ArticleDigestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society2026
Development and Evaluation of an Ergonomically Optimized Scope-Holder for Flexible Endoscopy (With Video).
Article in Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesGrowing endoscopy demand has increased physical workload and injury risk among endoscopists, while current ergonomic solutions remain limited. We developed a newly motion-optimized endoscope-holding device (scope-holder) designed to reduce muscular burden, allowing each operator to adjust the scope position according to individual preference. This study assessed its ergonomic impacts in a simulated setting.
methodsClinical endoscopists and nonmedical participants without any medical background were recruited to collect data. Each participant performed a simulated endoscopic marking task with and without the scope-holder. We compared the procedure time of the task, evaluated muscle efforts in the upper arm, forearm, and shoulder using wireless electromyography, as well as mental workload using NASA-TLX across the two settings.
resultsA total of 26 participants, including 17 clinical endoscopists and 9 nonmedical participants, were enrolled. In the overall cohort, the scope-holder assisted group significantly reduced activation of biceps brachii (p < 0.001), trapezius (p < 0.001), flexor carpi ulnaris (p = 0.049) muscles and NASA-TLX scores (p = 0.003). Additionally, the assisted group achieved a shorter procedure time (p = 0.018) compared with the non-assisted group. Subgroup analysis showed reduced muscle load in both clinical endoscopists and nonmedical participants (p < 0.05), with additional improvements in mental workload (p = 0.004) and the procedure time (p = 0.027) observed only in nonmedical participants, whereas clinical endoscopists showed no significant difference in mental workload (p = 0.299) and procedure time (p = 0.229).
conclusionsOur newly developed scope-holder, designed to accommodate the operator's natural scope motion, effectively reduced physical and mental workload. It offers a practical solution to improve ergonomics in endoscopic clinical practice.
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