A medical device includes an insertion portion capable of being inserted into a body, and a driving mechanism coupled to the insertion portion, wherein the insertion portion includes a treatment portion configured to perform a treatment on a treatment target portion, a joint portion capable of supporting the treatment portion and changing a direction of the treatment portion, a storage portion provided in the joint portion and capable of internally storing the treatment portion, and a driving force transmission portion connected to the joint portion and configured to transmit a driving force for changing the direction of the treatment portion to the joint portion, wherein the driving mechanism includes a driving force generation portion configured to generate the driving force connected to the driving force transmission portion, and wherein the treatment portion enters and exits the storage portion through the driving force transmitted to the joint portion through the driving force transmission portion by the driving force generation portion.
