Stokes, WE, Jayne, DG orcid.org/0000-0002-8725-3283, Alazmani, A orcid.org/0000-0001-8983-173X et al. (1 more author) (2017) A physical simulation to investigate the effect of anorectal angle on continence. In: Proceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017. 13th IASTED International Conference on Biomedical Engineering (BioMed 2017), 20-21 Feb 2017, Innsbruck, Austria. IEEE , pp. 168-175. ISBN 978-0-88986-990-5
Abstract
This paper investigates the effect of the anorectal angle on continence using a physical model of the anatomical system. A method to fabricate, measure and control a physical model for the simulation of human faecal continence is presented. A model rectum and associated soft tissues, based on geometry from an anonymised CT dataset, was fabricated from silicone and showed behavioural realism to ex vivo tissue. Simulated stool matter with similar rheological properties to human faeces was developed. Instrumentation and control hardware are used to regulate injection of simulated stool into the system, define the anorectal angle and monitor stool flow rate, intra-rectal pressure and puborectalis force. A study was then conducted in which simulated stool was introduced to the system for anorectal angles between 80° and 100°. Results obtained from the study give insight into the effect of the anorectal angle on continence. Stool leakage was reduced as the angle became more acute. Conversely, intra-rectal pressure increased. These data demonstrate that the anorectal angle is fundamental in maintaining continence. This work is valuable in helping improve our understanding of the physical behaviour of the faecal system. It has particular relevance facilitating improved technologies to treat or manage severe faecal incontinence.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 International Association of Science and Technology for Development - IASTED. This is an author produced version of a paper published in Proceedings of the 13th IASTED International Conference on Biomedical Engineering (BioMed). Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Faecal incontinence, anorectal angle, rectum model |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Systems and Design (iESD) (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Functional Surfaces (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Inst of Biomed & Clin Sciences (LIBACS) (Leeds) > Trans Anaesthetics & Surgical Sciences (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/M000109/1 EPSRC EP/N027345/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Aug 2017 09:43 |
Last Modified: | 14 Dec 2018 12:31 |
Published Version: | http://ieeexplore.ieee.org/document/7893286/ |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.2316/P.2017.852-046 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:119700 |