Patent ID: 7744544

Claim:
A medical manually-operated punch-type cutting tool comprising: a) a housing with a non-circular cross section; b) a handle rotatably connected to the housing; and c) an endless, flexible blade engaged with the housing opposite the handle and conformable to the cross-sectional shape of the housing configured to punch a non-circular cut as defined by the cross-sectional shape of the housing, the blade operably connected to the handle for rotation therewith, wherein as the blade is rotated by rotating the handle with respect to the housing, the blade is continuously in contact with and deflected by an interior surface of the housing to conform to the cross-sectional shape of the housing as a result of contact between the blade and the interior surface of the housing when in contact with a skin substrate to cut a non-circular opening within the skin substrate, the cut opening corresponding to the shape of the endless blade as it conforms to the cross-sectional shape of the housing.