Project of a transcutaneous energy transmitter to supply power to ventricular auxiliary device

• Grant number: 11/18341-3
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): December 01, 2011
• Effective date (End): September 30, 2013
• Field of knowledge: Engineering - Electrical Engineering - Electrical, Magnetic and Electronic Circuits
• Principal researcher: Luiz Lebensztajn
• Grantee: Daniela Wolter Ferreira Touma
• Home Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 06/58773-1 - Implantable electromagnetic propulsion systems for uni and biventricular or artifical heart blood circulatory assist devices, AP.TEM
• Associated scholarship(s): 12/06254-1 - Transcutaneous energy transmitter to supply power to ventricular assist devices, BE.EP.DR

Abstract

This project studies a Transcutaneous Energy Transmitter (TET) which uses electromagnetic fields to transfer power from outside the body to an artificial organ in the body. It works like a high frequency transformer whereas the skin is part of the magnetic coupling between the primary (external coil) and secondary (internal coil). Thus, the external coil (transmitter) is excited by an oscillation circuit that transforms the continuous voltage to high frequency alternated voltage and transfers energy to a secondary internal (receiver) containing a coil associated with a rectifier circuit followed by amplifiers and regulators to supply power to the artificial organ and an internal rechargeable battery. In this work, a series of settings TET is studied using the Finite Element Method to simulate the load power, and energy absorption rate (SAR) and induced current in the skin. The collected data is used by the kriging method to create a model, which is used by multiobjective genetic algorithm (MGA) to optimize performance, regulation and SAR. The optimized data is again simulated by Finite Element Method to ensure that the SAR and induced current are within the limits allowed by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FERREIRA, DANIELA W.; LEBENSZTAJN, LUIZ; KRAEHENBUEHL, LAURENT; MOREL, FLORENT; VOLLAIRE, CHRISTIAN. A Design Proposal for Optimal Transcutaneous Energy Transmitters. IEEE Transactions on Magnetics, v. 50, n. 2 FEB 2014. Web of Science Citations: 2.

FERREIRA, DANIELA W.; SABARIEGO, RUTH V.; LEBENSZTAJN, LUIZ; KRAEHENBUEHL, LAURENT; MOREL, FLORENT; VOLLAIRE, CHRISTIAN. Homogenization Methods in Simulations of Transcutaneous Energy Transmitters. IEEE Transactions on Magnetics, v. 50, n. 2 FEB 2014. Web of Science Citations: 4.

MULLER, RENAN BERGONSI; FERREIRA, DANIELA WOLTER; LEBENSZTAJN, LUIZ. Modeling Coreless Transformers With a Relatively Large Wire Gauge Using an Optimization Method. IEEE Transactions on Magnetics, v. 50, n. 2 FEB 2014. Web of Science Citations: 3.

DANIELA WOLTER FERREIRA; LUIZ LEBENSZTAJN. A systematic sensitivity analysis of the performance of a transcutaneous energy transmitter for design purposes. Journal of Microwaves, Optoelectronics and Electromagnetic Applications, v. 12, n. 2 Dec. 2013.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

. Topics in design and analysis of transcutaneous energy transfer to ventricular assist devices.. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Escola Politécnica (EP/BC) São Paulo.