| 摘要 |
PROBLEM TO BE SOLVED: To provide a blockage detection device and a transfusion device in which a portion for positioning a tube to be detected with blockage is hardly contaminated and can be easily cleaned, and a blockage detection component can be downsized.SOLUTION: A blockage detection device of a tube T on the upstream and downstream sides of a pump mechanism for feeding a fluid by elastically deforming the tube T comprises: an elastic body 1 in which a positioning surface of the tube T is flat; a pressure sensor 2 for outputting a signal in accordance with the deformation, in which a sensor surface 2a faces the rear surface of the elastic body with a gap &Dgr;g; and a tubular body presser 3 for bringing the tube T positioned on the elastic body flat surface into close contact with the elastic body front surface with predetermined pressing force in a blockage detection state of the tube T, and transmitting an internal pressure change of the tube T to the sensor surface 2a of the pressure sensor 2 through the elastic body 1. The tube positioning surface is formed in a flat surface, thereby facilitating cleaning and downsizing a configuration.SELECTED DRAWING: Figure 1 |
