JP2019005027A - Breast pump for mother's milk - Google Patents

Abstract

To provide a breast pump 10 for mother's milk, capable of efficiently milking by a negative pressure, and having a simple structure and a low manufacture cost.SOLUTION: A flexible plastic mother's milk storage part 12 is grasped and narrowed with the hand, and while narrowing the mother's milk storage part 12, a cup body 11 is adhered to the breast, and when loosening the hand grasping the mother's milk storage part 12, the narrowed mother's milk storage part 12 is restored to a barrel-like type by resilience of flexible plastic, and a volume of the mother's milk storage part 12 is expanded so as to generate a negative pressure in the mother's milk storage part 12. Mother's milk is sucked from the nipple by the negative pressure, and is stored in the mother's milk storage part 12 through the cup body. Due to that when opening by pressing a press button type check valve 13 after the mother's milk storage part 12 is restored, air flows from the outside to the mother's milk storage part 12 so that the negative pressure is decreased, and the cup body 11 adhering to the breast by the negative pressure can be released from the breast.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a breast pump.

As one type of breast milking machine, Japanese Patent Application Laid-Open No. 2004-73469 includes a cup made of a soft plastic that covers the teat portion and can be closely attached to the periphery thereof, and a cap attached to the lower end of the cup body. A breast milking device is disclosed in which a cap is screwed onto an opening of a baby bottle to connect the cup body and the baby bottle.
According to this breast milking machine, it is possible to squeeze the breast milk by manually holding the cup body that is in close contact with the breast so as to cover the teat and store it in the baby bottle.

Japanese Patent Application Laid-Open No. 2010-167052 discloses an outer cylinder in which both ends are formed in an opening and a cap is integrally provided at one end opening, an inner cylinder in which both ends are formed in an opening and one end opening is formed in a trumpet shape, A check valve is provided, and the inner cylinder is fitted airtightly and removably from the other end opening of the outer cylinder, and a cap is screwed onto the opening of the baby bottle to connect the outer cylinder to the baby bottle. A breast milking machine having a check valve sandwiched between caps is disclosed.
According to this breast pump, when the outer cylinder is moved backward with respect to the inner cylinder while the trumpet-shaped opening of the inner cylinder is in close contact with the breast so as to cover the nipple, the inner cylinder and the outer cylinder are partitioned. Since the volume of the space is increased and the check valve prevents the air from flowing out of the baby bottle to the outside, the inside of the inner cylinder becomes negative pressure. And breast milk is sucked from the teat by negative pressure. The sucked breast milk is collected at the bottom of the outer cylinder, and when the outer cylinder is advanced, it is stored in the baby bottle through the check valve.

JP 2004-73469 A JP 2010-167052 A

The breast milking machine that closes the soft plastic cup body to the breast and squeezes the breast milk with the cup body by hand has low milking efficiency of the breast milk, and it takes time to milk the required amount of milk.
In addition, a breast milking machine that milks breast milk with a negative pressure generated by expanding the volume of the space defined by the inner cylinder and the outer cylinder is higher in milking efficiency than a breast milking machine that holds the cup body by hand. However, there are many parts such as an inner cylinder, an outer cylinder with a cap, and a check valve. In addition to this, packing is required to fit the inner cylinder in a baby bottle or outer cylinder. The structure is complicated and the manufacturing cost is high.
In view of this point, an object of the present invention is to provide a breast pump that can efficiently pump milk with negative pressure, has a simple structure, and has low manufacturing costs.

The invention described in claim 1
A breast milking machine comprising a cup body that covers the nipple portion and can be brought into close contact with the surrounding breasts, and a breast milk reservoir that communicates with the cup body,
Allowing air to flow from the inside to the outside of the breast milk reservoir, preventing air from flowing from the outside to the inside, and opening when pressed to allow air to flow into the breast milk reservoir from the outside and releasing the pressure A close check valve is provided in the breast milk reservoir,
The cup body, the breast milk reservoir and the check valve are integrally formed of soft plastic.

The invention described in claim 2 is the breast pump according to claim 1,
It is characterized in that at least two thin strips extending vertically in the breast milk reservoir are formed at opposing positions.

Preferably, a ring-shaped ridge is integrally formed at an intermediate position of the outer peripheral portion of the breast milk storage portion.
Preferably, as the check valve, a push button whose inner hollow portion communicates with the breast milk storage portion is protruded from the breast milk storage portion, a slit is formed in the outer peripheral portion of the push button, and the slit is formed when the push button is pressed. It opens, and it is comprised so that air may flow into the breast milk storage part through the inside of a pushbutton from the opened slit.
Furthermore, a flange portion is preferably provided at the bottom of the breast milk storage portion.

According to the first aspect of the present invention, when the cup body is brought into close contact with the breast, and the breast milk reservoir 12 made of soft plastic is squeezed by hand, the air in the breast milk reservoir is compressed and exposed to the outside through the check valve. leak. When the hand holding the breast milk storage part is loosened, the breast milk storage part that has been constricted is restored by the elasticity of the soft plastic, and the volume of the breast milk storage part is expanded, so that negative pressure is generated in the sucking milk storage part. With this negative pressure, breast milk is sucked from the nipple and stored in the breast milk reservoir through the cup body.
By repeating such a series of operations, a required amount of breast milk can be stored in the breast milk reservoir.
When the check valve is pressed and opened after the breast milk reservoir is restored, air flows into the breast milk reservoir from the outside, so the negative pressure decreases and the cup body that was in close contact with the breast due to the negative pressure is removed from the breast. Can do.
Thus, according to the present invention, since the breast milk is sucked by the negative pressure generated in the breast milk storage section, the breast milk can be efficiently expressed.
Since the cup body, the breast milk reservoir and the check valve are integrally formed of soft plastic, the structure is extremely simple, can be manufactured at a low cost, and the cleaning operation is easy.

  According to the second aspect of the invention, since the thin strip extending vertically is formed on the outer peripheral portion of the breast milk storage portion, the strength of the thin strip portion in the breast milk storage portion is lower than that of other portions. Since the thin band with low strength is arranged oppositely, if the breast milk storage part is gripped by hand and the thicker part than the thin band is crushed from both sides, the thin band is bent and the breast milk storage part is narrowed. Thus, since the thin milk strip | belt with low intensity | strength was provided in the breast milk storage part, a breast milk storage part can be lightly crushed and it is convenient.

1 is a perspective view showing a breast milk pump according to a first embodiment of the present invention. It is a front view which shows the breast milk pump which concerns on 1st Example of this invention. It is a side view which shows the breast milk pump which concerns on 1st Example of this invention. It is sectional drawing cut | disconnected from the 4-4 line | wire of FIG. It is sectional drawing cut | disconnected from the 5-5 line | wire of FIG. FIG. 6 is a partial enlarged cross-sectional view taken along line 6-6 of FIG. It is sectional drawing cut | disconnected from the 7-7 line | wire of FIG. It is sectional drawing cut | disconnected from the 8-8 line | wire of FIG.

  The present invention will be described below. 1 to 5 show a breast pump 10 according to an embodiment of the present invention. The breast pump 10 includes a cup body 11 that covers the teat portion and can be brought into close contact with the surrounding breast, and a barrel-shaped breast milk storage unit 12 that communicates with the cup body 11. A push button type check valve is provided on the neck portion 12 a formed at the top of the breast milk storage portion 12. The cup body 11, the breast milk storage portion 12, and the push button check valve 13 are integrally formed of a soft plastic such as silicon rubber.

As shown in an enlarged view in FIGS. 6 and 7, the pushbutton check valve 13 is hollow and communicates with the breast milk reservoir 12. The outer peripheral portion of the pushbutton check valve 13 is formed with a thin-walled portion 13a in an arc shape, and a pair of left and right slits 13b is formed in the thin-walled portion 13a, so that air from the inside toward the outside is checked in one way It plays the role of a valve.
When the push button type check valve 13 is pressed with a finger, the slit 13b is opened, and air flows from the outside through the inside of the push button type check valve 13 into the breast milk storage unit 12. When the push-button check valve 13 is released, the slit 13b is closed and the inflow of air from the outside to the breast milk storage unit 12 is stopped.

A ring-shaped ridge 12 b is integrally formed at an intermediate position of the outer peripheral portion of the breast milk storage portion 12 in order to reinforce the breast milk storage portion 12. The breast milk reservoir is formed in a shape in which the portion of the ridge 12b has a maximum outer diameter and is narrowed in the vertical direction from the ridge 12b. As shown in FIGS. 4, 5 and 8, the breast milk reservoir 12 is formed with two thin bands 12c facing each other, and the thickness t2 of the other portion 12e of the breast milk reservoir is the thickness of the thin band 12c. It is formed larger than t1. The thin strip 12c extends vertically from the neck 12a to the bottom 12d of the breast milk storage section 12.
Further, the bottom portion 12d of the breast milk storage portion 12 is formed with a thick bottom, and an expanded flange portion 12f is provided.

The structure of the breast pump 10 according to the present embodiment is as described above.
When the cup body 11 is brought into close contact with the breast, and the breast milk reservoir 12 made of soft plastic is gripped and squeezed, the air in the breast milk reservoir 12 is compressed and flows out through the push-button check valve 13. When the hand holding the breast milk storage part 12 is loosened, the breast milk storage part 12 that has been constricted is restored to a barrel shape by the elasticity of soft plastic, and the volume of the breast milk storage part 12 is expanded. Negative pressure is generated. With this negative pressure, breast milk is sucked from the teat and is stored in the breast milk reservoir 12 through the cup body 11.
By repeating such a series of operations, a required amount of breast milk can be stored in the breast milk storage unit 12.
When the push-button check valve 13 is pressed and opened after the breast milk reservoir 12 is restored, air flows into the breast milk reservoir 12 from the outside, so the negative pressure is reduced and the cup that is in close contact with the breast by the negative pressure The body 11 can be removed from the breast.

According to the present embodiment, since the breast milk is sucked with the negative pressure generated in the breast milk storage unit 12, the breast milk can be efficiently expressed. Since the cup body 11, the breast milk storage portion 12, and the push button type check valve 13 are integrally formed of soft plastic, the structure becomes extremely simple, can be manufactured at low cost, and the cleaning operation is facilitated.

Since the ring-shaped ridge 12b is formed on the outer peripheral portion of the breast milk reservoir 12, the restoring force of the breast milk reservoir 12 is increased. Further, since the thin band 12c having a lower strength than other parts is formed in the breast milk storage part 12, when the breast milk storage part 12 is grasped by hand and the thick part 12e is crushed from both sides, the thin band 12c is formed. The breast milk storage part 12 is stenciled by bending. Since the thin band 12c having a low strength is provided, the breast milk storage unit 12 can be lightly crushed, which is easy to use.
Since the bottom part 12d of the breast milk storage part 12 is formed with a thick bottom and the flange part 12f is provided, when the breast milking machine 10 in which the breast milk is stored is placed on a table or the like, it can stand stably and is not easily collapsed. Handling becomes easy.

DESCRIPTION OF SYMBOLS 10 ... Breast milking machine 11 ... Cup body 12 ... Breast milk storage part 12b ... Ring-shaped convex strip 12c ... Thin-walled strip 12d ... Bottom part 12f ... Flange part 13 ... Pushbutton type check valve 13b ... Slit

Claims (5)

A breast milking machine comprising a cup body that covers the nipple portion and can be brought into close contact with the surrounding breasts, and a breast milk reservoir that communicates with the cup body,
Allowing air to flow from the inside to the outside of the breast milk reservoir, preventing air from flowing from the outside to the inside, and opening when pressed to allow air to flow into the breast milk reservoir from the outside and releasing the pressure A close check valve is provided in the breast milk reservoir,
A breast milking machine, wherein a cup body, a breast milk storage part and a check valve are integrally formed of soft plastic. 2. The breast pump according to claim 1, wherein two thin strips extending vertically in the breast milk reservoir are formed at opposing positions. 2. The breast pump according to claim 1, wherein a ring-shaped ridge is integrally formed at an intermediate position of the outer peripheral portion of the breast milk storage portion.   As the check valve, a push button whose inner hollow portion communicates with the breast milk storage portion is projected from the breast milk storage portion, a slit is formed on the outer periphery of the push button, and when the push button is pressed, the slit opens and the slit opens. 2. The breast pump according to claim 1, wherein air is introduced into the breast milk reservoir through the inside of the push button.   2. The breast pump according to claim 1, wherein a flange portion is provided at the bottom of the breast milk storage portion.

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