PLASMA GAS MIXTURE FOR STERILIZER AND METHOD

A method for plasma sterilization comprises exposing an article to be sterilized to a neutral active species of a plasma generated from a premixed gas mixture comprising oxygen, hydrogen, and a noble gas. The exposure of the article to the plasma is carried out at reduced pressures and a chamber tem...

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Bibliographische Detailangaben
Hauptverfasser:	FISHER, JIM, CAMPBELL, BRYANT A, MOULTON, KERN, A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DISINFECTION, STERILISATION, OR DEODORISATION OF AIR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL PLASMA TECHNIQUE PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS
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Beschreibung
Zusammenfassung:	A method for plasma sterilization comprises exposing an article to be sterilized to a neutral active species of a plasma generated from a premixed gas mixture comprising oxygen, hydrogen, and a noble gas. The exposure of the article to the plasma is carried out at reduced pressures and a chamber temperature of less than 63 DEG C. for a time period sufficient to effect sterilization. The apparatus for plasma sterilization of articles comprises a plasma generator, a sterilizing chamber, and a source of pressurized gas mixture in fluid communication with the plasma generator. The source of pressurized gas mixture has a noble gas and a substantially nonflammable mixture of hydrogen and oxygen, which is preferably between about 2.0 to 2.4 (v/v) percent hydrogen and between 2.6 to 3.0 (v/v) percent oxygen.