Patent ID: 7892209

Claim:
An arrangement comprising an instillation catheter and a connector piece for attachment to a tracheal or endotracheal tube, the connector piece having a distal end for attachment to the tube, and a proximal end for attachment to a ventilation and/or suction device, and comprising a branch which serves for insertion of the catheter and in which a valve is arranged, the valve having a proximal through-opening and being made of an elastically deformable material configured to be opened by insertion of the catheter, characterized in that the inner wall of the proximal through-opening has a seal arranged in a circumferential direction on the inner wall preventing axial flow of fluid between catheter and inner wall, and in that, in the distal direction from the through-opening, the valve has a beak section which, at its beak tip, has a normally closed slit, wherein the seal exerts, on the outer wall of the catheter, a pressure which permits gas-tight and water-tight enclosure.