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A micro ultrasonic scalpel with modified stepped horn
Author(s) -
Kurosawa Minoru,
Umehara Yuji
Publication year - 2012
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.10414
Subject(s) - lead zirconate titanate , french horn , ultrasonic sensor , transducer , materials science , piezoelectricity , acoustics , longitudinal mode , voltage , vibration , ultrasonic motor , biomedical engineering , electrical engineering , optoelectronics , composite material , engineering , dielectric , ferroelectricity , physics , wavelength
A transducer for a micro ultrasonic scalpel has been fabricated. The micro ultrasonic scalpel can be used with an endoscope for a nonabdominal operation or microsurgery, for example, through a microscope. The ultrasonic transducer is 9.8 mm long and 2.7 mm wide and has a stepped horn to amplify the vibration velocity; the tip of the horn is 0.6 mm wide. The scalpel operated at the resonance frequency in the longitudinal mode at 278 kHz. The piezoelectric material was lead zirconate titanate (PZT), which was deposited using the hydrothermal method. The vibration velocity at the tip of the horn in the longitudinal direction was 4.0 m/s, with a 40 Vp‐p driving voltage in both of the side electrodes. To demonstrate the beneficial effect of the scalpel, a cutting test in which the transducer was stuck into pork fat was carried out. © 2012 Wiley Periodicals, Inc. Electron Comm Jpn, 95(8): 44–51, 2012; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/ecj.10414