The "Medical Physics" journal published an article "Magnetically Guided Capsule Endoscopy", dedicated to the wireless capsule - a new powerful tool for medical diagnostics used in endoscopy.
This direction is actively developed by LLC "Farmag" (AMT&C Group). The current model of the magnetic system for controlling the endoscopic capsule was demonstrated at the exhibition "Healthcare-2016".
You can read the article in the "Wiley" online library or download PDF-версию.