#$%^&*AU2018264049A120181206.pdf#####ABSTRACT A prosthetic valve, comprising: a leaflet formed of at least one layer comprising a composite material including at least one expanded fluoropolymer membrane that is a retracted membrane having serpentine fibrils and the at least one expanded fluoropolymer membrane having pores imbibed with an elastomer so as to at least partially fill at least a portion of the pores of the at least one expanded fluoropolymer membrane. 10839444_1 (GHMatters) P100548.AU.4919 802 1001 800 'A 802100 800