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

Research output: Chapter in Book/Report/Conference proceedingChapter


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 N 2 O 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. N 2 O 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, Joao Manuel R.S. Tavares, Marcos Pinotti Barbosa, A.P. Slade
Place of PublicationDordrecht
Number of pages19
ISBN (Electronic)9789400740686
ISBN (Print)9789400740679
Publication statusPublished - 29 Mar 2012

Publication series

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


  • Nitrous Oxide
  • Anastomotic Leak
  • Leak Detection
  • Testing Ring
  • Rigid Tube

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Mechanical Engineering
  • Computer Vision and Pattern Recognition
  • Computer Science Applications
  • Artificial Intelligence


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