Corneal onlays
    18.
    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。

    Treatment of collagenous tissue
    20.
    发明授权
    Treatment of collagenous tissue 失效
    治疗胶原组织

    公开(公告)号:US4911710A

    公开(公告)日:1990-03-27

    申请号:US95169

    申请日:1987-07-13

    摘要: An implantable collagen-based material is prepared by (i) pretreating a collagen-based material with a member selected from the group consisting of fluorescein isothiocyanate, picrylsulphonic acid and nitrous acid, in an amount sufficient to render some of the amino acid side chains of the material unable to bind with a cross-linking agent, and (ii) reacting the pretreated collagen-based material with a cross-linking agent whereby at least some of the remaining amino acid side chains are linked together.

    摘要翻译: PCT No.PCT / AU86 / 00346 Sec。 371日期1987年7月13日 102(e)日期1987年7月13日PCT提交1986年11月13日PCT公布。 出版物WO87 / 02880 日期:1987年5月21日。可植入的基于胶原的材料通过以下步骤制备:(i)用选自异硫氰酸荧光素,苦基磺酸和亚硝酸的成员预处理胶原基材料,其量足以使一些 所述材料的氨基酸侧链不能与交联剂结合,和(ii)使经预处理的胶原基材料与交联剂反应,由此至少一些剩余的氨基酸侧链连接在一起。