呼吸机管路用什么消毒一种新型呼吸机内管路消毒装置的设计与临床消毒效果观察

This study aimed to develop a new disinfection device for the internal tubing of ventilators and evaluate its efficacy. The tandem device was designed to disinfect the internal tubing of ventilators with hydrogen peroxide (H₂O₂) dry mist that was produced by jet technique. Forty ventilators utilized for mechanical ventilation in confirmed infectious disease cases, each with ≥72 h of continuous operation, were included in the assessment. Colony-forming units (CFU) in air intake, air outlet, and internal tubing, were determined at the following time point, before disinfection, 1 h after disinfection, and 4 h after disinfection. The eligibility criteria were CFU≤20 per sample with no detectable pathogenic bacteria. All data were subjected to statistical analysis. The qualified rate was 0% before disinfection by H2O2, while it was 100% after disinfection for 1 h and 4 h, and CFU in each detection site was significantly lower after disinfection (p＜0.05), and no pathogenic bacterial growth was detected. The tandem H₂O₂ dry mist-disinfecting device is reliable and effective, and the expected effect could be achieved by 1 h disinfection.