Signal transmission for implantable medical devices using figure-of-eight coils

H. Matsuki, K. Ofuji, N. Chubachi, S. Nitta

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


A new skin-transparent signal transmission method is proposed. For applications on high energy-consumption medical devices such as total artificial hearts or implantable FES (Functional Electrical Stimulation) systems, we constructed a transcutaneous signal transmission system using figure-of-eight coils, as it is apparent that these applications need feedback and/or controlling signals for stable and safe opration. By employing figure-of-eight coils, we could reduce noise coming from around the coil and still suppress noise emitted from the transmitting coil. In the animal experiment using a goat, we could successfully observe the fluctuation in the amount of the transmitted energy through skin with figure-of-eight coils of 30mm in diameter. Meanwhile, figure-of-eight coils didn't cause any unfavorble interferances with the electromagnetically driven ventricular assist device connected to the goat's heart at the time.

Original languageEnglish
Pages (from-to)5121-5123
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 PART 2
Publication statusPublished - 1996


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