| 摘要 |
The invention relates to a trepan (1) for making a conical cut in the cornea (1a), in which the blade (6) is made from a flexible metal plate and is in the shape of a truncated cone sector arranged in a frustoconical space (33) delimited by an inner frustoconical wall (22) fixed in rotation and resting on the eye, and an outer frustoconical wall (23) movable in rotation. The cutting edge (35) of the blade (6) is formed by the base of this truncated cone sector. The blade (6) is displaceable along the generatrices of these frustoconical walls (22, 23). <IMAGE>
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