The medical device of the present invention, the subject a storage unit in which information about the pharmacokinetics in vivo pre-stored for each type of fluorescent agent, a plurality of information stored in the storage unit, fluorescent desired drug is administered Get the diagnosis start time on the basis of the information and the information of the target site, the method of administration to the target part of the fluorescent drug desired, to, and information of the start of the administration time of the fluorescent agent desired, corresponding to the fluorescent agent desired an arithmetic processing unit that, in the time period to reach a diagnosis start time from the start of administration time, at least, to stop the irradiation of the excitation light for exciting the fluorescent agent desired to be irradiated with the excitation light based on the diagnosis start time I have, and a light source control section for controlling such.本発明の医療装置は、生体内における薬剤動態に関する情報が複数の蛍光薬剤の種類毎に予め格納された記憶部と、記憶部に格納された情報と、所望の蛍光薬剤が投与される被検体の対象部位の情報と、所望の蛍光薬剤の前記対象部位への投与方法の情報と、所望の蛍光薬剤の投与開始時刻の情報と、に基づき、所望の蛍光薬剤に対応する診断開始時刻を取得する演算処理部と、少なくとも投与開始時刻から診断開始時刻に達するまでの時間帯において、所望の蛍光薬剤を励起するための励起光の照射を停止し、診断開始時刻に基づいて励起光を照射するように制御を行う光源制御部と、を有する。
