A novel holding mechanism for next generation active wireless capsule endoscopy

Area of Science:

• Biomedical Engineering
• Medical Devices
• Microsystems Engineering

Background:

• Current wireless capsule endoscopy (WCE) systems are primarily passive, limiting their functional capabilities.
• Future WCE technology aims to integrate active mechanical components for advanced in-vivo procedures.

Purpose of the Study:

• To propose and detail a novel, ultra-compact integrated mechanism for active WCE systems.
• To demonstrate the feasibility of fabricating this mechanism using conventional manufacturing processes.

Main Methods:

• Design and fabrication of an ultra-compact mechanism for resisting peristalsis in WCE.
• Utilizing Nylon 6 material and CNC milling for fabrication.
• Integration of micro-actuators for active control and functionality.

Main Results:

• A novel mechanism occupying only 347.0mm³ was developed to resist peristalsis.
• The mechanism extends an "anchor" with an effective 60.4mm circumference for an 11.0mm diameter WCE.
• Demonstrated the use of conventional CNC milling for fabricating complex micro-mechanisms.

Conclusions:

• Conventional manufacturing processes can enable radical advancements in WCE capabilities.
• The developed mechanism paves the way for next-generation active WCE devices.
• Future active WCE systems can perform functions such as micro-surgery, tissue sampling, and targeted drug delivery.