Affiliation:
1. School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai China
2. Shanghai Engineering Research Center of Intelligent Addiction Treatment and Rehabilitation Shanghai China
Abstract
AbstractBackgroundArtificial anal sphincter is an implantable medical device for treating fecal incontinence. Reasonable simulation facilitates the advancement of research and reduces experiments on biological tissue. However, the device's clamping motion and sensor interaction with the intestine in the simulation still require further exploration. This article presents a simulation of the artificial anal sphincter's clamping and sensing and its interaction with the intestinal environment using the Simulation Open Framework Architecture (SOFA).MethodsFirstly, the proposed simulation algorithm and its principles in SOFA are analyzed. Secondly, the clamping motion and sensor system of the artificial anal sphincter are simulated. Thirdly, a finite element model of intestine is established based on the properties of intestinal soft tissue. Finally, the in vitro experiments are performed.ResultsThe simulation results indicate that the sensor system of the artificial anal sphincter has good sensing performance during the clamping motion and fecal accumulation process. Experiments have shown that optimal sensory capabilities can be achieved as the posture of the artificial anal sphincter with a roll angle between 20° and 40°. The comparison demonstrates a mean absolute error of 10%–20% between simulation and in vitro experimental results for sensor forces, which verifies the effectiveness of the simulation.ConclusionThe proposed novel simulation achieves a more comprehensive interaction between the artificial anal sphincter motion and intestinal environment. This study may provide more effective simulation data for guidance in improving the performance of sensor perception of artificial anal sphincter for further research.
Funder
National Natural Science Foundation of China
Science and Technology Commission of Shanghai Municipality
Subject
Biomedical Engineering,General Medicine,Biomaterials,Medicine (miscellaneous),Bioengineering