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    • 2. 发明申请
    • ANTIBACTERIAL SURFACE AND METHOD OF FABRICATION
    • 抗菌表面和制造方法
    • WO2010094212A2
    • 2010-08-26
    • PCT/CN2010000216
    • 2010-02-18
    • VERSITECH LTDUNIV CITY HONG KONGYEUNG WAIKWOK KELVINCHEUNG MANCHEELUK DIPKEI KEITHYEUNG CHEYANKAO YITSUN RICHARDCHU KIMHO PAUL
    • YEUNG WAIKWOK KELVINCHEUNG MANCHEELUK DIPKEI KEITHYEUNG CHEYANKAO YITSUN RICHARDCHU KIMHO PAUL
    • A61L27/34
    • A61L27/06A61L27/34A61L27/54A61L2300/25A61L2300/404A61L2300/602A61L2300/606C08L89/00
    • This invention involves a plasma treated and controllable release antimicrobial peptide coated titanium alloy for surgical implantation, where the alloy with antimicrobial properties is fabricated using surface techniques without adversely compromising its biocompatibility and original mechanical properties. The surface techniques form antimicrobial layers on the alloy capable of resisting microbial adhesion and proliferation, while allowing mammalian cell adhesion and proliferation when the alloy is implanted to human body. In one embodiment, PIII&D is applied to incorporate ions, electrons, free radicals, atoms or molecules on a titanium alloy substrate. A pressurized hydrothermal treatment can be carried out to establish reactive functional groups for antimicrobial purpose or for connecting the substrate and external antimicrobial molecules. An outermost layer of the titanium alloy includes antibacterial peptides possessing a controllable release mechanism, and is fabricated alone or in an assembly of the aforementioned basal surface layers. The controllable release mechanism is able to withstand long-term deep tissue infection after surgery, and in an embodiment comprises APTES as a linker molecule.
    • 本发明涉及用于手术植入的等离子体处理和可控释放的抗微生物肽包被的钛合金,其中具有抗微生物性质的合金使用表面技术制造而不会不利地损害其生物相容性和原始机械性能。 表面技术在能够抵抗微生物粘附和增殖的合金上形成抗微生物层,同时当将合金植入人体时允许哺乳动物细胞粘附和增殖。 在一个实施方案中,应用PIII和D将离子,电子,自由基,原子或分子结合到钛合金基底上。 可以进行加压水热处理以建立用于抗微生物目的的反应性官能团或用于连接底物和外部抗微生物分子。 钛合金的最外层包括具有可控释放机构的抗菌肽,并且单独制造或在上述基础表面层的组装中制造。 可释放机制能够经受手术后的长期深部组织感染,并且在一个实施方案中包含作为连接分子的APTES。
    • 3. 发明申请
    • STRONTIUM FORTIFIED CALCIUM NANO- AND MICROPARTICLE COMPOSITIONS AND METHODS OF MAKING AND USING THEREOF
    • 高分子量的纳米和微晶组合物及其制备和使用方法
    • WO2009000158A1
    • 2008-12-31
    • PCT/CN2008/001211
    • 2008-06-23
    • THE UNIVERSITY OF HONG KONGLU, Weijia, WilliamLI, ZhaoyangLAM, Wingmoon, RaymondLUK, Dipkei, Keith
    • LU, Weijia, WilliamLI, ZhaoyangLAM, Wingmoon, RaymondLUK, Dipkei, Keith
    • A61L27/12A61L27/32A61L31/02A61K6/033C01B25/32C25D13/02
    • A61K9/1611A61K9/141A61K9/143A61K33/24A61L24/0068A61L27/306A61L27/50A61L2400/12
    • Compositions containing strontium fortified calcium nanoparticles and/or microparticles, and methods of making and using thereof are described herein. The strontium fortified calcium compounds contain calcium ions, calcium atoms, strontium ions, strontium atoms, and combinations thereof and one or more anions. Exemplary anions include, but are not limited to, citrate, phosphate, carbonate, and combinations thereof. The particles can be formulated for enteral or parenteral administration by incorporating the particles into a pharmaceutically carrier. The compositions can further contain one or more active agents useful for bone diseases or disorders, such as vitamin D, growth factors, and combinations thereof. The compositions can be used to treat or prevent one or more bone diseases or disorders of the bone, such as osteoporosis. Alternatively, the particles can be coated onto a substrate, such as the surface of an implant. The coatings can be used to improved biocompatibility of the implant, prevent loosening of the implant, reducing leaching of metal ions from metallic implants, and reduce corrosion. The coatings can be applied to the substrate using a variety of techniques well known in the art. In one embodiment, the coating is applied using electrophoretic deposition. The use of nano- and/or microparticles that provide high surface area helps to improve interfacial strength between the coating and the implant, which allows for the use of lower sintering temperatures. Lowering sintering temperatures minimizes or prevents thermal decomposition of the coating material and/or degradation of the implant material.
    • 包含锶强化钙纳米颗粒和/或微粒的组合物及其制备和使用方法在本文中描述。 锶强化钙化合物含有钙离子,钙原子,锶离子,锶原子及其组合以及一种或多种阴离子。 示例性的阴离子包括但不限于柠檬酸盐,磷酸盐,碳酸盐及其组合。 可以通过将颗粒并入药物载体中来将颗粒配制成肠或肠胃外给药。 所述组合物还可含有一种或多种用于骨疾病或病症的活性剂,例如维生素D,生长因子及其组合。 组合物可用于治疗或预防骨骼的一种或多种骨骼疾病或病症,例如骨质疏松症。 或者,可以将颗粒涂覆到基底上,例如植入物的表面。 涂层可用于改善植入物的生物相容性,防止植入物松动,减少金属离子从金属植入物中浸出,并减少腐蚀。 可以使用本领域众所周知的各种技术将涂层施加到基底上。 在一个实施方案中,使用电泳沉积施加涂层。 提供高表面积的纳米和/或微粒的使用有助于提高涂层和植入物之间的界面强度,这允许使用较低的烧结温度。 降低烧结温度可以最小化或防止涂层材料的热分解和/或植入材料的退化。