title: Capsule Design for Blue Light Therapy against Helicobacter pylori.
abstract: A photo-medical capsule that emits blue light for Helicobacter pylori treatment was described in this paper. The system consists of modules for pH sensing and measuring, light-emitting diode driver circuit, radio communication and microcontroller, and power management. The system can differentiate locations by monitoring the pH values of the gastrointestinal tract, and turn on and off the blue light according to the preset range of pH values. Our experimental tests show that the capsule can operate in the effective light therapy mode for more than 32 minutes and the wireless communication module can reliably transmit the measured pH value to a receiver located outside the body.
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Zhangyong
authors.initials: Z
authors.lastname: Li
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Binbin
authors.initials: B
authors.lastname: Ren
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Tan
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Shengrong
authors.initials: S
authors.lastname: Liu
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Pang
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.
authors.forename: Jinzhao
authors.initials: J
authors.lastname: Lin
authors.affiliation: Research Center of Biomedical Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China.|Department of Physics, the George Washington University, Washington, D. C., United States of America.
authors.forename: Chen
authors.initials: C
authors.lastname: Zeng
mesh_terms: D004566:Electrodes; D004867:Equipment Design; D041981:Gastrointestinal Tract / Q000502:physiology; D016481:Helicobacter Infections / Q000628:therapy*; D016480:Helicobacter pylori / Q000528:radiation effects*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008027:Light; D010789:Phototherapy / Q000295:instrumentation / Q000379:methods*; D059015:Wireless Technology
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