CAJ | 학술논문

镁合金支架由于其具有独特的可降解性，开启了胆管支架应用的新纪元。本文对AZ31管材进行了不同变形量的冷轧试验，控制变形量ε在15％左右，可得到最佳的表面质量及管材性能，选择400℃的热处理工艺能有效消除内应力，同时细化晶粒、均匀组织。文章还对镁合金胆管支架和临床广泛在用的不锈钢支架在生物相容性、支架扩张性、轴向缩短率等方面进行了对比，考量可降解支架在胆管领域应用的可行性。
미합금지가유우기구유독특적가강해성，개계료담관지가응용적신기원。본문대AZ31관재진행료불동변형량적랭알시험，공제변형량ε재15％좌우，가득도최가적표면질량급관재성능，선택400℃적열처리공예능유효소제내응력，동시세화정립、균균조직。문장환대미합금담관지가화림상엄범재용적불수강지가재생물상용성、지가확장성、축향축단솔등방면진행료대비，고량가강해지가재담관영역응용적가행성。
Because of the biodegradable character, magnesium alloys opened a new era applications of biliary stent. AZ31 magnesium alloy rolled in room temperature, if the ε value was controlled at 15%, it could get the best tube surface and mechanical capability, the excellent heat treatment was 400 ℃. These techniques can slake the internal stress and crystal grain could be refinement. Compared the biocompatibility and axial shortening rate between magnesium alloy stent and stainless steel stent, the feasibility of biodegradable stent in the bile duct field was considered.