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US 7,131,997 B2Granted
Tissue treatment
AssigneeSciMed Life Systems, Inc.
InventorsGeorge Bourne, Marcia S. Buiser, Thomas V. Casey, II, Steve Keenan, Janel L. Lanphere, Jianmin Li, Erin P. McKenna, Zarouhi Minasian, Doreen Rao
Life of this patent
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Abstract
A method of treating tissue includes placing substantially spherical polymer particles in the tissue. The particles include an interior region having relatively large pores and a first region substantially surrounding the interior having fewer relatively large pores than the interior region.
Claims27
A method of treating tissue, the method comprising:
- placing a plurality of substantially spherical polymer particles in the tissue, wherein:
- the particles comprise first pores and second pores that are smaller than the first pores;
- each particle has a center, a surface, a radius, a center region, and a surface region;
- the center region extends radially from the center to about ⅓ of the radius;
- the surface region extends radially from ⅔ of the radius to the surface;
- and
- the surface region comprises fewer of the first pores than the center region.
4 more elements
A method of treating an individual, the method comprising:
- placing a therapeutically effective amount of substantially spherical particles comprising polyvinyl alcohol in a tissue of the individual,
- wherein;
- the particles comprise first pores and second pores that are smaller than the first pores;
- each particle has a center, a surface, a radius, a center region, and a surface region;
- the center region extends radially from the center to about ⅓ of the radius;
- the surface region extends radially from ⅔ of the radius to the surface;
- and
- the surface region comprises fewer of the first pores than the center region.
5 more elements
Dependencies are inferred from the claim text.