Patent ID: 8487021
Filing Date: 2013-07-16
Classification: A61B,A61K,A61L

Abstract:
1. A bone cement composition, comprising: a liquid component and a non-liquid component that, upon mixing, provide a polymerizable bone cement composition, the liquid component comprising at least one monomer and the non-liquid component comprising at least a polymer and an initiator; wherein the non-liquid component is configured to provide controlled differential exposure of the initiator to the liquid monomer so as to control the viscosity of the bone cement composition and further comprises; a first volume of polymer particles having a mean diameter less than 100 μm and on the basis of the total weight of the first volume of polymer particles, greater than or equal to 1.1 wt. % of the initiator being contained within the first volume; a second volume of polymer particles having a mean diameter greater than 100 μm and on the basis of the total weight of the second volume of polymer particles, greater than or equal to 0.9 wt. % of the initiator being contained within the second volume; and a third volume of polymer particles having a mean diameter less than 100 μm and on the basis of the total weight of the third volume of polymer particles, wherein 0-1.1 wt. % of the initiator is contained within the third volume, wherein the wt. % of the initiator is different in each of the first, second, and third volumes of polymer particles.