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US 7,611,542 B2Granted
Tissue treatment
AssigneeBoston Scientific Scimed, 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.
Claims26
A method of treating tissue, the method comprising:
- placing substantially spherical polymer particles in the tissue, the particles having an interior region comprising pores having a predominant pore size in the range of about 20 to 35 microns, a first region substantially surrounding the interior region comprising pores having a predominant pore size in the range of about 2 to 18 microns, and a third region surrounding the second region comprising pores having a predominant pore size of about 2 microns or less,
- wherein the polymer comprises crosslinked polyvinyl alcohol.
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, the particles having an interior region comprising pores having a predominant pore size in the range of about 20 to 35 microns, a first region substantially surrounding the interior region comprising pores having a predominant pore size in the range of about 2 to 18 microns, and a third region surrounding the second region comprising pores having a predominant pore size of about 2 microns or less,
- wherein the polymer comprises crosslinked polyvinyl alcohol.
Dependencies are inferred from the claim text.