The instrument has an operating part (6) arranged at a proximal end of a shaft (2) and an instrument head (10) arranged at a distal end of the shaft, where the operating part is connected to the instrument head by the shaft. Multiple instrument channels are guided through the shaft, and an opening is formed on the instrument head. The instrument channels are operated obliquely and outwardly along a distal direction with respect to a central axis (A) of the instrument head in a section of the instrument channels that adjoin distal openings, where the openings are formed in the channels.
