The tip of the outer cannula follows behind the tip of the inner cannula.

The end cap further has a second connecting structure connecting the capsule to the end cap.

A cap (24) is threadably engaged on the nozzle and includes a piercer (30) for penetrating a nozzle upon rotation of a cap on the nozzle.

The skirt is an extension of the metal of the lower end fitting that extends around the perimeter of the lower end fitting, spanning all four corners of the lower end fitting.

A non-contacting region 13 in which the pin and the box do not contact each other is present between the sealing surfaces and the shoulder surfaces of the pin and the box.

The shoulder surface of the pin is located on the end surface of the pin.

An elongate spring (266) is disposed about the stem of the inner hub and is deflected to provide a bias between the inner hub and the outer hub.

A connection mechanism may connect the end cap and the body for the end cap to pivot to adjust an angular position of the end cap relative to the body.

According to the invention, the cylinder comprises a centering connecting piece that is connected to the pipe connector, the pipe connector being connected to the centering connecting piece by a form-fit connection.

The end piece is a flexible end piece.

The power transmission device is provided with the plug, the socket and a sleeve, and a ball is fitted in a through hole of the socket.

The nozzle-fitting portion is shaped to wrap around the outer portion of the nozzle where it is bonded to the nozzle in a fluid-tight manner.

The socket (8) is connected to the spigot (6) by one or more bracing members (14) that extend in a direction from the first side towards the second side between the spigot (6) and the socket (8).

The socket (4) is provided with a locking piece (33) and the plug is provided with an engaging groove (12b) into which the locking piece (33) enters when the plug is inserted into the socket.

The catheter hub is disposed adjacent the needle hub in an elastomeric housing.