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 withdrawal device for the secure withdrawal of a puncture needle from a catheter, in particular from a catheter with a flexible catheter tube following the puncture. The device including a connection section for connecting the withdrawal device with the catheter in a starting position of use and a return-motion lever linearly movable in the guide element, whereby linear toothing is affixed to one of the elements, guide element and return-motion lever, which meshes with the peripheral toothing of a pivoted gearwheel on the other element (return-motion lever, guide element), and whereby the puncture needle is attached with the end protruding from the catheter such that upon rotation of the gearwheel, the puncture needle is wound up on a takeup part fixedly attached thereto.