There is provided a medical device which has favorable operation wire, operability and has a sufficiently reinforced structure around the operation wire. The medical device includes a medical device body； a sub-lumen which is disposed inside the medical device body so as to extend along a longitudinal direction of the medical device body； an operation wire which is inserted into the sub-lumen and extends along the longitudinal direction of the medical device body； and a first tubular reinforcing layer and a second tubular reinforcing layer. The second reinforcing layer is disposed apart from the first reinforcing layer so as to surround the periphery of the first reinforcing layer, and the space between the first reinforcing layer and the second reinforcing layer is filled with a part of a resin constituting the medical device body. The sub-lumen is disposed inside the part of the resin constituting the medical device body.
