心臓ペースメーカー用経皮的電力伝送コイルの設計に関する考察(磁気応用)

概要

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Ordinarily whenever the battery is drained, the entire implanted device using the battery is changed. It is possible to extend the life of an implanted device by using a primary battery plus a secondary rechargeable battery. For example, a rechargeable cardiac pacemaker is covered with a titanium case. The secondary rechargeable battery is charged from the outside of the body. The titanium case, however has a negative effect on transmission efficiency. In this study, we designed transmission coils considering circuit parameters and coil shapes. The proposed secondary coil is located within the inner wall of the titanium case. The primary coil has a spiral shape, with a constant outside diameter of 80 mm. We compared transmission efficiency for various inside diameters. The experiment results, we show that when the secondary coil is covered with a titanium case, the best inside diameter for the primary coil is 28 mm. If the coil gap is 20 mm, the transmission efficiency is 22%.
社団法人日本磁気学会の論文
2003-04-01