NDLI: Development of a robot which can simulate swallowing of food boluses with various properties for the study of rehabilitation of swallowing disorders

Content Provider	IEEE Xplore Digital Library
Author	Yohan Noh Segawa, M. Sato, K. Chunbao Wang Ishii, H. Solis, J. Takanishi, A. Katsumata, A. Iida, Y.
Copyright Year	2011
Description	Author affiliation: Graduate School of Advanced Science and Engineering at Waseda University, 2-2, Wakamatsu-cho, Shinjuku-ku Tokyo 162-8480, JAPAN TWIns Room# 3C-202 (Yohan Noh; Segawa, M.; Sato, K.; Chunbao Wang) \|\| Mechanical Engineering Department, Waseda University, Japan (Solis, J.; Takanishi, A.) \|\| Department of Oral Radiology, Asahi University School of Dentistry, 1851-1 Hozumi Mizuho-shi, Gifu pref., 501-0296, Japan (Katsumata, A.; Iida, Y.) \|\| Faculty of Science and Engineering, Waseda University, Japan (Ishii, H.)
Abstract	Many patients suffer from swallowing disorders (dysphagia). There are many treatments for these disorders, such as swallowing therapy, surgery, and dietary modification. In our study, we focuse on dietary modification, a common approach. Normally, the swallowing is affected by food bolus properties such as hardness, stickiness and rheological characteristics, and dietary modifications can prevent swallowing disorder patients from suffering dysphagia (aspiration), as well as promote good nutrition. Based on these facts, our goal is to find foods which do not cause dysphagia, and develop food for swallowing disorder patients accordingly. Therefore, we are proposing an in-vitro Dynamic VFSS (Video Fluorographic Swallowing Study) simulation system which uses advanced robotics technology to mimic the dynamic process of swallowing and monitors the status and movement of the food bolus inside the system, for objective evaluation of the swallowing process. The dynamic VFSS simulation system consists of a head, mandible, neck, tongue, pharynx, and larynx which reproduce human anatomy. It is driven by 16 actuators with wire driving mechanisms. In this paper, we will present the dynamic VFSS simulation unit in detail. In addition, we will detail a set of the experiments carried out to determine whether food bolus properties can affect dysphagia or not. To observe the movement of the food bolus, we use a Video Fluoroscopy (VF) unit. The results of the experiments show that thickened boluses have a tendency to leave residue in the epiglottic vallecula. In contrast, liquids cause less residue, and increase the risk of dysphagia (aspiration). Moreover, this study shows that the frontal image, as well as the lateral image, is important for evaluating residual food in the oral- pharyngeal space.
Starting Page	4676
Ending Page	4681
File Size	1914337
Page Count	6
File Format	PDF
ISBN	9781612843865
ISSN	10504729
e-ISBN	9781612843858
DOI	10.1109/ICRA.2011.5980134
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-09
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tongue Solid modeling Wires Barium Humans Dynamics Bones
Content Type	Text
Resource Type	Article
Subject	Artificial Intelligence Control and Systems Engineering Electrical and Electronic Engineering Software

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