In 2001, a project to identify the underlying factors contributing to the development of ergonomic injuries to pipetters and to reduce the factors attributed to the design of the pipette was undertaken by VistaLab Technologies.
See study summary here.
An evaluation of the ergonomic pipette design at the time revealed that each of the major manufacturers produced an axial grip pipette. However, the ergonomic focus appeared to be limited to the plunger effort levels and grip contouring. Unfortunately, all of the axial design pipettes failed to address the fundamental issue of working posture, in particular, the stresses to the upper extremity beyond the hand itself.
Ergonomic testing was conducted using five 200 μl pipettes to determine the overall effect of each product on the key ergonomic factors. Even though the study and results are from 2001, the pipetting stressers and key ergonomic design factors remain the same today.
(Illustration of subjects wired for monitoring muscle groups and dynamic postures of the wrist and shoulder joints)
Click here to see the study report summary of the key findings.