STERILIZER TESTING SYSTEMS

A sterilant challenge device (50), for use in testing the efficiency of the air removal stage of a sterilization cycle in a sterilizer, includes a tube (2) of thermally-insulating material, the bore of which is closed at one end (52) and open at the other for the entry of sterilant. A plurality of t...

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Bibliographic Details
Main Authors BRIAN KIRK, ANTON KUEPPER
Format Patent
LanguageEnglish
Spanish
Published 30.08.1998
Edition6
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Summary:A sterilant challenge device (50), for use in testing the efficiency of the air removal stage of a sterilization cycle in a sterilizer, includes a tube (2) of thermally-insulating material, the bore of which is closed at one end (52) and open at the other for the entry of sterilant. A plurality of thermally-conductive masses (51) are located around the tube (2) and thermally-separated from one another by air gaps (59), and a temperature sensor is located in an opening (61) in one of the masses adjacent the closed end of the tube. An outer casing (25) defines an air space around the thermally-conductive masses and thermally insulates the masses from the heat in the sterilizer. When the challenge device is located in a sterilizer, the penetration of sterilant along the bore of the tube (2) during a sterilization cycle, is inhibited by the accumulation of air and/or non-condensable gas within the bore resulting from the condensation of moisture on the walls of the bore. By measuring the temperature in a thermally-conductive mass (51) adjacent the closed end of the tube (2), the presence of sterilant in the adjacent region of the bore of the tube can be detected. Un aparato de evaluacion del esterilizante (50), para usarse en la prueba de eficiencia en la etapa de eliminacion de aire de un ciclo de esterilizacion dentro de un esterilizador, incluye un tubo (29 de material térmicamente aislante, el orificio esta cerrado en un extremo (52) y abierto en el otro para la entrada de esterilizante. Una pluralidad de masas térmicamente conductivas (51) son colocadas alrededor del tubo (2) y térmicamente separadas una de otra por un espacio de aire (59), y está colocado un detector de temperatura en una entrada (61) en una de las masas adyacentes al extremo cerrado del tubo. Una cubierta exterior (25) define un espacio de aire alrededor de las masas térmicamente conductivas y térmicamente aisladas las masas del calor dentro del esterilizador. Cuando la cámara de evaluacion se coloca en un esterilizador, la penetracion de esterilizante a lo largo del orificio del tubo (2) durante un ciclo de esterilizacion, se inhibe por la acumulacion de aire y/o gas no condensable dentro del orificio que resulta de la condensacion de humedad sobre las paredes del orificio. Al medir la temperatura dentro de una masa térmicamente conductiva (51) adyacente al extremo cerrado del tubo (2), puede detectarse la presencia de esterilizante en la region adyacente del orificio del tubo.
Bibliography:Application Number: MX19980002061