PROBLEM TO BE SOLVED: To provide medical equipment having favorable operability.SOLUTION: A catheter 100 includes: a tubular body formed with a main lumen 20 and a sub lumen 80 arranged in a periphery of the main lumen and extended in a longitudinal direction of the main lumen and an operation wire 70 arranged in the sub lumen and including a distal end fixed on a distal end of the tubular body. The operation wire has a circular cross section orthogonal to the longitudinal direction or is a stranded wire constituted by plural thin wires having a circular cross section orthogonal to the longitudinal direction. A cross sectional shape of the sub lumen orthogonal to the longitudinal direction is a flat shape flat in a circumferential direction of the main lumen.SELECTED DRAWING: Figure 2
