Overview of Degradable Polymer Materials Suitable for 3D Printing Bio-stent

With the continuous development of biomedical materials, biopolymer materials suitable for 3D printing have attracted more and more attention from scientists. Especially in the case of urethral stricture, the traditional urethral dilatation is not only badly treated but also the patient will suffer great pain. Then the biodegradable material that can be degraded in the human body can better solve this problem and complete it in the human body. After supporting the function, it will degrade into harmless substances. In the past, polylactic acid-based stents had poor mechanical properties when their diameters were large. Now, this problem can be solved by manufacturing the stent by 3D printing after calculation and modeling. This article mainly introduces the application of biodegradable materials in the field of bio-stents and the latest research progress from the perspective of vascular stents and urinary system stents.