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    • 8. 发明申请
    • CATHETER WITH ULTRASOUND TRANSDUCER AND VARIABLE FOCUS LENS USED IN ANEURYSM ASSESSMENT
    • 超声波传感器和可变焦度镜头用于防护评估的导管
    • US20100076317A1
    • 2010-03-25
    • US12516617
    • 2007-11-16
    • Drazenko BabicJan Frederik SuijverBernardus Hendrikus Wilhelmus Hendriks
    • Drazenko BabicJan Frederik SuijverBernardus Hendrikus Wilhelmus Hendriks
    • A61B8/14
    • A61B8/12A61B5/02014A61B8/06A61B8/445A61B8/4483A61B8/483A61B17/12113A61B17/1214A61B2017/1205G10K11/30
    • A catheter having ultrasound capability and a distal end extending along a longitudinal axis, the end being situated adjacent to a tissue of interest inside of a patient; at least one ultrasound transducer located in the end to direct ultrasound waves along the axis in a generally forward direction relative to the end; a variable-focus lens system located in the end, downstream of the transducer in the generally forward direction, the lens system being capable of variably focusing the ultrasound waves emitted by the transducer at various positions downstream of the lens and catheter end; optionally, a mirror located in the end, downstream of the transducer and the lens system in the generally forward direction, whereby the emitted ultrasound waves from the lens system are either reflected from the mirror and focused at a position substantially perpendicular to the longitudinal axis; or the emitted ultrasound waves from the lens system substantially bypass the mirror in unreflected form and are focused at a position downstream of the transducer, the lens system and the mirror in the generally forward direction along the longitudinal axis; and imaging means for translating the focused ultrasound waves from the lens system reflected and/or unreflected by the mirror into three-dimensional images and communicating the images in viewable form to a human operator that is external to the patient. A method of measuring, imaging and viewing blood flow velocity and patterns in a blood vessel and aneurysm, as well as monitoring vaso-occlusive coil placement in an aneurysm during a surgical intervention using the catheter, is also disclosed.
    • 具有超声波能力的导管和沿着纵向轴线延伸的远端,所述端部位于与患者体内的感兴趣组织相邻的位置; 位于所述端部的至少一个超声波换能器沿着所述轴线在相对于所述端部的大致向前方向上引导超声波; 可变焦距透镜系统位于传感器的大致向前方的下游,透镜系统能够在透镜和导管端的下游的各个位置处可变地聚焦由换能器发射的超声波; 可选地,位于换能器下游的镜子和大致正向的透镜系统,由此来自透镜系统的发射的超声波或者从反射镜反射并且在基本上垂直于纵向轴线的位置聚焦; 或者来自透镜系统的发射的超声波基本上以未反射的形式旁路反射镜,并且沿着纵轴在大致向前的方向上聚焦在换能器,透镜系统和反射镜的下游位置处; 以及成像装置,用于将由镜子反射和/或未反射的透镜系统的聚焦超声波转换为三维图像,并将可视形式的图像传送给患者外部的人类操作者。 还公开了一种在使用导管的外科手术中测量,成像和观察血管和动脉瘤中的血流速度和图案的方法以及监测动脉瘤中的血管闭塞线圈放置。