Endodontic gutta percha placement tool with disposable gutta percha cartridge and a motor-driven plunger arrangement

摘要

An electrically heated endodontic syringe for injecting thermoplastic material, such as gutta percha, into a root canal cavity including a handpiece, control box, receiver for receiving a pre-filled cartridge of a thermoplastic material, tapered needle and a foot control peddle. The cartridge is made out of a high temperature plastic material and is indirectly heated by the control box, causing the thermoplastic material inside, preferably gutta percha, to become pliable. The handpiece includes a lead screw that, when activated, slides along the length of the hand piece and contacts a cartridge plunger at an open end of the cartridge, causing the thermoplastic material to travel along a central pathway, through the needle and into the cavity. The plunger is operated by a foot peddle.