Patent ID: 8496475

Claim:
A lighting system for a hand-held dental delivery device, comprising: a hand-piece of the hand-held dental delivery device, the hand-piece including a coil, wherein an alternating current flowing through the coil induces an alternating magnetic field; an insert insertably coupled to the hand-piece, the insert including: a tip configured for use in a dental procedure and coupled to a magnetic element, the magnetic element being one of a stack of metal plates or a rod responsive to the alternating magnetic field and disposed within the hand-piece; an electrical power storage device configured to generate electrical power independent of the alternating magnetic field; and a light source powered by the electrical power storage device and disposed so that light generated by the light source illuminates an area proximate to the tip; and a switch including a magnetic field sensor and a transistor, wherein: at a resonant frequency, the alternating magnetic field effects a movement of the magnetic element, the movement of the magnetic element is transferred to the tip, and a detection of the alternating magnetic field by the magnetic field sensor activates the transistor to form a completion of an electrical connection between the electrical power storage device and the light source, thereby causing the light source to illuminate.