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目的探讨过氧化氢低温等离子体灭菌器灭菌效果的监测方法。方法自制5种内径2~4 mm、长500~2 500 mm的模拟综合生物PCD,每次取2~3种模拟综合生物PCD放置在6个测试点,分3批次共进行24个全循环灭菌周期,灭菌结束后,进行生物培养并判读培养结果是否合格。结果 3批次180个测试管不合格率26.1%;144个测试点不合格率24.3%;不合格率最高的下中位置测试管与测试点不合格率分别为7.78%、7.63%;下前中位置(内径2~4 mm,长度500 mm)测试管与测试点不合格率为0;管腔内径与长度相等满载不合格率5.00%大于空载不合格率2.22%。结论本实验制作的管腔内径≥2 mm,长500 mm的模拟综合生物PCD可以对过氧化氢低温等离子体灭菌器的灭菌效果进行监测,并以此结果判定灭菌是否合格。
Objective To investigate the sterilization method of hydrogen peroxide plasma sterilizer. Methods Five kinds of simulated synthetic bio-PCD with internal diameters of 2 to 4 mm and length of 500 to 2 500 mm were prepared and placed in 6 test points with 2 to 3 kinds of simulated synthetic bio-PCDs at a time. 24 full cycles Sterilization cycle, after sterilization, biological culture and interpretation of the results of the training is qualified. Results The failure rate of 180 test tubes in 3 batches was 26.1%. The failure rate of 144 test points was 24.3%. The failure rates of test tubes and test points with the highest failure rate were 7.78% and 7.63% respectively. In the middle position (diameter 2 ~ 4 mm, length 500 mm) test tube and test point failure rate is 0; lumen diameter and length equal to full load failure rate of 5.00% is greater than the no-load failure rate of 2.22%. Conclusion The simulated biocaptured PCD with a diameter of 2 mm and a length of 500 mm produced by this experiment can monitor the sterilizing effect of the hydrogen peroxide plasma sterilizer and determine whether the sterilization is qualified.