To prevent the generation of coring during the puncturing with a needle by setting an interval between a rubber cock and a thin film above a specific value, in a cock body made of a resin which houses a rubber cock and covers the side being in contact with a liquid medicine of the rubber cock with a thin film made of a resin.
This cock body applied on a transfusion container comprises a frame body 1, a support body 2 with a thin film 21 and a rubber cock 3 housed between the frame body 1 and the support body 2. The frame body 1 is a cap-shaped member made of a resin and has a peelable top surface 11 and a skirt part 12. The top surface 11 is provided with a pull ring 13 to peel it. On the other hand, the support body 2 is a circular member and is inserted and mounted into the undersurface of the skirt part 12 of the frame body 1 to grasp the rubber cock 3. The support body 2 is formed by providing the thin film 21 inside a circular support part. But, the interval (d) between the thin film 21 and the rubber cock 3 is set ≥3mm to restrict the generation of possible coring.
SATO KOJI
HASEGAWA SHUJI
