JPH0450035Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a breast pump.

(b) Prior Art As shown in Fig. 6, conventional breast pumps have a breast abutment part a in the shape of a flap at the base end, an inner cylinder b that functions as a piston rod, and an outer cylinder b that functions as a piston cylinder. The rubber packing 1 is attached to the tip of the inner tube b, and with the inner tube b inserted into the outer tube c from the tip, the nipple part a is brought into contact with the mother's nipple, and the outer tube is inserted. When the cylinder c is gently pulled and slid, negative pressure is created in the space formed by the rubber packing d, which functions as a piston ring, and the outer cylinder c, and a suction force is applied to the teat, making it possible to express milk. The required amount of milk can be expressed by operating the piston of the outer cylinder c.

(c) Problems to be solved by the invention However, in the above-mentioned breast pump, since the outer cylinder c, which functions as a piston cylinder, is configured to also perform the function of storing milk, when the piston of the outer cylinder c is operated, Care must be taken when operating the inner cylinder B so that the tip of the inner cylinder B does not reach the milk collected in the outer cylinder C, and the outer cylinder C must be tilted slightly downward to make it easier for the milk to collect. Another problem was that the breast pump had to be stopped during operation.

(d) Means for solving the problem Therefore, in the present invention, the milking part and the milk storage part are branched and connected to each other in a breast pump body having a funnel-shaped milk stop part, and the milking part and the milk storage part are connected to each other in a branched manner. On the lower side, there is a mounting part that opens downward and is used to removably screw and attach the upper end opening of the milking storage part, and inside the mounting part is a guide tube that is connected to the milk rest part. The lower end of the guide tube projects into the milking reservoir to provide an on-off valve having a disk-shaped valve body, and a piston cylinder is connected to the rear of the breast pump so that a piston rod having a packing is slidable. A communicating hole is provided at the upper end of the guide tube between the piston cylinder and the breast rest, and a protruding wall is provided inside the guide tube to shield the front of the communicating hole. The structure is configured so that suction can be carried out inside the main body as the piston cylinder slides backward, and an outside air inflow hole is provided at the rear end of the piston cylinder, so that the milk is pumped through the milking section and pumped into the storage section. It is an object of the present invention to provide a breast pump which can completely eliminate the above-mentioned problems by configuring the breast pump to allow the fluid to flow into the breast.

(e) Effect When expressing milk, when the funnel-shaped breast contact part is brought into contact with the mother's nipple and the piston rod of the milking part is slid backward, the air pressure inside the breast pump body becomes negative due to the suction action. , the disc-shaped valve body of the guide tube closes and blocks the milk while simultaneously expressing milk. When the piston rod is temporarily stored in the guide cylinder and slides until the seal position of the piston rod is located behind the outside air inflow hole, outside air flows in through the outside air inflow hole and the inside of the breast pump body becomes at the same pressure as the outside air pressure. Therefore, the disc-shaped valve body falls and becomes open, allowing the milk in the guide cylinder to flow out into the milking reservoir. In this case, since the protruding wall is provided in the guide cylinder, the milk will not flow into the piston cylinder.

By repeating this piston operation a required number of times, milk is accumulated in the reservoir.

(F) Effect According to the present invention, since the milking part and the milk storage part are branched and connected separately, milking can be performed quickly and easily, and moreover, it does not cause pain to the teat. This has the effect that the milk can be expressed without any problem, and the inconvenience of causing trouble to the mother's body can be reliably avoided.

In addition, the present invention provides a guide cylinder that is connected to the milking part, and the lower end of the guide cylinder projects into the milking reservoir part to provide an on-off valve part having a disc-shaped valve body. A piston cylinder is connected to the rear of the breast pump, and a piston rod with a packing is slidably inserted thereinto, and an outside air inflow hole is bored at the rear end of the piston cylinder. The inside of the main body becomes completely negative pressure, making it possible to express a large amount of milk smoothly.Furthermore, when the piston rod is pulled and slid to the rear end position, outside air flows in and opens the disc-shaped valve body to open the guide cylinder. Milk can be reliably stored in the storage part during milking, and milking can be performed efficiently despite the simple structure as a whole.

In addition, in the present invention, a communication hole is provided between the piston cylinder and the guide cylinder at the upper end of the guide cylinder, and a protruding wall is provided inside the guide cylinder to block the front side of the communication hole. The milk stored in the cylinder does not flow into the piston cylinder, so milking can be performed efficiently.

(G) Example The example of the present invention will be explained in detail based on the drawings.
(A) shows a breast pump, in which a piston-type breast pump 2 and a milk reservoir 3 are branched and removably attached to a breast pump main body 1, respectively.

The breast pump main body 1 is provided with a funnel-shaped nipple part 4 integrally molded on one side, and the milk part 4 is connected to the mother's nipple M.
The milking section 2 sucks the air inside the main body 1 so that the teat head M
It is configured to store more expressed milk in a milking storage section 3.

That is, on the other side of the breast pump main body 1 which has the milking part 4 on one side, there is provided a connecting part 5 which is coaxial with the milking part 4 and opens on the opposite side, and the milking part 2 is connected to the connecting part 5. The tip of the piston cylinder 6 is removably screwed to enable communication and connection with the main body 1, and a piston rod 7 is slidably inserted into the cylinder 6, so that as the rod 7 slides backward, The main body 1 is configured to be able to carry out suction, and a gasket 8 made of an elastic rubber body is fitted to the tip of the rod 7, so that only the rear edge 8-1 of the gasket 8 is closed. It is configured to slide in contact with the inner circumferential wall of the piston cylinder 6 to maintain sealing performance, and a gap S is formed between the circumferential surface of the packing 8 and the inner circumferential wall of the piston cylinder 6.

Moreover, an outside air inflow hole 9 is bored in the rear end of the piston cylinder 6, so that the rear end edge 8-1 of the gasket of the piston rod 7 that has been slid backward is located at the rear of the inflow hole 9. When the outside air flows through the inlet hole 9, the surrounding surface of the gasket 8 and the cylinder 6
The rod 7 is configured to flow into the cylinder 6 through a gap S formed between it and the inner circumferential wall, thereby facilitating the forward sliding of the rod 7 by relaxing the internal and external air pressure, and preventing milking from entering the milking reservoir 3. We are trying to facilitate the flow of products into the market.

Further, on the lower side of the breast pump main body 1, there is provided a mounting part 10 which opens downward and is used to removably screw onto the upper end opening 3-1 of the milking reservoir part 3. A lower end portion 11-1 of a guide tube 11 connected to the guide tube 10 is opened to protrude into the guide tube 10, and an on-off valve portion 12 is removably fitted into the lower end portion 11-1.

The on-off valve part 12 has a short cylindrical main body 13 in the center,
A cutout window 15 for vertical movement of the valve body is provided, and the cutout window 15
A disc-shaped valve body 14 is installed inside the breast pump body 1 so as to be movable up and down, and the valve body 14 moves upward during suction by the milking section 2 and comes into close contact with the lower end surface 11-2 of the guide cylinder 11, so that the valve body 14 moves upwardly when the milking section 2 sucks the milk. The valve body 14 is configured to have a completely negative pressure state, and the valve body 14 temporarily closes the guide cylinder 1 for milking.
1, and the above-mentioned outside air inflow hole 9
Due to the inflow of outside air through the valve body 14, the valve body 14 falls downward under its own weight, and the guide tube 11 passes through the cutout window 15.
The inside and the inside of the milking storage section 3 are in communication with each other, so that the milk flows into the inside of the milking storage section 3 and is stored therein.

Reference numeral 14-1 denotes a protrusion protruding from the periphery of the disc-shaped valve body 14 to prevent it from falling off. 13-1 indicates a valve support portion.

Reference numeral 16 denotes a communicating hole, which is formed between the upper end position of the guide tube 11 and the upper side surface of the breast pump body 1, and is used to suck air in the breast pump body 1 and to connect the piston cylinder. 6, outside air flows into the main body 1.

17 is a guide cylinder 11 from the upper side of the breast pump main body 1.
This is a protruding wall that is vertically installed inside, and the protruding wall 17 blocks the front of the communicating hole 16 so that milking can be done through the communicating hole 16.
This prevents the piston from flowing into the cylinder 6.

18 is an adapter;
is formed into a funnel shape that can be fitted into the breast rest part 4,
It is used as appropriate depending on the size of the mother's nipple M.

Therefore, when milking, use adapter 1 as appropriate.
8 to the nipple part 4, and the nipple part 4 is brought into contact with the mother's nipple M, and the piston rod 7 is attached to the nipple part M.
If the rod is pulled and slid further apart, the same rod 7
Due to the suction action, the air pressure inside the breast pump main body 1 becomes negative pressure, and the disc-shaped valve body 14 of the on-off valve part 12 fitted to the lower end 11-1 of the guide cylinder 11 moves to the lower end surface 11-2 of the guide cylinder 11. By closely contacting the guide tube 11 and closing the lower end of the guide tube 11, the milk that is expressed at the same time is temporarily stored in the guide tube 11, and the rear end edge 8-1 of the packing of the rod 7 is lower than the outside air inflow hole 9. When it is pulled and slid to the rear position, outside air flows into the cylinder 6 from the inflow hole through the gap S formed between the circumferential surface of the packing 8 and the inner circumferential wall of the piston cylinder 6, and milking occurs. In order to make the inside of the container main body 1 the same pressure as the outside pressure, the disc-shaped valve body 14 falls under its own weight, releases the blockage at the lower end of the guide tube 11, and releases the milk inside the guide tube 11 into the opening/closing valve section. The milk flows out into the milk reservoir 3 through the cutout window 15 of the main body 13, and by repeating this piston operation a required number of times, the milk accumulates in the reservoir 3, and the reservoir 3 can be attached as appropriate. When the nipple is unscrewed from the part 10 and a nipple is attached to the upper end opening 3-1 of the reservoir part 3, it becomes a nursing bottle and can be used for breastfeeding as is.

[Brief explanation of drawings]

FIG. 1 is a side view of a breast pump according to the present invention. Second
The figure is a side sectional view of the breast pump. Figure 3 is an enlarged view of the main parts. FIG. 4 is a sectional view taken along the - line in FIG. 3.
FIG. 5 is an enlarged sectional view of the main part. FIG. 6 is a conventional explanatory diagram. A... Breast pump, 1... Breast pump body, 2... Milking section, 3... Milking reservoir, 3-1... Upper end opening,
6... Piston cylinder, 7... Piston rod, 9... Outside air inflow hole, 10... Mounting part, 11...
... Guide cylinder, 12 ... Opening/closing valve part, 14 ... Disc-shaped valve body, 16 ... Communication hole, 17 ... Projection wall.

Claims (1)

[Scope of utility model registration request] A breast pump main body 1 having a funnel-shaped milk stop 4,
The milking section 2 and the milking storage section 3 are branched and connected for communication, and the upper end opening 3-1 of the milking storage section 3 is removably screwed and attached to the lower side of the breast pump main body 1. A mounting part 10 is provided with a downward opening, and a guide cylinder 11 connected to the breast rest part 4 is provided in the mounting part 10.
A lower end 11-1 of the milking section 2 is provided with an opening/closing valve section 12 having a disc-shaped valve body 14 with the lower end 11-1 protruding into the milking reservoir section 3, and a piston cylinder 6 is connected to the rear of the milking section 2 to form a piston rod having a packing 8. A guide tube 11 between the piston cylinder 6 and the breast rest part 4 is provided with a communication hole 16 at its upper end position, and a hole in front of the communication hole 6 is provided in the guide tube 11. A protruding wall 17 is provided to shield the piston rod 7, and the piston rod 7 is configured to be able to draw air into the main body 1 as the piston rod 7 slides backward. A breast pump configured to allow milk expressed through a milking section 2 to flow into a milk storage section 3.