Title :
A 10.5 cm Ultrasound Link for Deep Implanted Medical Devices
Author :
Mazzilli, Francesco ; Lafon, Cyril ; Dehollain, Catherine
Author_Institution :
Dept. of Microsyst. & Microelectron. Eng., Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Abstract :
A study on ultrasound link for wireless energy transmission dedicated to deeply implanted medical devices is presented. The selection of the frequency to avoid biological side effects (e.g., cavitations), the choice of the power amplifier to drive the external transducers and the design of the rectifier to maximize the energy extraction from the implanted transducer are described in details. The link efficiency is characterized in water using a phantom material for a transmitter-receiver distance of 105 mm, transducers active area of 30 mm × 96 mm and 5 mm × 10 mm, respectively, and a system efficiency of 1.6% is measured.
Keywords :
biomedical transducers; biomedical ultrasonics; health care; phantoms; rectifiers; cavitations; deep implanted medical devices; distance 105 mm; frequency selection; phantom material; power amplifier; rectifier design; size 10.5 cm; transducer implant; transmitter-receiver distance; ultrasound link; wireless energy transmission; Acoustic beams; Acoustics; Arrays; Sensors; Transducers; Transponders; Ultrasonic imaging; CMOS; energy harvesting; healthcare; implanted medical device; link efficiency; rectifier; ultrasound;
Journal_Title :
Biomedical Circuits and Systems, IEEE Transactions on
DOI :
10.1109/TBCAS.2013.2295403
