| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a breast pump 10 for mother's milk capable of preventing the occurrence of nipple trouble caused by an excessive rise in negative pressure. Ž<P>SOLUTION: The breast pump 10 for mother's milk includes an outer cylinder 12 opened at both ends thereof and an inner cylinder 11 which is opened at both end parts thereof and of which one end opening 11a is formed into a trumpet shape capable of being brought into pressure contact with the breast so as to cover a nipple and constituted so that the inner cylinder 11 is airtightly fitted in the outer cylinder 12 in an accessible manner to define a mother's milk storage part 16 by the outer cylinder 12 and the inner cylinder 11, the trumpet-shaped opening 11a of the inner cylinder 11 is protruded from one end opening of the outer cylinder 12 and a main check valve 13c, which prevents the air from flowing into the mother's milk storage part 16 from the outside thereof and permits the outflow of air from the inside of the mother's milk storage part 16 to the outside, is provided at the other end opening 12b of the outer cylinder 12. This breast pump is also provided with a sub-check valve 13g which prevents the outflow of air from the inside of the mother's milk storage part 16 to the outside and is opened when the pressure in the mother's milk storage part 16 has a predetermined negative pressure or more to permit the open air to flow into the mother's milk storage part. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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