Oxidative method for attachment of biomolecules to surfaces of medical
devices
    71.
    发明授权
    Oxidative method for attachment of biomolecules to surfaces of medical devices 失效
    将生物分子附着到医疗器械表面的氧化方法

    公开(公告)号:US5821343A

    公开(公告)日:1998-10-13

    申请号:US635187

    申请日:1996-04-25

    申请人: James R. Keogh

    发明人: James R. Keogh

    摘要: A method is provided for immobilizing a biomolecule coating on the surface of a medical device to obtain improved biocompatibility characteristics for contacting with tissue or body fluids such as blood. The method includes oxidizing a 2-aminoalcohol moiety of a material disposed on the surface with a periodate to form an aldehyde moiety, combining the aldehyde moiety with an amine moiety of a material to bond the aldehyde moiety to the amine moiety through an imine moiety and reacting the imine moiety with a reducing agent to form the coating immobilized on the surface by an amine linkage. Alternatively, the method includes providing on the surface a coating containing the materials having the 2-aminoalcohol moiety and the amine moiety, applying a periodate to oxidize the 2-aminoalcohol moiety to an aldehyde moiety, allowing the aldehyde moiety to react with the amine moiety through an imine moiety and reducing the imine moiety to form an amine linkage crosslinking the 2-aminoalcohol moiety to the amine moiety. The material containing the 2-aminoalcohol moiety or the amine moiety can be a biomolecule or a substrate surface of a medical device. Biomolecules such as proteins or peptides containing a 2-aminoalcohol moiety can be attached to an aminated surface or an aminated biomolecule can be attached to surface having a 2-aminoalcohol moiety.

    摘要翻译: 提供了一种用于将生物分子涂层固定在医疗装置的表面上以获得改善的与组织或体液如血液接触的生物相容性特征的方法。 该方法包括用高碘酸盐氧化设置在表面上的材料的2-氨基醇部分以形成醛部分,将醛部分与材料的胺部分结合,以通过亚胺部分将醛部分键合到胺部分, 使亚胺部分与还原剂反应以通过胺键形成固定在表面上的涂层。 或者,该方法包括在表面上提供含有具有2-氨基醇部分和胺部分的材料的涂层,施加高碘酸盐以将2-氨基醇部分氧化成醛部分,允许醛部分与胺部分反应 通过亚胺部分并还原亚胺部分以形成将2-氨基醇部分与胺部分交联的胺键。 含有2-氨基醇部分或胺部分的材料可以是医疗装置的生物分子或基材表面。 生物分子如含有2-氨基醇部分的蛋白质或肽可以连接到胺化的表面,或者胺化的生物分子可以连接到具有2-氨基醇部分的表面上。

    Thromboresistant material and articles
    73.
    发明授权
    Thromboresistant material and articles 失效
    防血栓材料和物品

    公开(公告)号:US5278200A

    公开(公告)日:1994-01-11

    申请号:US968796

    申请日:1992-10-30

    IPC分类号: A61L33/00 A01N1/00

    CPC分类号: A61L33/0041 A61L33/0088

    摘要: Biocompatible heparin-like material and surfaces thereof are made by co-polymerization of acrylic acid (AA) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) and attaching the copolymer to a suitable substrate or blending the copolymer into a suitable substrate. The material produced also possesses surface slip-properties and some decreased bacterial and platelet adherence.

    摘要翻译: 通过丙烯酸(AA)和2-丙烯酰氨基-2-甲基丙磺酸(AMPS)的共聚合制备生物相容性肝素样材料及其表面,并将共聚物连接到合适的底物上或将共聚物共混成合适的底物 。 所生产的材料还具有表面滑爽性,并且一些减少的细菌和血小板粘附。

    Periodate oxidative method for attachment of biomolecules to medical
device surfaces
    78.
    发明授权
    Periodate oxidative method for attachment of biomolecules to medical device surfaces 失效
    用于将生物分子附着到医疗器械表面的高碘酸氧化法

    公开(公告)号:US5945319A

    公开(公告)日:1999-08-31

    申请号:US1994

    申请日:1997-12-31

    申请人: James R. Keogh

    发明人: James R. Keogh

    摘要: Methods are provided for forming a coating of an immobilized biomolecule on a surface of a medical device to impart improved biocompatibility for contacting tissue and bodily fluids. A 2-aminoalcohol moiety of a biomolecule is oxidized with a periodate to an aldehyde moiety which is reacted with an amine moiety on the surface of a medical device to form an imine moiety, and the imine moiety is reduced to form an amine linkage immobilizing a coating of the biomolecule on the surface. In another method, a biomolecule coating containing an amine moiety and a 2-aminoalcohol moiety is immobilized on the surface of a medical device, the 2-aminoalcohol moiety is oxidized with a periodate to an aldehyde moiety which is reacted with the amine moiety to form an imine moiety, and the imine moiety is reduced to form a secondary amine and crosslink the coating. Each biomolecule may contain an amine moiety and a 2-aminoalcohol moiety, and the aldehyde moiety of one biomolecule resulting from periodate oxidation may react with the amine moiety of another biomolecule. In a further embodiment, a 2-aminoalcohol moiety on the surface of a medical device is oxidized with a periodate to an aldehyde moiety, and an amine moiety of a biomolecule is reacted with the aldehyde moiety to form an imine moiety which is reduced to form an amine linkage immobilizing the biomolecule on the surface.

    摘要翻译: 提供了用于在医疗装置的表面上形成固定的生物分子的涂层的方法,以提高用于接触组织和体液的生物相容性。 生物分子的2-氨基醇部分用高碘酸酯氧化成醛部分,其与医疗器械表面上的胺部分反应以形成亚胺部分,并且亚胺部分被还原以形成胺连接, 在表面上涂覆生物分子。 在另一种方法中,将包含胺部分和2-氨基醇部分的生物分子包被固定在医疗装置的表面上,2-氨基醇部分被高碘酸酯氧化成醛部分,其与胺部分反应形成 亚胺部分,并且亚胺部分被还原以形成仲胺并交联涂层。 每个生物分子可以含有胺部分和2-氨基醇部分,并且由高碘酸氧化产生的一个生物分子的醛部分可能与另一种生物分子的胺部分反应。 在另一个实施方案中,医疗器械表面上的2-氨基醇部分被高碘酸酯氧化成醛部分,并且生物分子的胺部分与醛部分反应以形成亚胺部分,其被还原形成 将生物分子固定在表面上的胺键。

    Oxidative method for attachment of glycoproteins or glycopeptides to
surfaces of medical devices
    79.
    发明授权
    Oxidative method for attachment of glycoproteins or glycopeptides to surfaces of medical devices 失效
    将糖蛋白或糖肽连接到医疗器械表面的氧化方法

    公开(公告)号:US5891506A

    公开(公告)日:1999-04-06

    申请号:US984922

    申请日:1997-12-04

    申请人: James R. Keogh

    发明人: James R. Keogh

    摘要: A method for making a medical device having at least one glycoprotein and/or glycopeptide immobilized on a substrate surface is provided. The method may include oxidizing 1,2 dihydroxy moieties with a periodate to form an aldehyde-functional material; combining the aldehyde-functional material with an amino-functional material to bond the two materials together through an imine moiety; and reacting the imine moiety with a reducing agent to form a secondary amine. Another method of the present invention may be employed to crosslink glycoproteins and/or glycopeptides immobilized on medical device surfaces. Additionally, one method of the present invention may be employed to crosslink glycoproteins and/or glycopeptides, thereby forming a crosslinked biomaterial or a crosslinked medical device coating.

    摘要翻译: 提供了一种用于制造具有固定在基底表面上的至少一种糖蛋白和/或糖肽的医疗装置的方法。 该方法可以包括用高碘酸盐氧化1,2-二羟基部分以形成醛官能材料; 将醛官能材料与氨基官能材料结合,通过亚胺部分将两种材料结合在一起; 并使亚胺部分与还原剂反应以形成仲胺。 可以使用本发明的另一种方法来交联固定在医疗装置表面上的糖蛋白和/或糖肽。 此外,本发明的一种方法可用于交联糖蛋白和/或糖肽,从而形成交联的生物材料或交联的医疗器械涂层。

    Fluid-assisted electrosurgical instrument with shapeable electrode
    80.
    发明授权
    Fluid-assisted electrosurgical instrument with shapeable electrode 有权
    具有可塑电极的流体辅助电外科器械

    公开(公告)号:US07967816B2

    公开(公告)日:2011-06-28

    申请号:US10056807

    申请日:2002-01-25

    IPC分类号: A61B18/18

    摘要: An electrosurgical instrument including an elongated shaft and a non-conductive handle. The shaft defines a proximal section, a distal section, and an internal lumen extending from the proximal section. The distal section forms an electrically conductive tip and defines at least one passage for distributing fluid. Further, the shaft is adapted to be transitionable from a straight state to a first bent state. The shaft is capable of independently maintaining the distinct shapes associated with the straight state and the first bent state. The handle is rigidly coupled to the proximal section of the shaft. With this in mind, an exterior surface of the shaft distal the handle and proximal the distal section is electrically non-conductive. In one preferred embodiment, the shaft is comprised of an elongated electrode body surrounded by an electrical insulator.

    摘要翻译: 一种电外科器械,包括细长轴和非导电手柄。 轴限定近端部分,远端部分和从近端部分延伸的内部内腔。 远侧部分形成导电尖端并且限定用于分配流体的至少一个通道。 此外,轴适于从直状态转变到第一弯曲状态。 轴能够独立地保持与直线状态和第一弯曲状态相关联的不同形状。 手柄刚性地联接到轴的近端部分。 考虑到这一点,远离手柄并且远离远端部分的轴的外表面是不导电的。 在一个优选实施例中,所述轴由被电绝缘体包围的细长电极体构成。