| 摘要 |
PROBLEM TO BE SOLVED: To prevent a solution from being leaked in a connecting part of a needle and a needle port.SOLUTION: A port inside passage 60 of a needle port 23 includes a guide area 62 having an inner diameter larger than an outer diameter of a main body 31a of a needle 31 and a flow passage area 64 having an inner diameter smaller than the outer diameter of the main body 31a of the needle 31 and larger than a tip diameter of a tapered portion 31b of the needle 31, and a tapered area 63 is provided which is tapered for connecting these areas. In the tapered area 63, a tapered angle &thetas;2 is larger than a tapered angle &thetas;1 of the tapered portion 31b of the needle 31 and a width (w) is smaller than 1/2 of a difference between the outer diameter of the main body 31a of the needle 31 and the tip diameter. |
