Researchers develop 3D-printed brain implant to suppress seizures

Scientists from Germany and the United Kingdom have developed a multifunctional 3D-printed implant prototype designed to treat drug-resistant focal epilepsy. The device, detailed in the journal Advanced Science, combines electrical sensing with targeted thermal suppression to quiet neural activity in specific brain regions.

By utilizing advanced additive manufacturing, the research team—comprising members from the Leibniz Institute of Polymer Research Dresden, TU Dresden, the University of Sheffield, and the University of Limerick—created a compact, 10 x 10 x 3 mm silicone implant. The device features three stacked modules: a bottom layer of composite electrodes for recording electrical activity, a middle layer containing a miniature thermoelectric cooler, and a top layer with fluidic channels to carry heat away from the brain.

In laboratory testing on rats, the implant successfully suppressed seizure-like activity. The researchers noted that using direct ink writing and off-the-shelf components could potentially lower the costs of developing such multi-functional neural interfaces compared to previous bulky and rigid systems.