Importance

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Abstract

Polyurethane and poly(urea)urethane compositions as specified below are utilized as luting agents, for filling cavities or spaces in human or other animal bones, and are introduced in liquid form and formed in situ to create a polyurethane or poly(urea)urethane elastomer which is relatively compatible with the surrounding tissue, has good adhesive properties, low friability, and good tear and tensile strength. The invention includes the polyurethane and poly(urea)urethane compositions disclosed and their uses in the performance of surgery in human beings and other animals. The polyurethane and poly(urea)urethane compositions are produced by the reaction of an 'A' component prepolymer which is the reaction product of a diiosocyanate with a long chain diol or polyol, and a two element 'B' component, which may include as a filler any of the polyols used in producing the 'A' component prepolymer, and as a curing agent relatively short chain diol or triol and, desirably, a diamine (in the case of a poly(urea)urethane) or combinations thereof. The curing agent of the 'B' component is relatively highly reactive and reacts with a majority of the 'A' component. The filler of the 'B' component is less reactive and acts as a bulking agent to facilitate mixing of the 'A' and 'B' components.

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First Claim