Patent ID: 8900138

Claim:
A rechargeable portable headlight assembly for illuminating a surgical site for viewing by a practitioner, the portable headlight assembly for movement by or with the practitioner, the portable headlight connectable to a charger when connected to line power for recharging and the portable headlight assembly operative only in a state wherein the light energy is directed toward the surgical site comprising: a headlight source including a headlight lamp, a reflector with a headlight lamp end and an open end to reflect and focus an illumination and for directing and delivering radiant energy towards the surgical site, the headlight lamp and reflector mounted along an axis for supplying illumination between 5000 and 6700 degrees Kelvin; a housing to enclose and surround the headlight source for safe handling and support for movement with the practitioner, the housing including vent grills in and out thereof; a fan positioned coaxially along the axis within the housing in convective communication for supplying cooling air flow against, about, around and over the reflector and through the headlight source, the fan located in the housing for drawing ambient cooling air through the vent grills into and out of the housing; a heat sink mounting and supporting the headlight source along the axis within the housing about the fan and the reflector to guide air flow during a convective communication there through; a portable power supply coupled to the headlight source when the light energy is directed towards the surgical site, the portable power supply rechargeable when connected to the charger; temperature responsive sensors to monitor temperatures of the headlight source and portable power supply; and a control for monitoring the operation of the headlight source and the portable power supply, the control reactive to the temperatures of the headlight source and the portable power supply to activate and deactivate the coupling there between, the control responsive to a level of energy in the portable power supply and electromagnetic radiation at least when supplying illumination of the surgical site.