发明名称 |
Fragmented hydrogels |
摘要 |
Fragmented polysaccharide based hydrogel compositions and methods of making and using the same are provided. The subject polysaccharide based hydrogel compositions are prepared by combining a polysaccharide component with a hydrophilic polymer and a cross-linking agent. Also provided are kits and systems for use in preparing the subject compositions. |
申请公布号 |
US8795727(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US201013505684 |
申请日期 |
2010.11.05 |
申请人 |
SpotLight Technology Partners LLC |
发明人 |
Gong Glen;Pai Suresh Subraya;Sershen Scott Robert |
分类号 |
A61K9/14 |
主分类号 |
A61K9/14 |
代理机构 |
Bozicevic, Field & Francis LLP |
代理人 |
Baba Edward J.;Bozicevic, Field & Francis LLP |
主权项 |
1. A method of making a fragmented hydrogel composition, comprising:
combining in an alkaline solution of at least 30 mM chitosan, carboxymethylcellulose, carboxymethylchitosan, or a derivative thereof with a molecular weight of less than or equal to 5000 Dalton, a degree of deacetylation of 30% to 100%, a degree of deacetylation greater than or equal to 70%, and a multi-armed polyethylene glycol with a molecular weight of 10,000 Dalton to 30,000 Dalton and at least two nucleophilic groups; combining a multi-armed polyethylene glycol with a molecular weight of 10,000 Dalton to 30,000 Dalton and at least two eletrophilic groups with an aqueous solution; combining the alkaline and aqueous solution; allowing the hydrogel composition to substantially cure; drying the substantially cured hydrogel composition under elevated temperature and reduced pressure; and fragmenting the dry hydrogel composition by cryogenic grinding or cryogenic milling. |
地址 |
Los Altos CA US |