Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
권호 표지
DOI QR코드

DOI QR Code

Classification of Organs Using Impedance of Ultrasonic Surgical Knife to improve Surgical Efficiency

초음파 수술기의 수술 효율성 향상을 위한 진동자 임피던스 측정에 따른 조직 분류 연구

  • Kim, Hong Rae (Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center) ;
  • Kim, Sung Chun (Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center) ;
  • Kim, Kwang Gi (Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center) ;
  • Kim, Young-Woo (Gastric Branch, Research Institute & Hospital, National Cancer Center)
  • 김홍래 (국립암센터 융합기술연구부 의공학연구과) ;
  • 김성천 (국립암센터 융합기술연구부 의공학연구과) ;
  • 김광기 (국립암센터 융합기술연구부 의공학연구과) ;
  • 김영우 (국립암센터 이행성 임상 제1연구부 위암연구과)
  • Received : 2013.06.19
  • Accepted : 2013.09.09
  • Published : 2013.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Ultrasonic shears is currently in wide use as an energy device for minimal invasive surgery. There is an advantage of minimizing the carbonization behavior of the tissue due to the vibrational energy transfer system of the transducer by applying a piezoelectric ceramic. However, the vibrational energy transfer system has a pitfall in energy consumption. When the movement of the forceps is interrupted by the tissue, the horn which transfers the vibrational energy of the transducer will be affected. A study was performed to recognize different tissues by measuring the impedance of the transducer of the ultrasonic shears in order to find the factor of energy consumption according to the tissue. In the first stage of the study, the voltage and current of the transducer connecting portion were measured, along with the phase changes. Subsequently, in the second stage, the impedance of the transducer was directly measured. In the final stage, using the handpiece, we grasped the tissue and observed the impedance differences appeared in the transducer To verify the proposed tissue distinguishing method, we used the handpiece to apply a force between 5N and 10N to pork while increasing the value of the impedance of the transducer from 400 ${\Omega}$.. It was found that fat and skin tissue, tendon, liver and protein all have different impedance values of 420 ${\Omega}$, 490 ${\Omega}$, 530 ${\Omega}$, and 580 ${\Omega}$, respectively. Thus, the impedance value can be used to distinguish the type of tissues grasped by the forceps. In the future study, this relationship will be used to improve the energy efficiency of ultrasonic shears.

Keywords

References

  1. C.C. Chung, J.P. Ha, Y.P. Ta, W.W. Tsang, M.K. Li. "Double-blind, randomized trialcomparing Harmonic Scalpel hemorrhoidectomy, bipolar scissors hemorrhoidectomy, and scissors excision: ligation technique." Diseases of the colon and rectum, vol. 45, pp. 789, 2002. https://doi.org/10.1007/s10350-004-6299-5
  2. J.H. Jo, Y.H. Jung, Y.J. Lee, J.H. Beak, J.I. Hong, "Thema: Piezoelectric Ceramic; Development trend of the piezoelectric ceramic material", The Korean Institute of Electrical and Electronic Material Engineers, vol. 25, pp. 10, 2012.
  3. D. C. Lee, "Development trend of the ultrasonic electric motor by piezoelectric ceramics", The Korea Institute of Electrical Engineers, vol. 46, pp. 23, 1997.
  4. G.M. Lee, "Technical Description: Development trend with the introduction of the piezoelectric ceramic oscillator.", Journal of KIEEME vol. 10, pp. 172, 1997.
  5. S. Dong, "Research Trends of Lead-Free Piezoelectric ceramic material", Journal of the Korean Ceramic Society, vol. 8, pp. 14, 2005.
  6. J.E. Fox, T.N. Sharp, Practical Electrotherapy: A Guide to Safe Application, Churchill Livingstone Elsevier, 2007.
  7. H.R. Kim, S.C. Kim, T.Y. Kim, K.G. Kim, Y.W. Kim, "Impedance analyzer development and energy control system research for surgical ultrasonic cutter's improvement," Journal of the Korea Society of Imageing Informatics in Medicine vol. 18, no. 69 pp. 12, 2012.
  8. C.N. Jin, J.C. Park, Y.S. Kwon, "Electric Properties of LB Films using Impedance Analysis of Quartz Crystal," The Korean Instiute of Electirical Engineers, vol. 48, pp. 503, 1999.
  9. J.O. Cha, J.S. Ahn, K.B. Lee, "Ferroelectric, Leakage Current Properties of $BiFeO_3/Pb(Zr_{0.52}Ti_{0.48})O_3$ Multilayer Thin Films Prepared by Chemical Solution Deposition", Journal of The Korean Vacuum Society, vol. 19, pp. 52, 2010. https://doi.org/10.5757/JKVS.2010.19.1.052
  10. S. Deshpande, H. Potdar, M. Patil, V. Deshpande, Y. Khollam, "Dielectric Properties of BaTiO3 Ceramics Prepared from Powders with Bimodal Distribution," Journal of Industrial and Engineering Chemistry , vol. 12, pp. 584, 2006.
  11. G. Haertling, R. Buchanan, "Ceramic materials for electronics," Buchanan, New York, 1991, pp. 12.
  12. K.W. Lee, "Technology and market trends of the present and future of the piezoelectric ceramics", Journal of the Korean Ceramic Society, vol. 8, pp. 33, 2005.
  13. J.S. Park, J.J. Park, S.R. Lee, S.M. Chang, J.M. Kim, "The Chacteristics of Resonant Resistance Change of the Piezoelectric Quartz Crystal Depending on the Polymer Polarity," Journal of the Korean Industrial and Engineering Chemistry vol. 18, pp. 71, 2007.
  14. J.S. Park, S.W. Lee, "Design and Piezoelectric properties of 2-2 piezocomposite Ultrasonic Transducers by means of the Finite Element Methode," The Institute of Electronics Enginneers of Korea vol. 48, 2011.
  15. J.S. Park, J.J. Park, S.R. Lee, S.M. Chang, J.M. Kim, "The Chacteristics of Resonant Resistance Change of the Piezoelectric Quartz Crystal Depending on the Polymer Polarity," The Korean Society of Industrial and Engineering Chemistry vol. 18, pp. 71, 2007.
  16. T. Morita, "Piezoelectric Materials Synthesized by the Hydrothermal Method and Their Applications," Materials, vol. 3, no. 52, pp. 36, 2010.
  17. D. Robertson, G. Hayward, A. Gachagan, V. Murray, "Comparison of the frequency and physical nature of the lowest order parasitic mode in single crystal and ceramic 2-2 and 1-3 piezoelectric composite transducers," Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, vol. 53, no. 15, pp. 03, 2006.
  18. S.H. Lee, S.P. Nam, S.G. Lee, Y.H. Lee, "Piezoelectric and Dielectric Properties of NKN-(1-x)BNT-xBT Ceramics," Journal of KIEEME, vol. 23, pp. 771, 2010. https://doi.org/10.4313/JKEM.2010.23.10.771
  19. A. Turo et al., "Ultra-low noise front-end electronics for aircoupled ultrasonic non-destructive evaluation," Ndt & E International vol. 36, pp. 93, 2003. https://doi.org/10.1016/S0963-8695(02)00091-9
  20. Y. Xu, X. Yuhuan, "Ferroelectric materials and their applications," North-Holland Amsterdam ets, 1991.
  21. Y. Yanez, M. Garcia-Hernandez, J. Salazar, A. Turo, J. Chavez, "Designing amplifiers with very low output noise for high impedance piezoelectric transducers," NDT & E International, vol. 38, pp. 491, 2005. https://doi.org/10.1016/j.ndteint.2005.01.004