| 摘要 |
PROBLEM TO BE SOLVED: To provide a lid and a retractor having the same, capable of securing a wide movable area of a treatment instrument and allowing the treatment instrument to be easily operated.SOLUTION: A lid includes: a top plate with at least one opening; and a frame member formed in the periphery of the top plate to be engaged with an end of a retractor body. The opening is located on the inner side of the end of the retractor body when the lid is attached to the retractor body. A retractor has the lid detachably attached to the tubular retractor body. As the distance from a fulcrum of a treatment instrument to the distal end of the retractor body is short, the treatment instrument in the inclined state can be inserted, and therefore, a wide movable area of the treatment instrument can be secured. Further, as the distance from the fulcrum of the treatment instrument to a treated region is also short, the treatment instrument can be easily operated. |
