PROBLEM TO BE SOLVED: To provide a container in which a lid body can be covered on a container body by applying small force to the lid body, the lid body is hardly taken off by non human-induced external force but easily taken off by human-induced external force and great click feeling is generated upon covering the lid body on the container body.SOLUTION: The container is configured to include a bottomed cylindrical container body 1, a cylindrical lid body 3 and a flexible connection part connecting the cylindrical container body and the cylindrical lid body together, and the container is used for sending medical liquid and/or nutrient into the body of a patient. The bottomed cylindrical container body 1 includes: ribs 81, 82 erected on an outer surface of a sidewall 7 in the circumferential direction thereof an outlet port 10 on a bottom face 13 and a tubular catheter connection part 9 connected to the outlet port and provided on the bottom face. The cylindrical lid body 3 includes ribs erected in the circumferential direction on the inner face of a sidewall 5 which is externally fitted onto an upper opening part of the bottomed cylindrical container 1. In the container, the inner ribs are provided as divided ribs 62, 63, 64 and the divided ribs are formed concentratedly on the side wall opposite to the side wall to which the connection part is connected.COPYRIGHT: (C)2012,JPO&INPIT【課題】小さな力の蓋体への付与で蓋体を容器本体に被せることができ、蓋体が容器本体から非人為的な外力によっては外れ難いが、人為的な外力によっては容易に外れ、かつ蓋体を容器本体に被せる時に大きなカチッという感触が生じる容器を提供する。【解決手段】側壁7の外面にその周方向に立設して設けられたリブ81、82、底面13に流出口10、及び流出口に接続された管状のカテーテル接続部9を底面に有する有底の円筒状容器本体1、有底の円筒状容器の上部開口部に外挿される側壁5の内面に周方向に立設して設けられたリブを有する円筒状蓋体3及び円筒状容器本体と円筒状蓋体を接続する可撓性の接続部を有して構成され医療用液体および/または栄養剤を患者内に送り込むために使用する容器において、内壁リブが分断リブ62、63、64として設けられ、かつ分断リブが接続部材が接続する側の側壁と対向側の側壁に集中的に形成されている構成とする。【選択図】図2