CN216136438U - Breast pump host set and breast pump thereof - Google Patents

Abstract

The utility model discloses a breast pump host set and a breast pump thereof. The bottom of host computer is equipped with the installation draw-in groove that is the circle and arranges, and the open end week side of gasbag outwards forms turns over along the structure, turns over along the structure and clamps in installation draw-in groove, and the gasbag borrows to be by turning over along the joint of structure and installation draw-in groove and open detachably and install in the host computer, and the host computer compresses tightly jointly with butt joint portion and turns over along the structure when its and tee bend structure's first end butt joint installation. The breast pump host set has the advantage of being convenient to detach and install. In addition, the utility model also discloses a breast pump.

Description

Breast pump host set and breast pump thereof

Technical Field

The utility model relates to the field of mothers and infants, in particular to a breast pump host machine kit and a breast pump thereof.

Background

A breast pump is a tool for expressing breast milk accumulated in a breast, and is used during lactation. The expressed breast milk is convenient for storage and feeding, and the problem of milk expansion is solved. The traditional breast pump is a manual breast pump, and along with the development of the society and the progress of science and technology, an electric breast pump which is more convenient to use appears.

The gasbag is the indispensable part of electrodynamic type breast pump, and at the in-process of equipment electrodynamic type breast pump, the top edge of gasbag agrees with the cover in the one end of tee bend, and host computer detachably cover is established in the one end of the tee bend that the gasbag was located and is compressed tightly the top edge of gasbag for the stable installation of gasbag, and guarantee sufficient sealed. After the electric breast pump is used, the breast pump needs to be cleaned to ensure safe and sanitary use. When the air bag cleaning machine is cleaned, the main machine needs to be disassembled firstly, and then the air bag is disassembled, so that the disassembly process is complex, and the quick cleaning and the reinstallation are not facilitated.

Therefore, there is a need for a breast pump host set and breast pump thereof that is more convenient to disassemble and assemble to overcome the above-mentioned disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a breast pump host set which is more convenient to disassemble and assemble.

Another object of the utility model is to provide a breast pump which has the advantage of being more convenient to disassemble and assemble.

In order to achieve the purpose, the breast pump main unit suite is suitable for being installed in a butt joint mode with a first end portion of a tee joint structure, a butt joint portion is formed in the first end of the tee joint structure, the breast pump main unit suite comprises a main unit and an air bag, an installation clamping groove arranged in a ring shape is formed in the bottom of the main unit, an edge turning structure is formed on the periphery side of an opening end of the air bag in an outward mode, the edge turning structure is clamped in the installation clamping groove, the air bag is detachably installed on the main unit in an open mode through clamping of the edge turning structure and the installation clamping groove, and when the breast pump main unit suite is installed in the butt joint mode with the first end of the tee joint structure, the main unit and the butt joint portion press the edge turning structure together.

Preferably, the turning structure is arranged in a bending manner towards the bottom of the air bag, and the turning structure and the air bag enclose a butt joint clamping groove for the butt joint part to be inserted and connected.

Preferably, the host comprises a housing, an air pump and a rechargeable battery, an installation cavity is formed in the housing, the air pump and the rechargeable battery are installed in the installation cavity, and the installation clamping groove is formed in the bottom surface of the housing.

Preferably, the bottom of the housing protrudes downwards to form a docking boss, the bottom of the docking boss is provided with an air exhaust hole communicated with the installation inner cavity, the bottom of the housing protrudes downwards to form a docking convex ring surrounding the docking boss, the docking convex ring and the docking boss are arranged at intervals and surround the installation clamping groove, and the docking boss is inserted into the inner cavity of the airbag.

Preferably, the outer side wall of the butt-joint boss protrudes outwards to form a circle of tightening convex ring, and the tightening convex ring is pressed against the inner side wall of the air bag.

Preferably, the host computer still includes a pressure hoop, the pressure hoop includes structural subject, the both ends of structural subject respectively form first installation end and second installation end, structural subject's middle part is two structural ribs that are interval arrangement, first installation end extends towards the direction of second installation end and forms first unsteady pressure muscle, the tip of first unsteady pressure muscle forms the free end structure, the second installation end extends towards the direction of first installation end and forms the unsteady pressure muscle of second, the tip of the unsteady pressure muscle of second forms the free end structure, first unsteady pressure muscle with the unsteady pressure muscle of second is located two between the structural rib, first installation end with the second installation end is installed on the shell, structural rib, first unsteady pressure muscle and the unsteady pressure muscle of second press the air pump on the shell at least.

Preferably, the structural body further forms a pressing end, the pressing end is located at the same end as the second mounting end, and the pressing end presses the rechargeable battery cover on the housing.

In order to achieve the other purpose, the breast pump of the utility model comprises the breast pump main unit set, a three-way structure, a horn sucker and a feeding bottle, wherein the three-way structure is provided with a first end for mounting the breast pump main unit set, a second end for mounting the horn sucker and a third end for mounting the feeding bottle. The milk pump is characterized in that a butt joint part is formed in the first end of the three-way structure, the breast pump host machine kit is detachably in butt joint with the first end of the three-way structure, the host machine and the butt joint part jointly compress the edge turning structure of the air bag, the horn sucker is arranged at the second end of the three-way structure, and the milk bottle is detachably arranged at the third end of the three-way structure.

Preferably, the interior of the first end of the three-way structure extends towards the opening direction thereof to form a butt joint portion arranged in a hollow column shape, the air bag is arranged in the butt joint portion, and the end portion of the butt joint portion presses the edge turning structure of the air bag.

Preferably, the inside of the third end of the three-way structure extends towards the opening direction thereof to form a hollow mounting column, the mounting column is sleeved with a duckbill valve, and the three-way structure is provided with a plurality of vent holes communicated with the inner cavity of the third end of the three-way structure.

Compared with the prior art, the breast pump host machine kit comprises a host machine and an air bag. The bottom of the main machine is provided with a mounting clamping groove which is arranged in a ring shape. The opening end periphery of the air bag outwards forms an edge turning structure, the edge turning structure is clamped in the installation clamping groove, the air bag is detachably installed on the main machine by means of clamping of the edge turning structure and the installation clamping groove, and the main machine and the butt joint part jointly compress the edge turning structure when the main machine kit and the first end of the three-way structure are installed in a butt joint mode. When the host and the butt joint part are compressed together to form the edge turning structure, the sealing of the host set of the breast pump is realized, and the air leakage condition can not occur when the air in the air bag is pumped away. Because the air bag is clamped on the main machine, when the main machine suite of the breast pump is disassembled, the air bag is detached from the three-way structure along with the main machine, so that the effect of quick disassembly is realized, and the breast pump is convenient and quick to clean. After the cleaning operation is completed, the breast pump main machine kit is butted and installed at the first end of the three-way structure again, the main machine and the butting part are compressed again to turn over the edge structure, the sealing of the breast pump main machine kit is realized, the installation process is simple and quick, and the breast pump is convenient to use quickly.

It will be appreciated that the breast pump of the present invention comprises a breast pump host set as described above, a tee structure, a trumpet cup and a feeding bottle. The first end of tee bend structure is formed with butt joint portion in, and breast pump host computer external member detachably installs in tee bend structure's first end, and the host computer compresses tightly the structure of turning over along of gasbag jointly with butt joint portion. Therefore, the breast pump of the utility model has the advantage of more convenient disassembly and assembly.

Drawings

Fig. 1 is a perspective view of a breast pump according to the present invention.

Fig. 2 is a schematic perspective view of the breast pump shown in fig. 1 when the trumpet cap is detached.

Fig. 3 is a perspective view of the breast pump of fig. 1 with the trumpet cup and the bottle detached.

Fig. 4 is a perspective view of the breast pump shown in fig. 1, with the breast pump host set disassembled.

Fig. 5 is a front cross-sectional view of a breast pump of the present invention.

Fig. 6 is an enlarged schematic view of the structure at a in fig. 5.

Fig. 7 is a perspective view of the breast pump host set of the present invention.

Fig. 8 is a schematic perspective view of the host.

Fig. 9 is an exploded view of the host according to the first embodiment.

Fig. 10 is a perspective view of the pressure band of the first embodiment.

Fig. 11 is a schematic perspective exploded view of the horn sucker.

Figure 12 is a schematic perspective view of a three-way configuration in cooperation with a duckbill valve.

Fig. 13 is a perspective view of the airbag.

Fig. 14 is a perspective view of the bladder of fig. 13 at another angle.

Fig. 15 is a schematic perspective exploded view of a breast pump of another configuration.

Fig. 16 is a perspective exploded view of a breast pump of a further configuration.

Fig. 17 is a perspective view of the press band of the second embodiment.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

As shown in fig. 1 to 5, 11, a breast pump 100 of the present invention comprises a breast pump host set 10, a tee structure 20, a trumpet cup 30 and a feeding bottle 40. The tee structure 20 has a first end for mounting the breast pump host set 10, a second end for mounting the horn cup 30 and a third end for mounting the baby bottle 40. The butt joint part 21 is formed in the first end of the three-way structure 20, the breast pump main unit set 10 is detachably installed at the first end of the three-way structure 20 in a butt joint mode, and the main unit 11 (detailed in the following) and the butt joint part 21 are jointly pressed to form the turning edge structure 121 of the air bag 12 (detailed in the following) so as to achieve sealing between the main unit 11 and the air bag 12. The trumpet sucker 30 is mounted at the second end of the tee structure 20, and the feeding bottle 40 is detachably mounted at the third end of the tee structure 20. Preferably, the horn cup 30 comprises a horn cup 31 and a horn cover 32, the horn 31 is detachably mounted in the horn cover 32, and thus the requirements of different people can be met by replacing the horn cups 31 with different sizes and models.

In order to improve the comfort of use, the contact surface of the bell cup 31 is provided with a massage protrusion 311. The massage protrusion 311 is a hollow structure, and specifically, the massage protrusion 311 is an air bag structure, so that the massage protrusion 311 can be pressed more gently onto the breast when the bell cup 31 is used, the pressing feeling of the breast is reduced, and the use feeling is improved. In order to make the horn cup 30 more sanitary, the horn cup 30 further includes a horn cup cover 33 for covering the horn cup 31. The feeding bottle 40 is screwed to the third end of the tee structure 20, and the trumpet sucker 30 is inserted to the second end of the tee structure 20, but not limited thereto. The breast pump main set 10 is mounted in a butt joint with the first end of the three-way structure 20, which means that the breast pump main set 10 and the first end of the three-way structure 20 are mounted together by means of clamping, but not limited thereto.

As shown in fig. 1 to 5 and 12, the inside of the third end of the three-way structure 20 extends toward the opening direction thereof to form a hollow installation column 22, and the installation column 22 is sleeved with a duckbill valve 50. During the process of creating the negative pressure, the duckbill valve 50 is closed by air pressure to prevent the milk from the bottle 40 from being sucked out. When deflated, the duckbill valve 50 opening and the milk being drawn falls into the bottle 40. The tee structure 20 is provided with a plurality of vent holes 23 communicated with the inner cavity of the third end of the tee structure 20, the inner cavity of the third end of the tee structure 20 is communicated with atmospheric pressure through the vent holes 23, the internal air pressure of the milk bottle 40 is balanced, and breast milk smoothly falls into the milk bottle 40.

As shown in fig. 4 to 8, the breast pump host set 10 includes a host 11 and an airbag 12. The bottom of the main body 11 is provided with a mounting slot 111 arranged in a ring shape. The peripheral side of the opening end of the air bag 12 forms an outward turned edge structure 121, the turned edge structure 121 is clamped in the installation clamping groove 111, the air bag 12 is detachably installed on the main unit 11 by clamping the turned edge structure 121 and the installation clamping groove 111, and the main unit 11 and the butt joint part 21 press the turned edge structure 121 together when the main unit 10 is installed in butt joint with the first end of the tee joint structure 20. When the main unit 11 and the abutting part 21 press the edge-turning structure 121 together, the main unit set 10 of the breast pump is sealed, and air leakage does not occur when air in the air bag 12 is pumped away. Because the air bag 12 is clamped on the main machine 11, when the main machine set 10 of the breast pump is disassembled, the air bag 12 is disassembled from the three-way structure 20 along with the main machine 11, the effect of quick disassembly is realized, and the cleaning is convenient and quick. After the cleaning operation is completed, the breast pump main unit set 10 is installed at the first end of the three-way structure 20 in a butting mode, the main unit 11 and the butting portion 21 compress the edge turning structure 121 again, sealing of the breast pump main unit set 10 is achieved, the installation process is simple and rapid, and rapid use of the breast pump 100 is facilitated.

As shown in fig. 4 to 8 and 13, the interior of the first end of the three-way structure 20 extends toward the opening direction thereof to form a butt joint portion 21 arranged in a hollow column shape, the airbag 12 is disposed inside the butt joint portion 21, and the end of the butt joint portion 21 presses the turned-over structure 121. The abutment 21 is provided to facilitate compression of the flange structure 121. Of course, the abutting portion 21 may have another shape, for example, a ring-shaped structure. Preferably, the turned-over edge structure 121 is bent toward the bottom of the airbag 12, and the turned-over edge structure 121 and the airbag 12 enclose a docking slot 122 for the docking portion 21 to be plugged in. The abutting clamping groove 122 is arranged to facilitate the abutting of the air bag 12 and the abutting part 21, and the abutting part 21 can press the air bag 12 more stably.

As shown in fig. 13 and 14, an inner spiral protrusion structure 123 protrudes from the lower end of the inner cavity of the airbag 12, an outer spiral groove structure 124 corresponding to the inner spiral protrusion structure 123 is disposed on the outer sidewall of the airbag 12, and the strength and rigidity of the airbag 12 are improved by the inner spiral protrusion structure 123 and the outer spiral groove structure 124. Specifically, during the air extraction process, the lower end of the air bag 12 can move integrally close to the main unit 11 without deformation, so that the air extraction process is more gradual, and at the final stage of air extraction, the lower end of the air bag 12 is still supported and cannot be tightly attached to the butt-joint boss 1121, so that the air extraction hole 1122 is prevented from being blocked.

As shown in fig. 9, the main unit 11 includes a housing 112, an air pump 113, and a rechargeable battery 114. An installation cavity (not labeled) is arranged in the housing 112, the air pump 113 and the rechargeable battery 114 are installed in the installation cavity, and the installation clamping groove 111 is arranged on the bottom surface of the housing 112. The rechargeable battery 114 supplies power to the air pump 113, and the breast pump 100 can be used outdoors or in the absence of an external power source, thereby improving the flexibility of use. Preferably, the housing 112 is a split structure to facilitate manufacturing and to facilitate assembly of the various components. In order to facilitate control of the breast pump 100, such as switching between operating modes and adjusting the intensity of operation, a plurality of buttons are mounted on the housing 112, and the operating mode and/or intensity of the breast pump 100 can be adjusted by depressing different buttons.

As shown in fig. 7 and 8, a docking boss 1121 protrudes downward from the bottom of the housing 112, an air exhaust hole 1122 communicating with the installation cavity is formed in the bottom of the docking boss 1121, a docking collar 1123 surrounding the docking boss 1121 protrudes downward from the bottom of the housing 112, the docking collar 1123 and the docking boss 1121 are arranged at intervals and surround the installation slot 111, and the docking boss 1121 is inserted into the cavity of the airbag 12. During installation, the air bag 12 is sleeved on the abutting-joint boss 1121, and the turned-over edge structure 121 is clamped into the installation clamping groove 111 along the abutting-joint boss 1121, so that the air bag 12 is installed more quickly and accurately. Preferably, the height of the abutment projection 1121 is greater than the height of the abutment projection 1123, i.e., the abutment projection 1121 protrudes downward beyond the abutment projection 1123, so as to facilitate the installation of the airbag 12 and to enable the airbag 12 to be more stably installed. The docking bosses 1121 are arranged in a cylindrical configuration, and the docking collar 1123 is arranged in a circular ring shape, but is not limited thereto. The outer side wall of the abutting boss 1121 is extended with a ring of tightening convex ring 1124, and the tightening convex ring 1124 presses against the inner side wall of the airbag 12. After the tightening convex ring 1124 presses the inner side wall of the airbag 12, the airbag 12 can be more stably installed on the main body 11.

Preferably, a protrusion structure protrudes from the bottom of the docking boss 1121 at the air exhaust hole 1122, the air exhaust hole 1122 penetrates through the protrusion structure, the end surface of the protrusion structure is provided with a vent groove 1126 communicated with the air exhaust hole 1122, and the vent groove 1126 penetrates through the side surface of the protrusion structure. Although the air bag 12 may be deformed and attached to the end surface of the convex structure during air suction, and the air suction hole 1122 may be closed, the vent groove 1126 is provided to prevent the air suction hole 1122 from being completely blocked, thereby facilitating air suction. For example, but not limited to, the end face of the protruding structure has 4 vent grooves 1126.

As shown in fig. 9 and 10, the host 11 further includes a clamp 115, the clamp 115 including a structural body 1151, and each of two ends of the structural body 1151 defines a first mounting end 1152 and a second mounting end 1153. The middle part of the structure main body 1151 is provided with two structural ribs which are arranged at intervals, the first mounting end 1152 extends towards the second mounting end 1153 to form a first floating pressure rib 1154, and the end part of the first floating pressure rib 1154 forms a free end structure. Second mounting end 1153 extends towards first mounting end 1152 and forms second floating bead 1155, the end of second floating bead 1155 forms the free end structure, first floating bead 1154 and second floating bead 1155 are located between the two structural ribs, first mounting end 1152 and second mounting end 1153 are mounted on housing 112, and the structural ribs, first floating bead 1154 and second floating bead 1155 press at least air pump 113 against housing 112.

In this embodiment, the rechargeable battery 114 is disposed laterally, the rechargeable battery 114 is disposed beside the air pump 113, and the structural ribs, the first floating bead 1154 and the second floating bead 1155 press the air pump 113 and the rechargeable battery 114 against the housing 112. Thus, the air pump 113 and the rechargeable battery 114 can be more easily mounted and dismounted. Further, by providing the first floating bead 1154 and the second floating bead 1155, it is possible to simultaneously remove the tolerance of the air pump 113 itself, the tolerance between the air pump 113 and the housing 112, the tolerance of the rechargeable battery 114 itself, the tolerance between the rechargeable battery 114 and the housing 112, and the tolerance between the air pump 113 and the rechargeable battery 114 during the mounting process, and to achieve stable mounting of the air pump 113 and the rechargeable battery 114.

As shown in fig. 15 and 16, in order to make the design of the breast pump 100 more versatile and appealing to customers, the present invention additionally provides two other models of the breast pump 100, which are different from the above-described breast pump in the appearance.

Further, as shown in fig. 14 to 16, other types of structures of the pressure band compression air pump 113 and the rechargeable battery 114, for example, the pressure band 115' of the second embodiment, may be used according to practical needs. The press band 115' of the second embodiment has substantially the same structure as the press band 115 of the above embodiment, except that: the structural body 1151 further defines a capping end 1156, the capping end 1156 being at the same end as the second mounting end 1153, the capping end 1156 capping the rechargeable battery 114 to the housing 112. Sometimes, in order to simplify the structure, enrich the functions or simplify the installation manner, the adjustment of the parts of the main machine 11 is required, for example, the rechargeable battery 114 is sometimes required to be vertically placed, and then the rechargeable battery 114 is covered and pressed by the covering and pressing end 1156, so that the rechargeable battery 114 is stably installed, and the tolerance existing in the above first embodiment can also be eliminated. For example, the cap pressing end 1156 is in the form of a sleeve, and the cap pressing end 1156 covers the rechargeable battery 114.

As shown in fig. 8, 9, 15 and 16, the host 11 further includes a solenoid valve 116, the solenoid valve 116 is installed in the installation cavity, the pressing hoop 115 (115') presses the solenoid valve 116 tightly, the bottom of the docking boss 1121 is further provided with an air vent 1125, and the solenoid valve 116 is communicated with the air vent 1125. When the air pump 113 evacuates, the electromagnetic valve 116 is closed, and after evacuation, the electromagnetic valve 116 is opened, so that the inner cavity of the airbag 12 is communicated with the external atmospheric pressure again, and the airbag 12 is restored. Of course, other devices may be used instead of the solenoid valve 116, such as an air blowing device, which is closed during air suction and blows air into the cavity of the air bag 12 after air suction, so that the air bag 12 recovers its original shape more quickly.

The following description of the operating principle of the breast pump 100 is provided: when in use, the trumpet cup cover 33 is opened, the trumpet cup 31 is covered on the breast of a human body, and the trumpet cup 31 is sealed by utilizing the skin. When the machine key is pressed down, the air pump 113 pumps air in the air bag 12, the electromagnetic valve 116 is closed, negative pressure is formed in the three-way structure 20, the negative pressure acts on the human breast to suck breast milk out, and the opening of the duckbill valve 50 is closed under the action of pressure. After a period of time, the breast milk is sucked out, the air pump 113 stops working, the electromagnetic valve 116 is opened, the inner cavity of the air bag 12 is communicated with the external atmospheric pressure, the air bag 12 is restored to the original state, the opening of the duckbill valve 50 is opened, and the sucked breast milk falls into the milk bottle 40. In this way, the alternate operation of the air pump 113 and the electromagnetic valve 116 simulates the sucking action of the baby, thereby realizing the process of sucking breast milk.

The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the utility model, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the utility model.

Claims (10)

1. The utility model provides a breast pump host computer external member, is suitable for the first end butt joint installation with tee bend structure, be formed with butt joint portion in tee bend structure's the first end, breast pump host computer external member includes host computer and gasbag, its characterized in that, the bottom of host computer is equipped with the installation slot that is the circle and arranges, the outside formation in open end week side of gasbag turns over along the structure, turn over along the structure clamp in the installation slot, the gasbag borrow by turn over along structure and installation slot's joint and be division detachably and install in the host computer, breast pump host computer external member its with when tee bend structure's first end butt joint installation the host computer compresses tightly jointly with butt joint portion turns over along the structure.

2. The breast pump host set according to claim 1, wherein the flange structure is bent toward the bottom of the air bag, and the flange structure and the air bag enclose a docking slot for the docking portion to be docked.

3. The breast pump host kit according to claim 1, wherein the host comprises a housing, an air pump and a rechargeable battery, wherein a mounting cavity is formed in the housing, the air pump and the rechargeable battery are mounted in the mounting cavity, and the mounting slot is formed in the bottom surface of the housing.

4. The breast pump host kit according to claim 3, wherein a docking boss protrudes downward from the bottom of the housing, an air suction hole communicated with the mounting cavity is formed in the bottom of the docking boss, a docking convex ring surrounding the docking boss protrudes downward from the bottom of the housing, the docking convex ring and the docking boss are arranged at an interval and surround the mounting slot, and the docking boss is inserted into the cavity of the air bag.

5. The breast pump host kit according to claim 4, wherein the outer side wall of the docking boss is outwardly protruded with a ring of tightening convex ring, and the tightening convex ring is pressed against the inner side wall of the air bag.

6. The breast pump host kit as set forth in claim 3 wherein the host further comprises a clamp, the press hoop comprises a structure main body, a first mounting end and a second mounting end are respectively formed at two ends of the structure main body, the middle part of the structure main body is provided with two structural ribs which are arranged at intervals, the first mounting end extends towards the direction of the second mounting end to form a first floating pressing rib, the end part of the first floating pressing rib forms a free end structure, the second mounting end extends towards the direction of the first mounting end to form a second floating pressing rib, the end part of the second floating pressing rib forms a free end structure, the first floating pressing rib and the second floating pressing rib are positioned between the two structural ribs, the first mounting end and the second mounting end are mounted on the shell, and the structural rib, the first floating pressing rib and the second floating pressing rib press the air pump on the shell at least.

7. The breast pump host kit as set forth in claim 6 wherein the structural body further forms a cap pressing end at the same end as the second mounting end, the cap pressing end pressing the rechargeable battery cap against the housing.

8. A breast pump comprising a breast pump host set, a three-way structure, a horn sucker and a feeding bottle, wherein the three-way structure comprises a first end for mounting the breast pump host set, a second end for mounting the horn sucker and a third end for mounting the feeding bottle, the breast pump host set is as claimed in any one of claims 1 to 7, a butt joint part is formed in the first end of the three-way structure, the breast pump host set is detachably butt-jointed and mounted at the first end of the three-way structure, the host and the butt joint part jointly compress a turning edge structure of an air bag, the horn sucker is mounted at the second end of the three-way structure, and the feeding bottle is detachably mounted at the third end of the three-way structure.

9. The breast pump as set forth in claim 8 wherein the interior of the first end of the three-way structure extends toward the opening thereof to form a hollow cylindrical abutment, the bladder is disposed in the abutment, and the end of the abutment presses the edge-turning structure of the bladder.

10. The breast pump as set forth in claim 9 wherein the interior of the third end of the three-way structure extends toward the opening thereof to form a hollow mounting post, the mounting post is sleeved with a duckbill valve, and the three-way structure is provided with a plurality of vent holes communicating with the inner cavity of the third end of the three-way structure.

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