Implantable bioimpedance monitor using ZigBee

Area of Science:

• Biomedical Engineering
• Electrical Impedance Spectroscopy

Background:

• Tissue and organ monitoring is crucial for understanding health and disease.
• Existing methods may lack continuous, long-term monitoring capabilities.
• Engineered cardiac tissue regeneration requires precise viability assessment.

Purpose of the Study:

• To develop a novel implantable bioimpedance monitor.
• To enable wireless, long-term monitoring of engineered cardiac tissue.
• To utilize electrical impedance spectroscopy for viability assessment.

Main Methods:

• Designed an implantable bioimpedance monitor with a ZigBee wireless protocol.
• Implemented data storage for backup and post-link-break download.
• Tested system autonomy with 14 frequencies impedance spectrum acquisition every 5 minutes.

Main Results:

• The debugging prototype demonstrated over 1 month of autonomy.
• The system facilitates telemetric data acquisition and backup storage.
• Current RF link range is limited, necessitating a range extender.

Conclusions:

• The developed implantable bioimpedance monitor shows promise for long-term tissue monitoring.
• Further work is needed to extend the radiofrequency link range.
• This technology can advance the study of engineered tissue in cardiac regeneration.