PROBLEM TO BE SOLVED: To provide a blood purification device in which failure of a liquid temperature adjustment for a supply liquid is difficult to occur.SOLUTION: A blood purification device comprises: a blood circuit 2 for extracorporeally circulating blood of a patient； a liquid supply circuit 4 for supplying a supply liquid to the blood circuit 2 or a blood purifier 3 provided on the blood circuit 2； and warming tools 65, 75 which are provided on the liquid supply circuit 4 for warming the supply liquid. The warming tools 65, 75 comprise: a heater 654 which is provided on a holding plane 651a being configured to hold a warming circuit 66 being a part of the liquid supply circuit 4 and for holding the warming circuit 66； a heater temperature detection part for detecting a temperature of the heater 654； and a liquid temperature detection temperature sensor 656 being provided at a position which is separated from the heater 654 on the holding plane 651a and contacts the warming circuit 66 on a downstream side of a liquid feeding direction of a warmed part warmed by the heater 654, and capable of detecting a temperature of the supply liquid flowing in the warming circuit 66.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2020,JPO&INPIT【課題】供給液の液温調整の不具合が発生しにくい血液浄化装置を提供する。【解決手段】患者の血液を体外循環させる血液回路２と、血液回路２、あるいは血液回路２に設けられた血液浄化器３に供給液を供給する液供給回路４と、液供給回路４に設けられ、供給液を加温する加温器６５，７５と、を備え、加温器６５，７５は、液供給回路４の一部である加温用回路６６を挟持するように構成されており、加温用回路６６を狭持する狭持面６５１ａに設けられたヒータ６５４と、ヒータ６５４の温度を検出可能なヒータ温度検出部と、狭持面６５１ａのヒータ６５４と離間した位置であって、かつ、加温用回路６６を狭持した際に、ヒータ６５４により加温される部分よりも送液方向下流側の加温用回路６６に当接する位置に設けられ、加温用回路６６を流れる供給液の温度を検出可能な液温検出用温度センサ６５６と、を有する。【選択図】図４
