| 摘要 |
PROBLEM TO BE SOLVED: To secure a wide operation field by fixing a base frame to a semicircular arc-shaped head part fixing frame, movably arranging a semicircular arc- shaped holding frame through a guide frame, and separately moving the base frame fixed to the head part fixing frame and the semicircular arc-shaped holding frame to hold a head part of a person to be operated. SOLUTION: A main body part 12 is arranged to slidably support a semicircular arc-shaped head part fixing frame 11, and a guide frame 13 is movably arranged in this head part fixing frame 11. A semicircular arc-shaped holding frame 14 is movably arranged in this guide frame 13, and plural head part fixing pins 15 are arranged at intervals in the circumferential direction in this holding frame 14 so that these pointed end parts 23 turn to the virtual center of a semicircular arc-shaped part 19. That is, a slide stand 16 and a guide part 17 are arranged in the guide frame 13, and are slidably supported on the head part fixing frame 11 by installing the slide stand 16 on an inside surface of the head part fixing frame 11. The holding frame 14 has a slide stand 18 and a semicircular arc-shaped part 19, but its slide stand 18 is installed in the guide part 17 of the guide frame 13. |
