Shape Memory Polymer-Based Insertable Electrode Array Towards Minimally Invasive Subdural Implantation

Minimally invasive implantation of subdural electrodes can dramatically benefit the patients with various neurological diseases. In modern clinical practice, procedure electrode arrays remains traumatic for and increases postoperative infection risk. Here we report a design insertion technique thermally activated shape-memory polymer-based array that recover up to ten times length deformation. The compressed four-centimeter wide be easily packed into three-millimeter diameter tube subsequently deployed thought five-millimeter opening in restricted space between brain phantom simulated skull. mechanical properties developed are comparable materials traditionally employed purpose, electrical signal recording preserved after shape deformation recovery. Additionally, is biocompatible exhibits conformability curvy surface. results demonstrate through small hole similar cavity possible, which may inspire future solution minimal suffering from epilepsy, amyotrophic lateral sclerosis or tetraplegia.