A flexible, stretchable system for simultaneous acoustic energy transfer and communication

Area of Science:

• Biomedical Engineering
• Flexible Electronics
• Implantable Medical Devices

Background:

• Implantable medical devices like pacemakers have limited battery life, necessitating risky replacement surgeries.
• Current devices are often rigid and bulky, causing patient discomfort.
• There is a need for improved, long-lasting, and patient-friendly implantable technologies.

Purpose of the Study:

• To develop a thin, flexible, battery-free implantable system.
• To enable wireless recharging and communication using ultrasound.
• To demonstrate the device's capability for physiological monitoring and cardiac pacing.

Main Methods:

• Development of a flexible electronic system for implantable applications.
• Implementation of simultaneous wireless power transfer and data communication via ultrasound.
• In vivo testing on an animal cardiac arrest model.

Main Results:

• The system successfully performed wireless recharging and communication using ultrasound.
• The device automatically detected abnormal heartbeats in the animal model.
• Electrical stimulation was delivered to the heart, demonstrating pacing functionality.

Conclusions:

• The developed flexible, battery-free system offers a promising alternative to traditional implantable devices.
• Ultrasound-based wireless power and communication are viable for implantable systems.
• The technology shows potential for emergent cardiac treatment and improved patient outcomes.