Development of Transcutaneous Temperature Control System for Implantable Devices

In this work, a small inductor using magnetic property depending on temperature, and transcutaneous temperature control system was proposed. The artificial anal sphincter is actuated by flexible heaters attached to SMA, then opens anal canal. The purpose of this study is to propose the simple system of artificial sphincters controlled its temperature by the inductor consisting of Ni-Cu-Zn based thermosensitive magnetic ferrite. In this paper, a prototype of thermosensitive inductor is designed for evaluations, and tested it to confirm the temperature controllability in order to prevent the SMA from overheating.