| 主权项 |
1. A medical dilator comprising:
a keeper section inserted in an opening part of a subject, and configured to dilate the opening part and to keep a dilated state of the opening part; and an auxiliary member including an insertion section configured to be insertable in the opening part and a support section which is disposed on the insertion section, thereby being inserted into the opening part together with the insertion section, and disposed to cross a direction of insertion of a treatment instrument into the opening part, the support section being configured to support the treatment instrument which is inserted in the opening part, disposed in the keeper section, and configured to assist a treatment operation of the treatment instrument which is configured to treat the opening part and a lumen communicating with the opening part, wherein the insertion section includes a pair of rod-shaped arm portions extending in the direction of insertion, the pair of arm portions are juxtaposed in a width direction of the keeper section, and each of the pair of arm portions includes: an insertion point which is inserted in the opening part; and a position/fixing part which is disposed in an outside of the opening part and is positioned and fixed relative to the keeper section. |
