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    • 32. 发明申请
    • Strain-hardened interpenetrating polymer network hydrogel
    • 应变硬化互穿聚合物网络水凝胶
    • US20080269370A1
    • 2008-10-30
    • US12070336
    • 2008-02-15
    • David MyungLaura HartmanJean NoolandiChristopher N. TaCurtis W. Frank
    • David MyungLaura HartmanJean NoolandiChristopher N. TaCurtis W. Frank
    • G02B1/04
    • A61K47/48784A61K47/58A61K47/60A61K47/6903A61L27/38A61L27/52
    • A strain-hardened interpenetrating polymer network (IPN) hydrogel is provided. The interpenetrating polymer network hydrogel is based on two different networks. The first network is a non-silicone network of preformed hydrophilic non-ionic telechelic macromonomers chemically cross-linked by polymerization of its end-groups. The second network is a non-silicone network of ionizable monomers. The second network has been polymerized and chemically cross-linked in the presence of the first network and has formed physical cross-links with the first network. An aqueous salt solution having a neutral pH is used to ionize and swell the second network in the interpenetrating polymer network. The swelling of the second network is constrained by the first network, and this constraining effect results in an increase in effective physical cross-links within the interpenetrating polymer network, and, in turn, an increase its elastic modulus. The strain-hardened interpenetrating polymer network hydrogel is attractive and useful for medical, industrial, and personal hygiene purposes.
    • 提供了应变硬化的互穿聚合物网络(IPN)水凝胶。 互穿聚合物网络水凝胶基于两个不同的网络。 第一个网络是通过其端基聚合化学交联的预制亲水非离子遥爪大分子单体的非硅氧烷网络。 第二个网络是可离子化单体的无硅网络。 第二网络已经在第一网络的存在下被聚合和化学交联,并且与第一网络形成了物理交叉连接。 使用具有中性pH的盐水溶液使互穿聚合物网络中的第二网络离子化并溶胀。 第二网络的膨胀由第一网络约束,并且这种约束效应导致互穿聚合物网络内的有效物理交联的增加,并且进而增加其弹性模量。 应变硬化的互穿聚合物网络水凝胶对于医疗,工业和个人卫生目的是有吸引力和有用的。
    • 34. 发明申请
    • Artificial cornea
    • 人造角膜
    • US20060287721A1
    • 2006-12-21
    • US11409218
    • 2006-04-20
    • David MyungChristopher TaNabeel FarooquiCurtis FrankWon-Gun KohJungmin KoJaan NoolandiMichael Carrasco
    • David MyungChristopher TaNabeel FarooquiCurtis FrankWon-Gun KohJungmin KoJaan NoolandiMichael Carrasco
    • A61F2/14
    • A61F2/142A61F2/15A61K35/12
    • The present invention provides an artificial corneal implant having an optically clear central core and a porous, hydrophilic, biocompatible skirt peripheral to the central core. In one embodiment, the central core is made of an interpenetrating double network hydrogel and the skirt is made of poly(2-hydroxyethyl acrylate) (PHEA). In another embodiment, both the central core and the skirt are made of interpenetrating double network hydrogels. The artificial corneal implant may also have an interdiffusion zone in which the skirt component is interpenetrated with the core component, or vice versa. In a preferred embodiment, biomolecules are linked to the skirt, central core or both. These biomolecules may be any type of biomolecule, but are preferably biomolecules that support epithelial and/or fibroblast cell survival and growth. Preferably, the biomolecules are linked in a spatially selective manner. The present invention also provides a method of making an artificial corneal implant using photolithography.
    • 本发明提供了一种人造角膜植入物,其具有光学透明的中心纤芯和围绕中心纤芯的多孔,亲水的,生物相容的裙部。 在一个实施方案中,中心芯由互穿双网络水凝胶制成,裙部由聚(丙烯酸2-羟乙酯)(PHEA)制成。 在另一个实施例中,中心芯和裙部均由互穿双网络水凝胶制成。 人造角膜植入物也可以具有相互扩散区​​域,其中裙部组件与芯部件互穿,反之亦然。 在优选的实施方案中,生物分子连接到裙部,中心芯或两者。 这些生物分子可以是任何类型的生物分子,但优选支持上皮和/或成纤维细胞存活和生长的生物分子。 优选地,生物分子以空间选择性方式连接。 本发明还提供了使用光刻法制造人造角膜植入物的方法。
    • 39. 发明申请
    • Interpenetrating polymer network hydrogel contact lenses
    • 互穿聚合物网络水凝胶隐形眼镜
    • US20070126982A1
    • 2007-06-07
    • US11636114
    • 2006-12-07
    • David MyungJaan NoolandiChristopher TaCurtis Frank
    • David MyungJaan NoolandiChristopher TaCurtis Frank
    • G02C7/04
    • G02B1/043C08L51/08
    • The present invention provides interpenetrating polymer network hydrogels that have high oxygen permeability, strength, water content, and resistance to protein adsorption. The hydrogels include two interpenetrating polymer networks. The first polymer network is based on a hydrophilic telechelic macromonomer. The second polymer network is based on a hydrophilic monomer. The hydrophilic monomer is polymerized and cross-linked to form the second polymer network in the presence of the first polymer network. The telechelic macromonomer preferably has a molecular weight of between about 575 Da and about 20,000 Da. Mixtures of molecular weights may also be used. In a preferred embodiment, the hydrophilic telechelic macromonomer is PEG-diacrylate or PEG-dimethacrylate and the hydrophilic monomer is an acrylic-based monomer. The material is designed to serve as a contact lens.
    • 本发明提供了具有高透氧性,强度,含水量和耐蛋白质吸附性的互穿聚合物网状水凝胶。 水凝胶包括两个互穿聚合物网络。 第一个聚合物网络是基于亲水的遥爪大分子单体。 第二聚合物网络基于亲水性单体。 在第一聚合物网络的存在下,亲水单体聚合并交联以形成第二聚合物网络。 遥爪大分子单体的分子量优选为约575Da至约20,000Da。 也可以使用分子量的混合物。 在优选的实施方案中,亲水遥爪大分子单体是PEG-二丙烯酸酯或PEG-二甲基丙烯酸酯,亲水性单体是丙烯酸类单体。 该材料被设计成用作隐形眼镜。