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Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument

Our developed wire ultrasound surgical instrument comprises a bolt-clamped Langevin ultrasonic transducer (BLUT) fabricated by PMN-PZT single crystal material due to high mechanical quality factor and electromechanical coupling coefficient, a waveguide in the handheld instrument, and a generator ins...

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Autores principales: Kim, Jungsuk, Kim, Kyeongjin, Choe, Sun-Ho, Choi, Hojong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7309115/
https://www.ncbi.nlm.nih.gov/pubmed/32481729
http://dx.doi.org/10.3390/s20113059
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author Kim, Jungsuk
Kim, Kyeongjin
Choe, Sun-Ho
Choi, Hojong
author_facet Kim, Jungsuk
Kim, Kyeongjin
Choe, Sun-Ho
Choi, Hojong
author_sort Kim, Jungsuk
collection PubMed
description Our developed wire ultrasound surgical instrument comprises a bolt-clamped Langevin ultrasonic transducer (BLUT) fabricated by PMN-PZT single crystal material due to high mechanical quality factor and electromechanical coupling coefficient, a waveguide in the handheld instrument, and a generator instrument. To ensure high performance of wire ultrasound surgical instruments, the BLUT should vibrate at an accurate frequency because the BLUT’s frequency influences hemostasis and the effects of incisions on blood vessels and tissues. Therefore, we implemented a BLUT with a waveguide in the handheld instrument using a developed assembly jig process with impedance and network analyzers that can accurately control the compression force using a digital torque wrench. A generator instrument having a main control circuit with a low error rate, that is, an output frequency error rate within ±0.5% and an output voltage error rate within ±1.6%, was developed to generate the accurate frequency of the BLUT in the handheld instrument. In addition, a matching circuit between the BLUT and generator instrument with a network analyzer was developed to transfer displacement vibration efficiently from the handheld instrument to the end of the waveguide. Using the matching circuit, the measured S-parameter value of the generator instrument using a network analyzer was −24.3 dB at the resonant frequency. Thus, our proposed scheme can improve the vibration amplitude and accuracy of frequency control of the wire ultrasound surgical instrument due to developed PMN-PZT material and assembly jig process.
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spelling pubmed-73091152020-06-25 Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument Kim, Jungsuk Kim, Kyeongjin Choe, Sun-Ho Choi, Hojong Sensors (Basel) Article Our developed wire ultrasound surgical instrument comprises a bolt-clamped Langevin ultrasonic transducer (BLUT) fabricated by PMN-PZT single crystal material due to high mechanical quality factor and electromechanical coupling coefficient, a waveguide in the handheld instrument, and a generator instrument. To ensure high performance of wire ultrasound surgical instruments, the BLUT should vibrate at an accurate frequency because the BLUT’s frequency influences hemostasis and the effects of incisions on blood vessels and tissues. Therefore, we implemented a BLUT with a waveguide in the handheld instrument using a developed assembly jig process with impedance and network analyzers that can accurately control the compression force using a digital torque wrench. A generator instrument having a main control circuit with a low error rate, that is, an output frequency error rate within ±0.5% and an output voltage error rate within ±1.6%, was developed to generate the accurate frequency of the BLUT in the handheld instrument. In addition, a matching circuit between the BLUT and generator instrument with a network analyzer was developed to transfer displacement vibration efficiently from the handheld instrument to the end of the waveguide. Using the matching circuit, the measured S-parameter value of the generator instrument using a network analyzer was −24.3 dB at the resonant frequency. Thus, our proposed scheme can improve the vibration amplitude and accuracy of frequency control of the wire ultrasound surgical instrument due to developed PMN-PZT material and assembly jig process. MDPI 2020-05-28 /pmc/articles/PMC7309115/ /pubmed/32481729 http://dx.doi.org/10.3390/s20113059 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Jungsuk
Kim, Kyeongjin
Choe, Sun-Ho
Choi, Hojong
Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
title Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
title_full Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
title_fullStr Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
title_full_unstemmed Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
title_short Development of an Accurate Resonant Frequency Controlled Wire Ultrasound Surgical Instrument
title_sort development of an accurate resonant frequency controlled wire ultrasound surgical instrument
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7309115/
https://www.ncbi.nlm.nih.gov/pubmed/32481729
http://dx.doi.org/10.3390/s20113059
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