Patent ID: 7041713

Claim:
A method for preparing an artificial dura mater which is formed as an integral molding of an amorphous or low crystallinity polymer and a structural reinforcement, wherein the amorphous or low crystallinity polymer and the structural reinforcement are integrated by bonding, fusion or impregnation, the amorphous or low crystallinity polymer having a degree of crystallinity of 20% or lower, the amorphous or low crystallinity polymer having an elastic modulus at 5% extension of 10 MPa or lower, the amorphous or low crystallinity polymer having a Tg of 15° C. or lower, the amorphous or low crystallinity polymer having a tensile elongation at breaking of 200% or greater, the amorphous or low crystallinity polymer has an elastic modulus at 37° C. of 1×10 8 Pa or less, the amorphous or low crystallinity polymer having a ratio of relaxation elastic modulus at 23° C./elastic modulus at 37° C. of 0.3 or greater, the structural reinforcement having an elastic modulus at 5% extension of greater than 10 MPa, the structural reinforcement having a Tg of higher than 15° C., the structural reinforcement having a tensile elongation at break of less than 200%, and the amorphous or low crystallinity polymer having a weight of 10 to 98% of the total weight of the integral molding, and the structural reinforcement having a weight of 2% or more of the total weight of the integral molding, comprising the step of integrating the amorphous or low crystallinity polymer and the structural reinforcement by bonding, fusing or impregnating to give an integrally molded artificial dura mater.