| 摘要 |
PROBLEM TO BE SOLVED: To provide a medical flow channel connection member more facilitating the insertion of a syringe or the like, generating no liquid leak, simple, easy and economical to mold and having a wide application range. SOLUTION: In a drawing, the float 2 and rubber button 3 built in the side pipe 6 of a needleless mixing and injecting pipe 1 are arranged in up and down relationship so that the float cylinder 22 of the float 2 is inserted in the inner hole 36 of the protruded part 32 of the rubber button 3 and, as the float 2 moves vertically, the float cylinder 22 slides up and down and the leading end thereof forces the closure hole positioned at the lower part of the inner hole 36 of the protruded part 32 of the rubber button 3 open. As a result, the closure hole is opened to enable the flow of a liquid. A leak preventing protruded part, the so-called seal lip is provided to the outer surface of the rubber button or the inner wall of the inner hole 36. |
