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57 条记录 (耗时 0.025 秒)

    Precurved, dual curve cardiac introducer sheath
    22.
    发明授权
    Precurved, dual curve cardiac introducer sheath 失效
    双曲线心脏引导器鞘

    公开(公告)号：US6066126A

    公开(公告)日：2000-05-23

    申请号：US993217

    申请日：1997-12-18

    申请人： Hong Li ,  John W. Gaiser

    发明人： Hong Li ,  John W. Gaiser

    IPC分类号： A61M25/00 ,  A61M25/06

    CPC分类号： A61M25/0041 ,  A61M25/0662

    摘要： A precurved cardiac introducer sheath (4) includes an elongate, hollow body having main and tip portions (24, 22). The tip portion includes first through fifth segments (26, 28, 30, 32, 34). The first, second, and third segments lie in a first plane (36) while the fourth and fifth segments lie in a second plane (38) oriented at a second angle (37) of about .+-.10 to 170.degree. to the first plane. The second segment defines an arc extending along a first, included angle of about 90-110.degree. while the fourth segment defines an arc extending along a third, included angle of about 90-140.degree. . The first, third, and fifth segments are preferably generally straight segments. The precurved introducer sheath is preferably configured to direct the electrophysiology catheter (18) directly at the posterior region (52) of the left atrium (40). The precurved introducer sheath is preferably housed within an outer introducer sheath (46) having a radially deflectable distal end (46), or a fixed distal curve.

    摘要翻译： 一种预先安装的心脏引导器护套（4）包括具有主和末端部分（24,22）的细长的中空体。 尖端部分包括第一至第五段（26,28,30,32,34）。 第一，第二和第三段位于第一平面（36）中，而第四和第五段位于第二平面（38）中，第二平面（38）以大约+/- 10至170°的第二角度（37）定向， 飞机 第二段限定沿着第一夹角约90-110°延伸的弧，而第四段限定沿第三夹角约90-140°延伸的弧。 第一，第三和第五段优选地是大致直段。 优选的引导器护套优选地构造成直接在左心房（40）的后部区域（52）处引导电生理学导管（18）。 优选的引导器护套优选地容纳在具有可径向偏转的远端（46）或固定远端曲线的外引导器护套（46）内。

    Multiple sensor, temperature controlled R-F ablation system
    23.
    发明授权
    Multiple sensor, temperature controlled R-F ablation system 失效
    多传感器，温度控制R-F消融系统

    公开(公告)号：US5957961A

    公开(公告)日：1999-09-28

    申请号：US5405

    申请日：1998-01-09

    申请人： Mark A. Maguire ,  Kevin C. Ladd ,  John W. Gaiser ,  Le T. Le

    发明人： Mark A. Maguire ,  Kevin C. Ladd ,  John W. Gaiser ,  Le T. Le

    IPC分类号： A61B5/042 ,  A61B17/00 ,  A61B18/00 ,  A61B18/14 ,  A61M25/01 ,  A61N1/08

    CPC分类号： A61M25/0138 ,  A61B18/1492 ,  A61B5/0422 ,  A61B5/6855 ,  A61B5/6857 ,  A61B5/6859 ,  A61M25/0147 ,  A61B2017/00101 ,  A61B2018/00351 ,  A61B2018/00577 ,  A61B2018/00654 ,  A61B2018/00702 ,  A61B2018/00761 ,  A61B2018/00791 ,  A61B2018/00797 ,  A61B2018/00821 ,  A61B2018/00839 ,  A61B2018/00916 ,  A61B2018/1226 ,  A61B2018/124 ,  A61B2018/1273 ,  A61B2018/1861 ,  A61B2562/0209 ,  A61B2562/043 ,  A61M2025/015 ,  A61M2025/0161

    摘要： A catheter ablation system including a catheter having a distal segment carrying at least one electrode extending along the segment and having a number of temperature sensors arranged along the distal segment adjacent the electrode, each providing an output indicative of temperature. The catheter is coupled to a power source which provides R-F energy to the electrode and with temperature processing circuitry coupled to the temperature sensors and the power source which controls power output from the power source as a function of the outputs of the temperature sensors. In a preferred embodiment, the temperature processing circuitry includes circuitry for comparing the temperature indicated by the temperature sensors to a known reference sensor and circuitry for disabling subsequent use of an output of one of the sensors if the output from the sensor differs from the referenced temperature by more than a defined value. In an alternative preferred embodiment, the temperature processing circuitry includes circuitry responsive to the rate of change of the output of the temperature sensors and circuitry for disabling a sensor if the output of the sensor changes at a rate greater than a defined referenced rate of change.

    摘要翻译： 一种导管消融系统，其包括具有远端段的导管，所述远端段承载沿着所述段延伸的至少一个电极，并且具有沿着与所述电极相邻的远侧段布置的多个温度传感器，每个提供指示温度的输出。 导管耦合到电源，该电源为电极提供R-F能量，并且具有耦合到温度传感器的温度处理电路和控制从电源输出的功率作为温度传感器输出的功能的电源。 在优选实施例中，温度处理电路包括用于将由温度传感器指示的温度与已知参考传感器和用于如果传感器的输出与参考温度不同的随后使用传感器之一的输出的电路进行比较的电路 超过定义的值。 在替代的优选实施例中，温度处理电路包括响应于温度传感器的输出的变化速率和用于在传感器的输出以大于所定义的参考变化率的速率变化的情况下禁用传感器的电路的电路。

    Injection molding apparatus
    24.
    发明授权
    Injection molding apparatus 失效
    注塑设备

    公开(公告)号：US4395222A

    公开(公告)日：1983-07-26

    申请号：US263841

    申请日：1981-05-15

    申请人： William R. Gaiser ,  John W. Gaiser

    发明人： William R. Gaiser ,  John W. Gaiser

    IPC分类号： B29C45/27 ,  B29C45/73 ,  B29F1/00

    CPC分类号： B29C45/2738 ,  B29C45/2725 ,  B29C45/7312

    摘要： An injection molding apparatus includes an injector portion which includes a plurality of mold cavity modules each having a plurality of cavities cooled by fluid flowing through a plurality of cooling channels which communicates with a common coolant manifold. Each mold cavity module is supplied with molten plastic material by a separate manifold which consists of an elongated shell having an exterior surface defining at least one inlet sprue communicating with a source of plastic and a plurality of outlet gates each communicating with a cavity of the mold module, a tubular heating element positioned within the shell for heating the interior portion of the shell, and a plurality of runners extending from the inlet sprue to the outlet gates and spiral about the heating rod so that molten plastic material may flow from the inlet sprue through the runners to the outlet gates and receive heat energy from the heating rod.

    摘要翻译： 注射成型设备包括喷射器部分，该喷射器部分包括多个模腔模块，每个模腔模块具有由流体流过多个冷却通道冷却的多个空腔，多个冷却通道与公共冷却剂歧管连通。 每个模腔模块通过单独的歧管供应熔融的塑料材料，该歧管由细长的壳体组成，细长的外壳具有外表面，外表面限定了与塑料源连通的至少一个入口浇口和多个出口浇口，每个出口浇口与模具的空腔连通 模块，定位在外壳内的管状加热元件，用于加热外壳的内部;以及多个流道，其从入口浇口延伸到出口浇口，围绕加热棒旋转，使得熔融的塑料材料可以从入口流道 通过流道到出口门并从加热棒接收热能。

    Left atrium ablation catheter and method
    29.
    发明授权
    Left atrium ablation catheter and method 有权
    左心房消融导管及方法

    公开(公告)号：US06241728B1

    公开(公告)日：2001-06-05

    申请号：US09395123

    申请日：1999-09-14

    申请人： John W. Gaiser ,  Hong Li

    发明人： John W. Gaiser ,  Hong Li

    IPC分类号： A61B1814

    CPC分类号： A61B18/1492 ,  A61B18/1815 ,  A61B2017/003 ,  A61B2017/00867 ,  A61B2018/00577 ,  A61B2018/1253 ,  A61B2018/1467 ,  C08L2201/12

    摘要： A left atrium ablation catheter (4), including a sheath (8) and a deflectable electrophysiology catheter (10) housed within the sheath, is used to ablate coronary tissue at a target site within the left atrium (LA) of a heart. The electrophysiology catheter has ablation electrodes (24) along the tip (10). The ablation catheter is introduced into the right atrium (RA) through either the superior vena cava (SVC) or the inferior vena cava (IVC). The distal open end of the sheath is guided through a punctured hole in the interatrial septum and into the left atrium. The distal end (20) of the sheath is either precurved or is steerable so the electrode tip can be directed to the coronary target site in the left atrium. The electrode tip is sized and configured to create the desired lesion at the target site without movement of the electrode tip.

    摘要翻译： 包括护套（8）和容纳在护套内的可偏转电生理学导管（10）的左心房消融导管（4）用于在心脏的左心房（LA）内的靶位置消融冠状组织。 电生理学导管具有沿尖端（10）的消融电极（24）。 消融导管通过上腔静脉（SVC）或下腔静脉（IVC）引入右心房（RA）。 护套的远端开口端引导穿过房间隔中的穿刺孔并进入左心房。 鞘的远端（20）是预先的或是可操纵的，使得电极尖端可以被引导到左心房中的冠状动脉靶位点。 电极头的尺寸和构造可以在靶位置产生所需的损伤，而不会移动电极尖端。

    Dilatation catheter assembly with heated balloon
    30.
    发明授权
    Dilatation catheter assembly with heated balloon 失效
    带加热气球的排气管总成

    公开(公告)号：US5114423A

    公开(公告)日：1992-05-19

    申请号：US521337

    申请日：1990-05-09

    申请人： Daniel J. Kasprzyk ,  Jean C. Orth ,  John W. Gaiser ,  Russell A. Houser

    发明人： Daniel J. Kasprzyk ,  Jean C. Orth ,  John W. Gaiser ,  Russell A. Houser

    IPC分类号： A61B18/00 ,  A61B17/00 ,  A61B17/22 ,  A61B18/08 ,  A61B18/12 ,  A61F7/12 ,  A61M25/00 ,  A61M29/02

    CPC分类号： A61M25/104 ,  A61B18/08 ,  A61B18/082 ,  A61B2017/22001 ,  A61B2017/22002 ,  A61M2025/1075 ,  A61M2025/1097 ,  A61M29/02

    摘要： A balloon dilatation catheter having heating elements raise the temperature of the working surface of the balloon while the balloon is being inflated during an angioplasty procedure. In one embodiment, the balloon is provided with a thin electrically conductive layer in heat transfer relationship therewith preferably on the interior surface of the balloon. Electrical power at radio frequencies is preferred and a coaxial cable is employed to deliver such power to a conductive layer for heating the balloon. In another embodiment, the ballon itself is formed of electrically conductive material. A perfusion lumen may be provided through the balloon with one or more proximal inlet ports and one or more distal discharge ports in fluid communication with the lumen to allow blood to pass through the balloon when it is inflated during angioplasty procedures. This faciltiates the flow of oxygenated blood distally of the catheter when the balloon is inflated thus allowing for extended balloon inflations, e.g., up to 30 minutes or more. The catheter assembly may also be employed to treat myocardial infarction by dilating thrombotic occlusions.

    摘要翻译： 具有加热元件的球囊扩张导管在血管成形术过程期间气囊膨胀时提高了球囊的工作表面的温度。 在一个实施例中，球囊设置有与传热关系的薄的导电层，优选地在球囊的内表面上。 无线电频率下的电力是优选的，并且使用同轴电缆将这种功率传递到用于加热球囊的导电层。 在另一个实施例中，气球本身由导电材料形成。 可以通过球囊提供灌注腔，其具有一个或多个近侧入口端口和一个或多个与内腔流体连通的远端排出口，以允许血液在血管成形术程序期间膨胀时通过气囊。 当球囊膨胀时，这有助于穿透导管的氧合血流，从而允许延长的气囊膨胀，例如长达30分钟或更长时间。 导管组件也可用于通过扩张血栓闭塞来治疗心肌梗塞。