Patent ID: 8685367

Claim:
An embolotherapy formulation, comprising polymer particles shaped to embolize a body lumen, the polymer particles being suspended in a pharmaceutically acceptable liquid and having an excluded diameter of from about 10 microns to about 3,000 microns, and comprising polymeric units having a structure according to Formula I: wherein X=I or Br; Y1 and Y2 independently=0, 1, 2, 3 or 4; wherein f is between 0 and less than 1, g ranges from 0 to 1, inclusive, and f+g is between 0 and 1, inclusive; wherein R and R 2 are independently selected from: wherein for each R 2 , each subgroup R 1 is an H, and, for each R, each subgroup R 1 is independently a long chain aliphatic hydrocarbon; wherein j and m are independently integers from 1 to 8 inclusive; wherein Z is independently either O or S; wherein A is selected from the group consisting of: wherein R 1 is independently an H or an alkyl group ranging, from 1 to about 18 carbon atoms containing from 0 to 5 heteroatoms selected from O and N; R 3 is a saturated or unsaturated, substituted or unsubstituted alkyl, aryl, or alkylaryl group containing up to about 18 carbon atoms and 0 to 8 heteroatoms selected from O and N; and B is an aliphatic linear or branched diol, or a poly(alkylene glycol) unit.