PROBLEM TO BE SOLVED: To provide a blood vessel treatment device capable of preventing a blood vessel of a stenosis lesion region from being overheated, and performing a safe and appropriate blood vessel treatment.SOLUTION: In a heating step S1 for increasing the temperature of a balloon 7 inserted into a blood vessel to a target temperature (65°C), control means 4 compares an increase gradient TS1 of a temperature which is a predetermined reference with an increase gradient TSX of a temperature of a contrast medium 8 being currently heated. If there is a difference between them, the control means 4 decreases or increases the output of a laser beam which is a heating source for the contrast medium 8 so that the difference becomes smaller (feedforward control). Then, after the temperature of the contrast medium 8 reaches the target temperature, the control means 4 controls the output of the laser beam so that the temperature falls within a predetermined range higher or lower than the target temperature (feedback control).SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】狭窄病変部位の血管が過熱されるのを防止し、安全で的確な血管治療を行うことができる血管治療装置を提供する。【解決手段】血管内に挿入したバルーン7を目標温度(65℃)まで上昇させる加熱工程S1において、制御手段4は、予め定めた基準となる温度の上昇勾配TS1と、現在、加熱中の造影剤8の温度の上昇勾配TSXとを比較する。それらにずれがある場合には、制御手段4は、上記ずれが小さくなるように造影剤8の加熱源であるレーザ光の出力を低下或いは上昇させる(フィードフォワード制御)。次に、造影剤8が目標温度に達した後は、制御手段4は、目標温度の上下所定範囲内の温度に収まるようにレーザ光の出力を制御する(フィードバック制御)。【選択図】図3
