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    • 7. 发明申请
    • ELECTROPHYSIOLOGY CATHETER
    • 电生理导管
    • US20110275951A1
    • 2011-11-10
    • US13142432
    • 2010-01-07
    • Oliver LipsBernd DavidSascha KruegerSteffen Weiss
    • Oliver LipsBernd DavidSascha KruegerSteffen Weiss
    • A61B5/053A61B5/04
    • A61B5/0422
    • The invention relates to electrophysiology catheter systems and their use, such as in an MRI environment, and in particular to analysis of electric signals from such. An electrophysiology (EP) catheter with a plurality of electrically isolated electrode segments arranged in longitudinally spaced bands around the catheter is used to detect electric signals. A workstation receives the electrical signals which are then processed by a processing unit. Electric signals from electrode segments can be used to determine roll angle information of the catheter in relation to patient anatomy by determining signals from electrode segments in contact with tissue. Also, electric signals can be used to extract a reference signal that can be used to correct for gradient induced artefacts.
    • 本发明涉及电生理学导管系统及其用途,例如在MRI环境中,特别涉及从其中分析电信号。 使用具有多个电隔离电极段的电生理学(EP)导管,其围绕导管以纵向间隔的带布置,以检测电信号。 工作站接收然后由处理单元处理的电信号。 来自电极段的电信号可用于通过确定与组织接触的电极段的信号来确定导管相对于患者解剖结构的侧倾角信息。 此外,电信号可以用于提取可用于校正梯度诱导伪像的参考信号。
    • 8. 发明申请
    • TRANSMISSION LINE FOR RF SIGNALS WITHOUT MATCHING NETWORKS
    • 无匹配网络的射频信号传输线
    • US20100094123A1
    • 2010-04-15
    • US12524001
    • 2008-01-24
    • Oliver LipsBernd DavidSascha KruegerSteffen Weiss
    • Oliver LipsBernd DavidSascha KruegerSteffen Weiss
    • A61B5/05
    • G01R33/287G01R33/288G01R33/3628
    • The present invention relates to an electrically conductive transmission line for transmitting RF signals, in particular for transmitting MR signals between a transmission and/or receiving coil (11) and a transmitting and/or receiving unit (12), by which separate known matching networks can be avoided or reduced. A transmission line is proposed comprising a plurality of lead segments (31) coupled only by transformers (32, 33) having a transformer impedance ZL placed between two neighbouring lead segments, wherein for power matching of the two transformers (32, 33) placed at opposite ends of a lead segment (31) said lead segment (31) has a low lead segment impedance Zo and/or a high dielectric constant εr and wherein said lead segment (31) has a short length 1. Thus, the lead segments themselves provide the matching of the transformers, and separate matching circuits are no longer needed.
    • 本发明涉及一种用于发送RF信号的导电传输线,特别是用于在发射和/或接收线圈(11)与发射和/或接收单元(12)之间发射MR信号,通过该传输线单独的已知匹配网络 可以避免或减少。 提出一种传输线,其包括多个引线段(31),其仅由放置在两个相邻引线段之间的变压器阻抗ZL的变压器(32,33)耦合,其中为了将两个变压器(32,33)的功率匹配放置在 引线段(31)的相对端,所述引线段(31)具有低引线段阻抗Zo和/或高介电常数ε,并且其中所述引线段(31)具有短的长度1.因此,引线 段本身提供变压器的匹配,不再需要单独的匹配电路。