PROBLEM TO BE SOLVED: To provide a squeezing type pump that can automatically determine whether a gap dimension between an inner peripheral wall surface of a fitting concave part and a squeezing part is appropriate or not.SOLUTION: A squeezing type pump comprises: a fitting concave part 8a to which a squeezed tube 1a connected to an artery side blood circuit 1 can be fitted and a roller 10 that allows an internal fluid to flow in the artery side blood circuit 1 by longitudinally squeezing the squeezed tube 1a fitted to the fitting concave part 8a while radially compressing it. The squeezing type pump also comprises: a load sensor 18 that can detect a radial displacement of the squeezed tube 1a fitted to the fitting concave part 8a and gap determination means 21 that can determine whether a gap dimension between an inner peripheral wall surface of the fitting concave part 8a and the roller 10 is appropriate or not on the basis of the displacement detected by the load sensor 18.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】取付凹部の内周壁面としごき部との間の隙間寸法が適切であるか否かを自動的に判定することができるしごき型ポンプを提供する。【解決手段】動脈側血液回路1に接続された被しごきチューブ1aを取り付け可能な取付凹部8aと、取付凹部8aに取り付けられた被しごきチューブ1aを径方向に圧縮しつつ長手方向にしごくことで内部の液体を動脈側血液回路1にて流動させ得るローラ10とを具備したしごき型ポンプにおいて、取付凹部8aに取り付けられた被しごきチューブ1aの径方向の変位を検出し得る荷重センサ18と、該荷重センサ18で検出された変位に基づき、取付凹部8aの内周壁面とローラ10との間の隙間寸法の適否を判定し得る隙間判定手段21とを備えたものである。【選択図】図1
