This study aims to evaluate the ergonomic design of ultrasonic probe by surface electromyography acquisition , analysis technology and Borg scale. The method can be the reference for the ergonomic design evaluation of ultrasonic probe. 10 volunteers were invited to use two ultrasonic probe with design and weight difference to simulate the posture and action as the sonographers check for patients. Mp - 150 physiological signal recorder records the musclesrnactivity of the two forearm muscles---flexor digitorum superficialis and extensor carpi radialis longus. Borg scalernwas used to assess the volunteers'subjective feedback. The results showed the ultrasonic probe with heavier and smaller width of the handle suffers from greater work load, leading to more easily localized muscle fatigue; the results of the subjective feedback of the volunteers had coincident correlation with results measured by surface electromyography . This research method can be used as the methodology to evaluate the ergonomic design of the medical device handle. The study can guide sonographers in selection of ultrasonic probes.%本研究利用表面肌电采集、分析技术和Borg量表来对超声探头的人因工程学设计进行评价,为超声探头的人因工程学设计评价提供方法参考.在本研究中,邀请10个志愿者使用两个在设计样式和重量存在差异的超声探头进行模拟超声检测操作任务.使用MP150生理信号记录仪记录前臂上的两块肌肉-指浅屈肌和桡侧腕长伸肌的肌肉活动.同时应用Borg量表对志愿者的主观反馈进行评定.结果显示使用质量较重和手柄宽度较小的超声探头时手部要承担更大的劳动负荷,更容易使局部肌肉产生疲劳,同时志愿者主观反馈结果与表面肌电测定结果存在一致相关性.这个研究方法可以作为对医疗器械手柄人因设计的评价的方法,研究结果可以作为医院在选择超声探头的指导.
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