American Sterilizer Company

Steris Inc.

Terry A Drabinski

James Allyn Petrucci

Yury Keselman

David Jesurun

Steven H Rus

David A Hite

Sheari A Rice

Alan J Greszler

Allan J Greszler

A lighting control system suitable for a surgical lighting device. The lighting control system includes circuitry that compensates for the effects of temperature changes in a lighting device, and that compensates for forward voltage variations among LED lighting modules to provide substantially uniform light output.

Lighting control system having a trim circuit

Lighting control system having temperature compensation and trim circuits

A surgical light system () includes a lighthead () coupled to a suspension arm (') adapted for mounting to a surface () of a surgical room. A bulb () is disposed in the lighthead. A processor () in the lighthead is operatively coupled with the bulb for controlling an intensity of light of the bulb and is adapted to generate a lighthead status signal representative of a first status of the lighthead. A control apparatus () is in operative communication with the processor () in the lighthead. The control apparatus receives the lighthead status signal and selects a set of control algorithms from among a group of algorithms based on the lighthead status signal for controlling the lighthead. The lighthead status signal includes information regarding a size of the lighthead, an intensity of light from the bulb, a condition of the bulb, a level of current applied to the bulb, a level of current applied to the bulb, a level of voltage applied to the bulb, an internal temperature of the lighthead, and the presence of one or more of a video camera, a surgical task light, and a controllable ambient light. A human-readable display device () is provided for displaying information relating to the lighthead status signal. Several levels of redundancy are provided in the control system to minimize the potential loss of control due to failures. In that regard, the lightheads are operable when the control apparatus () fails.

Surgical lighting control and video system

A lighting system () suited to use in an operating theater includes one or more lightheads, each having a housing () and a bezel () extending therefrom. A light source () is disposed within the housing. A handle () extends below the bezel and is rotatable relative thereto. A lighting control input means (), associated with the bezel allows adjustment of the intensity of light emitted by the light source. A sterile cover () can be placed over both the handle and the bevel, allowing the input means to be manipulated by pressure on the cover with the thumb of the operator's hand, while simultaneously grasping the handle in the palm and fingers.

Ergonomic controls in a surgical lighting system

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Stow, OH, United States of America

Terry A Drabinski