The unparalleled motion and manipulation abilities of soft-bodied animals such as the octopus have intrigued biologists for many years. How can an animal that has no bones transform its tentacles from a soft state to a one stiff enough to catch and even kill prey?
A group of scientists and engineers has attempted to answer this question in order to replicate the abilities of an octopus tentacle in a robotic surgical tool. Last week, members of this EU-funded project known as STIFF-FLOP (STIFFness controllable Flexible and Learnable manipulator for surgical OPerations) unveiled the group’s latest efforts.
Conventional surgical robots are based on structures made from rigid linked components. This means they can only reach sites inside a patient’s abdomen by moving along straight lines and cannot navigate around organs that may be in the way. It also means they risk damaging healthy tissue during an operation.