Connector for connecting a medical injection device to a container

A connector for connecting a medical injection device having a distal tip and a sleeve extending around the distal tip, the sleeve being provided with an inner threaded portion, to a container closed by a pierceable septum, the connector comprising:

• a proximal part configured to sealingly engage the distal tip of the injection device, the proximal part comprising an outer threaded portion configured to be removably screwed to the inner threaded portion of the sleeve;
• a distal part configured to be connected to the container;
• a hollow spike extending distally from the proximal part, having an internal volume configured to be in fluidic connection with the injection device, the hollow spike being configured to perforate the pierceable septum of the container when the distal part is connected to the container, the hollow spike comprising an opening in a distal end, the opening being configured to create a fluidic connection between the medical injection device and the container, wherein the distal part comprises a skirt extending around the hollow spike;
• and a sealing cap mounted on the hollow spike so as to sealingly enclose at least the opening of the hollow spike, wherein the sealing cap comprises a ring protruding radially outwardly from a hollow body, the ring being configured to abut the skirt when the sealing cap is mounted on the hollow spike so as to retain the sealing cap on the hollow spike.