由两个蝴蝶翅膀形底板、一个带弹簧书夹子、一个卡棍箅子、两个卡簧和两根活动卡棍组成。
The utility model comprises two butterfly wing-shaped base boards, a book clamp with a spring, a clamp rod grate, two clamp springs and two motion clamp rods.
软垫呈大扁平形，软塑料制作，上有夹子可避免从病人床上掉落，产品具有抗氧性，有多种颜色和长度。
It has a large circular shape, soft vinyl pad design with gripping feet that prevents it from slipping from the patients bed. The product is oxygen safe and available in various colors and lengths.
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