Wearable breast pump

Abstract

The utility model belongs to the technical field of mother and baby products, and discloses a wearable breast pump which comprises a negative pressure mechanism used for providing negative pressure, the negative pressure mechanism comprises a suction bowl, a connecting assembly and a motor, the suction bowl is provided with a negative pressure cavity, and the motor drives the connecting assembly to move to enable the suction bowl to deform so as to increase or reduce the space of the negative pressure cavity; the protective cover flange is used for being attached to the chest, the protective cover flange comprises a breast pumping channel, the breast pumping channel is provided with a first opening and a second opening, the breast pumping channel is communicated with the negative pressure cavity through the first opening, and the second opening is arranged to allow milk to flow out; the shield flange is attached to the breast to form a vacuum chamber, and the vacuum chamber is configured to be communicated with the breast pumping channel. The breast pump can keep the negative pressure stable, is low in noise and light in weight so as to reduce the load-bearing feeling of the breast, is convenient to carry, and improves the user experience feeling of a breast pump user.

Description

Technical Field

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

[0002] A breast pump is an auxiliary device used by breastfeeding mothers to collect breast milk, enabling convenient, safe, and efficient milk collection.

[0003] In existing technology, breast pumps contain an electrically driven air pump that creates negative pressure suction airflow between the pump and the breast. This suction airflow squeezes the breast and nipple, drawing milk from the breast and storing it in a bottle. The air pump is directly mounted on the main unit's casing. Users often pump intermittently, requiring frequent switching of the vacuum pump. The operation of the vacuum pump generates significant vibration and noise. Commonly used pumps include diaphragm vacuum pumps, piston vacuum pumps, and ceramic piezoelectric pumps. Diaphragm and piston vacuum pumps are typically around 40cm in size, produce around 40db of noise, and weigh over 100g, resulting in poor portability due to their large size, high noise level, and heavy weight. While ceramic piezoelectric pumps are smaller, their power is lower, producing weaker suction airflow and insufficient negative pressure, negatively impacting the user experience. Utility Model Content

[0004] This application provides a wearable breast pump that can maintain stable negative pressure during use, and is quiet and lightweight, which can reduce the burden on the breasts, facilitates portability, and improves the user experience of the breast pump user.

[0005] The wearable breast pump provided in this application adopts the following technical solution:

[0006] A wearable breast pump includes:

[0007] A negative pressure mechanism for providing negative pressure includes a suction bowl, a connecting assembly, and a motor. The suction bowl has a negative pressure chamber. The motor drives the connecting assembly to move, causing the suction bowl to deform to increase or decrease the space of the negative pressure chamber.

[0008] A breast shield flange is used to fit the breast. The breast shield flange includes a breast suction channel. The breast suction channel is provided with a first opening and a second opening. The breast suction channel is connected to the negative pressure chamber through the first opening. The second opening is provided to allow milk to flow out.

[0009] The protective flange fits against the breast to form a vacuum chamber, which is configured to communicate with the breast suction channel.

[0010] Optionally, the connecting assembly includes a connecting element that is fixedly or detachably connected to the suction bowl.

[0011] Optionally, the connecting assembly includes a connecting element that is connected to the bottom of the suction bowl.

[0012] Optionally, the connecting assembly includes a connecting element that is connected to the central region of the bottom of the suction bowl.

[0013] Optionally, the connecting assembly includes a connecting rod, the suction bowl has a connecting groove, and the connecting rod has a connecting part that can be detachably connected to the connecting groove.

[0014] Optionally, a suction bowl mounting component is included. The suction bowl mounting component is used to install the suction bowl, and in use, the suction bowl mounting component is sealed to the suction bowl. The suction bowl mounting component is connected to the breast pumping channel, and the suction bowl mounting component has a negative pressure opening, which communicates with the first opening.

[0015] Optionally, the suction bowl mount is connected above the breast pump channel.

[0016] Optionally, the connecting assembly includes a connecting rod and an eccentric wheel. The eccentric wheel is connected to the output shaft of the motor. One end of the connecting rod is connected to the suction cup, and the other end is connected to the eccentric wheel. The motor drives the eccentric wheel to rotate, thereby causing the connecting rod to reciprocate linearly.

[0017] Optionally, the breast pump further includes a housing, which, together with the protective flange, forms a milk storage chamber. The milk storage chamber communicates with the second opening and is configured to collect milk flowing in from the second opening.

[0018] Optionally, the negative pressure mechanism can be detached from the housing.

[0019] Optionally, the negative pressure mechanism can be removed from the protective flange.

[0020] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0021] During use, the protective flange is fitted against the chest to form a vacuum chamber. The motor starts to drive the connecting assembly, which deforms the suction bowl to increase the space of the negative pressure chamber. During this period, a negative pressure is formed in the vacuum chamber, thereby squeezing the breast and nipple to draw milk out of the breast. Under the action of negative pressure, the milk flows through the first opening of the milk suction channel into the suction bowl. The motor continues to drive the connecting assembly, which deforms the suction bowl to decrease the space of the negative pressure chamber. During this period, a positive pressure is formed in the vacuum chamber, causing the milk temporarily stored in the suction bowl to flow back into the milk suction channel through the first opening under the action of positive pressure, and then flow out through the second opening. The breast pump of this application uses a motor-driven connecting assembly to change the size of the negative pressure chamber space of the suction bowl to achieve negative or positive pressure. Compared with various air pumps in the prior art, the motor and connecting assembly can maintain stable negative pressure during use, with low noise, light weight and small size, thereby reducing the burden on the chest, which is conducive to portability and improves the user experience of the breast pump. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of a wearable breast pump disclosed in an embodiment of this application;

[0024] Figure 2 This is a cross-sectional view of the overall structure of a wearable breast pump disclosed in an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the structure of a wearable breast pump with its outer shell hidden, as disclosed in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of a wearable breast pump disclosed in this application when the eccentric wheel rotates to the lower end of the first through hole;

[0027] Figure 5 This is a schematic diagram of the structure of a wearable breast pump disclosed in an embodiment of this application when the eccentric wheel rotates to the high end of the first through hole;

[0028] Figure 6 This is a schematic diagram showing the structure of a wearable breast pump with the isolation chamber and negative pressure mechanism removed from the outer shell, as disclosed in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Negative pressure mechanism; 11. Suction bowl; 113. Negative pressure chamber; 12. Connecting assembly; 121. Connecting rod; 1211. First connecting end; 1212. First through hole; 1213. Second connecting end; 122. Eccentric wheel; 13. Motor; 14. Suction bowl mounting part; 141. Negative pressure opening; 2. Protective flange; 21. Milk suction channel; 211. First opening; 212. Second opening; 3. One-way valve; 4. Outer shell; 41. Locking block; 42. Locking groove; 5. Milk storage chamber; 6. Battery; 7. Isolation chamber; 71. Cover; 72. Partition; 721. Second through hole; 8. Control circuit board. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] This application provides a wearable breast pump that can maintain stable negative pressure during use, and is quiet and lightweight, which can reduce the burden on the breasts, facilitates portability, and improves the user experience of the breast pump user.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0034] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Please see Figure 1 and Figure 2This is one embodiment of a wearable breast pump in this application, including a negative pressure mechanism 1, a protective flange 2, and a housing 4. The negative pressure mechanism 1 provides negative pressure, the protective flange 2 conforms to the breast, and the housing 4 and the protective flange 2 enclose a milk storage chamber 5 for collecting breast milk. In use, the protective flange 2 is fitted against the breast to form a vacuum chamber, which is connected to the milk storage chamber 5. The negative pressure mechanism 1 is activated to create negative pressure in the vacuum chamber, thereby squeezing the breast and nipple to draw breast milk out. The milk flows through the protective flange 2 into the milk storage chamber 5 for collection.

[0036] Specifically, the negative pressure mechanism 1 includes a suction bowl 11, a connecting assembly 12, and a motor 13. The suction bowl 11 has a negative pressure chamber 113. The motor 13 drives the connecting assembly 12 to move, causing the suction bowl 11 to deform and increase or decrease the space of the negative pressure chamber 113. By using the motor 13 to drive the connecting assembly 12 to change the size of the negative pressure chamber 113 of the suction bowl 11 to achieve negative or positive pressure, compared with various air pumps in the prior art, the motor 13 and the connecting assembly 12 can maintain stable negative pressure during use, and are quiet and lightweight, reducing the burden on the breast, facilitating portability, and improving the user experience of the breast pump.

[0037] The protective flange 2 includes a milk suction channel 21, which has a first opening 211 and a second opening 212. The first opening 211 is located above the milk suction channel 21, and the second opening 212 is located below the milk suction channel 21. The milk suction channel 21 is located inside the milk storage chamber 5. The milk suction channel 21 is connected to the negative pressure chamber 113 through the first opening 211 and to the milk storage chamber 5 through the second opening 212. The milk storage chamber 5 collects the milk flowing in through the second opening 212.

[0038] Furthermore, a one-way valve 3 is provided at the end of the second opening 212 to control its opening and closing. The one-way valve 3 controls the opening of the second opening 212 to connect the milk suction channel 21 and the milk storage chamber 5, allowing milk in the milk suction channel 21 to flow into the milk storage chamber 5 through the second opening 212. Conversely, the one-way valve 3 controls the closing of the second opening 212 to block the connection between the milk suction channel 21 and the milk storage chamber 5, thus preventing milk in the milk storage chamber 5 from flowing back through the second opening 212 under the action of the negative pressure mechanism 1. In this embodiment, the one-way valve 3 closes when the space of the negative pressure chamber 113 increases and opens when the space of the negative pressure chamber 113 decreases.

[0039] The protective flange 2 fits against the breast to form a vacuum chamber, which is configured to communicate with the breast suction channel 21. During use, the protective flange 2 is fitted to the chest to form a vacuum chamber. The motor 13 is started to drive the connecting assembly 12 to move. The connecting assembly 12 causes the suction bowl 11 to deform, increasing the space of the negative pressure chamber 113. The one-way valve 3 controls the second opening 212 to close, sealing the vacuum chamber. During this period, the vacuum chamber forms a negative pressure, thereby squeezing the breast and nipple to draw milk from the breast. Under the action of negative pressure, the milk passes through the first opening 211 of the milk suction channel 21 into the suction bowl 11. The motor 13 continues to drive the connecting assembly 12 to move, causing the connecting assembly 12 to deform the suction bowl 11 to reduce the space of the negative pressure chamber 113. During this period, the vacuum chamber forms a positive pressure, causing the one-way valve 3 to control the second opening 212 to open. The milk temporarily stored in the suction bowl 11 flows back to the milk suction channel 21 through the first opening 211 under the action of positive pressure, and then flows out through the second opening 212 into the milk storage chamber 5, completing the collection of milk.

[0040] Please see Figure 2 and Figure 4 The negative pressure mechanism 1 also includes a suction bowl mounting component 14, which is used to mount the suction bowl 11. In use, the suction bowl mounting component 14 is sealed to the suction bowl 11, forming a sealed negative pressure chamber 113. The suction bowl mounting component 14 is connected to the breast pumping channel 21 and has a negative pressure opening 141 that communicates with the first opening 211. In this embodiment, the suction bowl mounting component 14 is connected above the breast pumping channel 21 and fixedly connected to the protective flange 2, with the negative pressure opening 141 corresponding to the first opening 211. The suction bowl mounting 14 is tilted, with the negative pressure opening 141 and the first opening 211 positioned at the lower end of the suction bowl mounting 14. This allows the milk temporarily stored in the negative pressure chamber 113 to flow out completely through the first opening 211 at the lower end of the suction bowl mounting 14 during positive pressure in the vacuum chamber, reducing milk residue in the negative pressure chamber 113. The suction bowl 11 can also be tilted or horizontally positioned. The suction bowl 11 is preferably made of silicone. Under the force of the connecting component 12, the suction bowl mounting 14 can deform to disperse and absorb external pressure or tension, withstand large strain from the connecting component 12 without easily breaking, and the suction bowl 11 can return to its initial shape under force, occupying less space and suitable for applications with limited space.

[0041] Based on the overall size of the wearable breast pump, the motor 13 is preferably a rotary motor. In some embodiments, the connecting assembly 12 includes a connecting element that is connected to or detachably connected to the suction bowl 11. The connecting element converts the rotational motion of the motor 13 into linear motion. One end of the connecting element is connected to the motor 13, and the other end is connected to the suction bowl 11, causing the suction bowl 11 to deform to increase or decrease the space of the negative pressure chamber 113. The connecting element can be selected from one of the following: a connecting rod, a connecting rope, a lead screw nut, a worm gear, or a cam linkage. When a connecting rope is preferred, the connecting element and the suction bowl 11 can be integrally formed, with the end of the connecting rope away from the suction bowl 11 located on the output shaft of the motor 13. When a connecting rod is preferred, the end of the connecting rod away from the suction bowl 11 is located on the output shaft of the motor 13. Driven by the motor 13, the connecting rod moves closer to or away from the suction bowl 11. A detachable connection between the connecting element and the suction bowl 11 allows the connecting element to be removed from the suction bowl 11 for easy cleaning of the suction bowl 11.

[0042] In some other embodiments, the connecting element is connected to the bottom of the suction bowl 11. The bottom of the suction bowl 11 has the largest area, and when the connecting element applies force to the bottom of the suction bowl 11, it allows the suction bowl 11 to deform more easily to increase or decrease the space of the negative pressure chamber 113. In other embodiments, the connecting element is connected to the central region of the bottom of the suction bowl 11. The edge of the suction bowl 11 typically has higher strength, concentrating the force in the central region allows for more efficient and even force transmission, enabling the soft rubber bowl to better withstand impact or vibration loads; secondly, because the force point is clearly defined, it facilitates optimization of the connecting element's structural design.

[0043] In this embodiment, please refer to Figure 3 and Figure 4 The connecting assembly 12 includes a connecting rod 121 and an eccentric wheel 122. The eccentric wheel 122 is located on the output shaft of the motor 13. One end of the connecting rod 121 is connected to one end of the suction bowl 11, and the other end contacts and presses against the eccentric wheel 122. The motor 13 drives the eccentric wheel 122 to rotate, thereby causing the connecting rod 121 to reciprocate linearly, expanding or compressing the suction bowl 11. To increase the rotation radius of the eccentric wheel 122, the eccentric wheel 122 is connected to the output shaft of the motor 13 via a connecting rod. Under the action of the eccentric wheel 122, the connecting rod 121 achieves linear reciprocating motion, reducing the space occupied and thus reducing the overall size of the breast pump.

[0044] Please see Figure 4 and Figure 5The suction bowl 11 has a connecting groove, and the connecting rod 121 has a connecting part that can be detachably connected to the connecting groove. The connecting rod 121 and the suction bowl 11 are detachably connected through the connecting rod and the connecting groove, so that the connecting rod 121 can be removed from the suction bowl 11 for easy cleaning. In this embodiment, the connecting rod 121 includes a first connecting end 1211 connected to the eccentric wheel 122 and a second connecting end 1213 connected to the suction bowl 11. The first connecting end 1211 and the second connecting end 1213 are arranged opposite to each other, and the second connecting end 1213 is the connecting part that is detachably connected to the connecting groove. The motor 13 drives the eccentric wheel 122 to rotate to contact and press against the first connecting end 1211, thereby driving the first connecting end 1211 to rise and fall, and then driving the second connecting end 1213 to rise and fall synchronously, so that the suction bowl 11 deforms.

[0045] Specifically, the first connecting end 1211 is provided with a first through hole 1212, which is an oblong hole. The eccentric wheel 122 is located inside the first through hole 1212 and rotates along the inner peripheral wall of the first through hole 1212. The first through hole 1212 has a high end and a low end. The high end of the first through hole 1212 is the upper end face of the inner wall of the first through hole 1212, and the low end of the first through hole 1212 is the lower end face of the inner wall of the first through hole 1212. The vertical distance between the high end of the first through hole 1212 and the suction cup 11 is greater than the vertical distance between the low end of the first through hole 1212 and the suction cup 11. When the eccentric wheel 122 rotates to the high end of the first through hole 1212, the connecting rod 121 moves away from the suction bowl 11 to expand the suction bowl 11 and thus increase the space of the negative pressure chamber 113; when the eccentric wheel 122 rotates to the low end of the first through hole 1212, the connecting rod 121 moves toward the suction bowl 11 to compress the suction bowl 11 and thus reduce the space of the negative pressure chamber 113.

[0046] Motor 13 drives eccentric wheel 122 to rotate. When eccentric wheel 122 rotates to the high end of the first through hole 1212, connecting rod 121 moves away from suction bowl 11. At this time, the distance between the first connecting end 1211 and suction bowl 11 is the farthest. The second connecting end 1213 causes suction bowl 11 to deform, thereby increasing the space of negative pressure chamber 113 and forming negative pressure. This causes one-way valve 3 to close and block the second opening 212. When eccentric wheel 122 passes the high end of the first through hole 1212 and continues to rotate to the low end of the first through hole 1212, connecting rod 121 moves toward suction bowl 11. At this time, the distance between the first connecting end 1211 and suction bowl 11 is the closest. The second connecting end 1213 presses against suction bowl 11 to deform and compress suction bowl 11, thereby reducing the space of negative pressure chamber 113 and forming positive pressure. This causes one-way valve 3 to open so that milk flows into milk storage chamber 5 through second opening 212.

[0047] Please see Figure 2 and Figure 3The breast pump also includes a battery 6 and a control circuit board 8. The battery 6 is electrically connected to the motor 13, which is configured to receive power from the battery 6. Both the one-way valve 3 and the motor 13 are electrically connected to the control circuit board 8, which in turn is electrically connected to the battery 6. The control circuit board 8 controls the activation of the one-way valve 3 and the motor 13, precisely sending electrical signals to them to achieve operations such as opening and closing the one-way valve 3, starting and closing the motor 13, and adjusting the speed, thus improving the response accuracy and working efficiency of the breast pump.

[0048] Please see Figure 2 and Figure 6 To isolate the motor 13, battery 6, and control circuit board 8, the breast pump is equipped with an isolation chamber 7. The isolation chamber 7 is located at the upper end of the breast pump, and it and the milk storage chamber 5 are located at opposite ends of the breast pump to balance the weight at both ends. The isolation chamber 7 includes a cover 71 and a partition 72 for mounting the motor 13 and battery 6. The partition 72 is detachably mounted to the outer shell 4, and the cover 71 covers the partition 72 and is detachably connected to the outer shell 4. The isolation chamber 7 can be completely removed from the outer shell 4. A suction bowl 11 is located on the side of the partition 72 facing away from the motor 13, and there is a gap between the suction bowl 11 and the partition 72 to allow for deformation of the suction bowl 11. The partition 72 is bent and generally L-shaped to increase the space of the isolation chamber 7. The partition 72 has a second through hole 721 for a connecting rod 121 to pass through. The connecting rod 121 slides with the partition 72 to increase or decrease the negative pressure chamber 113. In this embodiment, the cover 71 is arc-shaped and smoothly connected to the outer shell 4. The cover 71 and the outer shell 4 form a spherical surface, which makes it easy to wear the breast pump.

[0049] Please see Figure 2 and Figure 6To facilitate cleaning of the breast pump, the negative pressure mechanism 1 can be removed from the outer casing 4. Specifically, a locking block 41 is provided on the end face of the outer casing 4 closest to the isolation chamber 7. The locking block 41 and the inner wall of the suction bowl mounting part 14 form a locking groove 42. The edge of the suction bowl 11 is interference-fitted into the locking groove 42, thereby achieving a sealed connection between the suction bowl 11 and the suction bowl mounting part 14. When the isolation chamber 7 is removed, the partition 72 releases its obstruction to the suction bowl 11, and the edge of the suction bowl 11 is removed from the locking groove 42, thereby achieving separation between the suction bowl 11 and the suction bowl mounting part 14. This allows the suction bowl 11, the connecting assembly 12, and the motor 11 to be removed from the outer casing 4, facilitating cleaning of the suction bowl 11 and the suction bowl mounting part 14. By removing the outer casing 4 and the protective flange 2, the protective flange 2 and the milk storage chamber 5 can be cleaned. In some other embodiments, the negative pressure mechanism 1 can be removed from the protective flange 2. Since the suction bowl mounting part 14 can be integrally formed with the protective flange 2, the suction bowl 11 can be considered to be removed from the protective flange 2. The removal principle is similar to that of the negative pressure mechanism 1 being removed from the outer shell 4, and will not be described in detail here.

[0050] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wearable breast pump, characterized in that, include: A negative pressure mechanism for providing negative pressure includes a suction bowl, a connecting assembly, and a motor. The suction bowl has a negative pressure chamber. The motor drives the connecting assembly to move, causing the suction bowl to deform to increase or decrease the space of the negative pressure chamber. A breast shield flange is used to fit the breast. The breast shield flange includes a breast suction channel. The breast suction channel is provided with a first opening and a second opening. The breast suction channel is connected to the negative pressure chamber through the first opening. The second opening is provided to allow milk to flow out. The protective flange fits against the breast to form a vacuum chamber, which is configured to communicate with the breast suction channel.

2. The wearable breast pump according to claim 1, characterized in that, The connecting assembly includes a connecting element, which is fixedly or detachably connected to the suction bowl.

3. A wearable breast pump according to claim 1, characterized in that, The connecting assembly includes a connecting element that is connected to the bottom of the suction bowl.

4. A wearable breast pump according to claim 1, characterized in that, The connecting assembly includes a connecting element that is connected to the central region of the bottom of the suction bowl.

5. A wearable breast pump according to claim 1, characterized in that, The connecting assembly includes a connecting rod, the suction bowl has a connecting groove, and the connecting rod has a connecting part that can be detachably connected to the connecting groove.

6. A wearable breast pump according to claim 1, characterized in that, The device includes a suction bowl mounting component for mounting the suction bowl. In use, the suction bowl mounting component is sealed to the suction bowl and connected to the breast milk suction channel. The suction bowl mounting component has a negative pressure opening that communicates with the first opening.

7. A wearable breast pump according to claim 6, characterized in that, The suction bowl is attached above the breast pumping channel.

8. A wearable breast pump according to claim 1, characterized in that, The connecting assembly includes a connecting rod and an eccentric wheel. The eccentric wheel is connected to the output shaft of the motor. One end of the connecting rod is connected to the suction cup, and the other end is connected to the eccentric wheel. The motor drives the eccentric wheel to rotate, thereby driving the connecting rod to reciprocate linearly.

9. A wearable breast pump according to claim 1, characterized in that, The breast pump also includes a housing, which is formed by the housing and the protective flange to form a milk storage chamber. The milk storage chamber is connected to the second opening and is configured to collect the milk flowing in from the second opening.

10. A wearable breast pump according to claim 9, characterized in that, The negative pressure mechanism can be removed from the housing.

11. A wearable breast pump according to claim 1, characterized in that, The negative pressure mechanism can be removed from the protective flange.

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