JP2007089904A - Breast pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a breast pump capable of changing over between a communication state between a milk extraction side and a bottle side in forming a negative pressure and a closed state by an opening/closing means formed of a simple and easy handling structure. <P>SOLUTION: This breast pump is provided with: a breast pump body 21 including a milk extraction part 22 extracting breast milk by a negative pressure, and a negative pressure suction means 25 for generating the negative pressure; a storage means 47 detachably attached to the breast pump body and capable of storing the extracted breast milk; and a hollow tube body 31 disposed between the breast pump body and the storage means, used for the opening/closing means for temporarily stopping or passing the movement of the breast milk extracted by the breast pump body to the storage means, and having elasticity. The breast pump part inside is made a negative pressure state by the negative pressure suction means, the tube body 31 is deformed corresponding thereto, and its inner walls are made to approach and abut on each other, while the breast pump inside is made a negative pressure released state by the negative pressure suction means, the tube body is restored corresponding thereto and their inner walls are separated from each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

   The present invention relates to an improvement of a breast pump for milking breast milk.

  Conventionally used breast pumps are, for example, a trumpet 22 for contacting the breast and a negative pressure such as a pump for creating a negative pressure in the space formed by contacting the breast to the trumpet. Forming means are provided. The breast milk sucked into the negative pressure space is stored by being dropped into a bottle 41 or the like (see Patent Document 1, FIG. 19).

In such a milking machine, in order to prevent the negative pressure formed on the baby bottle side from escaping to the bottle side and lowering the milking efficiency, the milking part side and the bottle side are in communication with each other at the time of milking. The valve body is shaped like a temporary stop. A small chamber valve 26 is provided for storing the milk obtained by milking in a small chamber with a valve body to some extent, then opening the small valve body with the weight of breast milk accumulated in the small chamber and dropping it into the bottle 44. .
Similarly, a small chamber valve having a structure that functions as a valve body by providing an opening on a side surface of the molded body as a small chamber valve and opening and closing the opening with a seat body has been proposed (see Patent Document 2).
Moreover, in an electric breast pump, the structure which opens the said valve periodically and drops | releases breast milk is also known (refer patent document 3).

JP 2004-147781 US Pat. No. 4,929,229 JP-A-9-66099

  By the way, such a small chamber valve is a relatively elaborate part that can be attached to a small chamber in a small room, and the valve body is also easily damaged because it is made of extremely thin flexible silicone rubber or elastomer. In addition to being hindered, it is relatively unwieldy in cleaning and is inconvenient in terms of cleaning.

  Therefore, the present invention provides a breast pump that can be realized by an opening / closing means having a simple and easy-to-handle structure with respect to the communication state between the milking unit and the bottle side during the formation of negative pressure and the switching function between the closed state. It is aimed.

  In the invention of claim 1, the above-described object is a milking machine including a milking unit that abuts on the breast of a user and milks breast milk by negative pressure, and negative pressure suction means for generating the negative pressure. The main body, the storage means that can be attached to and detached from the breast pump main body, and can store the milk that has been milked, and the breast milk that is placed between the breast pump main body and the storage means and milked by the breast pump main body. A hollow tube body having elasticity used as an opening / closing means for temporarily stopping or passing the storage means, and the inside of the milking part is brought into a negative pressure state by the negative pressure suction means. In response to the deformation of the tube body, the inner walls thereof are brought into close contact with each other, and the tube body is restored in response to the negative pressure suction means being brought into a negative pressure release state. For milking machine with inner walls separated from each other Ri, is achieved.

According to the configuration of the first aspect of the invention, since the hollow tube body is used as the opening / closing means for temporarily stopping or passing the movement of the milk milked by the breast pump body to the storage means, the conventional small chamber Compared with a valve or the like, the mechanical strength can be improved with a relatively simple configuration, and handling is easy even during cleaning.
Thus, according to the present invention, it is possible to provide a breast pump realized by an opening / closing means having a simple and easy-to-handle structure with respect to a switching function between the milking part and the bottle side and a closed state when forming negative pressure. .

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, deformation promotion for imparting or accelerating deformation in which the negative pressure suction means approaches or separates the inner walls of the tube body as the opening / closing means. Means are provided.
According to the configuration of the second aspect of the invention, the tube body is used to assist (promote) the deformation of the breast milk pumped by the breast pump body to the storage means, or the deformation itself. By providing the means for performing the opening and closing operation, the tube body can be smoothly opened and closed.

According to a third aspect of the invention, in the configuration of the first or second aspect of the invention, the negative pressure suction unit includes a negative pressure generation unit and a manual lever for causing the negative pressure generation unit to perform a negative pressure generation operation. It is characterized by having.
According to the configuration of the third invention, a lever that is manually operated by being grasped by a user's hand, and a negative pressure generation that generates a negative pressure in the milking unit by being deformed or displaced in response to the movement of the lever The negative pressure required for milking can be obtained by the means.

  According to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, the milking portion includes a shape holding portion having rigidity for holding a shape whose diameter is substantially enlarged at the distal end side, and the shape holding portion. And a relatively soft contact portion that is attached to and detached from the shape holding portion and is in contact with the breast of the user, and the corresponding contact portion is the diaphragm-shaped negative pressure generating portion. The negative pressure generating portion is formed integrally or separately with one end of the tube, and the other end of the negative pressure generating portion is integrally or separately connected with the tube body as the opening / closing means.

  According to the configuration of the fourth invention, the shape holding portion maintains a substantially trumpet or conical shape for receiving and contacting a part of a user's breast, for example, the contact portion on the inside thereof Is placed. The contact portion is not only suitably applied to the user's breast due to a soft feel, but is also integrally or separately connected to the diaphragm-shaped negative pressure generating portion, so that the deformation of the negative pressure generating portion is performed. Alternatively, due to the displacement, a negative pressure can be applied at a position close to the breast of the user, and loss is small. In addition, since the movement of the negative pressure generating means is transmitted to the contact portion, the breast of the user can be stimulated and the secretion of breast milk can be further promoted.

According to a fifth aspect of the present invention, in the configuration of the fourth aspect of the invention, the tube body as the opening / closing means is configured to deform when the tube body is displaced and bent along with the deformation movement of the diaphragm. Features.
According to the configuration of the fifth aspect of the invention, the tube body connected as a separate body or integrally connected to the diaphragm is displaced or bent in accordance with the movement of the diaphragm, which is the negative pressure generating section, generating a negative pressure. Therefore, the movement of the negative pressure and the opening and closing of the breast milk passage are very efficiently linked.

  As described above, according to the present invention, the milking that can be realized by the opening and closing means having a simple and easy-to-handle structure with regard to the communication function between the milking unit and the bottle side during the negative pressure formation and the switching function between the closed state. Can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
The embodiment described below is a preferred specific example of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.

1 and 2 show the configuration of the breast pump according to the first embodiment of the present invention. FIG. 1 is a schematic sectional view of the breast pump, and FIG. 2 is a partial plan view of FIG.
FIG. 1 shows a main part of the structure of the milking machine 20, in which the milking machine 20 is a container as a storage means for milked breast milk, and can be attached to and detached from a bottle 47 that can also be used as a baby bottle. A container body 21 is provided.

The breast pump main body 21 includes a frame 42 that protects and supports a conical or trumpet-shaped milking portion 22 that opens outward in an obliquely inclined state and a part of its components.
The frame 42 is formed of a relatively light and strong synthetic resin material, and is formed of, for example, polycarbonate, polycycloolefin, polyphenylsulfone, polyethersulfone, polyamide, polypropylene, or the like.

  The frame 42 of the breast pump main body 21 is provided with an attaching / detaching portion 46 that attaches and detaches with a bottle 47 for storing milked milk. For example, as shown in FIG. 2, the detachable portion 46 is a flat cylindrical portion, and has a female screw portion 46 a on the inside, and is a male screw formed around the bottle mouth of the bottle 47. It is designed to be screwed with the part. The bottle 47 may be directly mounted with a pouch-shaped bag body, or may be configured so that the bag body and the case body are mounted indirectly via a housing having a male screw portion. . Further, the frame 42 and the bottle 47 may not be directly attached / detached, but may be configured to be attached via an adjustment part having a diameter adjustment and grip function when the diameters are different.

  In FIG. 1, a conical or trumpet milking portion 22 that opens outward in an obliquely inclined state is provided on the upper portion of the breast pump main body 21. The milking part 22 is integrally provided at the front end side of the slightly expanded open passage that constitutes the air passage 44, and the milking part 22 side of the frame 42 includes a shape holding part 23 that is greatly expanded in a trumpet shape. . The shape holding portion 23 is formed integrally with the frame 42 described with reference to FIG. 1. In this case, the shape holding portion 23 can be formed of the above-described synthetic resin, has a relatively high rigidity, and is not easily deformed. Note that the frame 42 and the shape holding portion 23 may not be formed integrally, but may be configured to be detachable as separate bodies.

Further, a trumpet-shaped contact portion 24 having substantially the same shape as the shape holding portion 23 is provided inside the shape holding portion 23. For example, the contact portion 24 is detachably attached so that the entire outer periphery, which is the tip of the shape holding portion 23, turns from the inside to the outside as shown in the drawing.
That is, the abutment portion 24 and the shape holding portion 23 are provided with, for example, means for locking each other (for example, a locking convex portion and a locking concave portion, or a size that can be press-fitted, etc.). 23 is attached to and detached from the inside. The abutting portion 24 is formed of a relatively flexible elastic body such as silicone rubber, elastomer, natural rubber or the like so that it can abut on the surface of the breast B indicated by a chain line without giving unpleasant stimulation.

The abutment portion 24 is a flexible trumpet-shaped cylinder, but since it is attached to the shape holding portion 23 and is in contact with the shape holding portion 23, no deformation occurs when the breast B is inserted. In addition, it is adapted to fit the breast B including the areola and nipple.
On the other hand, the negative pressure generating unit 28, which is a negative pressure suction means extending in the direction toward the bottle 47, which is arranged integrally with the corresponding contact portion 24 in FIG. 1, is cylindrical with the same material as the contact portion 24. It extends. The negative pressure generating portion 28 is not in contact with the shape holding portion 23, and is preferably a portion that is easily deformed by being made thinner than the contact portion 24.
That is, the negative pressure generating unit 28 is deformed into a state of a solid line and a state of a dotted line in FIG. That is, in the state of the solid line that is the start of use, the deformed wall 28b is positioned so as to be folded back toward the inside of the cylindrical outer peripheral wall 28a, and the state of the dotted line that deforms the negative pressure generating unit 28 Then, the negative pressure can be generated by moving the deforming wall 28b away from the milking unit 22, and then the negative pressure is released by restoring the deformed wall 28b from the deformed state by loosening the operation. Return to the start of use of the solid line.
In addition, the contact part 24 and the negative pressure generation part 28 may not be integrally formed, but may be configured to be separated from each other at their boundary positions and detachably attachable.

The milking part 22 side of the deformed wall 28b, which is an intermediate part of the negative pressure generating part 28, hits the surface of the user's breast B as shown by the solid line, so that the negative pressure increases and the use is started. When returning, the pressing portion 27 is pressed against the breast, gives a preferable stimulus accompanying milking around the vicinity of the areola, and can exert a massage effect.
In addition, one end of the negative pressure generating unit 28, that is, the vicinity of the upper end in FIG. 2 is integral with the contact portion 24, but the lower end side, which is the other end portion, retains the shape that is an end portion of an arm portion 33 described later. A support portion 26 that accommodates and supports the portion 33a in a detachable manner is formed.
The support portion 26 forms a negative pressure space 44 that is a passage for milk that has been milked inside.

A hollow tube body 31 as an opening / closing means extends from the support portion 26 downward in FIG. The lower end of the tube body 31 is attached to a hollow cylindrical attachment portion 46 b that stands up from the attachment / detachment portion 46 of the frame 42 that is the lid of the bottle 47.
The tube body 31 connects the space 44 connected to the milking unit 22 and the inside of the bottle 47 by a hollow space 45 of the tube body 31 itself, and the negative pressure generating unit 28 is negatively charged in the (inside) space 44. In the case of generating pressure, the negative pressure space 44 and the passage 45 communicating with the bottle 47 have a function of closing the passage 45 in the middle of the passage 45, and a means for opening and closing the passage between the space 44 and the bottle 47 It has become.
In addition, the mounting part 46b couple | bonded with the tube body 31 is made into the inclination end surface with the high milking part 22 side, and is made into one of the deformation | transformation promotion means which accelerates | stimulates the bending | flexion of the channel | path 45 mentioned later.

As long as it fulfills such a function, the tube body 31 may be integral with or separate from the diaphragm 28 and the support portion 26, and is integrally formed in the present embodiment.
As will be described later, the tube body 31 is made of a flexible material that is flexible so as to be easily bent in accordance with the negative pressure forming operation and has strength that does not break even if it is repeatedly bent. Moreover, about the location shown by the code | symbol 32 of the tube body 31, you may form the location which is easy to bend | fold or bend | fold by thinning the material thickness or providing a convex part in an inner surface. Further, the tube body 31 is not limited to a cylindrical shape, and may be an elliptical cylindrical shape or a long cylindrical shape.

The breast pump 20 is a negative pressure suction means for driving the negative pressure generating means 28 together with the negative pressure suction means 25 by manually operating a manual lever (hereinafter referred to as “lever”) 35 shown in FIG. It is considered a part.
A configuration example of this driving means will be described.
As shown in FIG. 1, the lever 35 has an upper end in a gripping area 35 a that is pivotable and detachably fixed to a support shaft portion 48 that stands up from an attachment / detachment portion 46 of the frame 42. A part of the lever 35 is a short rod or plate-like link 34 extending upward from the periphery of the support shaft portion 48. The distal end of the link 34 is rotatable around a support shaft at the lower end of the arm portion 33 connected to the negative pressure generating portion 28 and is detachably fixed.

  That is, as shown in FIGS. 1 and 2, the arm portion 33 is formed of a rigid material, and the shape holding portion 33 a on the milking portion 22 side of the arm portion 33 has a cup shape with an expanded diameter. ing. The shape holding part 33a can be mounted in the support part 26 by inserting the arm part 33 through the support part opening 26a from the milking part 22 side. Thereby, it has the function which prevents the deformation | transformation of the support part 26 accompanying a negative pressure. In addition, the arm part 33 may be integrated with the support part 26 etc. by integral molding, such as insert molding. From this position, the arm portion 33 extends obliquely downward, and is engaged with the above-described link 34 so as to be rotatable around the lower end thereof as shown in an enlarged view in FIG.

This embodiment is configured as described above. Next, the operation of the breast pump 20 will be described.
As shown in FIG. 1, when the lower end side of the lever 35 is manually moved closer to the bottle 47 and rotated around the support shaft 48 as indicated by the arrow A1, the link 34 is indicated by the arrow A2. It rotates around the support shaft 48.
As a result, the arm portion 33 moves as indicated by the arrow A3, so that the diaphragm 28 as the negative pressure generating portion is stretched by being pulled by the shape holding portion 33a mounted in the support portion 26. It is deformed and becomes a shape as indicated by a dotted line. As a result, the abutment portion 24 side is closed by the breast B, so that the negative pressure space 44 becomes a negative pressure space and milk is extracted from the breast B, and the milked milk enters the negative pressure space 44.

In synchronism with the above movement, the location of the support portion 26 of the negative pressure suction means 25 is displaced downward in FIG. 2, so that the tube body 31 is pressed by the support portion 26 in the direction of being contracted from the extended state.
That is, since the distance from the support portion 26 to the attachment / detachment portion 46 does not change, the tube body 31 is pushed toward the attachment portion 46b side of the attachment / detachment portion 46, so that the remaining length is left, and the bent portion indicated by reference numeral 32 Bend at the position as shown by the chain line. At this time, since the mounting portion 46b is an inclined surface, the milking portion 22 side that is the top portion thereof becomes the bending base point, and the bending portion 32 is surely bent.
By this bending, the inner surfaces of the tube bodies 31 approach each other and come into contact with each other, and the hollow space is closed. Thereby, the negative pressure in the negative pressure space 44 does not leak to the bottle 47 side, is appropriately milked, and accumulates above the bent portion 32 of the tube body 31.

Next, when the user relaxes the force, the restoring force of the deformation wall 28b works, the lever 35 moves in the opposite direction to the arrow A1 in FIG. 1, the link 34 also moves in the opposite direction to the arrow A2, and returns to the position of the solid line. Since the arm portion 33 moves upward as opposed to the arrow A3, the diaphragm 28 returns to the solid line state.
As a result, the space denoted by reference numeral 44 returns to the original atmospheric pressure state (negative pressure release), and at the same time, the bent portion 32 of the tube body 31 extends to return to the state shown by the solid line, and the closure of the hollow passage is released. Therefore, the passage between the space 44 and the bottle 47 is opened, and the milk accumulated in the space 44 is dropped into the bottle 47 by milking.
That is, the user grips the lever 35 in the direction of the arrow A1 and repeatedly operates it by releasing the force, whereby the negative pressure in the space 44 by the diaphragm 28 and the release thereof are alternately performed. A necessary amount of breast milk can be stored in 47.

  In this case, since the hollow tube body 31 is used as an opening / closing means for temporarily stopping or allowing the milk milk to move to the bottle 47, the structure is relatively simple compared to a conventional small chamber valve or the like. The mechanical strength can also be improved, and the tube body 31 can be easily attached and detached together with the contact portion 24, the support portion 26, and the negative pressure generating portion 28 at the time of cleaning, etc., so that handling is easy. Moreover, since there are few points | pieces which comprise the breast pump 20, handling is easy for a user and manufacturing cost can be reduced.

Next, a second embodiment will be described.
3 to 5 are schematic cross-sectional views showing the main part of a second embodiment of the breast pump.
In FIGS. 3 to 5, the portions denoted by the same reference numerals as those in FIGS. 1 and 2 for explaining the first embodiment have a common configuration, and therefore, a duplicate description is omitted.

In the negative pressure suction means 25-1 of the milking part 22 in the milking machine 20-1, the configuration of the support part 26-1 following the diaphragm 28, which is a negative pressure generating means, is slightly compared with the first embodiment. Different. Specifically, the support portion 26-1 is slightly longer as shown in the figure, and the arm portion 33 and the shape holding portion 33a are not formed. Further, a pocket-shaped or slit-shaped accommodating portion 51 is formed at the end portion of the support portion 26-1, and a long link 34-1 having a plate shape extending above the lever 35 is formed from the opening. Has been inserted.
As the support portion 26-1 is lengthened, the reinforcing ribs 55, 55, 55 for holding the shape of the support portion 26-1 at the time of negative pressure instead of the shape holding portion 33a are made cylindrical here. Four portions are formed so as to protrude from the outer periphery of the support portion 26-1. Instead of forming the reinforcing rib 55, the thickness of the support portion 26-1 may be changed, or the material may be molded integrally with the negative pressure generating portion 28.

Furthermore, a short boss-like portion 53 is formed as a part of deformation promoting means that extends from the support shaft 48-1 toward the tube body 31 integrally with the lever 35-1. The position of the boss 53 is provided at a position corresponding to the bent portion 32 of the tube body 31, and further from the inner wall of the frame 42 to a position corresponding to the bent portion 32 as another part of the deformation promoting means. The convex portion 54 is provided so as to protrude. The support shaft 48-1 is configured to form a notch in the wall surface of the frame 42, and to engage the notch with the shaft protruding outward from the lever 35-1.
The tube body 31 is formed separately from the support portion 26-1, and the lower end side is fixed by the seat plate portion 31 a being sandwiched between the bottle 47 and the detachable portion 46 and communicates with the bottle 47. The upper end side is configured to communicate with the space 44 by inserting a detachable convex portion 26-1a protruding outward from the lower end of the support portion 26-1.

This embodiment is configured as described above, and when the lever 35-1 is moved in the direction of arrow B1 from the state of FIG. 4, the end portion of the support portion 26-1 is moved in the direction of B2 by the link 34-1. To do. Thereby, as shown in FIG. 5, the deformation wall 28 b of the diaphragm 28 is deformed toward the bottle 47 side, and a negative pressure is formed in the space 44.
At the same time, as shown in FIG. 5, the boss-like portion 53 hits the outer surface on the lever 35-1 side of the tube body 31, and on the opposite surface, the convex portion 54 hits the outer surface of the tube body 31 and presses so as to be sandwiched. It is promoted that the tube body 31 bends and seals more reliably than in the case of the first embodiment.
Due to this rapid bending, the inner surfaces of the tube bodies 31 approach each other and come into contact with each other, and the hollow space is closed. That is, the negative pressure in the negative pressure space 44 is divided from the bottle 47 side by the bending of the tube body 31 more surely and quickly than in the first embodiment, and it is properly milked without leaking reliably. The tube body 31 accumulates above the bent portion 32.
Other operations are the same as those in the first embodiment.

FIG. 6 is a schematic sectional view showing a third embodiment of the breast pump.
In FIG. 6, since the location which attached | subjected the code | symbol same as the code | symbol of FIG.1 and FIG.2 explaining 1st Embodiment is a common structure, the overlapping description is abbreviate | omitted.
The milking machine main body 21-2 of the milking machine 20-2 is greatly different from the first embodiment in the configuration of the milking unit 22-2.

That is, a diaphragm 28-2 having a concave central portion is formed vertically above the space 44, and a boss 57 is fixed to the central portion. The tip 35a of the lever 35-2 is connected to the boss 57. A bulging portion 58 for preventing the boss 57 is formed at the upper end of the boss 57, thereby preventing the tip of the lever 35-2 from detaching during operation.
In addition, a distance L1 is provided between the tip 35a and the stopper 58 so that the deformation of the diaphragm 28-2 does not start immediately even when the tip 35a of the lever 35-2 starts to rise.
The tip 35a of the lever 35-2 moves upward, and when the distance L1 is passed, the tip of the lever 35-2 engages with the bulging portion 58 and the boss 57 rises, so that the central portion of the diaphragm 28-2 is raised. Is lifted upward and deformed to generate a negative pressure in the space 44.

The lever 35-2 extends greatly downward, and the lower end is greatly bent inward so that the tip 59 becomes relatively thin and enters the inside of the opening of the frame 42 and hits the tube body 31.
In this embodiment, the tube body 31 is not pushed in the length direction when forming a negative pressure as in the other embodiments, but is bent by the movement of the lever 35-2.
The tube body 31 of this embodiment has a recessed portion or a recessed portion 61 that is largely inwardly bent or deformed, and the recessed portion 59 of the lever 35-2 enters the recessed portion 61. ing. Further, the lower end portion of the tube body 31 is configured to move freely within the bottle 47.

  That is, in this embodiment, when the lever 35-2 is operated so as to move in the direction of the arrow D3, first, the tip portion 59 enters the concave portion 61 of the tube body 31, and the tube body 31 is deformed. The inner walls are brought into close contact with each other and further bent to close the hollow space 45 inside. At this time, since the tip 59 is located above the convex portion 54-2 of the inner wall of the frame 42, the tube body 31 is crushed so as to be sandwiched. Then, the bent portion 32 is blocked, and the tip 35a of the lever 35-2 passes the distance L1, reaches the boss 57, and further rises, so that the central portion of the diaphragm 28-2 is lifted upward and deformed. By doing so, a negative pressure is generated in the space 44.

Thus, after the passage 45 connecting the space 44 and the bottle 47 is securely closed, a slight time difference is formed between the sealing of the tube body 32 and the negative pressure generation so that the negative pressure is generated in the space 44. Therefore, it is possible to more reliably prevent leakage even if the negative pressure is slight.
Other functions and effects are the same as those of the first embodiment.
In other embodiments, a time difference may be similarly formed.

By the way, the present invention is not limited to the above embodiment.
For example, the negative pressure suction means may not be a diaphragm structure, but may be a negative pressure generated by a piston and a cylinder, or may be configured as a substantially spherical pump. In addition, as long as it has a configuration for opening and closing the tube body, instead of manual milking, it may be a so-called electric milking machine that electrically drives a motor or diaphragm so as to fluctuate negative pressure and atmospheric pressure intermittently, You may comprise the drive means as a separate installation type | mold from the breast pump main body, and you may comprise so that it may connect with another tube. In addition, each structure of each embodiment can mutually be replaced, or each structure of each embodiment and a modification may be abbreviate | omitted as needed, and may be combined with the other structure which is not demonstrated.

The schematic sectional drawing of the milking machine which concerns on the 1st Embodiment of this invention. The partial top view of the structure of FIG. The schematic perspective view of the milking machine concerning the 2nd Embodiment of this invention. The principal part sectional drawing of the unused state in the milking machine which concerns on the 2nd Embodiment of this invention. The principal part sectional drawing of the movement state in the milking machine which concerns on the 2nd Embodiment of this invention. The schematic sectional drawing of the milking machine which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 20 ... Milking machine, 21 ... Milking machine main body, 22 ... Milking part, 24 ... Contact part, 25 ... Negative pressure suction means, 28 ... Negative pressure production | generation part (diaphragm) 31 ... Tube body, 32 ... Bent part, 47 ... Bottle

Claims (5)

A breast pump main body including a milking unit that abuts on the breast of the user and milks the milk by negative pressure, and negative pressure suction means for generating the negative pressure;
A storage means that can be attached to and detached from the breast pump main body and can store milked milk,
A hollow tube that is disposed between the breast pump main body and the storage means, and has elasticity that is used as an opening / closing means for temporarily stopping or allowing the milk milked by the breast pump main body to move to the storage means. Has a body and
The tube body is deformed corresponding to the inside of the milking part being brought into a negative pressure state by the negative pressure suction means, and the inner walls are brought into close contact with each other,
The milking device, wherein the tube body is restored and the inner walls are separated from each other in response to the inside of the milking part being brought into a negative pressure release state by the negative pressure suction means.   The said negative pressure suction means is provided with the deformation | transformation acceleration | stimulation means for providing or accelerating | stimulating the deformation | transformation which makes the inner walls approach or space apart with respect to the tube body which is the said opening / closing means. Milking machine.   The breast pump according to claim 1, wherein the negative pressure suction unit includes a negative pressure generation unit and a manual lever for causing the negative pressure generation unit to perform a negative pressure generation operation. .   The milking part is disposed inside the shape holding part, and is attached to and detached from the shape holding part. A relatively flexible abutting portion that is in contact with the one end of the diaphragm-shaped negative pressure generating portion, and is formed integrally with or separately from the one end of the diaphragm-shaped negative pressure generating portion. The breast pump according to any one of claims 1 to 3, characterized in that the other end of the generating unit is connected to the tube body as the opening / closing means integrally or separately.   5. The breast pump according to claim 4, wherein the tube body as the opening / closing means is configured to be deformed when the tube body is displaced and bent along with the deformation movement of the diaphragm.

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