TY - CHAP
T1 - Using an infra-red sensor to measure the dynamic behaviour of N2O gas escaping through different sized holes
AU - Slade, Alan
AU - Vorstius, Jan
AU - Gonçalves, Daniel
AU - Thomson, Gareth
PY - 2012/3/29
Y1 - 2012/3/29
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85001229008&partnerID=8YFLogxK
UR - http://link.springer.com/chapter/10.1007%2F978-94-007-4068-6_8
U2 - 10.1007/978-94-007-4068-6_8
DO - 10.1007/978-94-007-4068-6_8
M3 - Chapter
AN - SCOPUS:85001229008
SN - 978-94-007-4067-9
T3 - Lecture Notes in Computational Vision and Biomechanics
SP - 159
EP - 177
BT - Technologies for medical sciences
A2 - Jorge , Renato M. Natal
A2 - Tavares , João Manuel R.S.
A2 - Pinotti Barbosa , Marcos
A2 - Slade, A.P.
PB - Springer
ER -