发明授权
US07842377B2 Porous polymeric particle comprising polyvinyl alcohol and having interior to surface porosity-gradient
有权
包含聚乙烯醇的多孔聚合物颗粒并具有内表面孔隙度梯度
- 专利标题： Porous polymeric particle comprising polyvinyl alcohol and having interior to surface porosity-gradient
- 专利标题（中）： 包含聚乙烯醇的多孔聚合物颗粒并具有内表面孔隙度梯度
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申请号： US12236051申请日： 2008-09-23
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公开(公告)号： US07842377B2公开(公告)日： 2010-11-30
- 发明人: Janel Lanphere , Ernest J. St. Pierre , Greg Kapoglis , Thomas V. Casey, II
- 申请人： Janel Lanphere , Ernest J. St. Pierre , Greg Kapoglis , Thomas V. Casey, II
- 申请人地址： US MN Maple Grove
- 专利权人： Boston Scientific Scimed, Inc.
- 当前专利权人： Boston Scientific Scimed, Inc.
- 当前专利权人地址： US MN Maple Grove
- 代理机构： Fish & Richardson P.C.
- 主分类号： B32B5/16
- IPC分类号： B32B5/16 ; A61K31/745 ; A61K31/80 ; A61K9/14
摘要：
A composition includes a plurality of particles. At least some of the plurality of particles include cross-linked polyvinyl alcohol and have a diameter of about 500 microns or less. The particles have a first average pore size in an interior region, and a second average pore size at a surface region. The first average pore size being greater than the second average pore size. The composition also includes a carrier fluid. The plurality of particles being in the carrier fluid.
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