1.Xi’an Continental Biomaterials Co.,Ltd., Xi’an 2.Northwest Institute for Nonferrous Metal Research, Xi’an
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DOI:
10.7502/j.issn.1674-3962.2015.05.12
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Abstract:
Although various types of stent drug coating technologies have made great progress, and the quantity of drug coating stents utilization is also more than that of non-drug coating stents in clinical application, however the long-term efficacy remains being observed. Regardless of what drug coating stent, when it was implanted in the body for a long time, the drug coating will be gradually absorbed and the material of stent is exposed, so the problems of the non-drug coating stents can not be completely solved. Biodegradable stent is different from other stents, it can be degraded when implanted in the human body. After a period of time, it was degraded completely and is excreted, as if not being implanted in general. This paper not only described the different biodegradable materials stents, including magnesium alloy, pure iron, polylactide and zinc alloy stent,but also analyzed the problems of different biodegradable stents, wishing to play a positive role in the development and application of biodegradable stent.