Breast pump

Details Breast pump Breast pump

1997-05-23

1999-09-07

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 74, 604346, 417306, A61M 106

Patent

active

059479230

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

This invention relates to a breast pump for sucking out mother's milk by negative pressures.


BACKGROUND OF THE INVENTION

Generally, a breast pump for sucking out mother's milk includes a hood portion to be fitted on a breast, a pump for generating negative pressures in the hood portion and a milk reservoir for collecting the milk.
This kind of the breast pump is disclosed, for example, in an unexamined Japanese Patent Publication Hei 1-317448. In a conventional breast pump, a manually operatable pump is detached from the hood portion and reservoir and, then, is equipped to a driving unit. The piston of the pump is connected to an electrically powered piston driving means including a motor, or the like, which is equipped in a driving unit. The piston is reciprocated to generate negative pressures in the hood position for sucking mother's milk.
However, the above conventional breast pump is too large to carry because a driving unit is essential. Thus, it is desirable that a breast pump for sucking out mother's milk should be simple and easy to suck out mother's milk.
This invention is to solve the above problems, and its object is to provide a breast pump which is simple in structure and easy to suck out mother's milk easily.


SUMMARY OF THE INVENTION

The above object will be accomplished by the present invention. A breast pump for sucking out mother's milk according to the present invention includes a sucking portion to be fitted to one's breast, a negative pressure generating means mounted in the sucking portion for generating negative pressures therein, a driving means attached to the sucking portion, a driving power transmitting means attached to the sucking portion for repeatedly generating negative pressures by transmitting a driving power of the driving means and a reservoir connected to the sucking portion for reserving mother's milk from the sucking portion.


BRIEF EXPLANATION OF THE DRAWINGS

FIG. 1 is a perspective view of a breast pump according to the present invention.
FIG. 2 is a plan view and a partial cross-sectional side view of the breast pump shown in FIG. 1.
FIG. 3 is a perspective view of a cylindrical portion of the breast pump shown in FIG. 1.
FIG. 4 is a perspective view of a piston portion of the breast pump shown in FIG. 1.
FIG. 5 is a perspective view of a driving means and driving power transmitting means of the breast pump shown in FIG. 1.
FIG. 6 is a perspective view of a pressure adjusting means of the breast pump shown in FIG. 1.
FIG. 7 is a perspective view of a pressure adjusting means, in a disassemble state, of the breast pump shown in FIG. 6.
FIG. 8 is a flow chart showing an operation of the breast pump shown in FIG. 1.
FIG. 9 is a first cross-sectional view showing an operation of the breast pump shown in FIG. 1.
FIG. 10 is a second cross-sectional view showing an operation of the breast pump shown in FIG. 1.
FIG. 11 is a third cross-sectional view showing an operation of the breast pump shown in FIG. 1.
FIG. 12 is a forth cross-sectional view showing an operation of the breast pump shown in FIG. 1.
FIG. 13 is a fifth cross-sectional view showing an operation of the breast pump shown in FIG. 1.
FIG. 14 is an example of a graph showing the sucking pressure of the breast pump shown in FIG. 1.
FIG. 15 is an example of a graph showing the sucking pressure of a baby.
FIG. 16 is a side view of another embodiment having a nipple adapter according to the present invention.
FIG. 17 is a front view of the nipple adapter.
FIG. 18 is a cross-sectional view of the nipple adapter taken along the line A--A in FIG. 17.
FIG. 19 is a rear view of the nipple adapter.
FIG. 20 is a perspective view of the breast pump in a disassembled state shown in FIG. 1.
FIG. 21 is a side view of another embodiment of a breast pump according to the present invention.
FIG. 22 is a plan view of still another embodiment of a breast pump according to the present invention.


DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Preferred embodiments of the present invention will n

REFERENCES:
patent: 4673388 (1987-06-01), Schlensog et al.
patent: 4759747 (1988-07-01), Aida et al.
patent: 4883464 (1989-11-01), Morifuji
patent: 4886494 (1989-12-01), Morifuji
patent: 4892517 (1990-01-01), Yuan et al.
patent: 4964851 (1990-10-01), Larsson

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