STENTED TRANSCATHETER PROSTHETIC HEART VALVE DELIVERY SYSTEM AND METHOD

    公开(公告)号:US20110098804A1

    公开(公告)日:2011-04-28

    申请号:US12886975

    申请日:2010-09-21

    IPC分类号: A61F2/24

    摘要: A percutaneous stented valve delivery device including an inner shaft, a sheath, and a delivery capsule. The sheath slidably receives the inner shaft. A capsule proximal zone is attached to the sheath. A capsule distal zone is configured to transition between normal and flared states. A diameter of the distal zone is greater in the flared state, and the capsule includes a shape memory component that naturally assumes the normal state. The device is operable to perform a reversible partial deployment procedure in which a portion of the prosthesis is exposed distal the capsule and allowed to radially expand. Subsequently, with distal advancement of the capsule, the distal zone transitions to the flared state and imparts a collapsing force onto the prosthesis, causing the prosthesis to radially collapse and become recaptured within the delivery capsule. The capsule can include a laser cut tube encapsulated by a polymer.

    摘要翻译: 一种经皮支架置入的瓣膜输送装置,包括内轴,护套和输送胶囊。 护套可滑动地容纳内轴。 胶囊近端区域附接到护套。 胶囊远端区域被配置为在正常和扩张状态之间转变。 远端区域的直径在扩张状态下较大,并且胶囊包括自然地呈现正常状态的形状记忆组件。 该装置可操作以执行可逆部分展开过程,其中假体的一部分暴露在胶囊的远端并允许径向扩张。 随后,随着胶囊的远端前进,远侧区域转变到扩张状态并且将塌陷力施加到假体上,导致假体径向折叠并在输送胶囊内重新捕获。 胶囊可以包括由聚合物包封的激光切割管。

    Impact resistant polyester blends
    77.
    发明授权
    Impact resistant polyester blends 失效
    耐冲击聚苯乙烯

    公开(公告)号:US5162416A

    公开(公告)日:1992-11-10

    申请号:US325253

    申请日:1989-03-17

    申请人: Kishore Udipi

    发明人: Kishore Udipi

    CPC分类号: C08K5/098 C08L51/04 C08L67/02

    摘要: Impact resistant polymer blends of crystallizable polyester, e.g. PET, and styrene copolymer graft rubber composition, e.g. ABS, and an impact modifying amount of a mixture of a fatty acid salt, e.g. sodium stearate, and an acid copolymer, e.g. SMA, are useful as engineering thermoplastics, e.g. for injection molding of articles requiring high impact resistance.

    摘要翻译: 可结晶聚酯的耐冲击聚合物共混物,例如 PET和苯乙烯共聚物接枝橡胶组合物,例如 ABS和抗冲击改性量的脂肪酸盐的混合物,例如, 硬脂酸钠和酸共聚物,例如, SMA可用作工程热塑性塑料,例如 用于需要高抗冲击性的制品的注射成型。

    Lactones from gamma-hydroxy acids as coupling agents
    79.
    发明授权
    Lactones from gamma-hydroxy acids as coupling agents 失效
    来自γ-羟基酸的内酯作为偶联剂

    公开(公告)号:US4308364A

    公开(公告)日:1981-12-29

    申请号:US199763

    申请日:1980-10-23

    申请人: Kishore Udipi

    发明人: Kishore Udipi

    CPC分类号: C08F8/16

    摘要: Lactones derived from gamma-hydroxy acids are employed as coupling agents for polymers derived from alkali metal-initiated polymerizations. These coupling agents provide effective coupling without formation of undesirable by-products.

    摘要翻译: 衍生自γ-羟基酸的内酯被用作来自碱金属引发聚合的聚合物的偶联剂。 这些偶联剂提供有效的偶联而不形成不期望的副产物。

    Polymer epoxidation process
    80.
    发明授权
    Polymer epoxidation process 失效
    聚合物环氧化工艺

    公开(公告)号:US4131725A

    公开(公告)日:1978-12-26

    申请号:US822780

    申请日:1977-08-08

    申请人: Kishore Udipi

    发明人: Kishore Udipi

    IPC分类号: C08C19/06 C08F8/08

    摘要: An improved process for the production of epoxidized rubbery polymers substantially free of gel which comprises carrying out the epoxidation in an aliphatic or alicyclic hydrocarbon diluent with hydrogen peroxide and a mixture of formic acid and at least one other low molecular weight monocarboxylic acid.

    摘要翻译: 一种用于生产基本上不含凝胶的环氧化橡胶状聚合物的改进方法,其包括用过氧化氢和甲酸与至少一种其它低分子量单羧酸的混合物在脂族或脂环族烃稀释剂中进行环氧化。