| 摘要 |
PROBLEM TO BE SOLVED: To prevent free coming/going of people at the front room of an operating room. SOLUTION: A pair or plural pairs of posts 7 are arranged along the direction at right angles to the flow of air in the front room of an operating room. Feed screws are longitudinally arranged to the insides of the posts. The lower part between each pair of posts is cut off with ashield wall 9. A passing door 10 for patients is set in the upper part between each pair of posts. Nuts are screwed in the feed screws in each pair of posts, and a fence member 12 is laid between the nuts. The fence member is raised and lowered along the posts by turning and driving of the feed screws to open or close the passage door. |
