发明名称 |
Fabrication of porous glass bioscaffolds by sol-gel and polymer sponge methods |
摘要 |
Provided herein are biocompatible scaffolds and methods of preparing such bioscaffolds. The methods provide a superior high surface area, interconnected nanomacroporous bioactive glass scaffold, by combining a sol-gel process and polymer sponge replication methods. The formation of a uniformly nanoporous and interconnected macroporous bioscaffold is demonstrated using a starting material comprising a 70 mol % SiO2—30 mol % CaO glass composition as an example. The bioscaffold includes a series of open, interconnected macropores with size from 300 to 600 μm, as desired for tissue ingrowth and vascularization. At the same time, coexisting nanopores provide high-specific surface area (>150 m2/g), which is needed for enhancing the structure's degradation rate. These bioscaffolds hold promise for applications in hard tissue engineering. |
申请公布号 |
US9321675(B2) |
申请公布日期 |
2016.04.26 |
申请号 |
US201213617293 |
申请日期 |
2012.09.14 |
申请人 |
Lehigh University |
发明人 |
Jain Himanshu |
分类号 |
C03C11/00;C03C1/00;C03C3/078;C03C4/00;C04B35/622;C03B19/06;C03B19/12;C04B38/06;C04B111/00 |
主分类号 |
C03C11/00 |
代理机构 |
Saul Ewing LLP |
代理人 |
Saul Ewing LLP |
主权项 |
1. A method of producing a biocompatible scaffold, the method comprising the steps of:
a) infiltrating a sponge template with a slurry composition, the slurry composition comprising at least one glass precursor material, wherein the glass precursor material comprises at least one nanoporous xerogel glass powder; b) optionally removing excess slurry from the sponge template; and c) heating the sponge template to a temperature and for a time sufficient to convert the slurry composition into the biocompatible scaffold comprising at least a glass, the scaffold comprises interconnected macropores, and interconnected nanopores, wherein the nanopores have an average diameter less than about 100 nm. |
地址 |
Bethlehem PA US |