One of the challenges of minimally invasive laparoscopic surgery lies in getting surgical instruments into the patient’s body via a narrow catheter. Scientists have set about addressing that problem, with magnetic instruments that pop into and out of shape as needed.
The experimental MaSoChain (magnetic soft-robotic chain) system was developed at Switzerland’s ETH Zurich research institute, by a team led by doctoral student Hongri Gu. He is now a postdoc at the University of Konstanz.
In a nutshell, MaSoChain incorporates 3D-printed surgical instruments made up of small rigid polymer segments linked by flexible elastic connectors. Each segment has a tiny strategically placed magnet inside. When inserted into a catheter, the components all sit end-to-end in a row, “like a string of pearls.”
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