识别和预防由水生矿物质引起的手术器械表面改变

Identification and prevention of surface alterations on surgical Instruments caused by waterborne minerals•Name: Dr. Matthias Tschoerner•Affiliation:Chemische FabrikDr. Weigert GmbH & Co. KGHamburg (Germany)Working with the invisible chemical…Water Constituents and Influences on processing of Medical DevicesWater Qualities for processing of Medical DevicesCharacterization of surface alterations caused by Waterborne MineralsObjectiveWhenheatingwaternon-carbonatehardnessremainsin solution,butcarbonatehardnessleadstostubbornlimedeposits.Waterqualities& ingredientsothersolublese.g. silicic acidNa-,K-saltsnon-carbonatehardness(other Ca-and Mg-salts)Total hardness= non-carbonate hardness+ carbonatehardness200 mg CaCO3/l =50 mg/l + 150 mg/lppm = mg/Lin-solublese.g.sand, rostcarbonatehardness(Ca-hydrogen carbonate&.Ca-Carbonate,Mg-hydrogen carbonate&. Mg-Carbonate)22 Nov 2024M. Tschoerner3UseTreatment at point of use TransportDisassembling Pre-cleaningCleaning & DisinfectionC