Patent ID: 11957755
Assignee: BOSTON SCIENTIFIC MEDICAL DEVICE LIMITED
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 0:
1. A method of treatment in which a hydrogel is administered into a blood vessel of a patient to embolize said blood vessel, the hydrogel being in the form of microspheres comprising a cross-linked polymer network that comprises polyvinyl alcohol (PVA) or a copolymer of PVA and a radiopaque species comprising one or more covalently bound iodines that are coupled to the PVA or copolymer of PVA through a cyclic acetal group and that provides the microspheres with greater than 15 mg of iodine per ml of microspheres fully hydrated in normal saline as a packed volume wherein the radiopaque species comprises an iodinated aromatic group.