(under subclass 79) Subject matter wherein a portion of a bone or associated cartilage is removed by a sharpened blade, chisel or a means having tooth-like projections which wear the bone or cartilage dawn by friction.
(1) Note. The devices of this subclass include cutting blades on a handle, chisels or osteotomes and abraders which are either manually moved in a push-pull fashion, or by a motor drive means, or by having the head of the handle impacted by a hammer-like device.
