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Wireless Implant That Auto-Delivers Emergency Hormones Proves Durable in Mice, Targets Clinical Trials

Researchers are optimizing the device’s longevity ahead of human clinical trials planned within three years.

A new implantable device carries a reservoir of glucagon that can be stored under the skin and could save diabetes patients from dangerously low blood sugar.

Overview

  • The quarter-sized implant houses powdered glucagon and epinephrine in a 3D-printed polymer reservoir sealed by a shape-memory nickel-titanium alloy.
  • When remotely triggered, glucagon release restored diabetic mice’s blood sugar to normal levels within ten minutes, and epinephrine delivery elevated heart rate in the same timeframe.
  • Biocompatibility tests showed the device remained fully functional under fibrotic tissue for four weeks without loss of performance.
  • A built-in radiofrequency antenna enables wireless activation by external signals or integration with continuous glucose monitors for automatic emergency response.
  • The MIT team is conducting additional studies to extend implant lifespan and expects to begin human clinical trials within three years.