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80 条记录 (耗时 0.031 秒)

    Low-profile, shape-memory surgical occluder
    73.
    发明申请
    Low-profile, shape-memory surgical occluder 失效
    低调，形状记忆的外科封堵器

    公开(公告)号：US20020072759A1

    公开(公告)日：2002-06-13

    申请号：US09930630

    申请日：2001-08-15

    发明人： William R. Fry

    IPC分类号： A61B017/08

    CPC分类号： A61B17/122 ,  A61B17/076 ,  A61B2017/00867 ,  A61B2017/2825 ,  A61F2002/30095 ,  A61F2210/0023

    摘要： A vessel-occluding clamp relies on the shape-memory effect to partially or completely occlude a blood vessel or other body lumen, including bowel, esophagus, stomach, small intestine, colon, and bile ducts. The self-actuating nature of the clamp allows the device work in tight places, be placed through trocars for minimal-access procedures, and forgo the need for conventional or specific applicators. In the preferred embodiment, a clamp according to the invention a pair of opposing jaws connected through a hinge and one or more pieces of shape-memory material associated with the jaws. The shape-memory material may be in the form of one or more wires which extend from the hinge to each jaw. The shape-memory material exhibits a transition temperature such that, when the clamp is exposed to internal body temperatures of the type experienced during a typical surgical procedure, the jaws close to close partially or completely occlude the vessel, and wherein the jaws open below the transition temperature for removal of the clamp or to restore flow through the vessel. The transition temperature is preferably such that the jaws open in the presence of cooling irrigation. Other stimuli, such as the application of an electrical current, may alternatively be used. In an alternative embodiment, a second shape memory material is used having a second transition temperature which, when reached, causes the jaws to open.

    摘要翻译： 血管闭塞夹具依赖于形状记忆效应部分或完全闭塞血管或其他体腔，包括肠，食道，胃，小肠，结肠和胆管。 夹具的自动执行特性允许设备在狭窄的位置工作，通过套管针放置以进行最小程序的访问程序，并且放弃对常规或特定施加器的需要。 在优选实施例中，根据本发明的夹具具有通过铰链连接的一对相对的夹爪和与夹爪相关联的一个或多个形状记忆材料。 形状记忆材料可以是从铰链延伸到每个钳口的一根或多根线的形式。 形状记忆材料表现出转变温度，使得当夹具暴露于在典型外科手术过程中经历的类型的体内温度时，钳口部分地靠近或完全闭合血管，并且其中钳口在下方开口 用于去除夹具的转变温度或恢复通过容器的流动。 转变温度优选使得在存在冷却冲洗的情况下夹爪打开。 可以替代地使用其他刺激，例如施加电流。 在替代实施例中，使用具有第二转变温度的第二形状记忆材料，其在到达时使得钳口打开。

    Stapling device
    79.
    发明授权
    Stapling device 失效
    装订装置

    公开(公告)号：US4550870A

    公开(公告)日：1985-11-05

    申请号：US541546

    申请日：1983-10-13

    申请人： John F. Krumme ,  Darel E. Hodgson

    发明人： John F. Krumme ,  Darel E. Hodgson

    IPC分类号： A61B17/072 ,  A61F2/00 ,  A61B17/04

    CPC分类号： A61B17/072 ,  A61B2017/07214 ,  A61F2002/30093 ,  A61F2002/30095 ,  A61F2210/0019 ,  A61F2210/0023

    摘要： A stapling device utilizes heat recoverable material (the driver) having shape memory to drive staples through materials to be joined and in one embodiment, against an anvil for crimping the ends of the staples. The heat recoverable material, preferably a metal such as Nitinol, may have heat applied by a heater mounted on at least one surface thereof or by induction or other method of heating. If a heater is mounted on a surface of the driver, upon insertion of the driver into the staple device, the heater makes electrical connection with terminals for connection to a supply circuit. In a specific embodiment staples may be provided, fabricated from heat recoveralbe metal so that each staple may carry its own heat recoverable, staple driving element. The staple tines may have a heat recoverable shape with the ends of the tines directed toward one another so that staple closure occures as heat migrates from the staple driving region to the tines thereof. Alternatively, the heat recoverable staple may complete a circuit through the staple upon contact with the anvil, thus heating the staple. Alternatively, the staples may have a heat recovered state with the ends parallel to one another so that the application of heat will open the staples and permit ready removal.

    摘要翻译： 装订装置利用具有形状记忆的热可回收材料（驱动器）来驱动订书钉通过要接合的材料，并且在一个实施例中，抵靠用于压接订书钉端部的砧座。 热可回收材料，优选金属如镍钛诺，可以通过安装在其至少一个表面上的加热器或通过感应或其它加热方法施加热量。 如果加热器安装在驱动器的表面上，则当驱动器插入订书钉装置时，加热器与端子电连接以连接到电源电路。 在具体实施例中，可以提供由热回收金属制成的订书钉，使得每个订书钉可以承载其自己的可热回收的订书钉驱动元件。 订书钉可具有可热恢复的形状，其中尖齿的端部彼此指向，使得随着热从缝钉驱动区域迁移到其尖齿时，缝合钉闭合。 或者，可热回收的订书钉可以在与砧接触时通过订书钉完成电路，从而加热订书钉。 或者，订书钉可以具有热恢复状态，其端部彼此平行，使得施加热量将打开订书钉并允许准备移除。

    Transluminally placed expandable graft prosthesis
    80.
    发明授权
    Transluminally placed expandable graft prosthesis 失效
    经放置的可扩张移植假体

    公开(公告)号：US4503569A

    公开(公告)日：1985-03-12

    申请号：US471856

    申请日：1983-03-03

    申请人： Charles T. Dotter

    发明人： Charles T. Dotter

    IPC分类号： A61B17/22 ,  A61F2/00 ,  A61F2/06 ,  A61F2/84 ,  A61F2/88 ,  A61F1/00 ,  A61B17/00

    CPC分类号： A61F2/95 ,  A61B17/22 ,  A61F2/88 ,  A61B17/221 ,  A61F2/0004 ,  A61F2/07 ,  A61F2002/30095 ,  A61F2210/0023

    摘要： A transluminally placed endovascular graft prosthesis includes a helically wound coil having a generally tubular shape and is made of a shape memory Nitinol alloy having a transition temperature in the range of 115.degree.-125.degree. F. After placement within a body blood vessel and upon heating of the prosthesis to its transition temperature, the prosthesis expands so as to become firmly anchored to the inside wall of the body blood vessel. After expansion the diameter of the lumen of the prosthesis is approximately equal to the diameter of the body blood vessel passageway. The prosthesis may also be used in other body passageways.

    摘要翻译： 平滑置换的血管内移植假体包括具有大致管状形状的螺旋缠绕的线圈，并且由转变温度在115°-125°F的形状记忆镍钛诺合金制成。放置在体内血管中并加热 的假体膨胀到其转变温度，以使其变得牢固地锚定到身体血管的内壁。 在扩张后，假体的内腔的直径近似等于身体血管通道的直径。 假体也可以用于其他身体通道。