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A novel low temperature transcutaneous energy transfer system suitable for high power implantable medical devices: performance and validation in sheep

Dissanayakee, T.F.; Budgett, D.M.; Hu, P.; Bennet, L.; Pyner, S.; Booth, L.; Amirapu, S.; Wu, Y.; Malpas, S.C.

Authors

T.F. Dissanayakee

D.M. Budgett

P. Hu

L. Bennet

L. Booth

S. Amirapu

Y. Wu

S.C. Malpas



Abstract

Transcutaneous energy transfer (TET) systems use magnetic fields to transfer power across the skin without direct electrical connectivity. This offers the prospect of lifetime operation and overcomes risk of infection associated with wires passing through the skin. Previous attempts at this technology have not proved suitable due to poor efficiency, large size, or tissue damage. We have developed a novel approach utilizing frequency control that allows for wide tolerance in the alignment between internal and external coils for coupling variations of 10 to 20 mm, and relatively small size (50 mm diameter, 5 mm thickness). Using a sheep experimental model, the secondary coil was implanted under the skin in six sheep, and the system was operated to deliver a stable power output to a 15 W load continuously over 4 weeks. The maximum surface temperature of the secondary coil increased by a mean value of 3.4

Citation

Dissanayakee, T., Budgett, D., Hu, P., Bennet, L., Pyner, S., Booth, L., …Malpas, S. (2010). A novel low temperature transcutaneous energy transfer system suitable for high power implantable medical devices: performance and validation in sheep. Artificial Organs, 34(5), E160-E167. https://doi.org/10.1111/j.1525-1594.2009.00992.x

Journal Article Type Article
Publication Date May 1, 2010
Deposit Date Oct 17, 2010
Journal Artificial Organs
Print ISSN 0160-564X
Electronic ISSN 1525-1594
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 34
Issue 5
Pages E160-E167
DOI https://doi.org/10.1111/j.1525-1594.2009.00992.x
Keywords Artificial hearts, Inductive power, Magnetic field, Transcutaneous energy transfer, Ventricular assist device, Wireless power.


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