The study for Compliance Mismatch in the End-to-End Anastomosis of Coronary Artery and PTFE

관상동맥과 PTFE의 End-To-End 문합에서 컴플라이언스 부적합에 관한 연구

  • 심재준 (동아대학교 일반대학원 기계공학과) ;
  • 한근조 (동아대학교 공과대학 기계공학과) ;
  • 안성찬 (LG-OTIS 연구소)
  • Published : 2003.01.01


Finite element analysis of end-to-end artery/PTFE anastomosis recently have been researched. But, these studies were carried out without the compensation for the error of finite element analysis and assumed the artery and PTFE as the simple cylindrical shape in spite of being the fatty tissue which covers the heart. Therefore, we performed the convergency study with respect to increasing the element numbers and considered the fatty tissue as the elastic foundation in the finite element analysis. The results are as fallow : 1. An anastomosis with the thinner thickness and larger diameter PTFE than artery could reduce the compliance disagreement. 2. A fatty tissue was affected to reduce the compliance mismatch in the vicinity of anastomosis of different material. Therefore a hypercompliant zone become narrorw and a compliance discrepancy decrease between the artery and the PTFE about 70%. And radial displacement with respect to longitudinal direction of an artery and the PTFE anastomosis was similar to a sectional compliance.


Anastomosis;Compliance;Elastic Foundation;coronary Artery;Fatty Tissue


  1. Weston, M. W., Rhee K., and Tarbel J. M., 1995, 'Compliance and Diameter Mismatch Affect the Wall Shear Rate Distribution Near an End-to-End Anastomosis,' Journal of Biomechanics, Vol. 29, No.2, pp. 187-198
  2. Kim, Y. H., 1992, 'Flow Dynamics Near End-To-End Anastomoses,' Journal of KOSOMBE, Vol. 13, No.2, pp. 165-173
  3. Chapra, S. C., and Canale R. P., 1998, Numerical Methods for Engineers, McGraw-Hill, pp. 438-472
  4. Rohen, J. W., and Yokochi C., 1983, A Photographic Study of the Human Body, Gomunsa, pp. 250-256
  5. Henry, Haimovici M. D., 1976, Vascular Surgery - Principles & Techniques, McGraw-Hill, pp. 304-324
  6. Webster, John G., 1988, Encyclopedia of Medical Devices and Instrumentation, John Wiley & Sons, pp. 328-350
  7. Chandran, K. B., Gao, D., Han, G. J., Baraniewski, H., and Corson, J. D., 1992, 'Finite - Element Analysis of Arterial Anastomoses with Vein, Dacron and PTFE Grafts,' Medical & Biological Enngineerig & Computing, pp. 413-417
  8. Ballyk, P. D., Walsh, C., Butany J., and Ojha, M., 1997, 'Compliance Mismatch may Promote Graft-Artery Intimal Hyperplasia by Altering Suture-Line Stresses,' Journal of Biomechanics, pp. 229-237
  9. Han, G. J., Kim, Y. H., Ahn, S. C., Shim, J. J., 1998, 'Th- Effect of the Diameter and Anastomotic Angle on the End-to-Side Anastomosis,'Joumal of the Korea Society of Medical and Biological Engineering, Vol. 19, No. 2, pp. 183-188