Method for preparing modified biodegradable polylmer, modified biodegradable polymer prepared therefrom, and biodegradable stent using the same

Disclosed are a method for preparing a modified biodegradable polymer by using various additives and plasticizers in a biodegradable polymer which is non-toxic to human bodies, a biodegradable polymer prepared therefrom, and a biodegradable stent prepared by using the biodegradable polymer. Specific...

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Bibliographische Detailangaben
Hauptverfasser: Kang, Jonghee, Kang, Eunyoung, Han, Dongkeun, Joung, Yoonki
Format: Patent
Sprache:eng
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Zusammenfassung:Disclosed are a method for preparing a modified biodegradable polymer by using various additives and plasticizers in a biodegradable polymer which is non-toxic to human bodies, a biodegradable polymer prepared therefrom, and a biodegradable stent prepared by using the biodegradable polymer. Specifically, it is possible to reduce a decrease in molecular weight resulting from a thermal degradation occurring during the solid-phase molding processing of a biodegradable polymer by coating a solution in which various additives are dissolved during the modification of the biodegradable polymer to convert the hydroxyl end group into a functional group of a carboxylic group or a different kind of hydroxyl group.