Embodiments of the present invention relate to the operation of a medical handpiece and a medical handpiece, which are surgical instruments, and as the blade housing moves in the opposite direction of the blade, the blade fixing part, which fixes the blade by applying pressure from both sides of the blade, It surrounds at least a portion of the top, and the blade fixing portion is translated in the direction of the blade and in the opposite direction of the blade, and at least a portion of the outer surface surrounds at least a portion of the camshaft and handpiece housing with a screw thread used to couple the blade housing. , A knob that includes at least one protrusion on the outer side and receives force from the spring in the direction opposite to the blade by contacting one side of the spring, and a threaded line is formed inside one side of the spring, and when rotating in a clockwise direction, by screwing It moves in the opposite direction of the blade and is combined with the camshaft. As it moves in the opposite direction of the blade, the blade fixing part exerts a force on both sides of the blade. It contacts the other side of the spring and receives the force from the spring in the direction of the blade, and the other side has a fixing groove. Includes a stopping part that surrounds at least a part of the blade housing to be formed and the handpiece housing, and blocks the knob so that when the protrusion of the knob is separated from the fixing groove of the blade housing, the knob moves only to a specific point in the direction opposite the blade by a spring can do.본 발명의 실시예들은 외과적 시술기구인 의료용 핸드피스 및 의료용 핸드피스의 동작에 관한 것으로서, 칼날 하우징이 칼날 반대 방향으로 이동할수록 칼날의 양옆에서 압력을 가하여 칼날을 고정하는 칼날고정부, 칼날고정부의 적어도 일부분을 둘러싸고, 칼날고정부를 칼날 방향과 칼날 반대 방향으로 병진 운동 시키고, 바깥쪽 면의 적어도 일부에 칼날 하우징과 결합하는데 사용되는 나사선이 형성된 캠 샤프트, 핸드피스 하우징의 적어도 일부를 둘러싸고, 바깥쪽 면에 적어도 하나의 돌출부를 포함하고, 스프링의 일측과 접하여 스프링으로부터 칼날 반대 방향으로 힘을 받는 노브, 일측의 내부에 나사선이 형성되어, 시계방향으로 회전 운동을 하는 경우 나사 결합에 의하여 칼날 반대 방향으로 이동하여 캠 샤프트와 결합되고
