A method, and related composition and apparatus for repairing a tissue site. The method involves the use of a curable polyurethane biomaterial composition having a plurality of parts adapted to be mixed at the time of use in order to provide a flowable composition and to initiate cure. The flowable composition...http://www.google.com/patents/US6140452?utm_source=gb-gplus-sharePatent US6140452 - Biomaterial for in situ tissue repair