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    • 104. 发明申请
    • Three-dimensional optical guidance for catheter placement
    • 导管放置三维光导
    • US20080039715A1
    • 2008-02-14
    • US11811554
    • 2007-06-11
    • David WilsonSergei VinogradovSofia Apreleva
    • David WilsonSergei VinogradovSofia Apreleva
    • A61B5/05
    • A61B5/06A61B5/061
    • A system is provided comprising an optically-guided catheter having a proximal end, a distal end, and at least one lumen. A light-emitting means is coupled to the catheter, the catheter is inserted into place in the patient, and light is emitted as a point or points from a selected location, usually the distal tip, of the catheter to which it is coupled. The system further comprises an external detection device that detects the transdermally projected light, emitted by the light-emitting point from within the patient, thereby indicating precise placement of the catheter within the patient. A system and method for three-dimensional visualization using an internally positioned light emitter and an externally positioned detection array are also provided.
    • 提供了一种包括具有近端,远端和至少一个内腔的光学引导导管的系统。 发光装置耦合到导管,将导管插入患者的适当位置,并且将光从作为其所联接的导管的选定位置(通常为远端)的点或点发射。 该系统还包括外部检测装置,其检测由患者内的发光点发射的透皮投射的光,从而指示导管在患者体内的精确放置。 还提供了一种使用内部定位的光发射器和外部定位的检测阵列进行三维可视化的系统和方法。
    • 107. 发明申请
    • Frozen material detection using electric field sensor
    • 使用电场传感器进行冷冻材料检测
    • US20070209446A1
    • 2007-09-13
    • US11373071
    • 2006-03-10
    • Bradley StewartSergio de Alba GarcinRogelio GarciaGabriel BarbaDavid Wilson
    • Bradley StewartSergio de Alba GarcinRogelio GarciaGabriel BarbaDavid Wilson
    • G01B7/16
    • G01N27/22
    • An electric field sensor may be used to detect accumulation of frozen material. In one embodiment, an e-field system includes a first electrode, a second electrode located at a distance from the first electrode, the second electrode forming a capacitive element with the first electrode, wherein a gap is present between the first and second electrodes, and an electric field sensor having an electrode terminal coupled to the first electrode and providing an electric field output value representative of an amount of frozen material located in the gap between the first and second electrodes. The system may also include a first insulator adjacent the first electrode and outside the gap, and a conductive layer adjacent the first insulator, where the first insulator is between the first electrode and the conductive layer, and where a shield output of the electric field sensor is coupled to the conductive layer.
    • 可以使用电场传感器来检测冷冻材料的积聚。 在一个实施例中,电场系统包括第一电极,位于距离第一电极一定距离的第二电极,第二电极与第一电极形成电容元件,其中在第一和第二电极之间存在间隙, 以及电场传感器,其具有耦合到所述第一电极的电极端子,并且提供表示位于所述第一和第二电极之间的间隙中的冷冻材料的量的电场输出值。 该系统还可以包括邻近第一电极并在间隙外部的第一绝缘体和邻近第一绝缘体的导电层,其中第一绝缘体位于第一电极和导电层之间,并且其中电场传感器的屏蔽输出 耦合到导电层。