DocumentCode :
934344
Title :
Controlled Navigation of Endoscopic Capsules: Concept and Preliminary Experimental Investigations
Author :
Carpi, Federico ; Galbiati, Stefano ; Carpi, Angelo
Author_Institution :
Univ. of Pisa, Pisa
Volume :
54
Issue :
11
fYear :
2007
Firstpage :
2028
Lastpage :
2036
Abstract :
This paper describes a technique to control the navigation of traditional wireless endoscopic capsules and reports preliminary proof-of-concept investigations. These capsules are used for noninvasive explorations of the digestive tube. At present, their motion cannot be controlled and they proceed by means of the visceral peristalsis. In order to enable motion controls, the technique proposed here adopts magnetic shells which are to be applied to available capsules, immediately before their use. The shells are used to control the capsule movement by means of external magnetic fields. This solution is readily applicable to any endoscopic capsule, avoiding internal modifications. Prototype elastic shells made of silicone elastomers mixed with magnetic particles were fabricated. They were tested with the most diffused capsule (model M2A, Given Imaging Ltd., Yoqneam, Israel), by studying the performance of the capsule/shell complex in simplified experimental conditions. Bench tests permitted to demonstrate controlled translations, rotations, and rototranslations of the capsule/shell complex within tubular structures coated with pieces of bovine tissues. The use of a new instrumentation, recently developed for cardiovascular treatments, is proposed as a potential means enabling the application of controlled magnetic fields for intrabody navigations.
Keywords :
biological tissues; biomagnetism; cardiovascular system; endoscopes; magnetic particles; motion control; patient treatment; bovine tissues; cardiovascular treatments; controlled navigation; elastic shells; intrabody navigations; magnetic particles; magnetic shells; motion controls; noninvasive digestive tube explorations; rotations; rototranslations; silicone elastomers; translations; visceral peristalsis; wireless endoscopic capsules; Bovine; Cardiology; Instruments; Magnetic fields; Magnetic particles; Magnetoelasticity; Motion control; Navigation; Prototypes; Testing; Capsule; endoscope; endoscopic; endoscopy; magnetic; motion control; navigation; wireless; Capsule Endoscopes; Capsule Endoscopy; Equipment Design; Equipment Failure Analysis; Image Enhancement; Magnetics; Micromanipulation; Motion; Pilot Projects;
fLanguage :
English
Journal_Title :
Biomedical Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9294
Type :
jour
DOI :
10.1109/TBME.2007.894729
Filename :
4352049
Link To Document :
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