Electricity-Free Soft Robot Set to Boost Surgical Precision

Image credit: UNSW/Dr Thanh Nho Do

A new hydraulic system from engineers in Australia is poised to simplify complex endovascular procedures, by providing precise control over a small robotic probe.

A team from the UNSW Medical Robotics Lab, led by Dr Thanh Nho Do, has developed an innovative soft robotic system that operates without electricity or motors, offering the potential for enhanced surgical precision at reduced cost.

The Soft Fibrous Syringe Architecture (SFSA) prototype utilises hydraulics to manoeuvre ‘artificial muscles’, allowing a flexible robotic arm to move in any direction.

An anticipated application for the technology is in the control of microcatheters used in intricate endovascular procedures.

The SFSA, detailed in a paper recently published in Advanced Science, also incorporates built-in sensing capabilities which can detect force and surface texture – enabling clinicians to more effectively identify and treat abnormal cells, like tumours.

“Unlike traditional methods that use complicated parts like electric motors, microcontrollers, valves, and rigid pumps, SFSA uses a simple mechanical system that doesn’t need electricity or motors,” said lead researcher, Dr Do.

“The SFSA solves many problems in flexible robotic systems by removing the need for complex controllers, electronics, and large power sources, as well as cutting out extra sensors.”

Researchers caveat that further development is required before the new system can be deployed in real-world cases, including further refining materials and design.

For further information, check out this story from UNSW or refer to the paper published in Advanced Science.