发明名称 |
Nichtvernetztes Hydrogel, Verfahren zu seiner Herstellung, seine Verwendung in der Medizin oder Chirurgie, insbesondere als Augenimplantat. |
摘要 |
Non-cross-linked hydrogel, method for making it, and its uses in medicine and/or surgery, such as tubes, filaments, films, rings, implants and the like, especially in ophthalmolgy. The non-cross-linked hydrogel having a relatively high water content is made from a starting liquid composition (D) which comprises from 2 to 50 % of an acrylonitrile copolymer and of an olefinically unsaturated comonomer carrying anionic groups, optionally in salt form, the molar ratio of acrylonitrile to comonomer being between 90:10 and 100:0, a suitable solvent and a suitable non-solvent of the said copolymer, the solvent/non-solvent ratio being between 500:1 and 0.5:1 by weight, the said hydrogel having a microporous structure, an ionic capacity of between 0 and 500 mEq/kg of gel, a water content of between 50 and 98 %, and having a capacity for permanent deformation under stress, even at a temperature below 40 DEG C. |
申请公布号 |
DE68913822(D1) |
申请公布日期 |
1994.04.21 |
申请号 |
DE1989613822 |
申请日期 |
1989.04.28 |
申请人 |
INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE I.N.S.E.R.M., PARIS, FR |
发明人 |
HONIGER, JIRI, F-94800 VILLEJUIF, FR;LAROCHE, LAURENT, F-75020 PARIS, FR |
分类号 |
A61L27/00;A61F2/14;A61L27/16;A61L27/52;C08L33/20 |
主分类号 |
A61L27/00 |
代理机构 |
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地址 |
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