A medical device capable of improving operativity and safety when a body surface part and an internal tissue are put in a suture is provided. The medical device used to put a body surface part and an internal tissue in a suture, includes amainbody (2) , a suture insertionneedle (3) which is supported by the main body (2) , and into which the suture can be inserted, and a suture grasping needle (4) which is provided to be proximate to the suture insertion needle (3), and into which a suture traction tool can be inserted. The suture insertion needle (3) and the suture grasping needle (4) are detachably attached to the main body (2) by an attachment and detachment unit.
