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皮牵引是骨科的一种常用技术。在使用中常常会出现这样的问题:牵引时间长时,胶布会自行脱落,使两侧胶布长度不等,导致牵引力量不等。有人采用带有卡子孔皮带的分开板,来调节两侧胶布的长度,使其两侧的牵引力相等。该法虽解决了胶布不等长的问题,但有一个缺点:使用时需要调整。本文介绍一种更为方便、合理的牵引方法。根据定滑轮两侧绳索受力均等的原理,用一个圆筒(1)来代替方块形的分开板,这样,在整个牵引过程中,两侧胶布(2)(3)的牵引力始终相等,无需调整。圆筒可用铁皮或圆木制作。
Skin traction is a common orthopedic technique. In the use of such problems often occur: traction for a long time, the tape will fall off on their own, so that both sides of the tape length varies, resulting in varying amounts of traction. Someone uses a separate plate with a snap-hole belt to adjust the length of the tape on both sides so that the traction on both sides is equal. Although the law has solved the problem of tape length, but there is a disadvantage: need to be adjusted when in use. This article describes a more convenient and reasonable traction method. According to the principle that the ropes are equalized on both sides of the fixed pulley, a cylinder (1) is used to replace the square-shaped dividing plate so that the pulling force of the blankets (2) (3) on both sides is always the same throughout the pulling process, Adjustment. Cylinder can be made of metal or round wood.