IEEE UFFC Seattle Tech Talk - A 3D printed HIFU transducer for robotic surgery

#ultrasound #seattle #uffc #techtalk

The Seattle Chapter of the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society (UFFC-S) aims to provide UFFC-S members with opportunities for professional and personal growth as well as network with the local, vibrant UFFC community.

Dr. Jack Stevenson, PhD will be our guest speaker. Jack specialises in novel piezoelectric material characterisation techniques for high-power applications as well development of miniaturised devices and additive manufacturing. He is a Product Designer at Nami Surgical (Glasgow, Scotland) where he applies his expertise to the electrical and mechanical design of miniaturised ultrasonic surgical devices. Prior to joining Nami Surgical, Jack completed his PhD and post-doctoral research at the University of Glasgow which involved the design and development of focused ultrasound devices for robotic delivery.

Dr. Stevenson will present on "A 3D printed HIFU transducer for robotic surgery." 

This meeting will be virtual only. 

Dr. Jack Stevenson, PhD of Nami Surgical

Topic:

A 3D printed HIFU transducer for robotic surgery

I will talk about my research on an additively manufactured HIFU device. A Fresnel lens was manufactured in a mSLA printer using a photopolymer selected for enhanced acoustic characteristics (for a polymer). The lens polymers were characterised using the pulse echo technique. A range of active materials were characterised with an impedance analyser and d33 meter. Four piezoelectric materials were then machined to a thickness resonance of 1.5 MHz and paired to a f/1.0 lens with an outer diameter of 25 mm.  The intensity at the focal zone fell short of soft tissue ablation levels with this wide lens, however the platform has shown capabilities in neuromodulation or lower focal number scenarios.

Biography:

 

Jack received a Masters in physics with specialisation in complexity physics from the University of Strathclyde in 2019. Later that year, Jack started as a PhD researcher at the University of Glasgow on the topic of miniaturising a focussed ultrasound transducer for soft tissue ablation. The devices were designed for robotic delivery in laparoscopic procedures and integrated with force feedback. Jack specialises in novel piezoelectric material characterisation techniques for high-power applications, implementation of impedance matching for high-power driving, development of miniaturised devices and additive manufacturing. After graduating from his PhD and two years working as a post-doctorate researcher within the Centre for Medical and Industrial Ultrasonics, Jack joined Nami Surgical as a product designer to apply his expertise to the electrical and mechanical design of miniaturised ultrasonic surgical devices.

 

 

9:00 AM: Welcome and Introductions
9:10 AM: Tech Talk
9:50 AM: Q&A
10:00 AM: Adjourn