BioDesign Lab, School of Engineering, Computer and Mathematical Sciences, Auckland University of Technology, Auckland, New Zealand.
Department of Surgery, University of Auckland, Auckland, New Zealand.
PLoS One. 2022 Feb 2;17(2):e0261322. doi: 10.1371/journal.pone.0261322. eCollection 2022.
Despite rigorous sterilization protocols placed in surgical procedures, there is demonstrated evidence that show patients contract infections while hospitalized. This study aims to investigate the presence of biological materials in osteotome surgical tools after sterilization processes, determine the relationship between lack of sharpness and cross-contamination, and evaluate the influence of materials surface coating as a potential contamination preventive. Three commercially available osteotomes with different surface coatings were studied and submitted to a procedure of bone-cutting cycles. After use, each was sterilized and examined under SEM and EDS. Bone contaminants were detected in each osteotome although the PVD coated osteotome demonstrated significantly less contamination than either the as-supplied or electroless nickel coated one. According to the results, there is an association between blade sharpness and post-sterilization bone contamination. These findings suggest either disposable osteotomes should be used in surgical procedures, or an effective sharpen process should both be established and monitored to minimise post-operative infections.
尽管在外科手术中采用了严格的灭菌方案，但有证据表明，患者在住院期间会感染。本研究旨在调查灭菌后骨凿手术工具中是否存在生物材料，确定锋利度不足与交叉污染之间的关系，并评估材料表面涂层作为潜在污染预防措施的影响。研究了三种具有不同表面涂层的市售骨凿，并进行了骨切割循环的使用测试。使用后，每个骨凿都经过消毒，并在 SEM 和 EDS 下进行检查。尽管 PVD 涂层骨凿的污染明显少于原始供应或化学镀镍涂层的骨凿，但在每个骨凿中都检测到了骨污染物。根据结果，刀片锋利度与灭菌后骨污染之间存在关联。这些发现表明，在手术过程中要么应使用一次性骨凿，要么应建立并监测有效的锐化工艺，以最大程度地减少术后感染。
