title: [A wireless power transmission system for capsule endoscope].
abstract: In order to deliver power to the capsule endoscope, whose position and orientation are always changing when traveling along the alimentary tract, a wireless power transmission system based on electromagnetic coupling was proposed. The system is composed of Helmholtz transmitting coil and three-dimensional receiving coil. Helmholtz coil outside the body generates a uniform magnetic field covering the whole alimentary tract; three-dimensional coil inside retrieves stable power regardless of its position and orientation. The transmitter and receiver were designed and implemented, and the experiments validated the feasibility of the system. The results show that at least 320 mW of usable power can be transmitted to capsule endoscope when its position and orientation are changing at random and the transmitting power is 25W.
authors.affiliation: Medical Precision Engineering &Intelligent System Lab, Shanghai Jiaotong University, Shanghai 200240, China.
authors.forename: Wenhui
authors.initials: W
authors.lastname: Xin
authors.forename: Guozheng
authors.initials: G
authors.lastname: Yan
authors.forename: Wenxing
authors.initials: W
authors.lastname: Wang
mesh_terms: D053705:Capsule Endoscopes; D053704:Capsule Endoscopy / Q000295:instrumentation*; D004553:Electric Conductivity; D011211:Electric Power Supplies; D004574:Electromagnetic Fields; D004867:Equipment Design; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D006801:Humans