Patent ID: 9314339
Filing Date: 2016-04-19
CPC Classification: A61F,A61L

Claim Text:
1. A surgical implant for replacing cartilage in an articulating mammalian joint, comprising: an anchoring surface on one side of the implant, configured for attaching the implant to a prepared surface of a bone in the articulating mammalian joint; a synthetic polymer hydrogel material, on a side of the implant opposite from the anchoring surface, having an exposed smooth and lubricious surface with a negative electrical charge density, adapted for lubricious sliding interactions in mammalian synovial fluid with another bone in the articulating mammalian joint, wherein the smooth and lubricious surface has a negative electrical charge density within a range of about −50 to about −250 millimolar, when measured by sodium equilibration; and, wherein a flexible fibrous reinforcing matrix is embedded within at least a portion of the hydrogel material.