Self-Reinforcing Ionogel Bioadhesive Interface for Robust Integration and Monitoring of Bioelectronic Devices with...

Area of Science:

• Biomaterials Science
• Bioelectronics
• Tissue Engineering

Background:

• Integrating bioelectronic devices with hard tissues like bone and teeth is crucial for advanced diagnostics and therapeutics.
• Achieving stable adhesion in moist, dynamic physiological environments is a significant challenge for current bioadhesives.
• Traditional adhesives often lack the necessary durability and conductivity for reliable bioelectronic interfaces with hard tissues.

Purpose of the Study:

• To develop a self-reinforcing ionogel bioadhesive interface (IGBI) for robust and conductive integration of bioelectronic devices with hard tissues.
• To evaluate the adhesive strength and mechanical self-reinforcement capabilities of the IGBI under physiological conditions.
• To demonstrate the in vivo efficacy of the IGBI in hard tissue repair and enable wireless monitoring of healing.

Main Methods:

• Fabrication of an ionogel bioadhesive interface (IGBI) using silk fibroin and calcium ions.
• Characterization of IGBI adhesion strength (up to 186 J m⁻²) and mechanical self-reinforcement via silk fibroin structural transition.
• In vivo testing in animal models for bone defect repair and tooth reimplantation, coupled with wireless real-time monitoring of bone healing.

Main Results:

• The IGBI demonstrated strong adhesion (186 J m⁻²) and significant mechanical self-reinforcement.
• Successful in vivo application in repairing bone defects and reimplanting teeth.
• Enabled wireless, real-time monitoring of bone regeneration, eliminating the need for secondary surgical removal.

Conclusions:

• The self-reinforcing ionogel bioadhesive interface (IGBI) offers a durable and versatile solution for bioelectronic integration with hard tissues.
• This advanced material overcomes limitations of traditional bioadhesives in challenging physiological environments.
• The IGBI holds significant promise for biomedical applications requiring robust tissue integration and continuous healing monitoring.