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1·Taking into account a very sharp knife, afraid to pass Scalpel in the process of accidental injury, Yang Suan requirements as far as possible all the surgical scissors.

考虑到手术刀很锋利，怕在传递手术刀的过程中有误伤，杨苏安要求尽量全部用剪刀进行手术。

2·Doctors are wearing a protective mask, two gloves, in order to avoid accidental injury when passing scalpels, surgical knives all replaced with scissors.

医生都戴了防护面具、两层手套，为避免传递手术刀时出现误伤，手术刀全换成了剪刀。