An Ergonomic Evaluation of Convex Probe Designs Using Objective and Subjective Measures
Use of a convex probe suitable to the hand and operating motion of the probe can contribute to prevention of sonographers from musculoskeletal disorders at work. The present study presents an ergonomic evaluation process customized to convex array ultrasound probe design. Various convex probe designs were evaluated by a mix of nine sonographers and medical doctors in terms of EMG activities of the upper extremity muscles, motion ranges of the upper extremity joints, and subjective satisfaction measures. A randomized controlled testing was administered for the probe designs in a simulation workstation at a designated speed of tilting, pushing, and rotating of convex probe. The subjective satisfaction results were found effective to identify preferred design features in detail, while the EMG and motion analysis results to identify a preferred probe design overall in terms of muscular load at the hand and postural comfort of the forearm.
KeywordsConvex probe design Ergonomic evaluation Preferred design feature
The present research was jointly supported by Samsung Medison Corporation, Mid-Career Research Programs through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2018R1A2A2A05023299), and the Ministry of Trade, Industry, and Energy (No. 10063384; R0004840, 2017).
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