Wireless powering for a self-propelled and steerable endoscopic capsule for stomach inspection

Carta, Riccardo; Tortora, Giuseppe; Thoné, Jef; Lenaerts, Bert; Valdastri, Pietro; Menciassi, Arianna; Dario, P.; Puers, Robert

doi:10.1016/j.bios.2009.08.049

Cited by 132 publications

(76 citation statements)

References 19 publications

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“…Capsular navigation in the stomach requires 3D steering and locomotion to explore its relative large cavity (approximately 15 cm wide and 30 cm long). 24 To allow for its complete screening, the stomach needs be distended using suitable liquids before the capsule endoscopy procedure. In comparison to the stomach, the small intestine (or the small bowel, luminal diameter of 2.5-3.0 cm) and the large intestine (or the colon, diameter range of 2.5-7.5 cm) have a smaller wall-to-wall distance and a system might utilize a crawling or a corkscrew technique to move.…”

Section: State Of the Art In Research And Developmentmentioning

confidence: 99%

“…A wireless power supply system based on inductive coupling was demonstrated for powering a swimming capsule with motor-based propellers. 24 The capsule included a ferrite core triple-coil assembly and can capture up to 400 mW of power to power the onboard electronics and motors. The authors further describe an optimized power transmission strategy and a rechargeable WCE system capable of delivery 1 W power in 20 min.…”

Section: B5 Inductive Power Transfermentioning

confidence: 99%

“…24,40 It encapsulates a wireless microcontroller, a battery, and a magnetic turn on/off switch. This blind neutralbuoyancy prototype is wirelessly controlled by a joystick input device and can reach speeds of up to 7 cm s…”

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confidence: 99%

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Magnetically guided capsule endoscopy

et al. 2017

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Wireless capsule endoscopy (WCE) is a powerful tool for medical screening and diagnosis, where a small capsule is swallowed and moved by means of natural peristalsis and gravity through the human gastrointestinal (GI) tract. The camera-integrated capsule allows for visualization of the small intestine, a region which was previously inaccessible to classical flexible endoscopy. As a diagnostic tool, it allows to localize the sources of bleedings in the middle part of the gastrointestinal tract and to identify diseases, such as inflammatory bowel disease (Crohn's disease), polyposis syndrome, and tumors. The screening and diagnostic efficacy of the WCE, especially in the stomach region, is hampered by a variety of technical challenges like the lack of active capsular position and orientation control. Therapeutic functionality is absent in most commercial capsules, due to constraints in capsular volume and energy storage. The possibility of using body-exogenous magnetic fields to guide, orient, power, and operate the capsule and its mechanisms has led to increasing research in Magnetically Guided Capsule Endoscopy (MGCE). This work shortly reviews the history and state-of-art in WCE technology. It highlights the magnetic technologies for advancing diagnostic and therapeutic functionalities of WCE. Not restricting itself to the GI tract, the review further investigates the technological developments in magnetically guided microrobots that can navigate through the various air-and fluid-filled lumina and cavities in the body for minimally invasive medicine.

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Section: State Of the Art In Research And Developmentmentioning

confidence: 99%

Section: B5 Inductive Power Transfermentioning

confidence: 99%

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Magnetically guided capsule endoscopy

et al. 2017

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“…Wireless powering solutions have been proposed by other research groups with the aim to continuously provide energy to endoscopic capsules during medical procedures; they exploit inductive coupling between a transmitter coil, external to the body, and a receiver coil, on board the capsule [8,9]. Inductive coupling is in general one of the most suitable methodologies for near field wireless powering transfer [10].…”

Section: Introductionmentioning

confidence: 99%

Inductive-Based Wireless Power Recharging System for an Innovative Endoscopic Capsule

et al. 2015

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Abstract:Wireless capsule endoscopic devices are adopted for painless diagnosis of cancer and other diseases affecting the gastrointestinal tract as an alternative to traditional endoscopy. Although much work has been done to improve capsule performance in terms of active navigation, a major drawback is the limited available energy on board the capsule, usually provided by a battery. Another key shortcoming of active capsules is their limitation in terms of active functionalities and related costs. An inductive-based wireless recharging system for the development of an innovative capsule for colonoscopy is proposed in this paper; the aim is to provide fast off-line battery recovery for improving capsule lifecycle and thus reducing the cost of a single endoscopic procedure. The wireless recharging system has been properly designed to fit the dimensions of a capsule for colonoscopy but it can be applied to any biomedical devices to increase the number of times it can be used after proper sterilization. The current system is able to provide about 1 W power and is able to recharge the battery capsule in 20 min which is a reasonable time considering capsule operation time (10-15 min).

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“…As an effective solution to this problem, wireless power transmission (WPT) system could replace the batteries: human body is placed in the primary coils, VCE is loaded with the secondary coils and driven by inductive energy, which can record video with high resolution and frame rate [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A portable wireless power transmission system for video capsule endoscopes

Yan

Zhu

et al. 2015

BME

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Abstract. Wireless power transmission (WPT) technology can solve the energy shortage problem of the video capsule endoscope (VCE) powered by button batteries, but the fixed platform limited its clinical application. This paper presents a portable WPT system for VCE. Besides portability, power transfer efficiency and stability are considered as the main indexes of optimization design of the system, which consists of the transmitting coil structure, portable control box, operating frequency, magnetic core and winding of receiving coil. Upon the above principles, the correlation parameters are measured, compared and chosen. Finally, through experiments on the platform, the methods are tested and evaluated. In the gastrointestinal tract of small pig, the VCE is supplied with sufficient energy by the WPT system, and the energy conversion efficiency is 2.8%. The video obtained is clear with a resolution of 320×240 and a frame rate of 30 frames per second. The experiments verify the feasibility of design scheme, and further improvement direction is discussed.

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Wireless powering for a self-propelled and steerable endoscopic capsule for stomach inspection

Cited by 132 publications

References 19 publications

Magnetically guided capsule endoscopy

Magnetically guided capsule endoscopy

Inductive-Based Wireless Power Recharging System for an Innovative Endoscopic Capsule

A portable wireless power transmission system for video capsule endoscopes

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