flow guide 140. The moment it leaves the guide, it enters the milk storage container 400, further reducing the risk of milk splashing into the vent 131.

[0064] It should be noted that to improve the anti-slip performance of the flexible tee 100 and facilitate the operator's handheld breast shield 110 for breastfeeding, the outer wall of the breast shield 110 can be formed with anti-slip bosses 118. The anti-slip bosses 118 are annular or circumferentially spaced arc-shaped structures. Furthermore, the anti-slip bosses 118 are arranged in two groups in the axial direction.

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

[0066] refer to Figure 2 and Figure 4 The handheld breast pump 1000 further includes a rear cover 200, which seals against the rear end of the breast shield 110. A negative pressure source 300 is disposed through the rear cover 200. The rear 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 cup 120 to deform. Specifically, the rear cover 200 has a through hole, and a 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 sidewall 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 arranged above the ventilation gap 250. In operation, the ventilation gap 250 provides an outlet for the outlet of the exhaust hole 131. The rear cover 200 also shields and protects the outlet of the exhaust hole 131, preventing external pathogens from entering the exhaust hole 131 through the outlet, thereby preventing contamination of the guide tube 130 and the milk storage container 400.

[0068] Furthermore, a positioning slot 115 can be formed on the inner wall of the breast shield 110 defining the rear cavity 112, and a positioning block 210 can be formed on the front side of the rear cover 200. The positioning block 210 is received in the positioning slot 115 and abuts against the suction cup 120. The positioning slot 115 and the positioning block 210 cooperate to position the rear cover 200, thereby ensuring a stable connection between the rear cover 200 and the breast shield 110. Furthermore, the rear cover 200 also abuts against the suction cup 120 to improve its support for the suction cup 120. Even if the suction cup 120 is deformed under negative pressure, it will not easily separate from the breast shield 110, thereby improving the working stability of the suction cup 120 and helping to increase the service life of the flexible tee 100.

[0069] It is worth noting that in order to improve the assembly accuracy of the breast shield 110 and the back cover 200, an assembly boss 116 can be formed on the outer wall of the breast shield 110 away from the rear end. The assembly boss 116 is used to mate with the back cover 200. Specifically, the assembly boss 116 extends in the radial direction of the breast shield 110, and the rear end surface of the assembly boss 116 abuts against the back cover 200.

[0070] In this embodiment, to ensure the sealing performance between the breast shield 110 and the rear cover 200, a second sealing boss 119 is formed on the inner wall of the breast shield 110 defining the front and rear sides, and a second sealing groove 220 is formed on the outer wall of the rear cover 200. The second sealing boss 119 is received in the second sealing groove 220, thereby avoiding a connection gap between the breast shield 110 and the rear cover 200 that would affect the rate of negative pressure generation.

[0071] refer to Figure 1 、 Figure 2 and Figure 6In order to improve the support of the breast shield 110 and prevent the breast shield 110 from being easily deformed during operation and affecting the milk suction effect, the handheld breast pump 1000 can further include a lining assembly 500, which includes an areola shield 510 and a lining frame 530. The areola shield 510 is accommodated in the front cavity 111, and the areola shield 510 is provided with a liquid outlet channel 515, which is connected to the guide tube 130. The lining frame 530 is supported between the areola shield 510 and the breast shield 110, and the strength of the lining frame 530 is greater than the strength of the areola shield 510 and the breast shield 110.

[0072] In operation, after leaving the breast, milk enters the anterior cavity 111, then enters the inner side of the areola shield 510. Under the influence of gravity, it passes through the liquid outlet channel 515 and the one-way flow guide 140 before entering the milk storage container 400. Furthermore, the provision of the inner lining frame 530 enhances the support for the areola shield 510 and the breast shield 110, preventing them from easily deforming during use.

[0073] refer to Figure 6 and Figure 7 In order to prevent the emulsion from passing through the liquid outlet channel 515 due to excessive negative pressure, the liquid isolation membrane 520 can block the emulsion, allowing the blocked emulsion to enter the liquid outlet channel 515, thereby preventing the emulsion from adhering to the surface of the suction bowl 120, thereby helping to improve the collection efficiency of the emulsion.

[0074] Furthermore, in order to avoid the negative impact of the setting of the liquid diaphragm 520 on the formation of negative pressure in the front cavity 111, the liquid diaphragm 520 can be provided with a vent 523, which is used to connect the cavities on both sides of the liquid diaphragm 520, thereby helping to increase the rate of formation of negative pressure in the front cavity 111.

[0075] In some optional 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 barrier membrane 520. Even if some emulsion approaches and adheres to the liquid barrier membrane 520, it will deviate from the vent hole 523 located at the top of the liquid barrier membrane 520 under the influence of gravity, thereby reducing the chance of emulsion leakage and improving the emulsion collection efficiency.

[0076] It should be noted that to facilitate deformation of the suction cup 120 and thereby generate negative pressure in the front cavity 111, the central region of the suction cup 120 can be positioned farther from the front end of the breast shield 110 than the peripheral regions. This allows the strongest negative pressure to be applied to the breast in the central region of the front cavity 111, thereby facilitating efficient milk extraction. Similarly, the central region of the diaphragm 520 can be positioned farther from the front end of the breast shield 110 than the peripheral regions, allowing the outer shape of the diaphragm 520 to closely align with the outer shape of the suction cup 120. This also facilitates generating a high-intensity negative pressure in the central region of the front cavity 111.

[0077] refer to Figure 2 , the rear end of the areola shield 510 can be abutted against the suction cup 120, and the suction cup 120 can be supported in the axial direction, thereby improving the connection stability of the edge of the suction cup 120, thereby preventing the suction cup 120 from separating from the breast shield 110, and preventing the inner wall of the breast shield 110 from being deformed due to the deformation of the suction bowl 120.

[0078] Furthermore, in order to prevent a cavity from being formed between the areola shield 510 and the inner wall of the breast shield 110, thereby affecting the rate of negative pressure formation in 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 that defines the front cavity 111, and the first sealing boss 5121 is accommodated in the first sealing groove 114.

[0079] It should be noted that in other embodiments of the present invention, the positions of the grooves and bosses can be swapped while ensuring the same effect, and there is no specific limitation on the specific setting objects of the grooves and bosses.

[0080] refer to Figure 6 and Figure 7 The areola shield 510 includes a flared section 511 and an extended section 512, arranged sequentially from front to back. The inner diameter of the flared end gradually decreases as it approaches the extended section 512. A backflow prevention buckle 513 is formed at the junction of the flared section 511 and the extended section 512. A liquid outlet channel 515 is provided in the extended section 512. In this embodiment, the flared section 511 is trumpet-shaped and is positioned to cover the breast for milk extraction.

[0081] When the milk is sucked out of the breast, it first passes through the flared section 511 , then enters the extended section 512 , and finally falls into the liquid outlet channel 515 . The anti-backflow buckle 513 can prevent the milk attached to the extended section 512 from flowing toward the flared section 511 .

[0082] In some optional embodiments, in order to improve the relative position accuracy of the areola shield 510 and the breast shield 110, a limiting boss 5122 can be formed on the outer wall of the extension section 512 close to the flared section 511. At the same time, the inner wall of the front cavity 111 of the breast shield 110 is defined to form 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 convenience of disassembly and assembly of the assembly and the breast shield 110, a limiting guide groove 117 is formed on the inner wall of the breast shield 110 that defines the front cavity 111, and a limiting guide boss 531 is formed on the top of the lining frame 530, and the limiting guide boss 531 cooperates 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 section 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 in the embodiment 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 tee 100, thereby reducing the number of parts through structural optimization. While facilitating the breast pumping operation, the handheld breast pump 1000 is 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 providing the exhaust hole 131, and limits the relative height relationship among the outlet and inlet of the exhaust hole 131, the inlet of the milk storage container 400 and the bottom end of the one-way flow guide 140, thereby ensuring that the milk enters the milk storage container 400 smoothly and is difficult to splash to the inlet position 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 a ventilation 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 at the front side of the rear cover 200 and higher than the ventilation gap 250. This facilitates the exhaust operation of the exhaust hole 131 and protects the exhaust hole 131, thereby preventing external pathogens from entering the exhaust hole 131 from the outlet of the exhaust hole 131, thereby preventing the guide tube 130 and the milk storage container 400 from being contaminated.

[0089] (4) The handheld breast pump 1000 can simultaneously support both sides of the edge of the suction cup 120 through the back cover 200 and the areola shield 510. On the one hand, the connection stability of the edge of the suction bowl 120 is improved to prevent the suction bowl 120 from separating from the breast shield 110; on the other hand, the deformation of the suction bowl 120 will not cause the inner wall of the breast shield 110 to deform.

[0090] (5) The handheld breast pump 1000 limits the middle area of ​​the suction bowl 120 to be positioned away from the front end of the breast shield 110 relative to the edge area, and limits the middle area of ​​the diaphragm 520 to be positioned away from the front end of the breast shield 110 relative to the edge area. This helps the suction bowl 120 to deform to drive the front cavity 111 to generate negative pressure, and makes the negative pressure 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 changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A handheld breast pump, characterized in that: include: Flexible three-way joint (100), rear cover (200), negative pressure source (300) and milk storage container (400); The flexible tee (100) comprises a breast shield (110), a suction bowl (120) and a flow guide tube (130), wherein the suction bowl (120) is connected to the breast shield (110), and the suction bowl (120) is used to form a front cavity (111) with the breast, and a rear cavity (112) is formed between the suction bowl (120) and the rear cover (200), and the negative pressure source (300) is connected to the rear cavity (112) through the rear cover (200), and the front cavity (111), the flow guide tube (130) and the milk storage container (400) are connected in sequence from top to bottom, and the breast shield (110), the suction bowl (120) and the flow guide tube (130) are integrally formed; The negative pressure source (300) drives the suction bowl (120) to deform, so that the front chamber (111) generates negative pressure to suck out the milk, and the milk moves toward the milk storage container (400) under the action of gravity.

2. The handheld breast pump according to claim 1, wherein: The flexible tee (100) further includes a one-way flow guide (140); The one-way flow guide (140) is integrally formed with the breast shield (110), the suction bowl (120) and the flow guide tube (130); Alternatively, the one-way air flow guide (140) is detachably connected to the breast shield (110).

3. The handheld breast pump according to claim 2, characterized in that: The breast shield (110) is provided with a liquid guiding groove (113), the liquid guiding groove (113) is in communication with the one-way flow guide (140), and 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, wherein: An exhaust hole (131) is provided on the side wall of the guide tube (130), and the outlet of the exhaust hole (131) is arranged higher than the inlet of the exhaust hole (131).

5. The handheld breast pump according to claim 4, characterized in that The exhaust holes (131) are arranged in a spiral along the circumference of the guide cylinder (130); Alternatively, the exhaust hole (131) is arranged in an arc shape; Alternatively, the exhaust hole (131) is arranged at an angle.

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), and the outlet of the exhaust hole (131) is located at the front side of the rear cover (200) and is arranged higher than the ventilation gap (250).

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

8. The handheld breast pump according to any one of claims 1 to 6, characterized in that: The breast shield (110) defines an inner wall of the rear cavity (112) on which a second sealing boss (119) is formed, and the second sealing boss (119) is used to cooperate with the rear cover (200); And / or, the inner wall of the breast shield (110) defining the rear cavity (112) is formed with a positioning slot (115), and the positioning slot (115) is used to cooperate with the rear cover (200).

9. The handheld breast pump according to any one of claims 1 to 6, characterized in that: An outer wall of the rear end of the breast shield (110) is formed with an assembly boss (116), and the assembly boss (116) is used to cooperate with the rear cover (200).

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

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