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Biomimetic Octopus Suction Cup with Attachment Force Self-Sensing Capability for Cardiac Adhesion
Ziwei Wang1,2, Guangkai Sun1,2, Xinwei Fan1,2
1Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science & Technology University, Beijing, China.
Soft Robotics
|July 9, 2024
Summary
This study introduces a biomimetic octopus suction device with self-sensing capabilities for safer cardiac surgeries. It uses integrated sensors and an advanced algorithm to precisely control adhesion, reducing tissue damage.
Area of Science:
- Biomimetics and Soft Robotics
- Medical Device Engineering
- Surgical Technology
Background:
- Cardiac surgeries require precise tissue manipulation and safe adhesion.
- Existing methods lack real-time feedback on adhesion force, increasing risk of tissue damage.
- Octopus suckers offer inspiration for advanced adhesion and sensing mechanisms.
Purpose of the Study:
- To develop a biomimetic soft suction device inspired by octopuses for cardiac surgery.
- To integrate self-sensing capabilities for real-time monitoring of adhesion force.
- To enhance precision and safety in cardiac surgical procedures through intelligent attachment.
Main Methods:
- Fabrication of soft suction cups with integrated thin-film pressure sensors.
- Emulation of octopus sucker tactile sensing for real-time environmental feedback.
- Utilizing the grey wolf optimizer-back propagation (GWO-BP) algorithm for signal processing and adhesion prediction.
- Experimental validation including compression pull-off tests and biological tissue trials.
Main Results:
- The biomimetic suction device provides real-time feedback on adhesion state.
- The GWO-BP algorithm accurately predicts suction cup adhesion force with <0.97% error.
- Mean prediction time for adhesion force is as low as 0.0027 s.
- Successful determination of optimal sensor embedding locations through foundational experiments.
Conclusions:
- The developed self-sensing biomimetic suction device enhances intelligent monitoring and attachment assurance in cardiac surgery.
- This technology significantly reduces the probability of cardiac tissue damage.
- Future applications include integration into intelligent biomimetic adhesive soft robotics for advanced surgical interventions.
