New Magnetic Translation/Rotation Drive by Use of Magnetic Particles with Specific Gravity Smaller than a Liquid

Nokata, Makoto

doi:10.5772/50999

Cited by 1 publication

(4 citation statements)

References 13 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, using cross wheels, where the magnetic particles flow into each of the cavities of the cross wheel, pulling it down. A rotating magnetic field will then induce a rolling motion of the cross wheel . The second solution inspired by a water snake toy consists of a cylindrical water balloon (torus‐shaped) filled with magnetic particle suspension.…”

Section: State Of the Art In Research And Developmentmentioning

confidence: 99%

“…Spiral and Hybrid Capsule Designs: (a) First reported spiral robot, Honda et al . (b) Chiba et al., (c) Bo et al., (d) Guo et al., (e) Wang et al., (f) Yim et al., (g) Magnetically controlled crawling movement by Nokata et al …”

Section: State Of the Art In Research And Developmentmentioning

confidence: 99%

“…A rotating magnetic field will then induce a rolling motion of the cross wheel. 149 The second solution inspired by a water snake toy consists of a cylindrical water balloon (torus-shaped) filled with magnetic particle suspension. By magnetically attracting the particles to one end of the cylindrical form, the balloon can deform and push itself through a pipe-like structure like the intestine.…”

Section: B4 Hybrid Locomotion Capsulesmentioning

confidence: 99%

“…148 Nokata from Ritsumeikan University (Japan) introduced a new magnetic translation/rotation drive that is very different from other crawling or swimming motion types. 149 It uses a soft or hard hollow shell that holds a liquid suspension with magnetic nanoparticles. The particles (magnetic iron-oxide) have a specific gravity lower than the liquid (kerosene).…”

Section: B4 Hybrid Locomotion Capsulesmentioning

confidence: 99%

See 3 more Smart Citations

Magnetically guided capsule endoscopy

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

Section: State Of the Art In Research And Developmentmentioning

confidence: 99%