Medical device and medical device set

A medical device set, the medical device set comprising:

• a balloon catheter having a balloon configured to be inflated and deflated by supplying or discharging a fluid;
• and
• a medical device including an elongated base shaft, and a distal end member provided on a distal end side of the base shaft, the distal end member including an extending portion that extends along a longitudinal direction of the base shaft, and a protecting portion that is provided on a distal end side relative to the extending portion and is formed in a spiral shape, the protecting portion including a space portion being provided inward in a radial direction of the spiral shape, the space being configured to at least partially accommodate the balloon of the balloon catheter, and a tapered portion on a distal end of the protecting portion, the tapered portion having an outer diameter which decreases toward the distal end side of the distal end member.