Incorporating Planar Folded Front Masses in Bolted Langevin-Style Transducers for Minimally Invasive Surgery

Chibli, A. H., Li, X. , Fenu, N. , Cochran, S. and Gachagan, A. (2021) Incorporating Planar Folded Front Masses in Bolted Langevin-Style Transducers for Minimally Invasive Surgery. In: IEEE International Ultrasonic Symposium (IUS 2021), Xi'an, China, 11-16 Sep 2021, ISBN 9781665403559 (doi: 10.1109/IUS52206.2021.9593886)

Abstract

The Harmonic ACE® (J and J Medical Devices, OH, USA) based on the conventional Bolted-Langevin Transducer (BLT) configuration of piezoelectric transducers is used in robotic surgery due to its fast cutting of soft tissues and improved cut quality. However, the manoeuvrability of the Harmonic Ace® which is the only ultrasonic scalpel compatible with the Da Vinci Surgical System® (Intuitive Surgical Inc., CA, USA) is very limited for the surgeon, due to its long shaft and tool-robot configuration. Till now, there is no existing ultrasonic scalpel compatible with the Da Vinci® Surgical System EndoWrist® instruments. Therefore, the key objective of this work is to create miniaturised ultrasonic instruments to allow greater dexterity than conventional tools. To address this, an alternative approach can be adopted which utilises a planar folded front mass incorporated within BLT configurations with the aim to reduce the overall length of the tool whilst maintaining the amplification gain. The introduction of planar folded (PF) and twice planar folded (TPF) front masses within BLT configurations and after being optimised using design of experiments (DOE) techniques, demonstrate high amplification gains, GA = 90 @ 23 kHz and GA = 92 @ 21 kHz, respectively, and transducer lengths of 58 mm (87% length reduction) and 64 mm (86% length reduction) compared with a 450 mm Harmonic ACE®.

• Item Type: Conference Proceedings
• Additional Information: This work was supported by Ultrasurge, Surgery Enabled by Ultrasonics, funded by the Engineering and Physical Sciences Research Council (EPSRC), EP/R045291/1. Abdul Hadi Chibli sponsored by EPSRC/ Centre for Doctoral Training in Future Ultrasonic Engineering. Award No: EP/S008853/1
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Li, Dr Xuan and Gachagan, Dr Anthony and Cochran, Professor Sandy and Fenu, Dr Nicola and Chibli, Mr Abdul Hadi
• Authors: Chibli, A. H., Li, X., Fenu, N., Cochran, S., and Gachagan, A.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• ISSN: 1948-5727
• ISBN: 9781665403559
• Published Online: 15 November 2021
• Copyright Holders: Copyright © 2021 IEEE
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
300671		Surgery enabled by ultrasonics	Margaret Lucas	Engineering and Physical Sciences Research Council (EPSRC)	EP/R045291/1	ENG - Systems Power & Energy