PROBLEM TO BE SOLVED: To restrict the rotation of an adaptor to a blood sampling holder of a lock type, even being an adaptor corresponding to a blood sampling holder of both screw type and lock type.SOLUTION: An adaptor 20 is mounted on a mounting part 4 which is provided in a bottom 7 of a blood sampling holder 3 of a bottomed hollow cylindrical body and is formed with a through hole 9. The adaptor 20 includes: a hollow body part 21 which can be connected to a butterfly needle 40 for blood sampling from the human body, and in which sampled blood flows； a flange part 22 which is provided at a base end side of the body part 21 and is abutted on a tip face 8 of the mounting part 4； and a cylindrical projection 23 which extends from the flange part 22 to an opposite direction to the body part 21, and is inserted into the through hole 9 of the mounting part 4. In the outer periphery of the projection 23, a male screw part 27 is formed from a flange part 22 side, and a notch part 26 whose part in the circumferential direction of the base end side than the tip of the male screw part 27 is notched is formed.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2019,JPO&INPIT【課題】螺合する形式と係止する形式の両方の採血用ホルダーに対応するアダプターであっても、係止する形式の採血用ホルダーに対してアダプターの回転を規制すること。【解決手段】アダプター２０は、有底中空筒状体の採血用ホルダー３の底部７に設けられ貫通孔９が形成された装着部４に、装着される。 アダプター２０は、人体から採血する翼状針４０に接続可能で採血した血液が流れる中空の本体部２１と、該本体部２１の基端側に設けられ装着部４の先端面８に当接するフランジ部２２と、該フランジ部２２から本体部２１と反対方向に延設され装着部４の貫通孔９に挿入される円筒状の突出部２３とを備える。該突出部２３の外周には、フランジ部２２側から雄ねじ部２７が形成され、該雄ねじ部２７の先端よりも基端側の周方向の一部が切り欠かれた切欠き部２６が形成されている。【選択図】図５
