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Frontiers of Mechanical Engineering

ISSN 2095-0233

ISSN 2095-0241(Online)

CN 11-5984/TH

Postal Subscription Code 80-975

2018 Impact Factor: 0.989

Front Mech Eng    2011, Vol. 6 Issue (1) : 40-44    https://doi.org/10.1007/s11465-011-0204-4
RESEARCH ARTICLE
Ingestible wireless capsules for enhanced diagnostic inspection of gastrointestinal tract
Mahdi RASOULI(), Andy Prima KENCANA, Van An HUYNH, Eng Kiat TING, Joshua Chong Yue LAI, Kai Juan WONG, Su Lim TAN, Soo Jay PHEE
Robotics Research Center, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
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Abstract

Wireless capsule endoscopy has become a common procedure for diagnostic inspection of gastrointestinal tract. This method offers a less-invasive alternative to traditional endoscopy by eliminating uncomfortable procedures of the traditional endoscopy. Moreover, it provides the opportunity for exploring inaccessible areas of the small intestine. Current capsule endoscopes, however, move by peristalsis and are not capable of detailed and on-demand inspection of desired locations. Here, we propose and develop two wireless endoscopes with maneuverable vision systems to enhance diagnosis of gastrointestinal disorders. The vision systems in these capsules are equipped with mechanical actuators to adjust the position of the camera. This may help to cover larger areas of the digestive tract and investigate desired locations. The preliminary experimental results showed that the developed platform could successfully communicate with the external control unit via human body and adjust the position of camera to limited degrees.

Keywords wireless capsule endoscopy      ingestible medical device      in-body medical device      miniature actuator      medical robot      medical imaging     
Corresponding Author(s): RASOULI Mahdi,Email:mahdi@ntu.edu.sg   
Issue Date: 05 March 2011
 Cite this article:   
Mahdi RASOULI,Andy Prima KENCANA,Van An HUYNH, et al. Ingestible wireless capsules for enhanced diagnostic inspection of gastrointestinal tract[J]. Front Mech Eng, 2011, 6(1): 40-44.
 URL:  
https://academic.hep.com.cn/fme/EN/10.1007/s11465-011-0204-4
https://academic.hep.com.cn/fme/EN/Y2011/V6/I1/40
Fig.1  Conceptual schematic of the system
Fig.2  Schematic overview of the ingestible capsule
Fig.3  Schematic diagrams. (a) 1DOF steerable camera; (b) 2DOF maneuverable camera; (c) wireless capsules with 1DOF; (d) 2DOF actuation mechanisms
Fig.4  Motor control unit
Fig.5  Schematic of motor driver (3-phase inverter)
Fig.6  Voltages of motor phases
Fig.7  experiment. (a) Experimental setup; (b) graphical User Interface and a sample captured image
Fig.8  experiment
Fig.9  An image captured by the capsule (in stomach of a live pig)
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[1] Lin LIN, Mahdi RASOULI, Andy Prima KENCANA, Su Lim TAN, Kai Juan WONG, Khek Yu HO, Soo Jay PHEE. Capsule endoscopy—A mechatronics perspective[J]. Front Mech Eng, 2011, 6(1): 33-39.
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