DE102005026880A1 - Manual breast pump for drawing milk from a nursing mother has a handle lifting a sliding member and a piston which creates a vacuum in drawing milk and opens the blocked valve where drawn milk is temporarily stored - Google Patents

Abstract

The breast shield (121) is urged against a breast while the other hand squeezes the handle (19). The links (181,182) straighten to lift the sliding member along the grooves (134) and lift the piston (15) with respect to the cylinder (14). This creates a vacuum which is communicated to the funnel (12) for drawing milk from the breast. Milk flows through the cap and seal lip and drops to the blocked valve for temporary storage. When handle is released, links pivot toward each other to move the sliding members and the pivot to exert force to open the valve for dropping the milk into the bottle.

Description

Background of the invention

(a) Field of the invention

The The invention relates to a manually operated breast pump, with one hand can be operated.

(b) description of the current State of the art

Nursing mothers often use mechanical breast pumps to remove milk from the breast, which can then be used to feed the child. Since it is generally not used immediately, the pumped milk must be cooled. A conventional manually operated breast pump is in 1 shown. It consists of a front facing funnel ( 70 ) for putting on the chest and an elastic balloon ( 71 ) at the rear end. A pipe ( 701 ) with a reservoir ( 702 ) at the bottom connects both. For use, first the balloon ( 71 ) and then the funnel ( 70 ) on the chest. Then the balloon ( 71 ) let go. The resulting negative pressure leaves milk in the tube ( 701 ) and from there into the reservoir ( 702 ) flow. The disadvantage of this construction is that the reservoir ( 702 ) has a very limited capacity and the pumped milk must therefore often be transferred to a larger bottle. This can easily lead to contamination of the milk.

2 shows another conventional breast pump. It has a forward facing funnel ( 80 ), an elastic balloon ( 82 ) at the rear end, a connecting piece ( 801 ) for the funnel ( 80 ) located at the rear end of the funnel ( 80 ) and by means of a hose ( 821 ) with the balloon ( 82 ) and a bottle ( 81 ), which with the fitting ( 801 ) and with the funnel ( 80 ) connected is. For use the mother holds the bottle ( 81 ) with one hand and sets the funnel ( 80 ) on the chest. With the other hand she presses the balloon ( 82 ) regularly together and then lets it go again. She must interrupt this process more often to massage her breast with her hand, so that the milk secretion is stimulated. There is therefore a need for a breast pump with genuine one-hand operation.

Summary of the invention

main goal The invention is a manual breast pump for one - handed operation, to a smoother To achieve milk pumping. Another goal is the breast pump to construct so that they to be easily disassembled for cleaning and sterilizing can. To achieve this and other objects, the present invention shows a manual breast pump. It contains a bottle with an annular seal at the upper end and a valve in the center of the annular seal, a funnel for placing on the chest with a cylindrical Connection piece with thread for the Bottle, a holder with a standing cylinder and a journal at the lower outer end, two opposite each other bottom flaps, which serve for attachment to the fitting, two out of the cylinder projecting post with two grooves on the inside and a hollow above and a cylinder with a circular going down Lock for attachment to the fitting to a close connection to reach with the holder. In the cylinder, a piston can with a piston ring on one side and an extension on the other Move page. A slider with an upper crossbar that move in the grooves of the posts can be connected with the approach. A shaman part with a bearing on the top and two hooks at the bottom is in the cavities the post attached. An articulated arm consists of an upper limb with a C-shaped Bearing slot for receiving the crossbar and a lower link with a C-shaped Bearing slot for receiving the journal and a spring over the connecting joint goes. A flexible handle with a pin that engages in the bearing of the hinge part includes the arm and an elastic Element that extends downwards from an inner surface and communicating with the arm.

To putting the funnel on the chest, the handle is pressed, whereupon the arm stretches and the piston is pulled up, causing a vacuum is created which extends into the funnel and the Milk sucks, after which it penetrates into the closed valve and is cached there. After releasing the handle moves the piston down and the valve opens. After that, the Milk flow into the bottle.

Short description of drawings

1 Conventional manual breast pump seen from the side

2 Another embodiment of a conventional manual breast pump seen from the side

3 and 4 Exploded view of a preferred embodiment of a breast pump in accordance with the present invention

5 The breast pump after 4 , partially assembled

6 Perspective representation of in 5 shown parts in the assembled state with two matching handle parts

7 and 8th Schematic diagrams showing the pumping action Detailed description of the preferred embodiment

3 to 8th show a manual breast pump, which is in accordance with a preferred embodiment of the present invention. It contains a bottle ( 11 ), a funnel ( 12 ), One Base ( 13 ), a cylinder ( 14 ), a piston ( 15 ), a sliding part ( 16 ), a joint part ( 17 ), an arm ( 18 ) and a handle ( 19 ).

The bottle ( 11 ) has at the top at its opening an annular sealing lip ( 110 ), whose center acts as a valve ( 111 ) is trained. The funnel ( 12 ) has a funnel mouth ( 121 ) for placing on the chest and at the end of the funnel neck a circular hollow connection ( 122 ) with a thread on the bottle ( 11 ) can be screwed. The base ( 13 ) has a semicircular vertical shirt ( 131 ) with a turning bar ( 132 ) on a boom near its lower end and two down facing opposite legs ( 133 ) for attachment to the periphery of the terminal ( 122 ) serve, as well as at the top two opposing, upwardly pointing posts ( 134 ) each having a longitudinal groove ( 135 ) on its inside and a Rasthöhlungen ( 136 ) at the upper end.

The cylinder ( 14 ) has a bore ( 141 ) and a down going round neck ( 142 ) for connection to the terminal ( 122 ).

In this position, the shirt ( 131 ) on the cylinder ( 14 ) and the piston ( 15 ), the bottom of a piston ring ( 151 ) and above an approach ( 152 ) has in the bore ( 141 ) of the cylinder ( 14 ) introduced. The sliding part ( 16 ), the top of a crossbar ( 161 ) and has a recess at the bottom ( 162 ) into which the approach ( 152 ) firmly moves along the longitudinal grooves ( 135 ). The elongated joint part ( 17 ) with a sliding bearing ( 172 ) above and two latching hooks ( 171 ) below, with these in the Rasthöhlungen ( 136 ) engaged. The arm ( 18 ) has an upper member ( 181 ), which has a C-shaped slot ( 1811 ) with the crossbar ( 161 ), a lower member ( 182 ), which has a C-shaped slot ( 1821 ) with the turning bar ( 132 ) and a torsion spring ( 183 ) connected to the connection of upper ( 181 ) and lower ( 182 ) Limb is attached. The flexible handle ( 19 ) consists of two flexible mirror-image halves, each of which has a journal ( 191 ) for engagement in the plain bearing ( 172 ) and a downward-pointing leaf spring ( 85 ) for connection to the arm ( 18 ) contains.

7 and 8th describe the pumping process in detail. The mother presses the funnel mouth ( 121 ) with one hand lightly against the chest and presses with the other the handle ( 19 ) and thus the arm ( 18 ) against the base ( 13 ). This will cause lower ( 182 ) and upper ( 181 ) Limb and the arm ( 18 ), whereby the moving part ( 16 ) along the longitudinal grooves ( 135 ) moves because. the parts in question are connected to each other. This pulls the piston ( 15 ) out of the hole ( 141 ) of the cylinder ( 14 ), causing a negative pressure in the space between the piston ring ( 151 ) and bottom of the cylinder ( 14 ). This negative pressure acts through the connection ( 122 ) and the funnel ( 12 ) so that milk enters the funnel ( 12 ) is sucked. This milk flows from the funnel ( 12 ) through the connection ( 122 ) over the sealing lip ( 110 ) in the valve ( 111 ), where it is temporarily held, since the valve ( 111 ) is closed (see 7 ). Releasing the handle ( 19 ) causes the opening angle between lower ( 182 ) and upper ( 181 ) Member by the force of the torsion spring ( 183 ) is reduced again and that with the upper ( 181 ) Member connected sliding part ( 16 ) along the longitudinal grooves ( 135 ) moves down. The piston ( 15 ) in the hole ( 141 ) of the cylinder ( 14 ) also moves down, which puts pressure on the valve ( 111 ) and it opens, which lets the milk drip into the bottle (see 8th ). By repeating the above procedure several times, it is possible by a simple and convenient action to make milk in the bottle ( 11 ) get saved. Moreover, the milk pump can be easily disassembled for cleaning purposes into their individual parts.

Claims (2)

A manual milk pump comprising: - a bottle with an annular sealing lip whose center is designed as a valve at the upper end; A funnel having a breastplate for being placed on the breast and a cylindrical funnel neck fixed by means of a hollow circular connection on the upper bottle opening; - A base with an upright shirt, the bottom, outside has a pivot and two opposing down facing La for mounting on the hollow circular terminal, as well as two opposing upstanding posts each having a longitudinal groove on the inside and a locking groove at the upper end; A cylinder with a circular support at the bottom for attachment to the hollow circular connection, whereby it can be connected to the shirt; A movable piston having a piston ring at the lower end and a connecting piece at the upper, which can move in the cylinder; - A sliding part which can move along the longitudinal grooves, has a cross bar at the top and is secured to the bottom of the connector; - A hinge part, which has a bearing above and below two hooks for attachment in the locking grooves; - An arm having an upper member with a C-shaped bearing slot for connection to the crossbar and a lower member with a C-shaped bearing slot for connection to the pivot, and a torsion spring connected to the upper and the lower member; - A flexible handle for embedding the arm, which has a hinge pin for connection to the hinge and an elastic member for connection to the arm, which extends from an inner surface downwardly extending; wherein: after putting the breastplate on the human breast and squeezing the elastic handle, the arm is stretched and the sliding part moves in the longitudinal grooves and thus pulls the piston out of the cylinder, thus in the part of the cylinder which is under the piston ring a vacuum is created which continues to the funnel and draws milk from the breast which drips through the funnel and the sealing lip into the closed valve for intermediate storage and - after release of the handle causes the upper and lower limb to collapse again causing the piston to move downwards and exerts a force on the valve that opens it and lets the milk drip into the bottle. The manual breast pump of claim 1, wherein the elastic element is a leaf spring.