发明名称 |
Combination degradable and non-degradable matrices for active agent delivery |
摘要 |
The present invention relates to relates to combination degradable and non-degradable matrices and related methods. In an embodiment, the invention includes an active agent delivery matrix including a degradable polymer network, a non-degradable polymer network, the non-degradable polymer network interspersed within the degradable polymer network, and an active agent. In an embodiment, the invention includes an active agent elution control matrix including a degradable polymer; and a non-degradable polymer interspersed with the degradable polymer. In an embodiment, the invention includes a method of making an active agent delivery matrix including mixing a degradable polymer with a first solvent to form a degradable polymer solution; mixing a non-degradable polymer with a second solvent to form a non-degradable polymer solution; and simultaneously depositing the degradable polymer solution and the non-degradable polymer solution onto a substrate. |
申请公布号 |
US8968782(B2) |
申请公布日期 |
2015.03.03 |
申请号 |
US200711770316 |
申请日期 |
2007.06.28 |
申请人 |
SurModics, Inc. |
发明人 |
Chappa Ralph A.;Hergenrother Robert W.;Bushendorf Paula;Slager Joram |
分类号 |
A61K47/30;A61K38/02;A61K9/00;A61K39/395;A61K45/00;A61L27/58;A61L27/48;A61L27/54;C08L23/08;C08L33/08;C08L71/02 |
主分类号 |
A61K47/30 |
代理机构 |
Pauly, DeVries Smith & Deffner, LLC |
代理人 |
Pauly, DeVries Smith & Deffner, LLC |
主权项 |
1. A method of making an active agent delivery matrix comprising:
mixing a degradable polymer with a first polar solvent to form a degradable polymer solution; mixing a non-degradable polymer with a second non-polar solvent that is immiscible with the first polar solvent to form a non-degradable polymer solution, wherein the non-degradable polymer comprises a first polymer component comprising a polymer selected from poly(alkyl(meth)acrylate), poly(aromatic(meth)acrylate), and combinations thereof and a second polymer component comprising poly(ethylene-co-vinyl acetate); and simultaneously depositing the degradable polymer solution onto a substrate by spraying the degradable polymer solution from a first spray nozzle while simultaneously spraying the non-degradable polymer solution onto the substrate from a second spray nozzle to form an active agent delivery matrix in which the degradable polymer network and the non-degradable polymer network form an interpenetrating matrix, wherein the active agent delivery matrix comprises from 15 wt. % to 50 wt. % degradable polymer and from about 20 wt % to about 60 wt % non-degradable polymer. |
地址 |
Eden Prairie MN US |