MODIFIED POROUS MATERIALS AND METHODS OF CREATING INTERCONNECTED POROSITY IN MATERIALS

摘要

Techniques, mixtures and improved porous materials (interconnected porous constructs) that are capable of maintaining a sufficient porosity while conferring improved mechanical and physical strength to the final construct. A sacrificial construct (for example, a sacrificial material such as polymethyl methacrylate (PMMA)) is used to obtain an inverse porosity of the construct it was molded into. The process provides a less porous end material that may be used as an arthroplasty device or surgical implant (for example, an interference screw of suture anchor) among many other applications. The process employs a sacrificial material to reduce the porosity of the final construct to about 35%.

主权项

1. A construct comprising an interconnected porous structure having about 35% porosity and comprising polymethyl methacrylate and a polymer selected from the group consisting of poly-L-lactic acid (PLLA), polylactic acid (PLA), co-polylactic acid/glycolic acid (PLGA), polyglycerol (PGL), polyglycolic acid (PGA), polycaprolactone (PCL), and combinations thereof,
wherein the construct is a surgical implant.