Tube for the enteral feeding of a patient

A tube unit for the enteral feeding of a patient, the tube unit including a tube segment that extends along at least a segment of the tube unit and along an axial direction (S), the tube segment having a proximal end and a distal end, and

• a retention device disposed on the distal end of the tube segment, the retention device including:
• a retention device body including a first end attached to the distal end of the tube segment and a second end, and
• a control device attached to the second end of the retention device body, the control device including a first opening,
• wherein the retention device body extends in at least one direction radially to the axial direction (S) beyond the distal end of the tube segment when the retention device is in an extended position and which has a smaller diameter when the retention device is in an elongated position, in which the retention device body is elongated along the axial direction (S), where the movement of the retention device from the extended position into the elongated position is supported by the control device,
• wherein the tube segment includes an interior tube and an exterior tube surrounding the interior tube, the interior tube having a proximal end and a distal end, the distal end of the interior tube extending through the retention device body and being attached to the control device such that fluid can pass through a second opening at the distal end of the interior tube and out of the tube unit via the first opening of the control device, the interior tube being elastically deformable in a direction along the axial direction (S) such that the control device is movable relative to the exterior tube along the axial direction (S) to move the retention device from the extended position to the elongated position.