Closure system for introducing and/or discharging odoriferous substances into and out of body of patient in odorous manner as much as possible

The invention relates to a closed catheter-like system for the temporary or continuous retention in a patient for introducing and/or discharging odorous substances, in which the release of odorous substances is reduced as much as possible by means of a multi-layer structure of a proportionally integrated barrier material of the system wall, the gaseous portion generated in the body and discharged into the system is decompressed while ensuring odor neutralization. The system comprises, in particular, a hose film-like structure connecting an in-vivo space to be reached with an in-vitro container for accommodating a specific substance to be introduced and/or discharged. The hose structure is provided with an indwelling and/or sealed balloon element at a distal end positioned within the body, securing the system within the body. All film-based extracorporeal components of the system, including introduced and/or discharged film-like structures and containers preferably in the form of bags, are integrated with at l