Fluid-tight hose connection

A fluid-tight hose connection for a surgical instrument comprising:

• a hose having an inner hose and an outer protective hose surrounding the inner hose, wherein the inner hose has a coiled hose portion at an end portion of the hose;
• a sleeve having a first wedge-shape in a longitudinal section, the sleeve being arranged between the coiled hose portion of the inner hose and the outer protective hose;
• a sealing body surrounding the protective hose and arranged on an outside of the protective hose at a longitudinal position of the hose corresponding to the sleeve;
• a connector body having an internal surface forming an interspace with an outer circumferential surface of the sealing body;
• and
• a nut;
• wherein the sealing body having a second wedge-shape in the longitudinal section;
• the outer circumferential surface of the sealing body having at least one peripheral rib extending circumferentially around the outer circumferential surface;
• the at least one peripheral rib has a curved outer surface protruding outwardly in a radial direction from the outer circumferential surface of the sealing body to contact the internal surface of the connector body;
• and
• the nut is threadingly engaged with an outer surface of the connector body to maintain contact of the curved outer surface of the at least one peripheral rib with the internal surface of the connector body.