| CPC A61F 9/00736 (2013.01) [A61F 9/0017 (2013.01); A61B 2017/00738 (2013.01); A61B 17/3211 (2013.01)] | 22 Claims |

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1. A surgical knife for expanding a boundary of an annular intracorneal channel, the surgical knife comprising:
a shaft section; and
an arcuate section coupled to the shaft section,
the arcuate section including a kidney-shaped appendage located at a proximal end of the arcuate section,
wherein the kidney-shaped appendage includes a top surface, a bottom surface, a convex cutting sidewall, and a concave non-cutting sidewall,
and
wherein the kidney-shaped appendage includes a cutting edge stretching along the convex cutting sidewall of the kidney-shaped appendage.
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