Embolization

摘要

Embolization, as well as related particles, compositions, and methods, are disclosed.

主权项

1. A particle having an interior region and a surface region, a weight percent of a first polymer present in the interior region being less than a weight percent of the first polymer present at the surface region, the particle having a diameter of from about ten microns to about 3,000 microns, wherein the first polymer has the formula D-B-[O-(AO)n-B]m-D, in which O is a first oligomeric segment, B is a first coupling segment, A is a second coupling segment, D is a polyfluoro oligomeric group comprising CF3(CF2)pCH2CH2, m is from one to 20, and n is from zero to 20, and p is from two to 20.