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    • 1. 发明申请
    • OPTICAL PRESSURE SENSOR ASSEMBLY
    • 光压传感器总成
    • WO2014142958A1
    • 2014-09-18
    • PCT/US2013/032011
    • 2013-03-15
    • AVINGER, INC.
    • SMITH, Peter H.KANKARIA, Manish
    • A61B5/021G01B9/02
    • A61B5/0084A61B5/0066A61B5/02154A61B5/6852A61B5/7278A61B2560/0238A61B2560/0475A61B2562/0233A61B2562/0238A61B2562/0247A61B2576/00G01B9/02025G01B9/02057G01B9/02091G01L9/0077
    • Optical pressure sensor assemblies that can be used with existing catheters and imaging systems. Pressure sensors may be compatible with atherectomy and occlusion-crossing catheters, where intravascular pressure measurements at various vessel locations are needed to determine treatment efficacy. The pressure sensors may employ an optical pressure measurement mechanism using optical interferometry, and may be integrated with existing imaging modalities such as OCT. The pressure sensor assemblies may include a movable membrane that deflects in response to intravascular pressure; an optical fiber that transmits light to the movable membrane and receives light reflected or scattered back from the movable membrane into the fiber; and a processor or controller configured to determine the distance traveled by the light received in the fiber from the movable membrane, where the distance traveled is proportional to the intravascular pressure exerted against the membrane.
    • 可用于现有导管和成像系统的光学压力传感器组件。 压力传感器可能与粥样斑块切除术和阻塞交叉导管相容,其中需要各种血管位置处的血管内压力测量来确定治疗功效。 压力传感器可以使用光学干涉测量的光学压力测量机构,并且可以与诸如OCT的现有成像模式集成。 压力传感器组件可以包括响应于血管内压力而偏转的可移动膜; 将光透射到可移动膜并接收从可移动膜反射或散射回到光纤中的光; 以及处理器或控制器,其被配置为确定由可移动膜在纤维中接收的光行进的距离,其中所行进的距离与施加在膜上的血管内压力成正比。