PROBLEM TO BE SOLVED: To provide a liquid medicine administration device capable of quickly detecting the occlusion caused in a flow channel of liquid medicine.SOLUTION: A liquid medicine administration device 1 includes a liquid medicine storage part 13, a pusher member 18, a pusher operation part 22, a drive part 15, a housing 11, a strain sensor 32, and a control part. The liquid medicine storage part is filled with liquid medicine. The pusher member pushes out the liquid medicine put in the liquid medicine storage part. The pusher operation part operates the movement of the pusher member. The strain sensor 32 measures an amount of strain of the housing 11, and outputs the measured amount of strain as amount-of-strain information. The control part detects the occlusion in a flow channel where the liquid medicine is sent out based on the amount-of-strain information received from the strain sensor 32, and controls the drive part 15.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】薬液の流路に発生した閉塞を素早く検知することができる薬液投与装置を提供する。【解決手段】薬液投与装置1は、薬液貯蔵部13と、押し子部材18と、押し子操作部22と、駆動部15と、筐体11と、ひずみセンサ32と、制御部と、を備えている。 薬液貯蔵部には、薬液が充填される。押し子部材は、薬液貯蔵部に充填された薬液を押し出す。押し子操作部は、押し子部材の移動を操作する。ひずみセンサ32は、筐体11のひずみ量を測定し、測定したひずみ量をひずみ量情報として出力する。制御部は、ひずみセンサ32から受信したひずみ量情報に基づいて、薬液が送り出される流路の閉塞を検知し、駆動部15を制御する。【選択図】図1
