A breast shield and a breast pump without support

Abstract

The utility model relates to a hands-free breast shield and a breast pump, and belongs to the technical field of breast pumps. It includes a trumpet cover with a large end for attaching to the breast, a small end of the trumpet cover is connected to a pipe that can be inserted into the nipple, and the pipe is connected to a power device that can generate negative pressure inside the pipe; the inner side of the trumpet cover is provided with a recessed portion, and the recessed portion can form a closed cavity with the contacted breast surface, and the cavity is connected to a negative pressure generating device, and the cavity is completely isolated from the internal space of the pipe, and the negative pressure generating device is activated to generate negative pressure in the cavity to adsorb the breast shield on the breast. The utility model can change the effective volume in the cavity, so that the cavity generates negative pressure to adsorb the breast shield on the breast, thereby achieving the hands-free effect of the breast shield, reducing the pressure restraint on the breast, and improving the comfort of use.

Description

Technical Field

[0001] The utility model relates to the technical field of breast pumps, in particular to a hands-free breast shield and a breast pump. Background Art

[0002] A breast pump is a device for extracting milk from the breast of a user. After giving birth to a baby, a parturient cannot secrete milk in time and cannot breastfeed the baby, so a breast pump is needed to enable the parturient to produce milk in time. At present, the fundamental principle of breast pumps on the market is to suck out milk by negative pressure adsorption, so it is necessary to fit the breast cup of the breast pump on the breast to facilitate negative pressure milk suction. At present, there are many ways to fix the breast cup on the market to fit the breast, for example, by hand support or using auxiliary components such as straps and nursing bras to fix the breast cup, but the hand support fixing method will cause excessive fatigue of the parturient during a long period of milk suction; when using auxiliary components such as straps and nursing bras, it is necessary to give the auxiliary components sufficient binding force to support the breast cup to ensure the fitting effect, but it is easy to produce a large binding pressure on the breast, affecting the comfort of use.

[0003] After searching, it is found that a solution of a hands-free breast shield has been disclosed in the prior art, such as a hands-free breast pump system with a publication number of CN102065922A, which discloses a breast shield with a sticky inner surface for adhering to a woman's breast. The adapter is connected to the breast shield to transmit the vacuum generated by the pump to the breast. The adapter also allows the milk squeezed from the breast to be discharged from the adapter into a container. The breast shield adheres to the breast and supports the weight of the adapter and the collection bottle without the need for a separate adhesive, gel, strap or specially designed support bra. The sticky breast shield allows hands-free milking, wherein the inner surface of the shaping member is composed of a sticky material, the sticky material is configured to stick to the breast around the areola without preventing milk from being squeezed out of the breast, and the stickiness of the sticky material is sufficient to stick the shaping member to the skin for the duration required to squeeze out the desired amount of milk, and support the shaping member and the adapter without the need for an additional support structure.

[0004] The above structure achieves the adhesion effect through the sticky material, and the present application provides another design idea to achieve the hand-free effect of the breast shield and reduce the pressure and restraint on the breast. Utility Model Content

[0005] In order to solve the problem that the prior art breast shield needs to be supported, the utility model provides a breast shield and a breast pump that does not need to be supported. It adopts the following technical solutions:

[0006] A hands-free suction breast shield comprises a trumpet shield with a large end for adhering to a breast, a small end of the trumpet shield being connected to a pipe which can be inserted into a nipple, and the pipe being connected to a power device which can generate negative pressure inside the pipe; a recess is provided on the inner side of the trumpet shield, and the recess can form a closed cavity with the contacted surface of the breast, the cavity is connected to a negative pressure generating device, and the cavity is completely isolated from the internal space of the pipe, and negative pressure is generated in the cavity by activating the negative pressure generating device so as to adsorb the suction breast shield on the breast.

[0007] Furthermore, the negative pressure generating device includes a chamber, and a one-way valve connected to the chamber and capable of exhausting air to the outside. A first moving part is provided on the chamber, and the first moving part can move relatively to reduce the internal volume of the chamber. At the same time, the first moving part has at least a partial movement reset capability.

[0008] Furthermore, the first moving part includes an elastic body with elastic reset, and the elastic body constitutes a part or the whole of the effective volume of the chamber.

[0009] Furthermore, the negative pressure generating device includes a chamber, on which a second moving member is provided. The second moving member can move relatively to increase the internal volume of the chamber, and at the same time, the second moving member can remain fixed after the volume of the chamber is increased.

[0010] Furthermore, the second moving part includes a bellows-shaped airbag that can maintain a deformed state, and the bellows-shaped airbag constitutes a part or the entirety of the effective volume of the chamber.

[0011] Furthermore, a cylinder sleeve is provided on the wall where the chamber is located; the first and second moving parts include a piston that can be displaced relative to the cylinder sleeve, and a control part for locking the stroke position of the piston.

[0012] Furthermore, the control member comprises a movable part connected to the first and second movable members, and the movable part and the fixed part on the breast shield form a detachable locking fit through a locking structure.

[0013] Furthermore, the locking structure is a locking hole and a positioning column respectively arranged on the movable part and the fixed part;

[0014] Alternatively, buckle structures are provided on the movable part and the fixed part respectively;

[0015] Alternatively, an elastic pin and a hole structure are respectively arranged on the movable part and the fixed part;

[0016] Alternatively, the magnetic coupling structures are respectively arranged on the movable part and the fixed part.

[0017] Furthermore, the negative pressure generating device is a partial component of the power device.

[0018] A breast pump comprises the above-mentioned hands-free breast shield.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides a recessed portion on the inner side of the horn cover, and the recessed portion can form a closed cavity with the contacted breast surface, the cavity is connected with the negative pressure generating device, and the cavity is completely isolated from the inner space of the pipeline. By starting the negative pressure generating device, the stroke change of the first and second moving parts is utilized to change the effective volume in the cavity, so that the cavity generates negative pressure to adsorb the breast shield on the breast, thereby achieving the hand-free effect of the breast shield, reducing the pressure restraint on the breast, and improving the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a hands-free breast shield according to the first embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the speaker cover in the embodiment of the utility model in the forward direction;

[0023] Figure 3 This is a schematic diagram of the structure of a hands-free breast shield according to Embodiment 2 of the present utility model;

[0024] Figure 4 It is a schematic diagram of the rigid piston structure of the hands-free breast shield of the third embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the flexible piston structure of the hands-free breast shield according to the third embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the first locking structure in the embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the second locking structure in the embodiment of the utility model;

[0028] Figure 8 It is a schematic diagram of the third locking structure in the embodiment of the utility model;

[0029] Fig. 9 It is a schematic diagram of the structure of a hands-free breast shield according to a fourth embodiment of the present utility model;

[0030] Fig.10 It is a schematic structural diagram of a split-type breast pump according to an embodiment of the utility model;

[0031] Fig.11 It is a schematic structural diagram of a wearable breast pump according to an embodiment of the utility model.

[0032] Explanation of the reference numerals: 1. horn cover; 11. recess; 12. cavity; 13. narrow channel; 2. pipeline; 3. power device; 4. negative pressure generating device; 41. chamber; 42. one-way valve; 43. first moving part; 44. second moving part; 45. bellows-shaped airbag; 46. cylinder sleeve; 47. piston; 5. control part; 51. movable part; 52. fixed part; 6. locking structure; 61. locking hole; 62. positioning column; 63. clamping head; 64. clamping groove; 65. elastic pin; 66. limiting hole; 101. shell; 102. milk collecting container. DETAILED DESCRIPTION

[0033] To make the present invention more clearly understood, a hands-free breast shield and a breast pump of the present invention are further described below in conjunction with the accompanying drawings. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Embodiment 1

[0034] like Figure 1 , Figure 2 As shown, a hands-free breast shield includes a horn cover 1 whose large end is used to adhere to the breast, and a small end of the horn cover 1 is connected to a pipe 2 that can be inserted into the nipple. The horn cover 1 and the pipe 2 can be integrally plastic molded. A power device 3 that can generate negative pressure inside the pipe is provided on the upper side of the pipe 2. The power device 3 can be a manual air pump, or a vacuum generator with an electric air pump or a piston pump as a negative pressure source. The vacuum generator has a frequency of negative pressure change, and stimulates lactation by acting on the nipple through negative pressure. Of course, anti-backflow measures can also be set on the pipe 2 to prevent milk from entering the power device 3. Since the above-mentioned power device 3 and anti-backflow structure are both conventional structures of existing breast pumps, they are not described in detail in this embodiment.

[0035] A recess 11 is provided on the inner surface of the horn cover 1. The shape of the recess 11 is not specifically limited, and it is based on the fact that it can form a closed cavity 12 with the contacted breast surface. The position of the recess 11 is preferably set on the side away from the nipple. If there are multiple recesses 11, they can be evenly distributed along the side surface of the breast, and each recess 11 is connected to each other through a narrow passage 13. The formed cavity 12 is connected to the negative pressure generating device 4, and the cavity 12 is completely isolated from the internal space of the pipeline 2 to prevent the breast pump from affecting the pressure in the cavity 12 during the milking process. By starting the negative pressure generating device 4, the cavity 12 generates negative pressure, so that the breast shield is adsorbed on the breast.

[0036] Specifically, the negative pressure generating device 4 includes a chamber 41, a one-way valve 42 connected to the chamber 41 and capable of exhausting gas to the outside, and a first moving part 43 is provided on the chamber 41. The first moving part 43 can move relatively to reduce the internal volume of the chamber 41, and at the same time, the first moving part 43 has at least a partial movement reset capability. In this embodiment, the first moving part 43 is an elastic part made of silicone, which serves as the entire wall of the chamber 41. By pressing the first moving part 43 inward, the gas in the chamber 41 is discharged from the one-way valve 42. When the force applied to the first moving part 43 is withdrawn, the first moving part 43 returns to its original state under its own elastic action, and the volume of the chamber 41 returns to its original size. After the internal gas is reduced, negative pressure is generated, and the negative pressure acts on the side of the breast through the cavity 12, forming negative pressure adsorption to achieve the effect of free support fixation. In this example, the one-way valve 42 can be a duckbill valve, which is integrally formed with the first moving part 43. Embodiment 2

[0037] like Figure 3 As shown, the difference between this embodiment and the first embodiment is the structure of the negative pressure generating device 4, and its specific structure is as follows: the negative pressure generating device 4 includes a chamber 41, and a second moving member 44 is provided on the chamber 41. The second moving member 44 can move relatively to increase the internal volume of the chamber 41. At the same time, the second moving member 44 can maintain the ability to maintain the relative position of the chamber 41 after the volume is increased. In this embodiment, the second moving member 44 includes a bellows-shaped airbag 45 that can maintain a deformed state. The bellows-shaped airbag 45 can be stretched in its length direction, and when it is in a stretched state, it can maintain this state. Preferably, the bellows-shaped airbag is made of plastic material, which has good stability in a stretched state. The chamber 41 is composed of an orifice arranged on the outside of the horn cover 1 and connected to the recess 11, and the bellows-shaped airbag. The bellows-shaped airbag 45 is the effective volume of a part of the chamber 41. In the initial state, the bellows-shaped airbag 45 is in a pressed state. When the breast shield needs to be fitted on the breast, the inner volume of the chamber 41 can be increased by stretching the bellows-shaped airbag 45 so as to achieve negative pressure adsorption and fixation of the breast shield. Embodiment 3

[0038] This embodiment only describes the differences from the first embodiment. Figure 4As shown, the horn cover 1 is provided with a cylinder sleeve 46, which is connected to the recess 11, and a piston 47 that can be relatively displaced is provided in the cylinder sleeve 46, and the space enclosed by the end of the piston 47 and the cylinder sleeve 46 is the chamber 41. The piston 47 is used as the first moving part to lock its stroke position through the control part 5. Specifically, the control part 5 includes a movable part 51 connected to the piston 47, and the movable part 51 can be a flexible part or a rigid part that matches the moving path of the piston 47. The movable part 51 and the fixed part 52 on the breast shield form a detachable locking fit through the locking structure 6. Here, the fixed part 52 can be the horn cover 1 or an external entity fixedly connected to the horn cover. When the piston 47 moves inward, the gas in the chamber 41 is compressed, and the gas is discharged through the one-way valve 42, and then the piston 47 is pulled back to an appropriate position and maintained in a fixed state through the locking structure 6, thereby increasing the internal volume of the chamber 41 and realizing the negative pressure adsorption fixation of the breast shield. In this embodiment, the piston 47 may be a rigid piston head, and the circumference of the piston head is in sliding sealing contact with the inner wall of the cylinder sleeve 46 through a sealing ring; the piston 47 may also be a flexible diaphragm structure, such as Figure 5 As shown, the edge of the diaphragm is fixedly connected to the sleeve opening of the cylinder sleeve 46. When the diaphragm moves and deforms relative to the cylinder sleeve 46, the volume of the space enclosed by them can be changed.

[0039] In addition, in this embodiment, the locking structure 6 can adopt a variety of structural forms, and this structure is given as a limited example. Figure 6 As shown: the locking structure 6 is a locking hole 61 arranged on the movable part 51, and a positioning column 62 on the fixed part 52, the locking hole 61 is sleeved on the positioning column 62 to form a fixation, wherein the locking hole 61 can be multiple to adjust the fixed position of the piston 47 under different strokes.

[0040] The locking structure 6 may also be a snap-fit ​​structure; Figure 7 As shown, the snap structure of the head 63 and the slot 64 are provided on the movable portion 51 and the fixed portion 52.

[0041] Figure 8 As shown, the locking structure 6 can also be respectively provided on the elastic pin 65 and the limiting hole 66 structure of the fixed part 52 and the movable part 51;

[0042] In addition, the locking structure 6 may also be a magnetic coupling structure respectively arranged on the movable part and the fixed part, such as ferromagnetic bodies that attract each other.

[0043] Of course, the matching pieces of the locking structures on the movable portion 51 and the fixed portion 52 are relatively interchangeable. Embodiment 4

[0044] This embodiment only describes the differences from the second embodiment. Fig. 9As shown, the horn cover 1 is provided with a cylinder sleeve 46 connected to the recess 11, and a piston 47 that can be relatively displaced is provided in the cylinder sleeve 46. Compared with the third embodiment, the piston 47 is directly moved outward to increase the internal volume of the chamber 41 so as to achieve negative pressure adsorption and fixation of the breast shield. Of course, the piston 47 is also kept in a fixed state in the appropriate position by the locking structure 6 to ensure the stability of negative pressure adsorption. Compared with the third embodiment, the one-way valve 42 is cancelled, and the operation method is also changed. Embodiment 5

[0045] The negative pressure generating device 4 may also be a partial component of the power device 3 , and the power device 3 has a branched negative pressure interface directly connected to the recess 11 .

[0046] The utility model also provides a breast pump, which uses the above-mentioned breast shield as its component. The breast pump can be as follows Figure 1 The integrated breast pump shown can also be Fig.10 The split breast pump shown in the figure can also be Fig.11 The wearable breast pump shown in the figure comprises a breast shield and a power device 3 of the breast pump integrated in a hemispherical shell 101, and a milk collecting container 102 located in the shell 101; the first and second moving parts in the negative pressure generating device 4 should have a space for hand-held pressing or stretching, and their moving paths will not interfere with the shell 101, for example, this can be achieved by opening avoidance slots, holes and other measures on the shell 101.

[0047] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form; any technician familiar with the field can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the utility model without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A breast shield for hands-free suction, comprising a horn cover (1) with a large end for attaching to a breast, a small end of the horn cover (1) being connected to a pipe (2) for inserting a nipple, and a power device (3) for generating negative pressure inside the pipe being connected to the pipe (2); characterized in that: The inner side of the horn cover (1) is provided with a recess (11), and the recess (11) can form a closed cavity (12) with the surface of the breast in contact therewith, the cavity (12) being in communication with the negative pressure generating device (4), and the cavity (12) being completely isolated from the internal space of the pipe (2), and by activating the negative pressure generating device (4) to generate negative pressure in the cavity (12), the breast shield is adsorbed onto the breast.

2. A hands-free breast shield according to claim 1, characterized in that: The negative pressure generating device (4) comprises a chamber (41) and a one-way valve (42) which is in communication with the chamber (41) and can exhaust gas to the outside. A first moving member (43) is provided on the chamber (41). The first moving member (43) can move relatively to reduce the internal volume of the chamber (41). At the same time, the first moving member (43) has at least a partial movement reset capability. Alternatively, the negative pressure generating device (4) comprises a chamber (41), on which a second moving member (44) is provided. The second moving member (44) can move relatively to increase the internal volume of the chamber (41), and the second moving member (44) can remain fixed after the volume of the chamber (41) is increased.

3. A hands-free breast shield according to claim 2, characterized in that: The first moving member (43) comprises an elastic body with elastic reset, and the elastic body constitutes a part or the whole of the effective volume of the chamber (41).

4. A hands-free breast shield according to claim 2, characterized in that: The second moving member (44) comprises a bellows-shaped airbag (45) capable of maintaining a deformed state, and the bellows-shaped airbag (45) constitutes a part or the entirety of the effective volume of the chamber (41).

5. The hands-free breast shield according to claim 2, characterized in that: A cylinder sleeve (46) is provided on the wall of the chamber (41); the first and second moving parts include a piston (47) that can move relative to the cylinder sleeve (46), and a control part (5) for locking the stroke position of the piston (47).

6. A hands-free breast shield according to claim 5, characterized in that: The control member (5) comprises a movable part (51) connected to the first and second movable members, and the movable part (51) and the fixed part (52) on the breast shield form a detachable locking fit via a locking structure (6).

7. A hands-free breast shield according to claim 6, characterized in that: The locking structure (6) is a locking hole (61) and a positioning column (62) respectively arranged on the movable part (51) and the fixed part (52); Alternatively, buckle structures are respectively arranged on the movable portion (51) and the fixed portion (52); Alternatively, elastic pin and hole structures are respectively arranged on the movable part (51) and the fixed part (52); Alternatively, the magnetic coupling structures are respectively arranged on the movable part (51) and the fixed part (52).

8. The hands-free breast shield according to claim 1, characterized in that: The negative pressure generating device (4) is a partial component of the power device (3).

9. A breast pump, characterized in that: A hands-free breast shield comprising any one of claims 1-8.

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