Abstract: A hose clamp for medical application comprises a bracket-shaped clamping body having bracket ends arrestable with one another to form a closed ring, and provided with openings for a hose which passes through a throughgoing passage extending in a bracket plane. The clamp body has bracket legs. Inwardly directed wedge-shaped clamping jaws are provided on the bracket legs. Side walls are located in both sides of the throughgoing passage parallel to the bracket plane so as to prevent bending out of a hose from the bracket plane.

Abstract: A shut-off valve for a fluid flow or an infusion instrument is described. A sleeve-form casing (2) with a lateral opening (4) between its ends is provided. An elastic tube piece (7) lies within casing (2) to allow fluid flow therethrough. A pressure body (14) is movable radially within the lateral opening (4) to selectively compress or not compress the tube piece (7) so as to occlude or open fluid flow through the tube piece (7). For simplification of manufacture and for quick operation of such a shut-off valve, especially without painful or injurious activities in operation, a tubular guide sleeve (8) is provided and surrounds the lateral opening (4) of the casing. Sleeve (8) is arranged to laterally project from the casing (2) and includes at least one pair of blocking stops (10, 10', 11 11'). The pressure body (14) has a plug shape. On the end of the pressure body (14), facing away from the tube piece (7), there is fastened a cap (16) with an elastic mantle (12) and snap ring (18) depending from the cap.