Endoscopic instrument system

An endoscopic instrument system, comprising:

• a flexible endoscope with an endoscope handle and an elongate endoscope shaft introducible into a hollow space in a body, the endoscope shaft having an instrument channel extending therethrough, and a bendable first section and a bendable second section each exhibiting a respective minimal bending radius, the minimal bending radius of the first section being smaller than the minimal bending radius of the second section, the first section being a steerable distal end section of the endoscope shaft;
• an endoscopic instrument with a handle;
• an elongate instrument shaft having a continuous flexible tube, the flexible tube having a bendable first section and a bendable second section, each exhibiting a respective minimal bending radius, the minimal bending radius of the first section being smaller than the minimal bending radius of the second section;
• and
• a tool actuatable by a push and/or pull element arranged within the instrument shaft, the push and/or pull element connected to the handle and to the tool;
• wherein the endoscopic instrument is configured to be introduced into the instrument channel for conducting manipulations in the hollow space in the body, such that the first section and the second section of the flexible tube are located at least partially within the instrument channel;
• wherein the flexible tube of the instrument shaft is connected, such that it is rotationally fixed, to the handle and to the tool with respect to a longitudinal direction of the flexible tube, such that rotation of the handle rotates the tool with respect to a longitudinal axis of the flexible tube;
• the minimal bending radius of the first section of the flexible tube is correlated to the minimal bending radius of the first section of the endoscope shaft, and the minimal bending radius of the second section of the flexible tube is correlated to the minimal bending radius of the second section of the endoscope shaft.