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    • 3. 发明申请
    • A RADIO FREQUENCY ENERGY TRANSMISSION DEVICE FOR THE ABLATION OF BIOLOGICAL TISSUES
    • 一种用于清除生物组织的射频能量传输装置
    • WO2009039093A3
    • 2009-05-14
    • PCT/US2008076523
    • 2008-09-16
    • MEDWAVES INCORMSBY THEODORE CLEUNG GEORGE LLAW MING FAN
    • ORMSBY THEODORE CLEUNG GEORGE LLAW MING FAN
    • A61B18/18
    • A61B18/14A61B18/18A61B18/1815A61B2017/00243A61B2018/00577H01Q11/08
    • A radio frequency energy transmission device comprises a hollow coaxial electrically conductive cable which conducts radio frequency (RF) energy, particularly microwave energy, for the ablation of biological tissue. Coaxial inner and outer conductors extend substantially the entire length of the cable from the proximal end to a distal end portion of the cable. The inner conductor comprises a tubular member having a hollow, axially extending lumen, and the outer conductor comprises a tubular member disposed in a substantially coaxial relationship over at least a portion of the inner conductor. Dielectricity to impede conduction between the inner and outer conductors is introduced with a vacuum or dielectric medium disposed between the inner and outer conductors. An ablating member, which delivers radio frequency energy to body tissue is disposed at a distal end portion of the cable. The ablating member can be a helical coil, a monopole or a microstrip circuit.
    • 射频能量传输装置包括传导射频(RF)能量,特别是微波能量的中空同轴导电电缆,用于消融生物组织。 同轴内导体和外导体基本上从电缆的近端延伸到电缆的远端部分的整个长度。 内导体包括具有中空的轴向延伸内腔的管状构件,并且外导体包括管状构件,该管状构件在内导体的至少一部分上以基本上同轴的关系设置。 用于阻止内导体和外导体之间的导电的电介质被引入设置在内导体和外导体之间的真空或电介质。 将射频能量递送至身体组织的消融构件布置在电缆的远端部分处。 消融元件可以是螺旋线圈,单极或微带电路。
    • 5. 发明申请
    • RADIO FREQUENCY ABLATION SYSTEM WITH TRACKING SENSOR
    • 带跟踪传感器的射频消融系统
    • WO2011066445A3
    • 2011-10-06
    • PCT/US2010058082
    • 2010-11-24
    • MEDWAVES INCORMSBY THEODORE CJENN SHEN GWOLEUNG GEORGE L
    • ORMSBY THEODORE CJENN SHEN GWOLEUNG GEORGE L
    • A61B18/18A61B18/12A61B18/14
    • A61B18/1815A61B2018/00196A61B2018/1853A61B2018/1861A61B2034/2051
    • An RF ablation system has a hollow conductive coaxial cable comprising inner and outer coaxial tubular conductors, and an ablating member mounted at the distal end portion of the cable for delivery of radio frequency energy including microwaves to the target body tissue. The inner conductor has a central lumen and extends at least up to the ablating member. At least one electromagnetic tracking sensor coil with a magnetic core is located in the central lumen at the distal end portion of the cable, close to the distal tip of the cable, and connected to a signal processing unit. An electromagnetic field generator positioned in the vicinity of a patient undergoing treatment generates an electromagnetic field which induces a voltage in the sensor coil. The signal processing unit uses the induced voltage to calculate the position and orientation of the distal end portion or tip of the catheter in a patient's body.
    • RF消融系统具有中空导电同轴电缆,其包括内部和外部同轴管状导体以及安装在电缆的远端部分处的消融构件,用于将包括微波的射频能量递送至目标身体组织。 内导体具有中心内腔并且至少延伸到消融构件。 具有磁芯的至少一个电磁跟踪传感器线圈位于电缆的远端部分处的中央管腔中,靠近电缆的远端,并连接到信号处理单元。 位于正在进行治疗的患者附近的电磁场发生器产生电磁场,其在传感器线圈中感应出电压。 信号处理单元使用感应电压来计算导管的远端部分或尖端在患者体内的位置和取向。