Importance

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Abstract

Bio-absorbable polymers such as vascular stent and suture thread for use as materials for clinical practice have almost definite dynamic properties such as tensile strength and degradation rate for absorption. When the dynamic properties thereof are elevated, therefore, the bio-absorbable polymers turn fragile, involving slower degradation rate. When the degradation rate is elevated, further, the dynamic properties are deteriorated. Disadvantageously, such bio-absorbable polymers have limited purposes for use and limited sites for use. Thus, copolymerization of bio-absorbable polymers with a cyclic depsipeptide to form a copolymer of the ring-opened and copolymerized depsipeptide can allow the adjustment of the dynamic properties and degradation rate of the resulting copolymer depending on the content of the depsipeptide.

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First Claim