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通过对46例食管良、恶性挟窄置放50例/次国产可伸展型食管金属内支架的临床应用,报告了两种目前国内常见的金属内支架的结构和临床使用特点。其中.镍钛记忆合全支架是采用高度记忆特性的镍钛合金材料,进行特殊工艺处理后制成,该支架柔韧性好,扩张效果确切;带膜不锈钢支架用医用不锈钢丝,按一定的力学原理编织而成,有一定的膨胀性。特别是支架内外被复一层硅橡胶膜,具有屏障作用。因此。作者认为,镍钛记忆合金支架适用于各种疤痕挛缩和短段肿瘤病灶造成的食管狭窄;而带膜不锈铜支架适用于晚期肿瘤或术后瘤复发造成的狭窄,对于晚期食管癌并发食管气管瘘者具有良好的堵瘘效果。
Through the clinical application of 46 cases of esophageal metal stents with good esophageal stenosis and 50 cases of inferior esophageal stenosis, the structure and clinical characteristics of two common domestic metal stents were reported. Among them, the nickel-titanium memory full stent is made of nickel-titanium alloy material with high memory characteristics. It is made after special processing. The stent has good flexibility and exact expansion effect. The medical stainless steel wire with membrane stainless steel stent is according to a certain degree of mechanics. The principle of weaving, there is a certain degree of expansion. In particular, the inside and outside of the stent are covered with a layer of silicone rubber film, which has a barrier effect. therefore. The authors believe that the nickel-titanium memory alloy stent is suitable for all kinds of scar contracture and esophageal stenosis caused by short-segment tumor lesions; and the coated stainless steel stent is suitable for stenosis caused by advanced tumor or postoperative recurrence of tumor, and for advanced esophageal cancer complicated by esophagus Tracheal fistulas have a good blocking effect.