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- W4310584032 abstract "Ultrasonically actuated robotic scalpels have been increasingly adopted in surgery as they offer reduced bleeding and heat injuries. However, due to their long sonotrodes and high shaft operating temperatures, which could result in shearing effects, current designs are challenging to operate and manoeuvre intracorporeally. Assisted surgical platforms, such as the Da Vinci <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>®</sup> system (Intuitive Surgical, CA, USA), have their own advanced instruments that allow 7 degrees of freedom in manoeuvrability and small incisions inside the body, shortening the recovery time for patients. These instruments currently are incompatible with ultrasonically actuated surgical scalpels, as there are no ultrasonically actuated devices sufficiently small to be articulated within them. The key objective of this work is to explore miniaturisation of suitable power ultrasonic transducers by incorporating a novel twice planar folded (TPF) front mass within the conventional bolted-Langevin transducer (BLT) configuration, specifically in this paper by incorporating stainless steel and titanium back masses. Two transducers were designed with TPF front masses and different length stainless-steel and titanium back masses to maintain the resonance frequency around 20 kHz. The stainless-steel back mass has a length of 30.5 mm including the bolt insertion hole and the titanium back mass has a length of 37.5 mm including the bolt insertion hole. The normal-to-surface responses of both transducers, associated with the longitudinal response for each, were experimentally measured. They showed the transducer with the titanium back mass has a vibrational amplitude of 42 µm and the transducer with the stainless-steel back mass has a vibrational amplitude of 38 µm. Harmonic analysis tests have been performed on both transducers, where the stainless-steel transducer had a frequency shift of 55 Hz with clearer softening effects than the titanium transducer, which had a frequency shift of 150 Hz." @default.
- W4310584032 created "2022-12-12" @default.
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- W4310584032 date "2022-10-10" @default.
- W4310584032 modified "2023-10-06" @default.
- W4310584032 title "Incorporating stainless steel and titanium back masses in twice planar folded ultrasonic scalpels for robotic surgery" @default.
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- W4310584032 doi "https://doi.org/10.1109/ius54386.2022.9957398" @default.
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