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US 8,012,454 B2Granted
Embolization
AssigneeBoston Scientific Scimed, Inc.
InventorsRobert F. Rioux, Thomas V. Casey, II, Janel L. Lanphere
Life of this patent
Estimating the term…
Abstract
A particle includes a ferromagnetic material, a radiopaque material, and/or an MRI-visible material.
Claims43
A particle, comprising
- a polymeric matrix;
- and
- a radiopaque material distributed in the polymeric matrix, wherein:
- the particle has a diameter of from about ten microns to about 3,000 microns,
- the particle has a center region with pores having a mean size of about 20 microns or more,
- the particle has a surface region with pores having a mean size of about one micron or less, and
- the polymeric matrix comprises a cross-linked polymer.
4 more elements
A particle, comprising:
- a polymeric matrix;
- and
- a radiopaque material distributed in the polymeric matrix,
- wherein:
- the particle has a diameter of from about ten microns to about 3,000 microns,
- the particle has a center region having pores with a mean size,
- the particle has a surface region having pores with a mean size,
- the particle has a body region having pores with a mean size,
- the body region is between the center region and the surface region,
- the mean size of the pores of the center region is greater than the mean size of the pores of the surface region,
- the mean size of the pores in the body region is from about 50 percent to about 70 percent of the mean size of the pores in the center region, and
- the polymeric matrix comprises a cross-linked polymer.
9 more elements
Dependencies are inferred from the claim text.