Freeze-dried cured polymer foam stopper

The present invention relates to a dry freeze-dried foam stopper which is a polymerization reaction product of at least one pair of co-reactive polyethylene glycol having reactive moieties wherein substantially all of the reactive moieties have reacted prior to freeze-drying or blending of a biomaterial and a reactive polyethylene glycol or plasma-derived biomaterial reaction product, and wherein the stopper has a total pore content of about 30%-45% and a microporous structure having average pores typically between 20 [mu] m and 95 [mu] m. 本发明涉及干式冻干泡沫塞子，其是至少一对具有反应性部分的共反应性聚乙二醇的聚合反应产物，其中基本上所有的反应性部分在生物材料和反应性聚乙二醇或等离子体衍生的生物材料反应产物的冻干或共混之前已经发生反应，并且其中该塞子具有约30％-45％的总孔隙含量和具有通常介于20μm和95μm之间的平均孔的微孔结构。