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Related Concept Videos

Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

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Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
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Endoscopic Procedures V: ERCP01:26

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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
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Autonomous and Rechargeable Microneurostimulator Endoscopically Implantable into the Submucosa
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Wireless power transmission in endoscopy capsules.

Michael Kühne1, Wilfried Andrä1, Christoph Werner1

  • 1Department of Biomedical Engineering, University of Applied Sciences, 07745 Jena, Germany.

Biomedizinische Technik. Biomedical Engineering
|December 1, 2019
PubMed
Summary

Wireless power transmission overcomes endoscopy capsule battery limits. A novel magnetic system provides ample power, enabling prolonged capsule operation for better gastrointestinal diagnostics.

Keywords:
contactless torque transmissionmagnetic sphererotating magnetic field

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Area of Science:

  • Biomedical Engineering
  • Medical Devices
  • Gastroenterology

Background:

  • Endoscopy capsule operating life is restricted by battery capacity, often insufficient for complete gastrointestinal transit.
  • Current battery technology limits diagnostic procedures and patient convenience.

Purpose of the Study:

  • To develop and evaluate a novel wireless power transmission system for endoscopy capsules.
  • To overcome the limitations of onboard batteries and extend capsule operating time.

Main Methods:

  • A rotating magnetic field was generated externally using a permanent magnetic cylinder and electric motor.
  • This field induced synchronous rotation of a permanent magnetic sphere within the capsule, powering internal coils.
  • The system delivered power wirelessly to the capsule's electronics.

Main Results:

  • The wireless power transmission system successfully delivered up to 170 mW of power.
  • This output exceeds the 100 mW minimum required for current endoscopy capsule electronics.
  • The components (sphere and coil) occupy less volume than existing batteries.

Conclusions:

  • This wireless power solution effectively extends endoscopy capsule operating time.
  • The system offers a pathway to arbitrary operational durations, enhancing diagnostic capabilities.
  • This technology represents a significant advancement in capsule endoscopy.