A Wireless Implant for Gastrointestinal Motility Disorders

Area of Science:

• Biomedical Engineering
• Neuroscience
• Gastroenterology

Background:

• Implantable functional electrical stimulation (IFES) offers therapeutic potential for conditions unresponsive to medication.
• Gastrointestinal (GI) tract modulation via IFES is hindered by the complex gut-brain axis and varied tissue requirements (smooth muscle, skeletal muscle, neurons).
• Existing IFES technologies require distinct design specifications for different tissue types, limiting GI applications.

Purpose of the Study:

• To address the design requirements for an implantable device aimed at treating GI dysmotility.
• To develop and present a miniaturized, wireless implant for simultaneous modulation and recording of GI motility.
• To validate the implant's efficacy through in vivo studies.

Main Methods:

• Development of a miniaturized wireless implant incorporating a custom system-on-a-chip (SoC) and a heterogeneous system-in-a-package (SiP) for enhanced integration.
• Design considerations focused on the unique challenges of activating and monitoring GI smooth muscles and neurons.
• In vivo validation using both rodent and porcine models to assess the implant's functionality and effectiveness in modulating GI motility.

Main Results:

• Successful development of a miniaturized, wireless implantable device for GI motility modulation and recording.
• Demonstration of the implant's capability to both stimulate and record GI electrical activity.
• Positive outcomes in in vivo experiments using rodent and porcine models, confirming the implant's therapeutic potential.

Conclusions:

• The developed miniaturized wireless implant represents a significant advancement in IFES for GI applications.
• The device effectively modulates and records GI motility, offering a potential new treatment for GI dysmotility.
• Further research and clinical translation are warranted based on the promising in vivo results.