| 摘要 |
Apparatus and methods for determining or verifying the depth of cut of a micrometer surgical knife include placing the knife within the viewing field of a video microscope to produce an image on a video monitor, generating cursor lines on the monitor, spacing the cursor lines apart by a distance which, when calibrated to the actual dimensions of the knife, represents the actual, linear cutting depth, zeroing the knife by moving it until the footplate of the knife is aligned with one cursor line and moving the knife blade to extend past the footplate to the second cursor line. Alternatively, the footplate is aligned with the first cursor line and the second cursor line is aligned with the blade tip, and the resulting distance between the first and second cursor lines is correlated to an actual, linear dimension.
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