摘要:
A corneal prosthesis including an optical element having an optically transparent central portion and an anterior surface capable of supporting a layer of epithelial cells, the optical element being made of optical material having water content between 50% and 90% and a tensile strength greater than 20 kg/cm.sup.2, and a porous outer skirt secured to the periphery of said element, said skirt being sufficiently porous to permit cell ingrowth and tissue attachment. Also disclosed are methods of making, seeding and using corneal implants having epithelial layers thereon and porous implant material of a coherent mass of randomly oriented fibers having an interconnected network of pores.
摘要翻译:一种角膜假体,其包括具有光学透明中心部分和能够支撑一层上皮细胞的前表面的光学元件,所述光学元件由水含量为50%至90%且抗拉强度大于20的光学材料制成 kg / cm 2,以及固定到所述元件的周边的多孔外裙,所述裙部足够多孔以允许细胞向内生长和组织附着。 还公开了制造,接种和使用其上具有上皮层的角膜植入物的方法,以及具有互连的孔网络的随机取向纤维的相干团块的多孔植入材料。
摘要:
Antimicrobial compositions, especially those useful when applied topically, particularly to mucosal tissues (i.e., mucous membranes), including, in particular, an antimicrobial lipid component, such as a fatty acid ester, fatty ether, or alkoxide derivative thereof. The compositions can also include an enhancer component, a surfactant, a hydrophobic component, and/or a hydrophilic component. Such compositions provide effective topical antimicrobial activity and are accordingly useful in the treatment and/or prevention of conditions that are caused, or aggravated by, microorganisms (including viruses).
摘要:
A holding device for seeding cells on a surface of a prosthesis including chamber means for partially defining a first chamber with the first surface, and sealing means for providing a seal between the chamber means and the prosthesis so as to isolate the seeding surface from another portion of the prosthesis.
摘要:
Methods for the manufacture of medicinal compositions are described. A method for the manufacture of a medicinal composition according to the invention comprises: (a) Providing a biocompatible polymer of the general formula —[O—R1—C(O)]n— wherein: “R1” is a linear, branched, or cyclic organic group, “n” is at least three, (b) Acylating the biocompatible polymer to provide an acylated biocompatible polymer and a mixed anhydride; (c) Reacting the mixed anhydride with a nucleophile to provide an acylated biocompatible polymer with a terminal carboxylic acid derivative capable of being chemically converted to an acid in the absence of water, (d) Converting the terminal carboxylic acid derivative to an acylated biocompatible polymer with a terminal carboxylic acid; and (e) Combining the acylated biocompatible polymer with a drug to provide the medicinal composition.
摘要:
Stability of biocompatible polymers of the formula: wherein Z is —C(O)R1; each R1 is independently selected from a linear, branched, or cyclic alkyl, alkoxy, or aryl with 1 to 18 carbon atoms optionally substituted by carbonyl, oxy, thio, and/or nitrogen; each R2 is independently selected from hydrogen or a linear or branched hydrocarbon with 1 to 4 carbon atoms; X is selected from the group consisting of —OR1, —SR1, —N(R1)2 and divalent or trivalent headgroups terminated in oxygen, nitrogen, or sulfur; y is greater than or equal to 1 and less than or equal to 3; is enhanced by providing compositions where there is a low level of —OH end group impurity, i.e., where Z is —H instead of —C(O)R1 and/or X is —OH instead of —OR1, —SR1, —N(R1)2 or divalent or trivalent headgroups terminated in —O—, —N—, or —S—, such that there are no more than 10 of these —OH end groups for every 100 intended biocompatible polymer molecules.
摘要:
A pharmaceutical aerosol formulation includes a therapeutically effective amount of particulate medicament of formula (I) or a solvate thereof, a propellant selected from the group consisting of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoro-n-propane or mixtures thereof, and a biocompatible polymer comprising one or more compounds of formula (II)
摘要:
An article comprising a substrate, and a textured, matte-finish, low adhesion backsize coating on one surface of the substrate, wherein the coating comprises polyvinyl carbamate having nitrogen-bonded hydrocarbon side chains which provide terminal alkyl groups more than five carbons in length.
摘要:
Azlactone-functional substrates, (especially hydrogels), mammalian body implants, and methods of making and using them are disclosed. The azlactone-functional substrates are the reaction product of substrates having azlactone-reactive nucleophilic surfaces and a multi-functional azlactone composition having at least two azlactone moieties, where at least one moiety covalently couples to the azlactone-reactive nucleophilic surface and at least one moiety remains available for further nucleophilic reaction, such as with a biologically active material. A preferred use of azlactone-functional hydrogel is as the optical element of a corneal prosthesis which enhances epithethial cell growth.
摘要:
A corneal prosthesis including an optical element having an optically transparent central portion and an anterior surface capable of supporting a layer of epithelial cells, the optical element being made of optical material having water content between 50% and 90% and a tensile strength greater than 20 kg/cm.sup.2, and a porous outer skirt secured to the periphery of said element, said skirt being sufficiently porous to permit cell ingrowth and tissue attachment. Also disclosed are methods of making, seeding and using corneal implants having epithelial layers thereon and porous implant material of a coherent mass of randomly oriented fibers having an interconnected network of pores.
摘要:
Methods for the manufacture of medicinal compositions are described. A method for the manufacture of a medicinal composition according to the invention comprises: (a) Providing a biocompatible polymer of the general formula —[O—R1—C(O)]n— wherein: “R1” is a linear, branched, or cyclic organic group, “n” is at least three, (b) Acylating the biocompatible polymer to provide an acylated biocompatible polymer and a mixed anhydride; (c) Reacting the mixed anhydride with a nucleophile to provide an acylated biocompatible polymer with a terminal carboxylic acid derivative capable of being chemically converted to an acid in the absence of water, (d) Converting the terminal carboxylic acid derivative to an acylated biocompatible polymer with a terminal carboxylic acid; and (e) Combining the acylated biocompatible polymer with a drug to provide the medicinal composition.
摘要翻译:描述了药物组合物的制造方法。 制备根据本发明的药物组合物的方法包括:(a)提供具有通式的生物相容性聚合物 - [OR 1 -C 2 -C(O)] n SUB >其中:“R 1”是直链,支链或环状有机基团,“n”为至少三个,(b)酰化生物相容性聚合物以提供酰化生物相容性聚合物和混合 酐; (c)用亲核试剂反应混合酸酐以提供酰化的生物相容性聚合物,其具有能够在不存在水的情况下化学转化为酸的末端羧酸衍生物; (d)将末端羧酸衍生物与末端羧酸转化成酰化生物相容性聚合物; 和(e)将酰化的生物相容性聚合物与药物组合以提供药物组合物。