戊二醛熏蒸柜对医疗器械及胶管类物品灭菌效果观察

OBSERVATION ON STERILIZATION EFFICACY OF GLUTARALDEHYDE DISINFECTOR ON MEDICAL APPLIANCES AND MEDICAL-CATHETERS

目的观察戊二醛熏蒸柜的灭菌效果,探讨其灭菌可行性。方法用载体杀菌试验和模拟现场杀菌试验方法,对戊二醛熏蒸柜杀菌效果进行了观察。结果该熏蒸柜内加入含量20 g/L戊二醛消毒液加热汽化,终浓度达到47 g/m3,在42℃条件下熏蒸作用6.5 h,对布放于柜内各层不锈钢载体及止血钳表面、齿端及轴关节的枯草杆菌黑色变种芽孢可达到完全杀灭;对内孔径≥φ4.0 mm,长度≤1 500 mm的医用乳胶管内枯草杆菌黑色变种芽孢可达完全杀灭;对内孔径≤2.8 mm的医用乳胶管内枯草杆菌黑色变种芽孢不能完全杀灭。结论戊二醛熏蒸柜在本试验条件下,可杀灭完全暴露物体上的枯草杆菌黑色变种芽孢,但不能杀灭较细管腔内污染的细菌芽孢。

Objective To observe the sterilization efficacy of glutaraldehyde disinfector on medical appliances and catheters. Methods The carrier quantitative germicidal test and simulated field trial were used to carry out the experiment. Results 20 g/L glutaraldehyde in this machine was vaporized and the final concentration of which achieved 47 g/m3.Then under 42℃ and exposed to this glutaraldehyde vapor for 6.5h,Spores of Bacillus subtilis var.niger on the stainless steel carrier and the surface,denta-terminal and joint of hemostatic forceps that placed on different layers in the machine were totally killed.The spores of B.subtilis var.niger in medical-catheters with diameter≥φ4.0 mm and length ≤1 500 mm could also totally be killed while that in medical-catheters with diameter≤φ2.8mm could not be totally killed. Conclusion The glutaraldehyde disinfector can kill all the spores of B.subtilis var.niger on the surface of medical appliances except for those in the medical-catheters with smaller diameters.