Patent ID: 9085665
Filing Date: 2015-07-21
Classification: A61F,B29C,B29K,C08J

Abstract:
1. A method for forming a solid polymer body with pores distributed through at least a portion of the solid, the method comprising: placing a surface of a solid piece of polyetheretherketone (PEEK) in contact with a portion of a plurality of sodium chloride grain layers; heating the surface of the solid piece of PEEK to a processing temperature of about 305 to 342 degrees Celsius; holding the processing temperature of the surface of the solid piece of PEEK for a processing period of time of between about twenty and forty minutes to create a viscous layer of PEEK of the solid piece of PEEK; displacing at least the portion of the plurality of sodium chloride grain layers through the viscous layer of the solid piece of PEEK, creating a matrix layer of PEEK and sodium chloride grains; and leaching one or more of the sodium chloride grains of the plurality of sodium chloride grain layers and cooling the surface of the solid piece of PEEK to form a solid polymer with a porous layer, wherein a shear strength of the porous layer increases substantially linearly with the processing period of time.