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    • 1. 发明授权
    • Method and apparatus for catheter phototherapy with dose sensing
    • 用于剂量感应的导管光疗的方法和装置
    • US06749623B1
    • 2004-06-15
    • US09591947
    • 2000-06-12
    • Richard A HsiArye RosenCarmen E Rodriguez
    • Richard A HsiArye RosenCarmen E Rodriguez
    • A61K500
    • A61N5/062A61B2017/00057A61N5/0601
    • A photodynamic therapy method administers, to a patient to be treated, a photosensitive medication which fluoresces when illuminated. The fluorescent light is an indication of the instantaneous phototherapy dose. A catheter according to the invention includes a probe or sensor arrangement for generating a signal representing the instantaneous amplitude of the fluorescence or the incident illumination. The signal is integrated to produce a signal representing the total dose of phototherapy. The photodynamic therapy is terminated when the integrated signal indicates a particular value. The catheter in one embodiment includes an array of semiconductor light sources near its distal end, energized from the proximal end. In another embodiment, the light source is external to the patient, and the light is conducted to the distal end of the catheter by one or more optical fibers. The light sensor may be an optical fiber extending from the proximal to the distal end of the catheter, with a probe end which is directive or omnidirectional. In this case, the dose signal is detected by a photodiode exterior to the catheter and the detected signal is integrated to generate a signal indicative of cumulative dose. In another embodiment, the photodiode is located near the distal end of the catheter.
    • 光动力学治疗方法向待治疗的患者施用照射时发荧光的光敏药物。 荧光灯是瞬时光疗剂量的指示。 根据本发明的导管包括用于产生表示荧光或入射照明的瞬时幅度的信号的探针或传感器装置。 信号被整合以产生表示光疗总剂量的信号。 当积分信号表示特定值时,光动力疗法终止。 一个实施例中的导管包括从其近端附近的半导体光源的阵列,从近端激励。 在另一个实施例中,光源在患者外部,并且光通过一根或多根光纤传导到导管的远端。 光传感器可以是从导管的近端延伸到远端的光纤,探针端是指导性的或全向的。 在这种情况下,剂量信号由导管外部的光电二极管检测,并且检测到的信号被积分以产生指示累积剂量的信号。 在另一个实施例中,光电二极管位于导管的远端附近。