Method and apparatus for reducing the degradation of heat...

A - Human Necessities – 61 – L

Patent

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A61L 2/04 (2006.01) A61J 1/00 (2006.01)

Patent

CA 2345098

A method and an apparatus (40) for reducing the degradation of heat sensitive components in medical substances during heat sterilisation are described. The medical substances are contained in a multiple chamber recipient (10, 60) that comprises a first chamber (12) with a first medical substance and at least one second chamber (14, 50) containing an amount of a second medical substance that is smaller than that of the first medical substance. The multiple chamber recipient (10, 60) is heated to a predetermined temperature for sterilising the medical substances, and the second chamber (14, 50) with the second medical substance is thermally insulated during heating of the multiple chamber recipient (10, 60). The multiple chamber recipient (10, 60) is held at this temperature for a predetermined time and is subsequently cooled. A predetermined time after commencing heating of the multiple chamber recipient (10, 60) the thermal insulation of the second chamber (14, 50) is removed, so that a defined hold time of the second chamber (14, 50) at the sterilisation temperature is obtained.

L'invention concerne un procédé et un appareil (40) permettant de réduire la dégradation des composantes thermosensibles contenues dans les substances médicales pendant la stérilisation thermique. Les substances médicales sont contenues dans un récipient à chambre multiple (10, 60) comprenant une première chambre (12) renfermant une première substance médicale et au moins une deuxième chambre (14, 50) renfermant une deuxième substance médicale en quantité inférieure à la celle de la première substance médicale. Le récipient à chambre multiple (10, 60) est chauffé à une température prédéterminée destinée à la stérilisation des substances médicales. Pendant ce temps, la deuxième chambre (14, 50) renfermant la deuxième substance médicale est thermiquement isolée. Le récipient à chambre multiple (10, 60) est maintenu à cette température pendant un temps prédéterminé puis il est refroidi. L'isolation thermique de la deuxième chambre (14, 50) est supprimée au bout d'un temps prédéterminé à compter du début du chauffage du récipient à chambre multiple (10, 60), de telle façon que la deuxième chambre (14, 50) soit maintenue à la température de stérilisation pendant un temps défini.

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