#$%^&*AU2013234420B220180809.pdf#####MULTI-LAYER POROUS FILM MATERIAL ABSTRACT A surgical implant (10) includes at least two porous film layers (12) each having a plurality of pores (14). The porous film layers (12) are in a stacked configuration and are interconnected to one another at a plurality of attachment points (16) to define at least one void (18) between the porous film layers (12).