抄録
Transcutaneous energy transmission, using the electromagnetic induction between a primary coil on the body surface and a secondary coil under the skin, is the most promising way to transmit the energy required for operating an implantable artificial heart. An externally-coupled transcutaneous energy transmission system(ECTETS)that the authors have been developing is small and light, and it has been reported that this system exhibits a highly efficient and stable transcutaneous energy transmission performance. Undesired electromagnetic emission during the transcutaneous energy transmission may interfere with a few of the surrounding instruments, and hence the transcutaneous energy transmission systems are required to be electromagnetically compatible. However, the electromagnetic compatibility(EMC)for an implantable artificial heart has not been adequately investigated and evaluated, except for the authors in this research. In this paper, the EMC for the ECTETS embedded in a phantom with electrical properties equivalent to the human body were evaluated based on the regulations established in the International Special Committee for Radio Interference(CISPR)Pub.11. As a result, the radiated emission and the conducted emission from the ECTETS could not satisfy the class B regulation in CISPR Pub.11; however, after a few countermeasures like shielding the cable and the primary coil and inserting a common-mode filter, both the emissions could be reduced within the regulation.
