| 摘要 |
<p>A corneal vacuum trephine system (10) including a suction ring (12) having an annular suction ring surface configured to define a suction annular space (18) positionable against the eye (20). A vacuum device (30) creates a vacuum in the suction annular space (18) to secure the suction ring (12) to the eye (20) over the cornea (24). A trephine (16) having a cutting edge (66) is positionable so as to be movable relative to the suction ring (12) for making with its cutting edge (66) a circular cut in the cornea (24). A trephine guide (14) is positionable on the suction ring (12) for subsequently guiding the trephine (16) therethrough relative to the cornea (24). The guide (14) permits the trephine (16) to be separated from the suction ring (12) after cutting the cornea (24) so that the cut can be examined and the trephine (16) repositioned precisely in the same place and orientation in the incomplete cornea cut to deepen the cut.</p> |
