| 摘要 |
A surgical tool includes a longitudinal member; a bending double joint that is coupled to the longitudinal member; forceps pieces that are coupled to the bending double joint; an opening and closing joint that is coupled to the forceps pieces; and an opening and closing rod that is coupled to the opening and closing joint. The bending double joint has a first bending rotary shaft that is coupled to the longitudinal member; and a second bending rotary shaft that is parallel to the first bending rotary shaft and is coupled to a treatment part. The opening and closing joint has a first gear that is coupled to the opening and closing rod and is rotated around a predetermined rotation center; a second gear that is coupled to the first gear so as to relatively rotate in a direction opposite to the first gear coaxially with the second bending rotary shaft; and a link that converts a rotational force of the second gear into the operation of the forceps pieces. |
