surgical bar with a blade groove both of the helix angle and the rake angle has a rake face to change

摘要

Feature to minimize substantially that the same force is applied to the processing organization part is a bar (30) having a. These features may vary blade helix angle is formed to be a groove (42-56), the rake face (62) of the blade grooves rake angle is formed that varies along its length, the bar of the elliptical cross-sectional shape The formed cross-cut to bring the head (70), the distal end groove (82) which are arranged asymmetrically, and / or to include a tip (34) having a non-constant profile over the entire circumference of the bar head there.