Bone Cutting Performance of Ultrasonic Surgical Tools Incorporating PZT Piezoceramic and Mn:PINPMN-PT piezocrystal

Li, X. , Fenu, N. G. , Cochran, S. and Lucas, M. (2022) Bone Cutting Performance of Ultrasonic Surgical Tools Incorporating PZT Piezoceramic and Mn:PINPMN-PT piezocrystal. In: 2022 IEEE International Ultrasonics Symposium (IUS), Venice, Italy, 10-13 October 2022, ISBN 9781665478137 (doi: 10.1109/IUS54386.2022.9958623)

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Bolted Langevin-style Transducers (BLT) are widely adopted in ultrasonic surgical devices. A BLT is normally comprised of a stack of piezoelectric Pb(Zrx Ti 1 -x)O 3 (PZT) rings. Recently, piezoelectric single crystal material Mn-doped Pb(In 1/2 Nb 1/2 )O 3 - Pb(Mg 1/3 Nb 2/3 )O 3 - PbTiO 3 (Mn:PIN-PMN-PT) has emerged as a potential alternative, as it simultaneously exhibits high piezoelectric coefficient, dij, electromechanical coupling coefficient, kij, and mechanical quality factor, Qm. A stepped shape horn with a thin and rounded blade is attached to two BLTs, one incorporating piezoceramic and one incorporating piezocrystal material. The full devices were tuned to L2 at 20 kHz. Ex-vivo tissue cutting experimental results show that the Mn:PIN-PMN-PT driven surgical device has consumed more power and has successfully penetrated through the bone. However, the impedance matched PZT device has lost stability as the penetration progressed. This distinction is ascribed to the higher power density of the piezocrystal material.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Cochran, Professor Sandy and Fenu, Dr Nicola and Lucas, Professor Margaret and Li, Dr Xuan
Authors: Li, X., Fenu, N. G., Cochran, S., and Lucas, M.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Copyright Holders:Copyright © 2022 IEEE
First Published:First published in Proceedings of the 2022 IEEE International Ultrasonics Symposium (IUS)
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
300671Surgery enabled by ultrasonicsMargaret LucasEngineering and Physical Sciences Research Council (EPSRC)EP/R045291/1ENG - Systems Power & Energy