TY - GEN
T1 - An implantable artificial esophagus to propel food simulating natural anatomical esophageal function
AU - Taira, Yasunori
AU - Shiraishi, Yasuyuki
AU - Miura, Hidekazu
AU - Yambe, Tomoyuki
AU - Homma, Dai
AU - Kamiya, Kuroudo
AU - Miyata, Go
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/9/8
Y1 - 2015/9/8
N2 - We have been developing implantable esophagus devices to achieve dynamic assistance in food-taking function for the patients suffering from esophageal cancer. Promotion of the quality of life as well as the activity of daily lives of the patients with severe esophageal cancer so that the esophageal tubular restoration by stenting or gastroesophagotomy are often carried out in order to ameliorate self-digestive function. Some patients with those severe cancer have difficulty to make food deliver smoothly due to the lack of peristaltic motions in the lesion. In this study, we presented a new structure of an artificial esophagus which was capable of delivering foods from a mouth to stomach with a distributed mechanism. We examined the natural esophageal specimens in order to obtain a relationship between volume and pressure. Prior to the measurement of mechanical characteristics of the natural specimen, the portions of esophagus were freshly extracted from goats after the experiments. Then we modeled the characteristics of natural esophageal functions through a digestive process from the anatomical, biomechanical point of view and confirmed the functional distribution in the artificial esophagus that could drive the contents from proximal to distal. A new structural design for the proximal esophageal portion was also developed to achieve squeezing motion by using a shape memory alloy fiber as an actuator and its dynamic characteristics were tested.
AB - We have been developing implantable esophagus devices to achieve dynamic assistance in food-taking function for the patients suffering from esophageal cancer. Promotion of the quality of life as well as the activity of daily lives of the patients with severe esophageal cancer so that the esophageal tubular restoration by stenting or gastroesophagotomy are often carried out in order to ameliorate self-digestive function. Some patients with those severe cancer have difficulty to make food deliver smoothly due to the lack of peristaltic motions in the lesion. In this study, we presented a new structure of an artificial esophagus which was capable of delivering foods from a mouth to stomach with a distributed mechanism. We examined the natural esophageal specimens in order to obtain a relationship between volume and pressure. Prior to the measurement of mechanical characteristics of the natural specimen, the portions of esophagus were freshly extracted from goats after the experiments. Then we modeled the characteristics of natural esophageal functions through a digestive process from the anatomical, biomechanical point of view and confirmed the functional distribution in the artificial esophagus that could drive the contents from proximal to distal. A new structural design for the proximal esophageal portion was also developed to achieve squeezing motion by using a shape memory alloy fiber as an actuator and its dynamic characteristics were tested.
KW - artificial esophagus
KW - biomechanical esophageal properties
KW - distributed system
KW - shape memory alloy fiber
KW - squeezing motion
UR - http://www.scopus.com/inward/record.url?scp=84957615182&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84957615182&partnerID=8YFLogxK
U2 - 10.1109/ASCC.2015.7244863
DO - 10.1109/ASCC.2015.7244863
M3 - Conference contribution
AN - SCOPUS:84957615182
T3 - 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015
BT - 2015 10th Asian Control Conference
A2 - Selamat, Hazlina
A2 - Ramli, Hafiz Rashidi Haruna
A2 - Faudzi, Ahmad Athif Mohd
A2 - Rahman, Ribhan Zafira Abdul
A2 - Ishak, Asnor Juraiza
A2 - Soh, Azura Che
A2 - Ahmad, Siti Anom
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Asian Control Conference, ASCC 2015
Y2 - 31 May 2015 through 3 June 2015
ER -
