Polymerizable perfluoroalkylether macromer
    1.
    发明授权
    Polymerizable perfluoroalkylether macromer 失效
    可聚合的全氟烷基醚大分子单体

    公开(公告)号:US5973089A

    公开(公告)日:1999-10-26

    申请号:US776997

    申请日:1997-12-22

    摘要: Macromonomers of the formula I are described:Q-B(L-B).sub.n T (I)wherein n is at least 1.0;Q is a polymerizable group;B may be the same or different and is a difunctional block of molecular weight in the range of from 100 to 4000 and wherein at least one B is a perfluorinated polyether of formula II;--OCH.sub.2 CF.sub.2 O(CF.sub.2 CF.sub.2 O).sub.x (CF.sub.2 O).sub.y CF.sub.2 CH.sub.2 O-- (II)wherein the CF.sub.2 CF.sub.2 O and CF.sub.2 O units may be randomly distributed or distributed as blocks throughout the chain and wherein x and y may be the same or different such that the molecular weight of the perfluorinated polyether is in the range of from 242 to 4,000;L is a difunctional linking group; andT is a terminal group.These macromonomers may be used in the production of contact lenses, corneal implants, cell growth substrate or medical implant.

    摘要翻译: PCT No.PCT / EP96 / 01256 Sec。 371 1997年12月22日第 102(e)日期1997年12月22日PCT 1996年3月22日PCT公布。 出版物WO96 / 31545 日期:1996年10月10日描述式I的共聚单体:其中n为至少1.0的Q-B(L-B)nT(I) Q是可聚合基团; B可以相同或不同,是分子量在100-4000范围内的二官能嵌段,其中至少一个B是式II的全氟化聚醚; -OCH 2 CF 2 O(CF 2 CF 2 O)x(CF 2 O)y CF 2 CH 2 O-(II ),其中CF 2 CF 2 O和CF 2 O单元可以作为整个链中的嵌段无规分布或分布,并且其中x和y可以相同或不同,使得全氟聚醚的分子量在242至4000的范围内; L是双官能连接基团; T是终端组。 这些大分子单体可用于制造隐形眼镜,角膜植入物,细胞生长底物或医用植入物。

    Corneal onlays
    4.
    发明授权
    Corneal onlays 失效
    角膜上

    公开(公告)号:US5713957A

    公开(公告)日:1998-02-03

    申请号:US646287

    申请日:1996-05-16

    IPC分类号: A61F2/14 A61L27/50

    摘要: Corneal onlays for use in surgical implantation into or onto the cornea of a mammal are described. The corneal onlays according to the invention have an optical axis region with optical characteristics which provide visual acuity therethrough and are comprised of a non-biodegradable non-hydrogel ocularly biocompatible material, characterized in that the onlay has a porosity sufficient to allow passage therethrough of tissue fluid components having a molecular fluid weight greater than 10,000 daltons so as to provide for a flux of tissue fluid between cells anterior of the implanted onlay and cells posterior thereof. The porosity of the optical axis region is such that it allows the flux of tissue fluid components whilst excluding ingrowth of ocular tissue. The onlay is further characterized by being adapted for epithelial recolonization. Also described are methods for correcting the optical property of an eye or altering the appearance thereof which comprises surgically implanting into or onto the cornea a corneal onlay as described above.

    摘要翻译: PCT No.PCT / EP94 / 03680 Sec。 371日期:1996年5月16日 102(e)日期1996年5月16日PCT 1994年11月9日PCT公布。 WO95 / 13764 PCT出版物 日期1995年5月26日描述了用于外科植入到哺乳动物角膜上或角膜上的角膜。 根据本发明的角膜嵌体具有光学特性的光轴区域,其提供通过其的视力,并且由不可生物降解的非水凝胶眼睛生物相容性材料组成,其特征在于,所述覆层具有足以允许组织通过的孔隙 流体组分具有大于10,000道尔顿的分子流体重量,以便在植入的垫层之前的细胞和其后的细胞之间提供组织液的通量。 光轴区域的孔隙度使得其允许组织流体组分的通量,同时排除眼组织的向内生长。 该垫层的特征还在于适应于上皮细胞再沉积。 还描述了用于校正眼睛的光学性质或改变其外观的方法,其包括如上所述手术植入角膜或角膜上的角膜镶嵌物。

    Corneal onlay
    5.
    发明授权
    Corneal onlay 失效
    角膜贴

    公开(公告)号:US06454800B2

    公开(公告)日:2002-09-24

    申请号:US09782346

    申请日:2001-02-12

    IPC分类号: A61F214

    CPC分类号: A61F2/145 A61F2/142

    摘要: A corneal onlay or corneal implant is disclosed which is to be placed within or onto the surface of the cornea, being a biocompatible, optically transparent, synthetic and biostable polymeric material, said material comprising a surface that supports the attachment and growth of tissue cells, and where the exterior surface of the implant onto which epithelial tissue is to be attracted and to become attached, or in the case of a corneal onlay the anterior surface of the onlay, has a topography comprising a plurality of surface indentations.

    摘要翻译: 公开了角膜镶嵌物或角膜植入物,其被放置在角膜的表面内或表面上,其是生物相容的,光学透明的,合成的和生物稳定的聚合物材料,所述材料包括支持组织细胞的附着和生长的表面, 并且其中植入物的外表面将被吸引到哪个上皮组织并被附着,或者在角膜镶嵌的情况下,该覆盖层的前表面具有包括多个表面凹陷的形貌。