PROBLEM TO BE SOLVED: To provide a drug solution administration device that can prevent excessive loading of a drug solution with a simple configuration.SOLUTION: The drug solution administration device includes: a drug solution container 4 having a deformable soft part 41 and an excessive loading detecting part 45 provided in a position at which the soft part 41 arrives when a drug solution is loaded in the drug solution container 4 with an amount more than a prescribed amount, and for detecting an excessive loading of the drug solution by the abutment of the soft part 41.COPYRIGHT: (C)2015,JPO&INPIT【課題】簡易な構成で薬液の過充填を防止できる薬液投与装置を提供すること。【解決手段】薬液投与装置は、変形可能な軟質部41を有する薬液容器4と、前記薬液容器4に規定量を超える薬液が充填されたときに前記軟質部41が及ぶ位置に設けられ、前記軟質部41の当接により前記薬液の過充填を検知する過充填検知部45とを備えている。【選択図】図9
