PROBLEM TO BE SOLVED: To provide a medical stopcock adapted to obtain an accurate positioning sensation without forming such a clearance that bubbles enter between a cylindrical part and a hollow shaft part immediately before a flow passage is properly connected by turning a cock.SOLUTION: The medical stopcock includes the cylindrical part 3 having manifolds 2 on the outer periphery, and the hollow shaft part 4 turnably fitted to the cylindrical part 3, and having a mutual connection path 5 for the manifolds 2, and a cock 6 provided on one end side. In the medical stopcock, the other end side edge of the hollow shaft part 4 is provided with slits 9 engaged with protrusions 10 provided in the corresponding positions on the inner surface of the cylindrical part 3, and is configured to transmit the positioning sensation in a state of not forming such a large clearance that bubbles enter between the cylindrical part and the shaft part even when the manifolds are properly connected to each other by turning the shaft part together with the cock. Two slits 9 are provided in a diametrical direction in the other end side edge of the hollow shaft part so that the other end side edge of the hollow shaft part 4 is easily compressed toward the small diameter side.COPYRIGHT: (C)2012,JPO&INPIT【課題】本発明は、コックを回して流路が正しく繋がる直前に、円筒部と中空軸部との間に気泡の入るような隙間ができず、的確な位置決め感が得られるようにした医療用栓体を提供する。【解決手段】本発明に係る医療用栓体は、外周に分岐管2を有する円筒部3と、該円筒部3に回動可能に嵌合し、分岐管2同士の接続路5を有し、一端側にコック6を設けた中空軸部4とからなり、前記中空軸部4の他端側端縁に、前記円筒部3の内面の対応位置に設けた突部10に係合できる割溝9を設けたことを特徴とし、コックとともに軸部を回して分岐管同士を正しく繋いだときにも、円筒部と軸部との間に気泡の入るような大きな隙間を作らせない状態にて位置決め感が伝わるように構成した。また、前記割溝9が、前記中空軸部の他端側端縁に直径方向に2個設け、中空軸部4の他端側端縁を小径側に圧縮し易くしている。【選択図】図1
