2014年10月

# Evaluation of Stability and Effect of Gripping Method on a Laser-Induced Liquid Jet Hand Applicator for Usability Improvement

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 10/2014
• T. Kato
• ,
• T. Arafune
• ,
• T. Washio
• ,
• Y. Yamauchi
• ,
• A. Nakagawa
• ,
• Y. Ogawa

58
1

1786

1789

DOI
10.1177/1541931214581372

We developed a pulsed laser-induced liquid jet (LILJ) system to dissect tumor tissues while preserving fine<br />
blood vessels within deep and narrow working spaces and evaluated its utility and safety. However, the hand<br />
applicator of LILJ is heavy for the operator because of the torque generated by some of the accessories.<br />
Consequently, the operator cannot work with precision. To overcome this problem, we ergonomically<br />
redesigned the hand applicator of LILJ. Here, we report an assessment of the redesigned hand applicator’s<br />
usability and stability that were evaluated by using the torque generated around the center of gravity of the<br />
hand applicator and the hit probability. We considered the load on the hand by force measured using a forcesensitive sensor attached to the hand applicator. We showed that three out of five subjects were able to<br />
generate enough force equally to stabilize the position of the proposed hand applicator after a disturbance<br />
was generated and were able to reduce the force enough to control the disturbance.

リンク情報
DOI
https://doi.org/10.1177/1541931214581372