Mechanical, Automotive, and Materials Engineering, University of Windsor, 401 Sunset Ave, Windsor, ON, N9B 3P4, Canada.
Department of Industrial Engineering, Penn State Behrend, 223 AMIC Building, Erie, PA, 16510, USA.
Appl Ergon. 2020 May;85:103045. doi: 10.1016/j.apergo.2020.103045. Epub 2020 Jan 19.
The purpose of this study was to develop a new pipette design in which the pipette is operated by four fingers, taking into account the anatomy and anthropometry of the hand. The proposed new pipette designs were compared with a traditional thumb-push pipette based on muscle activity, wrist posture, subjective discomfort ratings for upper extremities, and user preference. The results of the study revealed that the four-finger, ergonomic pipette design reduced muscle exertion (25% reduction for aspiration and 35% reduction for dispensing), awkward wrist posture (33% reduction in wrist flexion, radial and ulnar deviation), and perceived discomfort in the wrist, hand and lower arm. Furthermore, most participants (9 of 10) who used a pipette in their daily work preferred the new pipette designs to a traditional thumb-push pipette design. Thus, we expect that this study will contribute to the reduction of WMSDs risk factors and pain.
本研究旨在开发一种新的移液器设计，该设计考虑到手的解剖结构和人体测量学，由四个手指操作。根据肌肉活动、手腕姿势、上肢主观不适评分和用户偏好，将提出的新移液器设计与传统的拇指推动移液器进行了比较。研究结果表明，四指、符合人体工程学的移液器设计减少了肌肉用力（吸入减少 25%，分配减少 35%），手腕姿势不自然（手腕弯曲、桡侧和尺侧偏减少 33%），手腕、手和小臂的不适感也降低了。此外，在日常工作中使用移液器的大多数参与者（10 人中的 9 人）更喜欢新的移液器设计而不是传统的拇指推动移液器设计。因此，我们预计这项研究将有助于降低 WMSD 的风险因素和疼痛。
