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    2.
    发明专利
    未知

    公开(公告)号：DE602007005007D1

    公开(公告)日：2010-04-08

    申请号：DE602007005007

    申请日：2007-09-07

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

    Inventor： LIPS OLIVER ,  DAVID BERND ,  GLEICH BERNHARD ,  KRUEGER SASCHA ,  WEISS STEFFEN ,  WIRTZ DANIEL

    IPC: A61B5/055 ,  A61B5/308

    Abstract: The present invention relates to a catheter (6) comprising: a connector (65, 66) at a proximal side of the catheter for connecting the catheter to an external signal transmission/receiving unit (10) for transmitting and/or receiving signals, an electrode (63, 64) at a distal side of the catheter, and an electrical connection including an electrical wire (61, 62) for electrically connecting the electrode and the connector for the transmission of signals between the electrode and the connector, wherein the electrical connection has a high electrical resistance of at least 1 kOmega, in particular of at least 5 kOmega. Thus, the present invention provides a solution to prevent excessive heating during EP interventions under MR guidance by using highly resistive wires and or lumped resistors as connections within catheters.

    ELECTROPHYSIOLOGY CATHETER
    7.
    发明申请
    ELECTROPHYSIOLOGY CATHETER 审中-公开
    电生理导管

    公开(公告)号：WO2010082145A3

    公开(公告)日：2010-09-30

    申请号：PCT/IB2010050052

    申请日：2010-01-07

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  LIPS OLIVER ,  DAVID BERND ,  KRUEGER SASCHA ,  WEISS STEFFEN

    Inventor： LIPS OLIVER ,  DAVID BERND ,  KRUEGER SASCHA ,  WEISS STEFFEN

    IPC: A61B5/042

    CPC classification number: A61B5/0422

    Abstract: 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.

    Abstract translation: 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。

    TRANSMISSION CABLE FOR USE IN RADIO-FREQUENCY MAGNETIC OR ELECTRICAL FIELDS
    8.
    发明申请
    TRANSMISSION CABLE FOR USE IN RADIO-FREQUENCY MAGNETIC OR ELECTRICAL FIELDS 审中-公开
    用于无线电频率电磁场的变速电缆

    公开(公告)号：WO2009004548A2

    公开(公告)日：2009-01-08

    申请号：PCT/IB2008052589

    申请日：2008-06-27

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  KRUEGER SASCHA ,  DAVID BERND ,  LIPS OLIVER ,  WEISS STEFFEN ,  WIRTZ DANIEL

    Inventor： KRUEGER SASCHA ,  DAVID BERND ,  LIPS OLIVER ,  WEISS STEFFEN ,  WIRTZ DANIEL

    IPC: A61M25/09

    CPC classification number: G01R33/36 ,  A61B18/14 ,  A61B2018/00178 ,  A61B2090/374 ,  A61N1/086 ,  G01R33/287 ,  G01R33/288 ,  G01R33/3664

    Abstract: A transmission cable for use in an elongate medical device (420) such as a catheter, guide wire, etc., wherein the transmission cable is capable of being switched to an MR-safe mode only when necessary, while retaining its optimal electrical transmission properties otherwise, is disclosed herein. The transmission cable comprises a transmission line including at least two electrically conductive line segments (104a, 104b) separated by a non-conductive gap (106a), a bridging unit comprising at least one electrically conductive bridge segment (108a) capable of bridging the non-conductive gap, and a switching unit (112) arranged to move the bridging unit and/or the transmission line to electrically connect the two line segments by closing the non-conductive gap using the bridge segment or to electrically disconnect the two line segments by opening the non-conductive gap.

    Abstract translation: 一种用于诸如导管，导丝等细长医疗设备（420）的传输电缆，其中传输电缆仅在必要时能够切换到MR安全模式，同时保持其最佳的电传输特性 否则，在此公开。 传输电缆包括传输线，传输线包括由非导电间隙（106a）隔开的至少两个导电线段（104a，104b）;桥接单元，包括至少一个导电桥段（108a） 以及开关单元（112），其布置成使桥接单元和/或传输线移动以通过使用桥接段闭合非导电间隙来电连接两个线段，或者通过 打开非导电间隙。

    MAGNETIC RESONANCE DEVICE AND METHOD
    9.
    发明申请
    MAGNETIC RESONANCE DEVICE AND METHOD 审中-公开
    磁共振装置及方法

    公开(公告)号：WO2007122553A2

    公开(公告)日：2007-11-01

    申请号：PCT/IB2007051376

    申请日：2007-04-17

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  KRUEGER SASCHA ,  WEISS STEFFEN ,  DAHNKE HANNES ,  SCHAEFFTER TOBIAS R

    Inventor： KRUEGER SASCHA ,  WEISS STEFFEN ,  DAHNKE HANNES ,  SCHAEFFTER TOBIAS R

    IPC: G01R33/28

    CPC classification number: G01R33/286

    Abstract: The invention relates to a device for magnetic resonance imaging of a body (7), wherein the device (1) is arranged to a) generate a series of MR echo signals (20) by subjecting at least a portion of the body (7) to an MR imaging sequence comprising RF pulses and switched magnetic field gradients, b) acquire the MR echo signals for reconstructing an MR image (21) therefrom, c) calculate a susceptibility gradient map (22) from the MR echo signals or from the MR image (21), the susceptibility gradient map (22) indicating local susceptibility induced magnetic field gradients, d) determine the position of an interventional instrument (16) having paramagnetic or ferromagnetic properties from the susceptibility gradient map (22).

    Abstract translation: 本发明涉及一种用于身体（7）的磁共振成像的装置，其中所述装置（1）被布置成：a）通过对所述主体（7）的至少一部分进行承受来产生一系列MR回波信号（20） 涉及包括RF脉冲和切换磁场梯度的MR成像序列，b）获取用于重构MR图像（21）的MR回波信号，c）从MR回波信号或从MR回波信号计算磁敏度梯度图（22） 图像（21），表示局部敏感性感应磁场梯度的磁敏度梯度图（22），d）从磁敏度梯度图（22）确定具有顺磁性或铁磁性质的介入仪器（16）的位置。

    MAGNETIC RESONANCE SAFETY MONITORING SYSTEMS AND METHODS
    10.
    发明申请
    MAGNETIC RESONANCE SAFETY MONITORING SYSTEMS AND METHODS 审中-公开
    磁共振安全监测系统和方法

    公开(公告)号：WO2009081379A3

    公开(公告)日：2009-08-27

    申请号：PCT/IB2008055482

    申请日：2008-12-22

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  KRUEGER SASCHA ,  WIRTZ DANIEL ,  WEISS STEFFEN

    Inventor： KRUEGER SASCHA ,  WIRTZ DANIEL ,  WEISS STEFFEN

    IPC: G01R33/28

    CPC classification number: G01R33/285 ,  G01R33/288

    Abstract: A magnetic resonance method comprises applying a radio frequency excitation in an examination region (14), measuring a magnetic resonance signal generated by the applied radio frequency excitation in a subject (16) in the examination region, monitoring a radio frequency parameter during the applying, and evaluating subject safety based on the monitoring. A magnetic resonance safety monitor (40) comprises an analyzer (42, 44, 46, 50) configured to (i) receive a radio frequency signal during magnetic resonance excitation, (ii) extract a radio frequency parameter from the received radio frequency signal, and (iii) evaluate subject safety based on the extracted radio frequency parameter, and a remediation module (54) configured to perform a remediation of the magnetic resonance excitation responsive to the evaluation (iii) indicating a potentially unsafe condition.

    Abstract translation: 一种磁共振方法包括：在检查区域（14）中施加射频激励;测量由检查区域中的受检者（16）中的施加的射频激励产生的磁共振信号;在施加期间监测射频参数; 并根据监测评估主体安全。 一种磁共振安全监测器（40），包括：分析器（42,44,46,50），其被配置为（i）在磁共振激励期间接收射频信号，（ii）从所接收的射频信号中提取射频参数， （iii）基于所提取的射频参数评估受试者安全性;以及修复模块（54），其被配置为响应于评估（iii）指示潜在的不安全状况而执行磁共振激励的修复。

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