Problem to be solved: to provide a coupler for a blood purification device which is excellent in operability, good sealing property, and easy to clean up, and is easy to assemble and disassemble with a simple structure.Solution: there is a contact part of a hollow cylindrical shape having an inner surface of the contact liquid contacting with the dialysate and a sliding part for sliding to the contact part when it is separated or connected to the mating member, and is connected to the blood purifier during hemodialysis, and is connected in communication with each other when cleaning the contact part A coupler for a blood purification device, in which a sleeve portion of a cylindrical shell shape is interposed between the slide portion and the contact portion.Diagram【課題】操作性が良好で、シール性も良く、清浄性の確保も容易で、簡素な構造で組立や分解が容易である血液浄化器用カプラを提供する。【解決手段】透析液が接する接液面を内周側に有する中空円筒形状の接液部と、相手部材と分離または連結されるときに接液部に対しスライドするスライド部を備え、血液透析時には血液浄化器に接続され、接液部の洗浄時には互いに連通状態で連結される一対のカプラであって、スライド部と接液部の間に円筒殻形状のスリーブ部が介装されている血液浄化器用カプラ。【選択図】図1
