申请人:——
公开号:US20030031697A1
公开(公告)日:2003-02-13
A crosslinkable macromer system and related methods of preparing the system and using the system in the form of a crosslinked matrix between a tissue site and an implant article such as a tissue implant or on the porous surface of a prosthetic device. The macromer system includes two or more polymer-pendent polymerizable groups and one or more initiator groups (e.g., polymer-pendent initiator groups). The polymerizable groups and the initiator group(s), when polymer-pendent, can be pendent on the same or different polymeric backbones. The macromer system provides advantages over the use of polymerizable macromers and separate, low molecular weight initiators, including advantages with respect to such properties as nontoxicity, efficiency, and solubility. A macromer system of the invention can be used as an interface between the tissue site and implant article in a manner sufficient to permit tissue growth through the crosslinked matrix and between the tissue site and implant. In a preferred embodiment, polymers with pendent polymerizable groups, for use in the macromer system, are prepared by reacting a polysaccharide polymer with a reactive moiety in an organic, polar solvent such as formamide.
一种可交联的大分子系统及相关制备方法,以交联矩阵的形式在组织部位和植入物件(如组织植入物或假体器件的多孔表面)之间使用。该大分子系统包括两个或更多的聚合物侧链可聚合基团和一个或多个引发剂基团(例如,聚合物侧链引发剂基团)。当聚合物侧链上的聚合物基团和引发剂基团时,可以附着在相同或不同的聚合物骨架上。该大分子系统相对于使用可聚合大分子和单独的低分子量引发剂具有优势,包括在无毒性、效率和溶解性等方面的优势。本发明的大分子系统可用作组织部位和植入物件之间的接口,以允许组织通过交联矩阵并在组织部位和植入物件之间生长。在一种优选实施例中,用于大分子系统的具有侧链聚合物可聚合基团的聚合物是通过将多糖聚合物与有机极性溶剂(例如甲酰胺)中的反应性基团反应制备的。