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研究生:戴文鏗
研究生(外文):Wen-keng Dai
論文名稱:血管支架塑性成形分析
論文名稱(外文):A Study on Stent Plastic Forming
指導教授:光灼華
指導教授(外文):Jao-hwa Kuang
學位類別:碩士
校院名稱:國立中山大學
系所名稱:機械與機電工程學系研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:114
中文關鍵詞:血管支架置入術血管支架有限元素法
外文關鍵詞:FEMstentPTCA with stent
相關次數:
  • 被引用被引用:16
  • 點閱點閱:327
  • 評分評分:
  • 下載下載:78
  • 收藏至我的研究室書目清單書目收藏:0
本論文在探討血管支架置入術中,血管支架歷經擴張氣球加壓與卸壓的變形過程及血管支架設計參數與變形之相互關係。文中配合相關材料特性分別假設擴張氣球為線彈性材質,血管支架為彈-塑性材質,血管則為非線性彈性的Odgen模式,並配合有限元素進行擴張與卸載模擬。
本文使用Marc套裝軟體建立擴張氣球、血管支架及血管壁,對應之有限元素模型。討論之參數主要有血管支架長度、血管支架厚度、血管支架溝槽長度比及血管條件等。分析對象則為:血管支架之徑向與軸向之塑性變形分佈與回壓及最大應力分佈。分析結果顯示,在分析血管支架問題時,是否考慮血管的存在,將嚴重影響血管支架成形分析之結果。尤其是血管在卸載過程中對血管支架之回壓效應,有些時候亦不可忽略,另血管支架之諸設計參數變化亦將影響整個血管支架之最終變形分佈。
The plastic deformation of stent is investigated in this study and the effect of atherosclerotic artery on the stent deformation is studied. The relationship between different stent structure parameters; i.e., stent thickness, length, slot length ration and final deformation are also discussed.
The elastic-plastic finite element models is employed in the deformation and residual stress analysis. The materials of balloon, stent and artery were assumed to be linear elastic, elasto-plastic and nolinear-elastic Odgen model, respectively.
A typical Palmaz type stent is analyzed. The deformation and stress distributions of the stent are simulated with the inflation and the deflation of the angioplasty balloon.
Results indicate that the considering of the atherosclerotic artery may affect the calculated stent deformation and stress distributions significantly.
目錄 I
圖目錄 IV
表目錄 VIII
摘要 IX
ABSTRACT X
符號說明 XI
第一章 緒論 1
1-1 前言 1
1-1-1 冠狀動脈繞道手術 2
1-1-2 經皮冠狀動脈氣球擴張術 3
1-1-3 血管支架置入術 3
1-1-4 研究目標與目的 4
1-2 文獻回顧 5
1-3 組織與章節 7
第二章 有限元素模型之建立 13
2-1 MARC與MENTAT程式介紹 13
2-1-1 MSC.Marc套裝軟體之組織架構 14
2-1-2 MSC.Marc資料庫之結構 15
2-2 有限元素模型 15
2-2-1 問題描述 16
2-2-2 分析方法 16
2-2-3 相關理論說明 17
2-2-4 有限元素模型 19
2-3 基本模型 21
第三章 血管支架塑性成形分析 37
3-1 考慮血管壁效應之血管支架於變形及應力分佈之影響 37
3-2 PALMAZ血管支架設計參數制定 40
3-3 等距溝槽長度設計:血管支架長度的影響 42
3-4 等距溝槽長度設計:血管支架管厚的影響 43
3-5 不等距溝槽長度設計:血管支架溝槽長度比的影響 45
第四章 結論 79
4-1 結論 79
4-2 未來研究 80
參考文獻 81
附錄A 血管支架拉伸實驗 85
附錄B 血管材料曲線及ODGEN材料模型定義 97
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