Patent ID: 7736671
Filing Date: 2010-06-15
Classification: A61B,A61K,A61L,A61P,Y10T

Abstract:
1. A composition, comprising: a plurality of particles, at least some of the plurality of particles having a diameter of from about 100 microns to about 3,000 microns, wherein the at least some of the particles having a diameter of from about 100 microns to about 3,000 microns comprise a polymer and have an interior region and a surface region, a weight percent of the polymer in the interior region being less than a weight percent of the polymer at the surface region; wherein the polymer has the formula D-B-[O-(A-O) a carrier fluid, the plurality of particles being in the carrier fluid, wherein the carrier fluid comprises a component selected from the group consisting of a saline solution, a contrast agent, and a surfactant.