In-vivo and in-vitro mechanical properties of pig liver during needle puncture for needle insertion

Masaki Eto, Hiroshi Tsukihara, Etsuko Kobayashi, Kazuo Kiguchi, Ichiro Sakuma, Makoto Hashizume

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Internal organ's models have been studied for automatic needle insertion or a VR simulator that is used for surgical training. In this study, a puncture experiment was performed with the puncture device to examine the change of mechanical property between the tissue in-vivo and the excised tissue in mechanical property measurement experiments that are necessary to design the internal organ's model. In the experiments, a liver of the same pig was punctured in-vivo and in-vitro, and the applied force to the needle from the liver, the puncture depth and the puncture speed are measured to examine the change of the organ's property. In in-vitro experiments, the change of the organ's property of the elapsed time after the animal was euthanized was also examined. The experimental results showed that the amount of the puncture forces of the liver in-vitro were about twice larger than those of the liver in-vivo. The puncture displacements at the moment of piercing the surface of the liver in-vivo and in-vitro were almost the same. The parameters of the Kelvin Boltzmann model for excised tissue indicated higher value than those of in-vivo. These results suggested that there is a difference in properties between the tissue in-vivo and the excised tissue and careful consideration is required in the modeling.

本文言語英語
ホスト出版物のタイトル2019 IEEE 1st Global Conference on Life Sciences and Technologies, LifeTech 2019
出版社Institute of Electrical and Electronics Engineers Inc.
ページ155-159
ページ数5
ISBN(電子版)9781728105437
DOI
出版ステータス出版済み - 3 2019
イベント1st IEEE Global Conference on Life Sciences and Technologies, LifeTech 2019 - Osaka, 日本
継続期間: 3 12 20193 14 2019

出版物シリーズ

名前2019 IEEE 1st Global Conference on Life Sciences and Technologies, LifeTech 2019

会議

会議1st IEEE Global Conference on Life Sciences and Technologies, LifeTech 2019
Country日本
CityOsaka
Period3/12/193/14/19

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Biomedical Engineering
  • Artificial Intelligence
  • Health Informatics
  • Neuroscience (miscellaneous)

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