Patent ID: 8690919

Claim:
A surgical spacer comprising: a structure having an outer surface, first and second support members and an interior cavity, wherein the structure includes a plurality of outer edges each being concave in shape; a flexible container disposed in the interior cavity of the structure; a compressible material disposed within the container; the container substantially impermeable to the material; the first and second support members being more rigid than the flexible container such that the first and second support members provide shape control of the flexible container at a center region by contracting the center region; a combination of the first and second support members controlling a shape of the flexible container, with the compressible material disposed therein, in response to a compressive load applied to an exterior of the spacer; wherein the structure comprises a woven mesh exterior configured to provide a variable degree of permeability that is controlled by loosening or tightening of a weave in the woven mesh exterior.