Method and system for controllable adjustment of the removal rate of cutting edges of effectors of manually-guided material- and tissue-sectioning tools and a corresponding effector

A method for signal-based or position-based control of a removal rate of material-separating cutting edges of a manually-positioned or manually-guided material separating tool, the manually-positioned or manually-guided material separating tool including an effector and a shaft, the effector including the material-separating cutting edges and at least one cutting edge cover disposed on the material-separating cutting edges, the method comprising:

• controlling the removal rate of the material-separating cutting edges of the effector by:
• (a) mechanically adjusting at least two positions of at least one of the material-separating cutting edges or the at least one cutting edge cover disposed on the material-separating cutting edges in a radial direction relative to the shaft, the at least two positions including locations and orientations of the material-separating cutting edges or of the at least one cutting edge cover;
• or
• (b) retracting and deploying at least one of the material-separating cutting edges in the radial direction relative to the shaft;
• and
• maintaining or only insignificantly changing a rotation speed of the effector:
• (i) when the at least two positions of the at least one of the material-separating cutting edges or the at least one cutting edge cover are adjusted, or
• (ii) when the at least one of the material-separating cutting edges are retracted and deployed;
• the method further comprising least one of:
• maintaining a position and an orientation of the effector or changing the position and the orientation of the effector only in an order of a magnitude of a cutting length of the material-separating cutting edges when the material-separating cutting edges or the at least one cutting edge cover are mechanically adjusted, and
• maintaining a spatial extent of the effector or changing the spatial extend of the effector only in the order of the magnitude of the cutting length of the material-separating cutting edges or in an order of a magnitude of a length of the at least one cutting edge cover when the material-separating cutting edges or the at least one cutting edge cover are mechanically adjusted.