Patent ID: 7988986

Claim:
A material suitable for use in an implant consisting of a biocompatible water-insoluble, hydrophilic flexible cohesive elastic aqueous polyvinylpyrrolidone (PVP) gel mass free of cross-linking agents and having a volume that is water-stabilized wherein said implantable material is obtained by: (a) combining an amount of water with an amount of polyvinylpyrrolidone (PVP) having a molecular weight-related viscosity of K 29 or greater and wherein the weight of PVP is about 65% to about 80% of the weight of the water, and a minor amount of base compound forming a mixture wherein the mixture is free of cross-linking agents; (b) reacting the mixture of (a) at ambient temperature and pressure until a hydrophilic flexible cohesive water-insoluble gel mass is formed; and (c) adding an amount of water to the reacted gel mass of (b) to maximize and stabilize the gel mass volume.