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公开(公告)号：US5555893A
公开(公告)日：1996-09-17
申请号：US048492
申请日：1993-04-16
申请人： Steven S. Hackett , Roger N. Hastings , Arnold W. Thornton , Darlene A. Thometz , Kenneth R. Larson , Scott P. Thome , John W. Humphrey
发明人： Steven S. Hackett , Roger N. Hastings , Arnold W. Thornton , Darlene A. Thometz , Kenneth R. Larson , Scott P. Thome , John W. Humphrey
CPC分类号： A61M25/0169 , A61M25/0127 , A61M25/09041 , A61M2025/09116
摘要： The present invention is a device and method for controlling longitudinal movement of a tube relative to a shaft slidably disposed within the tube, especially in the catheterization of a patient. An operative segment on the shaft cooperates with an ancillary tool to create a coupling force field between the shaft and the tool. The tube can then be moved over the shaft while the coupling force field operates through the tube to restrict the movement of the shaft. In preferred embodiment, the shaft is a guide wire and the tube is a catheter with a lumen for slidably receiving the guide wire, while the coupling force field is created magnetically. In one embodiment, the operative segment is borne on a short guide wire extension which is selectively securable to a standard guide wire.
摘要翻译： 本发明是一种用于控制管相对于可滑动地设置在管内的轴的纵向运动的装置和方法，特别是在患者的导管插入中。 轴上的操作段与辅助工具协作以在轴和工具之间产生联接力场。 然后，管可以在轴上移动，同时耦合力场通过管操作以限制轴的运动。 在优选实施例中，所述轴是导丝，并且所述管是具有用于可滑动地接收所述导丝的内腔的导管，而所述耦合力场是磁力产生的。 在一个实施例中，操作段承载在可选择性地固定到标准导丝的短导丝延伸部上。
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公开(公告)号：US5623943A
公开(公告)日：1997-04-29
申请号：US929083
申请日：1992-08-12
申请人： Steven S. Hackett , Roger N. Hastings , Arnold W. Thornton , Darlene A. Thometz , Kenneth R. Larson
发明人： Steven S. Hackett , Roger N. Hastings , Arnold W. Thornton , Darlene A. Thometz , Kenneth R. Larson
CPC分类号： A61M25/0169 , A61M25/0127 , A61M25/09041 , A61M2025/09116
摘要： The present invention is a device and method for controlling longitudinal movement of a tube relative to a shaft slidably disposed within the tube, especially in the catheterization of a patient. An operative segment on the shaft cooperates with an ancillary tool to create a coupling force field between the shaft and the tool. The tube can then be moved over the shaft while the coupling force field operates through the tube to restrict the movement of the shaft. In a preferred embodiment, the shaft is a guide wire and the tube is a catheter with a lumen for slidably receiving the guide wire, while the coupling force field is created magnetically. In one embodiment, the operative segment is borne on a short guide wire extension which is selectively securable to a standard guide wire.
摘要翻译： 本发明是一种用于控制管相对于可滑动地设置在管内的轴的纵向运动的装置和方法，特别是在患者的导管插入中。 轴上的操作段与辅助工具协作以在轴和工具之间产生联接力场。 然后，管可以在轴上移动，同时耦合力场通过管操作以限制轴的运动。 在优选实施例中，所述轴是导丝，并且所述管是具有用于可滑动地接收所述导丝的内腔的导管，而所述耦合力场是由磁力产生的。 在一个实施例中，操作段承载在可选择性地固定到标准导丝的短导丝延伸部上。
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公开(公告)号：US5873835A
公开(公告)日：1999-02-23
申请号：US527815
申请日：1995-09-13
申请人： Roger N. Hastings , Paul T. Feld , Daniel M. Lafontaine , Kenneth R. Larson , Richard R. Prather
发明人： Roger N. Hastings , Paul T. Feld , Daniel M. Lafontaine , Kenneth R. Larson , Richard R. Prather
CPC分类号： A61B5/6851 , A61B5/0215 , A61B5/028 , A61M25/104 , G01F1/68 , G01F1/69 , G01F1/698 , G01P5/12 , H01F1/447 , H01F21/06 , A61M2025/0002 , A61M2205/3331 , A61M2205/36
摘要： An intravascular device for measuring blood pressure and flow is disclosed, which includes an elongate shaft having a pressure transducer and a flow transducer connected to its distal end. The pressure transducer may be a ferrofluid-type pressure transducer and the flow transducer may be an anemometer-type flow transducer. Measurement circuitry is also disclosed which provides a means for simultaneous measurement of both blood pressure and blood flow parameters. A sensor shield may be employed to isolate radial blood flow which is indicative of turbulent blood flow. An alternative blood flow measurement device is also disclosed which utilizes a thin metal film anemometer to measure flow in a vascular lumen.
摘要翻译： 公开了一种用于测量血压和血流的血管内装置，其包括具有压力换能器和连接到其远端的流量传感器的细长轴。 压力传感器可以是铁磁流体型压力传感器，并且流量传感器可以是风速计型流量变换器。 还公开了测量电路，其提供用于同时测量血压和血流参数的手段。 可以使用传感器屏蔽来分离指示湍流血流的径向血流。 还公开了一种替代的血流测量装置，其利用薄金属薄膜风速计来测量血管腔中的流动。
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公开(公告)号：US07194297B2
公开(公告)日：2007-03-20
申请号：US10008380
申请日：2001-11-13
IPC分类号： A61B6/00
CPC分类号： A61B5/06 , A61B5/055 , A61B2017/00292
摘要： Intravascular device for matching impedances of portions of an intravascular circuit and limiting RF signal-induced heating of intravascular conductors. An intravascular device includes alternating conductive and dielectric layers and an electrically conductive coil in a configuration that effects an impedance-matching circuit. Another embodiment of an intravascular device has cylindrical inner and outer walls formed of an expandable, electrically conductive material, the inner and outer walls being separated by a compressible dielectric material. Varying the pressure in the lumen defined by the inner wall changes the spacing between the inner and outer walls, thereby changing the capacitance between the inner and outer wall. Another embodiment of an intravascular device includes one or more coaxial chokes for limiting heating caused by currents induced by RF signals. A conductive shield of the choke is formed of a conductive polymer to further reduce heating effects. Other embodiments include different transmission lines and antenna structures.
摘要翻译： 用于匹配血管内电路部分阻抗的血管内装置，并限制血管内导线的RF信号诱导加热。 血管内装置包括交替的导电和介电层以及导致阻抗匹配电路的配置中的导电线圈。 血管内装置的另一实施例具有由可扩张的导电材料形成的圆柱形内壁和外壁，内壁和外壁由可压缩介电材料分开。 改变由内壁限定的内腔中的压力改变内壁和外壁之间的间隔，从而改变内壁和外壁之间的电容。 血管内装置的另一实施例包括用于限制由RF信号引起的电流引起的加热的一个或多个同轴电抗器。 扼流圈的导电屏蔽由导电聚合物形成，以进一步降低加热效果。 其他实施例包括不同的传输线和天线结构。
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