Design and experiment of intermittent working image capsule endoscopy

Wireless capsule endoscopy (WCE) has been a great breakthrough in visually detecting the pathological changes of gastrointestinal (GI) wall, but the limit of viewing angle and power by batteries still hinder the wide application of WCE. In order to address these shortcomings, a dual-head video capsule system based on new type of receiving coils is presented. First, the dual-head video capsule system is designed, which could capture images of the whole GI tract in two channels, transforming the images into NTSC videos at a frame rate of 30 f s(-1) and transmitting the signals outside the body. Second, the wireless power transmission platform with new type of receiving coils is established to provide at least 108 mW of continuous, stable energy for the capsule. Then a prototype was fabricated and applied in animal experiments. The designed dual-head video capsule system is proved to be feasible and a potential solution for future clinical application.

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Human Gastrointestinal Data Analysis Based on Wavelet Transform-Fractal Algorithm Characterized by Wireless Capsule

Lü

Yan

Zhao

et al. 2015

Biomed. Eng. Appl. Basis Commun.

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Background: Gastrointestinal tract pressure information can reflect the dynamic disorder of gastrointestinal tract physiological and pathological changes, which is important in early diagnosis and treatment of gastrointestinal diseases. However, the rule of human gastrointestinal activities under his normal state is still not clear. The purpose of this paper is to find some rules of gastrointestinal activities using wavelet transform-fractal algorithm and provides a reference for the diagnosis of gastrointestinal disease. Methods: Data from 16 healthy subjects (13 men and three women) aged 18–35 years were analyzed. The key challenges on the data processing were filtering, features extraction, information evaluation and providing the reference conclusion which were resolved by employing wavelet decomposition, fractal algorithm etc. Key Results: About 94% of the subjects gastrointestinal activities follow the rule that the colonic activities in the digestive period are the roughest with the largest box dimension, closely followed by small intestinal activities with gastric activities ranking third with the smallest box dimension, which is never revealed before. Moreover, for the same person the gastrointestinal activities in the digestive period are rougher than in the inter-digestive period, as the box dimension of gastrointestinal activities in the digestive period is larger than in the inter-digestive period. Conclusions and Inferences: The results show that the wavelet transform-fractal algorithm provides a new way to research human gastrointestinal activities.

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Design and experiment of intermittent working image capsule endoscopy

Cited by 3 publications

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Optimization design and experiment of the radio frequency transmission utilized in video capsule endoscope

Optimization design and experiment of the radio frequency transmission utilized in video capsule endoscope

Dual-head wireless powered video capsule based on new type of receiving coils

Human Gastrointestinal Data Analysis Based on Wavelet Transform-Fractal Algorithm Characterized by Wireless Capsule

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