Flexible-agitator system

(57) A summary and solution means The revolving free stirrer system for removing an obstacle from the inside of a patient's blood vessel is arranged in the tubular housing which has the suction port connected with the proximity end, and a tubular housing, and consists of a motor drive type free churning object shaft which has an end churning object. From the end in which the housing carried out the opening, the end churning object was projected and is extended. The end churning object is suitable for destroying an intravascular obstacle to a bit, and a bit can be drawn near in a housing by suction with this. The frictional force which acts in the length direction between a bit, a revolving free churning object shaft, and a tubular housing is reduced by the relative motion between a free churning object and a free pipe. When a bit passes through the inside of a tubular housing, a bit is destroyed still smaller by the relative motion between a revolving free churning object shaft and a tubular housing.