Evaluation of stability and effect of gripping method on a laser-induced liquid jet hand applicator for usability improvement

Takashi Kato, Tatsuhiko Arafune, Toshikatsu Washio, Yasushi Yamauchi, Atsuhiro Nakagawa, Yoshikazu Ogawa, Teiji Tominaga, Ichiro Sakuma, Etsuko Kobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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

Original languageEnglish
Title of host publication2014 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014
PublisherHuman Factors an Ergonomics Society Inc.
Pages1786-1789
Number of pages4
ISBN (Electronic)9780945289456
DOIs
Publication statusPublished - 2014
Event58th International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014 - Chicago, United States
Duration: 2014 Oct 272014 Oct 31

Publication series

NameProceedings of the Human Factors and Ergonomics Society
Volume2014-January
ISSN (Print)1071-1813

Other

Other58th International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014
Country/TerritoryUnited States
CityChicago
Period14/10/2714/10/31

ASJC Scopus subject areas

  • Human Factors and Ergonomics

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