Design of a drop-in EBI sensor probe for abnormal tissue detection in minimally invasive surgery

Guanmin Zhu, Liang Zhou, Shilong Wang, Pengjie Lin, Jing Guo*, Shuting Cai, Xiaoming Xiong, Xiaobing Jiang, Zhuoqi Cheng

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

It is a common challenge for the surgeon to detect pathological tissues and determine the resection margin during a minimally invasive surgery. In this study, we present a drop-in sensor probe based on the electrical bioimpedance spectroscopic technology, which can be grasped by a laparoscopic forceps and controlled by the surgeon to inspect suspicious tissue area conveniently. The probe is designed with an optimized electrode and a suitable shape specifically for Minimally Invasive Surgery (MIS). Subsequently, a series of ex vivo experiments are carried out with porcine liver tissue for feasibility validation. During the experiments, impedance measured at frequencies from 1 kHz to 2 MHz are collected on both normal tissues and water soaked tissue. In addition, classifiers based on discriminant analysis are developed. The result of the experiment indicate that the sensor probe can be used to measure the impedance of the tissue easily and the developed tissue classifier achieved accuracy of 80% and 100% respectively. 
Original languageEnglish
JournalJournal of Electrical Bioimpedance
Volume11
Issue number1
Pages (from-to)87-95
ISSN1891-5469
DOIs
Publication statusPublished - Jan 2020

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