| 摘要 |
A liquid leakage between a needle and a needle port is prevented. To this end, a guide section, a passage section, and a tapered section are provided in an in-port path of a needle port. The guide section has an inside diameter larger than the outside diameter of a body of a needle. The passage section has an inside diameter smaller than the outside diameter of the body of the needle and larger than the tip diameter of a tapered portion of the needle. The tapered section connects the guide section and the passage section. The taper angle &thetas;2 of the tapered section is set to be larger than the taper angle &thetas;1 of the tapered portion of the needle, and the width w of the tapered section is set to be smaller than half the difference between the outside diameter of the body and the tip diameter of the needle. |
