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2015 | OriginalPaper | Chapter

6. Development of Tissue Surrogates for Photoelastic Strain Analysis of Needle Insertion

Authors : Rachel A. Tomlinson, Wei Kang Aui Yong, Guy Morton, Zeike A. Taylor

Published in: Mechanics of Biological Systems and Materials, Volume 7

Publisher: Springer International Publishing

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Abstract

This paper focuses on the development of full-field experimental methods for validating computational models of needle insertion, and specifically the development of suitable tissue surrogate materials. Gelatine also known as “ballistic gel” is commonly used as a tissue surrogate since the modulus of elasticity matches that of tissue. Its birefringent properties also allow the visualisation of strains in polarised light. However, other characteristics of tissue are not well emulated by gelatine, for example the fibrous network of cells of tissue is not well represented by the granular microstructure of gelatine, which tears easily. A range of birefringent flexible materials were developed and calibrated for photoelastic analysis. The most suitable were then used to explore quantitatively the different strain distributions in tissue when subjected to a range of needles with different tip profiles.

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Title: Development of Tissue Surrogates for Photoelastic Strain Analysis of Needle Insertion
Authors: Rachel A. Tomlinson
Wei Kang Aui Yong
Guy Morton
Zeike A. Taylor
Publisher: Springer International Publishing
Book: Mechanics of Biological Systems and Materials, Volume 7
Print ISBN: 978-3-319-06973-9

Electronic ISBN: 978-3-319-06974-6

Copyright Year: 2015
DOI: https://doi.org/10.1007/978-3-319-06974-6_6