Energy Requirement and Energy Management for an Active Implant

Inhalt:
The development of active implants with high energy demands is a challenge. In this work the energy requirement of an implantable mandibular distraction device for so-called osteogenesis is investigated by considering individueál energy consuming components. Inductive wireless energy transmission via small implantable transmitter and receiver coils is tested to minimize the total implant size. An appropriate energy management system for the mandibular distraction device is proposed with a combination of a small, implanted battery and inductive wireless energy transfer to provide energy during the active distraction and make the implant usage comfortable for the patient. Based on energy transmission tests, a daily charging time of typically 3-4 h divided into four charging cycles for the mandibular distractor can be archived.