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35 条记录 (耗时 0.067 秒)

    Methods and apparatus for imparting curves in elongated medical catheters
    31.
    发明授权
    Methods and apparatus for imparting curves in elongated medical catheters 失效
    在细长的医用导管中赋予曲线的方法和装置

    公开(公告)号：US06939338B2

    公开(公告)日：2005-09-06

    申请号：US10125365

    申请日：2002-04-19

    申请人： Steven L. Waldhauser ,  Timothy G. Laske ,  James F. Kelley ,  Kenneth C. Gardeski ,  Gregory P. Shipe

    发明人： Steven L. Waldhauser ,  Timothy G. Laske ,  James F. Kelley ,  Kenneth C. Gardeski ,  Gregory P. Shipe

    IPC分类号： A61B1/005 ,  A61M25/00 ,  A61M25/01 ,  A61M25/092

    CPC分类号： A61M25/0158 ,  A61B1/0058 ,  A61M25/0041 ,  A61M25/0054 ,  A61M2025/0064

    摘要： Curves and dynamic shapes are imparted in distal segments of medical instruments e.g., catheters, through use of a temperature-activated actuator coupled to distal segment of the instrument body. The actuator comprises includes members extending side-by-side in substantially a common plane and configured to move in opposite directions when independently activated. A first heating device is coupled to a first actuator member and configured to deliver thermal energy to the first actuator member to activate the first actuator member and cause the first actuator member to move the distal segment in a first direction. A second heating device is coupled to a second actuator member and configured to deliver thermal energy to the second actuator member to activate the second actuator member and cause the second actuator member to move the distal segment in a second direction opposed to the first direction.

    摘要翻译： 曲线和动态形状通过使用耦合到仪器主体的远端部分的温度激活的致动器，在医疗器械的远端部分（例如导管）中被施加。 致动器包括在基本上共同的平面中并排延伸的构件，并且构造成当独立地启动时沿相反的方向移动。 第一加热装置联接到第一致动器构件并且构造成将热能传递到第一致动器构件以启动第一致动器构件并使第一致动器构件沿第一方向移动远侧段。 第二加热装置联接到第二致动器构件并且被配置为将热能传递到第二致动器构件以致动第二致动器构件并使第二致动器构件沿与第一方向相反的第二方向移动远侧段。

    Shape memory alloy actuators
    32.
    发明授权
    Shape memory alloy actuators 有权
    形状记忆合金执行器

    公开(公告)号：US06832478B2

    公开(公告)日：2004-12-21

    申请号：US10410545

    申请日：2003-04-09

    申请人： David A. Anderson ,  James F. Kelley ,  Naim S. Istephanous ,  Steven L. Waldhauser

    发明人： David A. Anderson ,  James F. Kelley ,  Naim S. Istephanous ,  Steven L. Waldhauser

    IPC分类号： F03G706

    CPC分类号： F03G7/065 ,  A61B1/0058

    摘要： An electrically insulative layer of a shape memory alloy (SMA) actuator includes an inorganic material formed upon a portion of an SMA substrate. A conductive material formed upon a portion of the electrically insulative layer in a trace pattern includes a first end, a second end, and a heating element disposed between the first and second ends. The SMA substrate is trained to deform at a transition temperature achieved when electricity is conducted through the conductive material via first and second interconnect pads terminating the first and second ends of the trace pattern.

    摘要翻译： 形状记忆合金（SMA）致动器的电绝缘层包括形成在SMA基底的一部分上的无机材料。 形成在电绝缘层的痕迹图案的一部分上的导电材料包括第一端，第二端和设置在第一端和第二端之间的加热元件。 训练SMA基底，以在通过导电材料通过终止迹线图案的第一和第二端的第一和第二互连焊盘传导电导时实现的转变温度下变形。

    Intraluminal visualization system with deflectable mechanism
    33.
    发明授权
    Intraluminal visualization system with deflectable mechanism 有权
    具有偏转机制的管腔内可视化系统

    公开(公告)号：US06743227B2

    公开(公告)日：2004-06-01

    申请号：US09822678

    申请日：2001-03-30

    申请人： Mahmoud K. Seraj ,  Eric Chan ,  James F. Kelley

    发明人： Mahmoud K. Seraj ,  Eric Chan ,  James F. Kelley

    IPC分类号： A61B1818

    CPC分类号： A61M25/0668 ,  A61B18/1492 ,  A61B2017/22038 ,  A61M25/0051 ,  A61M25/0054 ,  A61M25/0138 ,  A61M25/0147 ,  A61M2025/0042 ,  A61M2025/0047 ,  A61M2025/0081 ,  A61M2025/0161 ,  A61M2025/0681 ,  A61M2025/1052 ,  A61M2025/1079 ,  A61N1/056 ,  A61N2001/0578 ,  A61N2001/0585

    摘要： This is a combination method and system for intravascularly accessing and visualizing a body structure. A system is disclosed comprising a sheath, a balloon catheter, and a catheter deflection mechanism. A micro-deflection mechanism, which may be placed into the lumen of devices such as cardiac leads or electrophysiology catheters, is also provided for accurate guidance and placement of such devices to their target location. In one embodiment, a procedure for a lead or catheter placement is described in which a combination deflection mechanism, balloon catheter, and sheath assembly access the coronary sinus ostium via a superior approach. A distal balloon on the catheter is inflated and an occlusive venogram is obtained under fluoroscopic guidance to visualize the coronary veins. The sheath is advanced into the coronary sinus ostium and the balloon is deflated. The catheter and deflection mechanism are then removed. Next, a micro-deflection mechanism that has been inserted into the lumen of a cardiac lead is deployed through the sheath, allowing the lead to deflect with a high degree of accuracy and control as it is placed in the selected location.

    摘要翻译： 这是用于血管内访问和可视化身体结构的组合方法和系统。 公开了一种包括护套，球囊导管和导管偏转机构的系统。 还可以提供可以放置在诸如心脏引线或电生理学导管的装置的内腔中的微偏转机构，用于将这些装置精确地引导和放置到其目标位置。 在一个实施例中，描述了用于引导或导管放置的过程，其中组合偏转机构，球囊导管和护套组件通过优异的方法进入冠状窦口。 导管上的远端气球被充气，并且在荧光镜引导下获得闭塞静脉图以使冠状静脉可视化。 鞘进入冠状窦口，气囊放气。 然后取出导管和偏转机构。 接下来，已经插入到心脏引线的内腔中的微偏转机构通过护套展开，从而允许引线在被放置在所选择的位置时以高度的精度和控制偏转。

    System for disabling oximeter in presence of ambient light
    35.
    发明授权
    System for disabling oximeter in presence of ambient light 失效
    存在环境光时禁用血氧计的系统

    公开(公告)号：US5341804A

    公开(公告)日：1994-08-30

    申请号：US977978

    申请日：1992-11-18

    申请人： Eric J. Fogt ,  James F. Kelley ,  Ralph M. Kerns ,  Timothy J. Duffy ,  David J. Draska

    发明人： Eric J. Fogt ,  James F. Kelley ,  Ralph M. Kerns ,  Timothy J. Duffy ,  David J. Draska

    IPC分类号： A61B5/00 ,  G01N21/27

    CPC分类号： A61B5/14535 ,  A61B5/14557 ,  A61B5/1495 ,  G01N21/274 ,  A61B2560/0233 ,  G01N2201/1244 ,  G01N2201/1281

    摘要： A system for disabling an oximetric device when radiation-carrying channels are exposed to excess ambient radiation is disclosed. It includes a transmitter channel adjacent the sample to be measured, means for isolating the channel from the sample so that it does not carry radiation reflected from or transmitted through the sample, a detector for receiving the transmitted signal, if any, and means for disabling the output in response to the transmitted signal. Preferably, the transmitter channel runs parallel to other transmitter channels in the device, and is isolated from undue ambient light. The system preferably includes means for determining when the second transmitted signal exceeds background noise and the output is disabled when the second transmitted signal exceeds background noise. In general, the sample is a fluid, usually blood, passing through a cuvette adjacent the fiber-optic channels, the cuvette defining an area of radiation absorption adjacent the transmitter channel so that the transmitter does not carry reflected or transmitted radiation from the sample. Also disclosed is a fiber-optic sensor for measuring components of a composition by detecting transmitted or reflected, usually reflected, radiation including such a system, and the cuvette therefore. Finally, a method of disabling the output of an oximetric device when the fiber-optic channels are exposed to undue ambient radiation is disclosed.

    摘要翻译： 公开了一种当辐射承载通道暴露于过量环境辐射时使得血压测定装置失效的系统。 它包括与要测量的样本相邻的发射机信道，用于将信道与样本隔离的装置，使得其不携带从样本反射或透射的辐射，用于接收发射信号的检测器（如果有的话）以及用于禁用的装置 响应于所发送的信号的输出。 优选地，发射机信道平行于设备中的其他发射机信道，并且与不适当的环境光隔离。 系统优选地包括用于确定第二发射信号何时超过背景噪声的装置，并且当第二发射信号超过背景噪声时输出被禁用。 通常，样品是流体，通常为血液，通过与光纤通道相邻的比色杯，比色皿限定了邻近发射器通道的辐射吸收区域，使得发射器不携带来自样品的反射或透射的辐射。 还公开了一种用于通过检测包括这种系统的透射或反射的，通常被反射的辐射来测量组合物的组分的光纤传感器，以及因此的比色皿。 最后，公开了当光纤通道暴露于不适当的环境辐射时禁用血压计的输出的方法。