Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
권호 표지
DOI QR코드

DOI QR Code

Mechanical Stability of TiN and DLC Coated Instrument of Pedicle Screw System

TiN 및 DLC 코팅된 척추경나사못시스템 수술기구의 기계적 안정성 분석

  • Kang, Kwan-Su (Medical Device Development Center, Osong Medical Innovation Foundation) ;
  • Jung, Tae-Gon (Medical Device Development Center, Osong Medical Innovation Foundation) ;
  • Yang, Jae-Woong (Medical Device Development Center, Osong Medical Innovation Foundation) ;
  • Woo, Su-Heon (R&D Center, Medyssey Co.) ;
  • Park, Tea-Hyun (R&D Center, Medyssey Co.) ;
  • Jeong, Yong-Hoon (Medical Device Development Center, Osong Medical Innovation Foundation)
  • 강관수 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 정태곤 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 양재웅 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 우수헌 ((주)메디쎄이 기술연구소) ;
  • 박태현 ((주)메디쎄이 기술연구소) ;
  • 정용훈 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터)
  • Received : 2019.06.18
  • Accepted : 2019.06.28
  • Published : 2019.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Durability of instrument is one of the most important factor to ensure accurate treatment and decrease failure for the orthopedic surgical operation. Normally, a set-screw driver tip has been processed with hard coating for their higher durability and wear resistance. And several surface modification methods were obtained such as titanium nitride (TiN) coating, diamond like carbon coating, other nitriding, and etc. In this study, we have surface modified on set-screw driver tip with TiN and DLC, investigated whether the TiN and DLC coatings affect the mechanical properties and durability of the set-screw driver tip in the pedicle screw system. The surface morphologies were observed with scanning-electron microscopy (SEM), and the static/dynamic torsional properties were investigated with universal testing machine based on ASTM F543. Coating thickness of each coatings were commonly around $1^{\circ}C$. Static torsional stiffness, and ultimate torque values for DLC and TiN coated samples were significantly higher than those of non-coated sample by the pared T-test. Surface morphology of after the dynamic torsional test was more clean with less scratch or friction traces from DLC coating than that of TiN coating and non-coated sample.

Keywords

PMGHBJ_2019_v52n3_163_f0001.png 이미지

Fig. 1. Image of torsional test for set-screw driver tip based on ASTM F543: (a) Before, (b) After

PMGHBJ_2019_v52n3_163_f0002.png 이미지

Fig 3. Result of dynamic torsional test for TiN, DLC, and non-coated set-screw driver tip

PMGHBJ_2019_v52n3_163_f0003.png 이미지

Fig 2. Analytical protocol with torque vs. angle curve based on ASTM F543: A. torsional stiffness (N-m/°), B. Torsional yield strength (N-m), C. Torsional yield angle ( ° ), D. Ultimated torque (N-m)

PMGHBJ_2019_v52n3_163_f0004.png 이미지

Fig 5. Cross-sectional image of the (a) DLC coating, and (b) TiN coating layer obtained by FE-SEM

PMGHBJ_2019_v52n3_163_f0005.png 이미지

Fig 4. Representative image of test specimens: (a) non-coated set-screw driver tip, (b) DLC coated, (c) TiN coated

PMGHBJ_2019_v52n3_163_f0006.png 이미지

Fig. 6 Results of static torsional test for TiN, DLC coated, and non-coated set-screw driver tip. Significances were marked with star.

PMGHBJ_2019_v52n3_163_f0007.png 이미지

Fig. 7 Surface morphology of DLC, TiN, and Non-coated set-screw driver tip after the dynamic torsional durability test: (a) DLC coated, (b) TiN coated, (c) non-coated

Table 1. DLC and TiN coating method on set-screw driver tip

PMGHBJ_2019_v52n3_163_t0001.png 이미지

Table 2. Results of dynamic torsional durability test

PMGHBJ_2019_v52n3_163_t0002.png 이미지

References

  1. Roy-Camille R, Saillant G, Mazel C, Internal fixation of the lumbar spine with pedicle screw plating, Clin. Orthop. Relat. Res., 203 (1986) 7-17.
  2. Cotrel Y, Dubousset J, Guillaumat M., New and universal instrumentation in spinal surgery, Clin. Orthop. Relat. Res., 227 (1988) 10-23.
  3. Pichler W, Mazzurana P, Clement H, Grechenig S, Mauschitz R, Grechenig W. Frequency of instrument breakage during orthopaedic procedures and its effects on patients, J. Bone Joint Surg. Am., 90 (2008) 2652-4. https://doi.org/10.2106/JBJS.H.00163
  4. R. Hauert, K. Thorwarth, G. Thorwarth, An overview on diamond-like carbon coatings inmedical applications, Surf. Coat. Technol., 233 (2013) 119-130. https://doi.org/10.1016/j.surfcoat.2013.04.015
  5. J. M. KiM, O. W Kwon, K. H. Kim, The physical properties of TiN ion-plated Co-Cr (elgiloy) orthodontic wires, Korea. J. Orthod., 28 (1988) 371-337.
  6. K. S. Shin, C. W. Cho, Y. S. Lee, Effect of surface roughness on wear-life of DLC coated silicon disk in dry sliding, J. Korean Soc. Tribol. Lubr. Eng., 2 (2006) 130-135.
  7. A. Escudeiro, M. A. Wimmer, T.Polcar, A. Cavaleiro, Tribological behavior of uncoated and DLC-coated CoCr and Ti-alloys in contact with UHMWPE and PEEK counterbodies, TRIBOL. INT., 89 (2015) 97-104. https://doi.org/10.1016/j.triboint.2015.02.002
  8. W. G. Kim and H. C. Choe, Effects of TiN Coating on the Corrosion of Nanostructured Ti-30Ta-xZr Alloys for Dental Implants, Appl. Surf. Sci., 258 (2012) 1929-34. https://doi.org/10.1016/j.apsusc.2011.06.151
  9. M. S. Kim, J. H. Lee, A study on the compatibility of implant drivers, J Korean Acad Prosthodont., 52 (2014) 34-40. https://doi.org/10.4047/jkap.2014.52.1.34
  10. "Standard Specification and Test Methods for Metallic Medical Bone Screws" ASTM F543-17.
  11. 보건의료빅테이터개방시스템 치료재료 청구 정보(통계) (www.opendata.hira.or.kr)
  12. K. Shiozawa, L. Han, Low-Cycle Fatigue Strength of Carbon Steel Coated with TiN by PVD Method, Trans. Jpn. Soc. Mech. Eng., 59A (1993) 733-740. https://doi.org/10.1299/kikaia.59.733
  13. Y.L. Su, S.H. Yao, C.S. Wei, C.T. Wu, Tension and fatigue behavior of a PVD TiN-coated material, Thin Solid Films, 315 (1998) 153-158 https://doi.org/10.1016/S0040-6090(97)00707-4
  14. Jiwtode, V. L., Raut, L. P., Wear of Impact Socket: A Review, IJSRD Int. J. Sci. Res. Dev., 2 (2014) 652-655.
  15. K. S. Kang, T. G. Jung, J. W. Yang, S. H. Woo, T. H. Park, Y. H. Jeong, Mechanical Properties of TiN and DLC coated Rod for Pedicle Screw System, J. Kor. Inst. Surf. Eng., 50 (2017) 183-191. https://doi.org/10.5695/JKISE.2017.50.3.183
  16. S. Y. Yoon, Y. B. Lee, K. H. Kim, A comparative study on mechanical properties of TiN and TiAlN films prepared by Arc Ion Plating Technique, J. Kor. Inst. Surf. Eng., 35 (2002) 199-205.
  17. J, C. Jang, S. H. Kim, Characterization of DLC Coated Surface of Fe-3.0%Ni-0.7%Cr-1.4%Mn-XSteel, J. Kor. Inst. Surf. Eng., 47 (2014) 13-19. https://doi.org/10.5695/JKISE.2014.47.1.013
  18. M. Lepicka, M. Gradzka-Dahlke, D. Pieniak, K.Pasierbiewicz, A. Niewczas, Effect of mechanical properties of substrate and coating on wear performance of TiN- or DLC-coated 316 LVM stainless steel, Wear, 382 (2017) 62-70. https://doi.org/10.1016/j.wear.2017.04.017