Abstract: An infusion set includes a tube and a roller clamp for regulating a flow of fluid through the tube. The roller clamp includes a housing that has side walls and a crosspiece connecting the side walls and on which the tube rests. A wheel is supported on running surfaces in or on the side walls so as to be rotatable and displaceable in the longitudinal direction of the housing. The running surfaces face the crosspiece. The lengths of the running surfaces extend in the longitudinal direction of the housing, and the widths of the running surfaces extend in the transverse direction of the housing. Movement of the wheel along the running surfaces alters a cross-section of the tube. The running surfaces each form a substantially punctiform support or contact point with the wheel, on an inner portion of the running surfaces, particularly an inner portion facing the wheel.

Abstract: A drip chamber insert for insertion into a drip chamber to be connected to a medical infusion or transfusion device. The drip chamber insert has an open first front side, discharge openings in a second front side opposite the first front side, and an overflow opening. The overflow opening is positioned in a region extending from the first to the second front side. The drip chamber features a drip chamber bottom with an outlet channel. The drip chamber insert is positioned in the drip chamber with the second front side facing the drip chamber bottom. The drip chamber insert or the drip chamber is usable for preparing operation of a medical infusion or transfusion device without shutting off and reopening a connection to the drip chamber and/or without external pressurization of the interior of the drip chamber.