| 摘要 |
A corneal punch comprising a base unit (1, 21, 41) having a first annular mating surface (5, 25, 45) surrounding a well (13, 33, 53) in which a donor cornea may be located, and a separate guide unit (2, 22, 42) including an inner annular guide shaft (6, 26, 46) and an outer locating ring (7, 27, 47) connected to the guide shaft (6, 26, 46) and having a second annular mating surface (10, 30, 50). The base unit (1, 21, 41) and the guide unit (2, 22, 42) may be releasably positioned in registration with each other by way of the first (5, 25, 45) and second (10, 30, 50) mating surfaces such that the guide shaft (6, 26, 46) is substantially coaxial with the well (13, 33, 53). <IMAGE>
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