Self-aspirating dental cartridge syringe for infiltration and block anaesthesia. For use with a 2.2ml anaesthetic cartridge. Manufactured in stainless steel to the highest engineering standards, offering the ultimate in balance, feel and tactile control of the injection. Automatic aspiration occurs with light pressure on the plunger, which pushes the cartridge onto a hub at the base of the syringe. The hub causes deformation of the diaphragm, and when the pressure is released from the plunger, the diaphragm's elastic recoil creates aspiration by a relative negative pressure in the cartridge. Self-aspiration without retraction minimises the risk of needle tip movement in the tissue.