A trocar system, having a trocar, a trocar sleeve, an optical channel extending coaxially in the trocar for receiving an optical unit, and a hollow transparent distal tip of the trocar, which can be observed from the interior by means of the optical unit, wherein a working channel extends continuously from the proximal end to the distal end in the trocar and opens into an outlet opening in the region of the distal end, and wherein the inner wall of the working channel is formed at least in an axially continuous sub-region of the circumference thereof by the trocar sleeve.
