3D Mesoporous Electrodes Integrated with Soft Surgical Robotics for Putative Minimally Invasive Intraoperative Tumor...

Area of Science:

• Biomedical Engineering
• Materials Science
• Robotics

Background:

• Flexible endoscopes with multimodal sensors offer advanced minimally invasive surgery (MIS) capabilities.
• Existing tactile sensors detect mechanical differences in malignancy late-stage.
• Sensing electrical properties like bioelectrical impedance offers better tissue abnormality detection.

Purpose of the Study:

• To develop and evaluate 3D conformal mesoporous gold (mAu) sensors for enhanced impedance sensing in MIS.
• To address challenges in integrating impedance sensors with soft medical robots.
• To improve early detection of tissue malignancy using electrical properties.

Main Methods:

• Fabrication of 3D conformal electronic devices using mesoporous gold (mAu) sensors.
• Integration of top-down lithography, bottom-up electrochemical deposition, and liquid-assisted transfer printing.
• In vitro human tissue studies to assess sensor performance.

Main Results:

• The mAu electrode platform showed 2.5 times higher impedance sensitivity compared to flat gold.
• The 3D configuration enabled multi-sided tissue impedance measurements for improved navigation.
• Sensors successfully distinguished cancerous from healthy tissues in in vitro studies.

Conclusions:

• 3D conformal mesoporous electronics show significant potential for advanced soft robot-assisted MIS.
• The developed sensors enhance in situ diagnosis in hard-to-reach areas.
• This technology could revolutionize early cancer detection and monitoring during surgery.