Objective

2

To explore effective methods for the first cleaning of metal precision surgical instruments and evaluate the effect to improve the quality of cleaning.

Methods

2

The 184 newly purchased precision surgical instruments used in departments including Otolaryngology

Thoracic surgery and Orthopedics were selected and divided into two groups. 94 pieces in the control group were treated in the method of soaking in the alkaline detergent with a ratio of 1:100 and a temperature of 60-80 °C for 10 minutes+mechanical cleaning (alkaline detergent program); 90 pieces in the observation group were treated in the method of soaking in the alkaline detergent with a ratio of 1∶100 and a temperature of 60-80 °C for 10 minutes and then manual cleaning+mechanical cleaning (alkaline detergent program). After cleaning the instruments in both groups

the quality of the lumen instruments was checked by methods of visual inspection

illuminated magnifier

white gauze

and white strip. The sterilization packages were also opened again after autoclave sterilization to evaluate the oily waste degradation.

Results

2

The pass rates of visual inspection and illuminated magnifier

white gauze and white strip

visual inspection and illuminated magnifier after sterilization

and white gauze and white strip after sterilization in observation group were significantly higher than those of control group (100.00% vs. 94.68%

98.89% vs. 92.55%

98.89% vs. 90.43%

100.00% vs. 91.49%

respectively

P

<

0.05).

Conclusion

2

To ensure cleaning quality

metal precision surgical instruments should be correctly cleaned before the first use. The method of soaking in alkaline detergent for 10 minutes+manual cleaning+mechanical cleaning (alkaline detergent program) can significantly improve the cleaning quality.