Abstract: An instrument (10) that comprises a cartridge seat (24) for a knife cartridge (25). The knife cartridge (25) holds a knife (30), preferably in protected safe position in which the blade (32) of the knife (30) is reliably retained inside the housing (26) of the knife cartridge (25) during non-use, particularly if the knife cartridge (25) is not inserted in the sealing instrument (10). This concept leads to increased handling safety for the medical staff.

Abstract: The invention relates to a device for feeding a liquid into or removing a liquid from a receptacle, said device having a spike (1) and a housing (10, 20, 30) connected to the spike (1), wherein the spike (1) has a liquid channel (6) and a venting channel (7), and the housing (10, 20, 30) has a liquid filter chamber (24) connected to the liquid channel (6) and a venting filter chamber (11) connected to the venting channel (7). In order to achieve a larger filter surface while keeping the overall size of the structure to a minimum, the invention proposes that the liquid filter chamber (24) and the venting filter chamber (11) are arranged one above the other in the direction of a longitudinal axis (4) running along the spike (1).

Abstract: A clamp for receiving cylindrical objects, comprising a main body, which on two opposite sides has connecting elements that are matched to one another for detachably connecting similar clamps, and a receiving region, which is designed in a substantially ring segment shape and has a receiving opening for connecting a cylindrical object to the main body in a detachable locking manner, said opening extending over less than 180° of the receiving region, and the inside diameter (D) of the receiving region being 32 mm, 17 mm to 24 mm, or 10 mm.