American Sterilizer Company

Steris Inc.

Michael Geanous

Richard G Confer

Iain McVey

Gerald E McDonnell

Richard C Bainbridge

A BIER vessel evaluates biological indicators for sterilization processes. By flowing gaseous sterilant, such as vaporized hydrogen peroxide, through a chamber () before, during, and after introducing the indicators, the indicators are instantaneously exposed to preselected steady state conditions, allowing accurate and reproducible evaluation of the indicator response. A door () to an opening () in the chamber opens for introducing the indicators to the chamber without appreciably disturbing the steady state conditions therein. After a preselected time, the biological indicators are removed and evaluated for remaining biological activity.

Vapor phase decontamination process biological indicator evaluator resistomer (BIER) vessel

The preferred embodiment of the present invention provides a control system which permits operation of electrically powered apparatus in any one of several active modes from a controller mounted remotely from the apparatus. The system is particularly useful for controlling the operation of at least a pair of light sources. The system permits switching, from the controller, energizing power from an energized light source to a de-energized light source. Electrical communication between the controller of the system and the light head can be provided by only two electrical conductors.

System for controlling the operation of electrically powered apparatus

A preferred control circuit is adapted particularly for use in a system that controls the operation of at least a pair of light sources. The system permits switching, at a controller remote from the light head which contains the light sources, energizing power from an energized light source to a de-energized light source. The circuit monitors the integrity of the energized light source and switches energizing power from the energized light source to the de-energized light source when the energized light source fails. The circuit monitors the integrity of the de-energized light source and energizes a failed filament indicator when the de-energized light source fails.

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Erie, PA, United States of America

Michael Geanous