Using an infra-red sensor to measure the dynamic behaviour of N2O gas escaping through different sized holes

Alan Slade*, Jan Vorstius, Daniel Gonçalves, Gareth Thomson

*Corresponding author for this work

Research output: Chapter in Book/Published conference outputChapter


An anastomosis is a surgical procedure that consists of the re-connection of two parts of an organ and is commonly required in cases of colorectal cancer. Approximately 80% of the patients diagnosed with this problem require surgery. The malignant tissue located on the gastrointestinal track must be resected and the most common procedure adopted is the anastomosis. Studies made with 2,980 patients that had this procedure, show that the leakage through the anastomosis was 5.1%. This paper discusses the dynamic behavior of N2O gas through different sized leakages as detected by an Infra-Red gas sensor and how the sensors response time changes depending on the leakage size. Different sized holes were made in the rigid tube to simulate an anastomostic leakage. N2O gas was injected into the tube through a pipe and the leakage rate measured by the infra-red gas sensor. Tests were also made experimentally also using a CFD (Computational Fluid Dynamics) package called FloWorks. The results will be compared and discussed in this paper.

Original languageEnglish
Title of host publicationTechnologies for medical sciences
EditorsRenato M. Natal Jorge , João Manuel R.S. Tavares , Marcos Pinotti Barbosa , A.P. Slade
Number of pages19
ISBN (Electronic)978-94-007-4068-6
ISBN (Print)978-94-007-4067-9
Publication statusPublished - 29 Mar 2012

Publication series

NameLecture Notes in Computational Vision and Biomechanics
ISSN (Print)2212-9391
ISSN (Electronic)2212-9413


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