Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Development of Intravascular Micro Active Endoscope(I) -Analysis of Lubrication Characteristics of Small Arteries with Micro Catheter Insertion-

혈관 삽입형 초소형 작동형 내시경의 개발(I) - 도뇨관 삽입시 혈관 내부의 윤활 특성 분석 -

  • 장준근 (서울대학교 정밀기계설계공동연구소) ;
  • 김중경 (서울대학교 대학원 협동과정 의용생체공학전공)
  • Published : 1999.09.01
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Abstract

The objective of this investigation is to examine the influence of the micro catheters, which mimic the intravascular micro active endoscopes, on local pressure changes and flow rate in an arterial branch model similar to the femoral artery of human. The effects of branch to main lumen flow rate ratios and the locations of a catheter tip were found to be significant on the local pressure changes. Relatively large pressure drops and an increase in shear stress due to the obstruction effects may induce an endothelial cell damage and a change in arterial wall permeability, which have been reported to be the primary cause of the initiation of the atherosclerosis and other major vascular diseases.

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References

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