| 摘要 |
A safety knife for ophthalmic surgical procedures has handle to which a blade holder is attached at one end, holding a pre-installed surgical blade. A blade guard is extended and retracted responsive to the movement of an actuator button on the handle. The blade assumes a curved shape as it is extended, to shape itself about and protect the blade. When the guard is retracted it straightens to allow it to slide into the handle, exposing the blade for use.
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