BIOMECHANICAL CHARACTERISTIC OF CORONARY STENT IN PERCUTANEOUS TRANSLUMINAL CORONARY ANGIOPLASTY

摘要

During two thousand years the coronary arterial disase has been the major cause of premature deaths. It's believed to be the cause of around 40% middle-aged male deaths. It's also the second most frequent cause of premature female deaths. Sclerotic changes which are determining the cause of the artery narrowing are simply local volume increase of the adipose tissue inside the vessel. This causes the decrease of the vessel crossection till a total close-up of the coronary artery. One of coronary arterial disase treating method is Percutaneous Transluminal Coronary Angioplasty (PTCA) with stent implantation. [1]. A complexity of problems related to preparing, operation procedure and collection of data concerning in vivo processes on the stent - vessel interface requires cooperation of experts on different fields of interests. Because of rapid development of computer techniques it is possible to simulate the stent implantation and utilization of the stent. It is possible to create the stent - coronary vasel system, on the basis of physical and mathematical model and FEM allows to determine the implant behaviour in conditions nearing real ones and searching optimal material properties and constructions at the some time [2].