Patent ID: 7060119
Filing Date: 2006-06-13
Classification: A61B

Abstract:
1. The process of manufacture of a therapeutic abrasive sponge in which a polyurethane foam sponge is impregnated with particulate abrasive material comprising the steps: a. forming a pre-polymer by reacting a polyoxyalkylene polyol with a stoichiometric excess of an organic polyioscyanate, b. mixing particulate abrasive material with the pre-polymer, c. mixing the pre-polymer particulate abrasive material mixture with 30 to 200 percent by weight of the pre-polymer of water, d. curing the polyurethane foam sponge material impregnated with particulate abrasive material, and e. shaping the polyurethane foam sponge material impregnated with particulate abrasive material into a suitable shape.