A 10.5 cm ultrasound link for deep implanted medical devices.
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.
Francesco
F
Mazzilli
Cyril
C
Lafon
Catherine
C
Dehollain
D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004867:Equipment Design; D006801:Humans; D019047:Phantoms, Imaging; D019736:Prostheses and Implants; D015203:Reproducibility of Results; D012666:Semiconductors; D013686:Telemetry / Q000295:instrumentation*; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation*