Bioresorbable silicon electronic sensors for the brain

Area of Science:

• Biomaterials Science
• Medical Device Engineering
• Neurotechnology

Background:

• Permanent electronic implants are crucial in medicine but pose risks of infection and require surgical removal.
• Bacterial biofilms on implants can lead to serious health complications and necessitate re-operation.

Purpose of the Study:

• To develop implantable electronic sensors made entirely from resorbable materials.
• To demonstrate the functionality and safety of these biodegradable sensors in vivo.
• To eliminate the need for surgical retrieval of electronic implants.

Main Methods:

• Fabrication of multifunctional silicon sensors using hydrolytically and metabolically resorbable materials.
• In vivo testing in rat models for monitoring intracranial pressure and temperature.
• Integration with wireless data transmission systems, including partially resorbable communication modules.

Main Results:

• Demonstrated successful in vivo monitoring of intracranial pressure and temperature with resorbable sensors.
• Achieved measurement performance comparable to non-resorbable clinical standards.
• Proved the principle of percutaneous-free data communication with implanted, partially resorbable systems.

Conclusions:

• Fully resorbable electronic sensors offer a promising alternative to permanent implants, mitigating risks of infection and complications.
• These biodegradable devices can be adapted for various physiological monitoring applications throughout the body.
• The technology eliminates the need for surgical explantation, improving patient outcomes and reducing healthcare burdens.