Development of a thread testing machine and evaluation of a suture thread with a knot

Kensuke Oda, Hayata Sakai, Kouhei Ohnishi, Eiji Kobayashi

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

Abstract

In this paper, a testing machine for a fine suture thread is developed, and a relation between tension and elongation of the thread with a knot is measured. A fine suture thread is used in microsurgery, and that makes the operation difficult because the thread is fragile. Therefore, an evaluation of the thread is required by surgeons. Conventionally, the thread is evaluated by weight, so that elongation of the thread cannot be measured. This paper develops a testing machine for the fine suture thread using a reaction force observer (RFOB) which calculates force from input of a motor and information of a position sensor, and it enables the machine to measure tension and elongation of the thread at the same time. The testing machine also use tension control which enables the machine to pull the thread from both sides. An experiment was conducted by using the machine. Results showed the tensile strength of a knotted thread was weaker than an unknotted thread and the elongation at rupture of a knotted thread was shorter than that of an unknotted thread. Moreover, the tensile strength and the elongation at rupture did not depend on the number of throws. The machine was verified that it can detect the difference among them.

Original languageEnglish
Title of host publicationProceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1966-1971
Number of pages6
Volume2016-May
ISBN (Electronic)9781467380751
DOIs
Publication statusPublished - 2016 May 19
EventIEEE International Conference on Industrial Technology, ICIT 2016 - Taipei, Taiwan, Province of China
Duration: 2016 Mar 142016 Mar 17

Other

OtherIEEE International Conference on Industrial Technology, ICIT 2016
CountryTaiwan, Province of China
CityTaipei
Period16/3/1416/3/17

Keywords

  • microsurgery
  • reaction force observer
  • suture thread
  • tension control
  • testing machine

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications

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  • Cite this

    Oda, K., Sakai, H., Ohnishi, K., & Kobayashi, E. (2016). Development of a thread testing machine and evaluation of a suture thread with a knot. In Proceedings - 2016 IEEE International Conference on Industrial Technology, ICIT 2016 (Vol. 2016-May, pp. 1966-1971). [7475068] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICIT.2016.7475068