PROBLEM TO BE SOLVED: To provide a drug injection device capable of effectively preventing a storage container from being mistakenly inserted into a body cavity such as a vagina or anus. Kind Code: A1 A drug injection device for injecting a fluid drug into a body, wherein a long-sized insertion portion to be inserted into the body from one end side and a fluid drug are stored, and the other of the insertion portions is provided. A storage container connected to an end portion is provided, and the insertion part is formed inside thereof, and a drug channel part to which a drug extruded from the storage container is guided, and the drug channel part and the outside are provided. A drug injection characterized by comprising a communicating drug discharge hole, and the other end of the insertion part having a bulging part that bulges in a direction perpendicular to the longitudinal direction of the insertion part. Equipment. [Selection diagram] Fig. 3【課題】貯留容器が、膣や肛門等の体腔内に誤って挿入されてしまうことを効果的に防止することができる薬剤注入器具を提供する。【解決手段】体内に流動性薬剤を注入する薬剤注入器具であって、一方端側から体内に挿入される長尺状の挿入部と、流動性薬剤が貯留されており、前記挿入部の他方端部に接続される貯留容器とを備えており、前記挿入部は、その内部に形成され、前記貯留容器から押し出された薬剤が導かれる薬剤流路部と、前記薬剤流路部及び外部を連通する薬剤吐出孔とを備え、前記挿入部の他方端部は、前記挿入部の長手方向に対して垂直な方向に向かって膨出する膨出部を備えていることを特徴とする薬剤注入器具。【選択図】図３
