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121 条记录 (耗时 0.025 秒)

    Ratcheting stent
    71.
    发明授权
    Ratcheting stent 失效
    棘轮支架

    公开(公告)号：US5441515A

    公开(公告)日：1995-08-15

    申请号：US52410

    申请日：1993-04-23

    申请人： Farhad Khosravi ,  Michael S. Williams

    发明人： Farhad Khosravi ,  Michael S. Williams

    IPC分类号： A61F2/00 ,  A61F2/02 ,  A61F2/92 ,  A61M29/00 ,  A61F2/06

    CPC分类号： A61F2/93 ,  A61F2/07 ,  A61F2/958 ,  A61F2210/0004 ,  A61F2250/0067

    摘要： An intravascular stent comprising a cylindrical sheet having overlapplng edges that interlock. The edges have a series of protrusions and apertures that interlock and ratchet as the stent expands to an open position to support a section of arterial wall. The stent may be expanded by a balloon catheter or it may be self-expanding. The stent is biocompatible, may be bio-erodible, and capable of localized drug delivery.A plurality of retaining members to keep the stent open are disclosed. In one embodiment a buckle fastening member is used, while in another embodiment a helical seam containing projections is employed. The stent may be wound in such a manner that during expansion of the stent one side of the sheet comprising the stent desires to return to its original shape, creating a bias. In addition, a variety of reticulated structure stents are disclosed, with novel geometric patterns that aid in increased flexibility while preserving radial strength and also allow blood-tissue interaction and side branch access.The intravascular stent may be made of a sheet of material strengthened and stiffened by pyrolytic carbon or by structural reinforcement as in composite laminates.

    摘要翻译： 一种血管内支架，其包括具有互锁的重叠边缘的圆柱形片。 边缘具有一系列突起和孔，当支架膨胀到打开位置以支撑动脉壁的一部分时，其互锁并棘轮。 支架可以通过气囊导管扩张，或者可以是自扩张的。 支架是生物相容的，可以是生物可蚀刻的，并且能够局部药物递送。 公开了保持支架打开的多个保持构件。 在一个实施例中，使用带扣紧固构件，而在另一实施例中采用了包含凸起的螺旋缝。 支架可以以这样的方式被卷绕，即在支架膨胀期间，包括支架的片的一侧期望返回其原始形状，产生偏压。 此外，公开了各种网状结构支架，其具有新颖的几何图案，其有助于增加柔性，同时保持径向强度并且还允许血液 - 组织相互作用和侧分支进入。 血管内支架可以由通过热解碳强化和加固的材料制成，或者通过结构加强制成，如在复合层压板中。

    Dual-wavelength low-power built-in-test for a laser-initiated ordnance system
    73.
    发明授权
    Dual-wavelength low-power built-in-test for a laser-initiated ordnance system 失效
    用于激光发射的弹药系统的双波长低功耗内置测试

    公开(公告)号：US5359192A

    公开(公告)日：1994-10-25

    申请号：US896218

    申请日：1992-06-10

    申请人： Michael S. Williams ,  Jeffrey M. Moser ,  Helen V. Gourley

    发明人： Michael S. Williams ,  Jeffrey M. Moser ,  Helen V. Gourley

    IPC分类号： F42B3/113 ,  G01M11/00 ,  G02B5/14

    CPC分类号： F42B3/113 ,  G01M11/31 ,  G01M11/3127

    摘要： The optical continuity of a fiber optic conduit is tested by terminating the fiber optic conduit with an element having a wavelength-dependent coefficient of reflectivity, coupling to the fiber optic conduit light of a first wavelength band, detecting light in the first wavelength band reflected back through the fiber optic conduit, coupling to the fiber optic conduit light of a second wavelength band, and detecting light in the second wavelength band reflected back through the fiber optic conduit. A relative comparison is formed of light in the first wavelength band reflected back through the fiber optic conduit and light in the second wavelength band reflected back through the fiber optic conduit. Reliable continuity testing of a fiber optic conduit including multiple in-line connectors is thereby made possible.

    摘要翻译： 通过用具有波长依赖的反射系数的元件端接光纤导管来测试光纤导管的光学连续性，耦合到第一波长带的光纤导管光，检测反射回的第一波长带中的光 通过光纤导管耦合到第二波长带的光纤导管的光，并且检测通过光纤导管反射的第二波长带中的光。 相对比较由通过光纤导管反射回的第一波长带中的光和通过光纤导管反射回的第二波长带中的光形成。 由此可以实现包括多个在线连接器的光纤导管的可靠的连续性测试。

    Neuromodulation Systems and Methods for Treating Epilepsy
    80.
    发明申请
    Neuromodulation Systems and Methods for Treating Epilepsy 审中-公开
    神经调节系统和治疗癫痫的方法

    公开(公告)号：US20130166006A1

    公开(公告)日：2013-06-27

    申请号：US13530093

    申请日：2012-06-21

    申请人： Michael S. Williams

    发明人： Michael S. Williams

    IPC分类号： A61N1/05

    CPC分类号： A61N1/0551 ,  A61N1/36064

    摘要： A neuromodulation system for treating epilepsy provides therapeutic elements for modulating nerve activity to prevent or diminish (e.g. through reduced intensity or shortened duration) epileptic seizures. The therapeutic elements may be positioned in the vasculature of the patient and are energized to modulate nerve fibers positioned outside the vascular walls. Electrode positions may include the maxillary vein, inferior alveolar vein, lingual vein, retromandibular or facial vein, or the emissary vein of the foramen ovale. Target nerves include the mandibular branch (V3) of the trigeminal nerve, or a branch of the mandibular branch (e.g. the inferior alveolar nerve).

    摘要翻译： 用于治疗癫痫的神经调节系统提供用于调节神经活动以防止或减少（例如通过减少强度或缩短持续时间）癫痫发作的治疗元件。 治疗元件可以定位在患者的脉管系统中并被激发以调节位于血管壁外部的神经纤维。 电极位置可能包括上颌静脉，下肺泡静脉，舌静脉，下颌下垂或面部静脉，或卵圆孔的使用静脉。 目标神经包括三叉神经的下颌支（V3），或下颌支的分支（例如下牙槽神经）。