US 9,688,788 B2Granted

Polymer particles

AssigneeTerumo Kabushiki Kaisha

InventorsSteve Plotkin, Gregory M. Cruise, Edward Michael Keeley, Renee Yu, Clayton Harris

Life of this patent

Estimating the term…

Polymer particle embolics and methods of making same are described. The particle embolics can be used as embolization agents.

Dependent claims

A method of making a spherical polymer particle comprising:

reacting an aqueous based prepolymer solution including at least one derivatized polyether macromer and an initiator in an oil to form the spherical polymer particle;
wherein said spherical polymer particle has a diameter less than about 1,200 μm.

Dependencies are inferred from the claim text.

C08F 220/382
Esters containing sulfur: and containing oxygen, e.g. 2-sulfoethyl acrylate
A61K 9/0019
Galenical forms characterised by the site of application: injectable compositions; Intramuscular, intravenous, arterial, subcutaneous…
A61K 9/146
Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried,…: with…
A61K 9/5026
Organic macromolecular compounds: obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, polyacrylates

From the US filing history. Foreign family members aren’t listed.

Loading patent…