<；P>；PROBLEM TO BE SOLVED: To suppress a catheter from bending steeply while securing the flexibility of the catheter. <；P>；SOLUTION: The catheter includes a main lumen 20 disposed along the longitudinal direction of the catheter 10, and a sub lumen 30 formed in a diameter smaller than that of the main lumen 20 and disposed along the longitudinal direction of the catheter 10 around the main lumen 20. An operation wire 40 slidably inserted to the sub lumen 30 and fixed to the tip part (distal end part 15) of the catheter 10 is provided. A coil 50 comprising an elastic body is wound around the main lumen 20. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
