Abstract: A syringe 1 comprises a barrel 2 and a plunger 3 sliding in the barrel and having a seal 8 in sealing engagement with an internal surface of the barrel, the barrel having a piercing member 20 with a piercing point 27 and an aperture 26 at its distal end. The aperture 26 is in communication with the distal end of the barrel, and the distal end of the barrel has a connection member 28 to which an adapter member 36 provided with an intradermal needle 39 is adapted to be attached. An intradermal injection adapter 36 for a syringe is also provided, the adapter comprising a body 37 having an intradermal needle 39 at a distal end, and a proximal end constructed and arranged for attachment to the barrel, the body also providing a fluid connection between the barrel 2 and the intradermal needle 39.

Abstract: A catheter or cannula arrangement includes a catheter or cannula and a security unit for monitoring a length of stay of the catheter or cannula in a body. The security unit includes a signaling unit, an activation unit, and a timer unit. The signaling unit emits a first signal. The activation detection unit detects a first event and produces a second signal indicative of the first event detection. The timer unit receives the second signal and starts a time duration measurement in reaction thereto, and produces and transmits to the signaling unit a third signal as soon as the measured time duration is reaches a preset time value. The signaling unit emits the first signal in reaction to receiving the third signal. The first event can be an at least partial extraction of a needle from the catheter or cannula.