DocumentCode :
2522155
Title :
Magnetic actuation and guidance mechanism for active capsule endoscope
Author :
Wang, Xiaona ; Meng, Max Q H
Author_Institution :
Chinese Univ. of Hong Kong, Shatin
fYear :
2007
fDate :
4-7 Sept. 2007
Firstpage :
1
Lastpage :
6
Abstract :
We propose a magnetic actuation and guidance mechanism for design of an active capsule endoscope. A permanent magnet acts as a seed, which is actuated and guided by multiple coils placed outside the human body. The basic idea is that the magnetic seed is subject to a force and a torque in a magnetic field. An efficient computation scheme is designed and implemented to calculate the coil currents for real-time actuation. Simulations are performed on a six-coil actuation system to evaluate the method. As an alternative method, an internal actuator consisting of a permanent magnet and a solenoid, which can propel itself forward under an alternating current, is introduced to increase the mobility of the capsule and decrease the demand for a strong external field. The external guiding magnetic field is also simulated to orient the internal actuator.
Keywords :
electromagnetic actuators; endoscopes; medical control systems; microactuators; active capsule endoscope; guidance mechanism; magnetic actuation; permanent magnet; six-coil actuation system; solenoid; Actuators; Biological system modeling; Coils; Computational modeling; Endoscopes; Humans; Magnetic fields; Performance evaluation; Permanent magnets; Torque;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Advanced intelligent mechatronics, 2007 IEEE/ASME international conference on
Conference_Location :
Zurich
Print_ISBN :
978-1-4244-1263-1
Electronic_ISBN :
978-1-4244-1264-8
Type :
conf
DOI :
10.1109/AIM.2007.4412521
Filename :
4412521
Link To Document :
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