A comparison of the technical parameters in single-use disposable flexible bronchoscopes

Abstract Background Flexible bronchoscopy plays an important role in the clinical practice of anesthesia and intensive care. With the ongoing COVID-19 epidemic, the use of single-use disposable flexible bronchoscopes (SUDFB) has become more popular due to concerns of cross-contamination. Multiple manufacturers have produced their own SUDFB, which have different technical parameters. Detailed information is often not provided by the manufacturers. It is also difficult to compare SUDFB between manufacturers as measurements have not been standardized. The aim of the study was to compare the technical specifications of twelve bronchoscopes from six manufacturers - two sizes per manufacturer. Methods Six parameters with clinical significance have been chosen – brightness, field of view, suction, weight, length & angulation. Multiple measurements were done by blinded examiners, and results with averages and standard deviations were tabulated. This study aims to provide essential information for anesthetists and intensivists when choosing between different models of SUDFBs from different companies. Results The CMAC 3.5 had the strongest light intensity while the Vathin slim had the weakest light intensity. All devices had a similar angular field of view. The Bronchoflex Vortex had the strongest suctioning ability. The anterior and posterior angulation of all devices were similar. The Bronchoflex Agile, Vortex and CMAC devices were lighter than the other devices. Conclusion While the different models of SUDFBs had comparable specifications, there were differences in their parameters and costs. Choosing an appropriate SUDFB for bulk purchase is a multi-factorial decision that will also need to take into account operator preference.