碱性电解水用于医疗器械清洗效果的研究

目的研究碱性电解水用于医疗器械的清洗效果及其对金属的腐蚀性。方法采用碱性水加超声波的方法对实体光滑、实体带齿和管腔类医疗器械进行清洗，并将其清洗效果与常规方法、碱性水不加超声波方法和对照组进行比较；同时对碱性水浸泡金属的腐蚀性进行试验。结果实体光滑、实体带齿和管腔类器械清洗效果，4组方法间比较，差异均具有统计学意义（F值分别为10.868、14.268和6.146，均P＜0.05）。实体光滑类器械，碱性电解水加超声波组和未加超声波组的清洗效果好于常规方法组，差异均有统计学意义（均P＜0.005）；实体带齿类器械：碱性电解水加超声波组的清洗效果好于常规方法组和碱性电解水未加超声波组，差异具有统计学意义（均P＜0.001）；管腔类器械：碱性电解水加超声波组、碱性电解水未加超声波组以及常规清洗方法组3组清洗效果，两两比较，差异均无统计学意义（均P＞0.05）。碱性电解水对不锈钢和铜基本无腐蚀性。结论碱性电解水对实体光滑和实体带齿类医疗器械的清洗效果优于常规清洗方法，若加超声波处理，效果更佳。

Effectiveness of alkaline electrolyzed water in cleaning medical instruments

Objective To study the effectiveness of alkaline electrolyzed water （AEW） in the cleaning of medical instruments and its corrosive effect on metal. Methods Medical instruments of solid smooth, solid with gear or tube were cleaned with AEW adding ultrasonic washing, cleaning efficacy were compared with conventional method, AEW without pulsing ultrasonic washing and control group, corrosive effect of AEW on metal immersed in AEW was tested. Results Cleaning efficacy of solid smooth, solid with gear or tube instruments were significantly differ- ent among four groups（F = 10. 868, 14. 268, 6. 146, respectively, all P〈0.05）. For solid smooth instruments, cleaning with AEW adding ultrasonic and cleaning without ultrasonic had a better effect than conventional cleaning （both P〈0. 005）; For solid with gear instruments, AEW adding ultrasonic cleaning obviously had a better effect than conventional cleaning and AEW without ultrasonic cleaning（both P〈0. 001）; For tube instruments, cleaning efficacy of three cleaning methods were not significantly different （all P〈0.05）. AEW had no corrosive effect on stainless steel and copper. Conclusion The cleaning efficacy of AEW on solid smooth, solid with gear instruments is su- perior to conventional cleaning method, and can achieve better effectiveness if ultrasonic cleaning is added.