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近来年,供科研和教学用的血管立体铸型标本,多利用 ABS 或过氯乙烯等为填充剂,在动脉脉系统铸型标本制作上,已经取得较为成功稳定的经验。但用一般塑料溶于有机溶剂,然后挥发成型的方法,必须多次进行补注,才能获得充填饱满的管道铸型。因此,用以制作静脉铸型标本尚存在操作上的具体困难:由于静脉有瓣膜,必须从远端向近端顺血流方向灌注,填充剂流经的静脉的管径是由小到大,当补注一、二次后,远端小静脉已经
In recent years, for the research and teaching of vascular three-dimensional mold specimens, the more use of ABS or perchlorethylene as a filler, in the arterial pulse mold making, has made more successful and stable experience. However, with the general plastic dissolved in organic solvents, and then volatile molding methods, must be repeated several times in order to get filled filled pipe mold. Therefore, there are still practical difficulties in making a venous cast specimen: since the vein has a valve, it must be perforated in the direction of the superior blood flow from the distal end to the proximal end. The diameter of the vein through which the filler flows is from small to large, When replenished one or two times, the distal venules have been