| Summary: | 碩士 === 國立台灣工業技術學院 === 工程技術研究所 === 85 === Conventional pipette design is ill-suited for laboratory
technicians with awkward posture of arm-lifting and wrist ulnar
deviation. A tripod grip pipette was designed and evaluated to
determine if it was possible means for reducing or eliminating
the fatigue and ailments of shoulder and hand experienced by
laboratory technicians. This study describes the results
of an investigation of the difference in performance, posture
used, muscle strain ( EMG ) and subjective ratings of three
pipette ( models A,B and C ) . Both models A and B were pipette
on the market. Model C was developed for validation. The
gripping posture of the three models is distinct both in
anatomical and functional sense. Performance evaluation of
pipette models A, B and C on different tasks, indicated that
using the proposed model C resulted in a significant lower
precision error rate and shorter completion time, a better
operating posture, least strain on upper trapezius and middle
deltoid,and highest subjective ratings among the three.
Model C appeared to provide the greatest opportunity for
reducing the risk of work-related upper limbs injuries while
pipetting.Ketwords : Pipette ; pipetting ; Ergonomic design ;
EMG
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