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公开(公告)号：US10265519B2
公开(公告)日：2019-04-23
申请号：US13503084
申请日：2010-10-25
申请人： Steffen Weiss , Sascha Krueger
发明人： Steffen Weiss , Sascha Krueger
摘要： A catheter comprising: —a transmission line (104, 106, 924, 1202, 1302, 1902), wherein the transmission line comprises a plurality of radio frequency traps (118, 318, 418, 518, 618, 718, 818, 918, 1018, 1202, 1404); and —a cooling line (104, 304, 1200, 1900) for cooling the plurality of radio frequency traps with a fluid.
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公开(公告)号：US09952296B2
公开(公告)日：2018-04-24
申请号：US12808404
申请日：2008-12-22
申请人： Sascha Krueger , Daniel Wirtz , Steffen Weiss
发明人： Sascha Krueger , Daniel Wirtz , Steffen Weiss
CPC分类号： G01R33/285 , G01R33/288
摘要： 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.
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公开(公告)号：US09918653B2
公开(公告)日：2018-03-20
申请号：US13142432
申请日：2010-01-07
申请人： Oliver Lips , Bernd David , Sascha Krueger , Steffen Weiss
发明人： Oliver Lips , Bernd David , Sascha Krueger , Steffen Weiss
CPC分类号： A61B5/0422
摘要： 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 artifacts.
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公开(公告)号：US09297866B2
公开(公告)日：2016-03-29
申请号：US13141092
申请日：2009-11-23
申请人： Sascha Krueger
发明人： Sascha Krueger
CPC分类号： G01R33/34084 , A61B5/055 , G01R33/3628
摘要： A handpiece defines a bore in which a proximal end of a catheter or other interventional instrument is received. An insulating support supports an interventional instrument which carries a transmission line winding in, but spaced from, the internal bore. A handpiece winding disposed along the bore interacts with the instrument transmission line winding to form an inductive coupling with the instrument transmission line winding. After the handpiece is slid axially to adjust the inductive coupling between the handpiece and windings, a locking mechanism functions in such a manner that the interventional instrument is inhibited from axial sliding motion relative to the handpiece while permitting rotation of the interventional instrument relative to the handpiece thus maintaining the inductive coupling while allowing optimal handling of the device.
摘要翻译： 手柄定义了其中接收导管或其他介入器械的近端的孔。 绝缘支撑件支撑介入仪器，该介入仪器承载在内孔中但与内孔间隔开的传输线。 沿着孔设置的手持绕组与仪器传输线绕组相互作用，以形成与仪器传输线绕组的电感耦合。 在手持件滑动以调节手持件和绕组之间的感应耦合之后，锁定机构以这样的方式起作用，使得介入器械不受相对于手持件的轴向滑动运动，同时允许介入器械相对于手持件的旋转 从而保持电感耦合，同时允许设备的最佳处理。
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公开(公告)号：US08565857B2
公开(公告)日：2013-10-22
申请号：US12440252
申请日：2007-09-07
申请人： Oliver Lips , Bernd David , Bernhard Gleich , Sascha Krueger , Steffen Weiss , Daniel Wirtz
发明人： Oliver Lips , Bernd David , Bernhard Gleich , Sascha Krueger , Steffen Weiss , Daniel Wirtz
IPC分类号： A61B5/05
CPC分类号： A61B5/042 , A61B5/0428 , A61B5/055 , A61B2562/222 , A61N1/056 , A61N1/086 , A61N1/3625 , A61N1/3718 , G01R33/287
摘要： 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 kΩ, in particular of at least 5 kΩ. 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.
摘要翻译： 本发明涉及一种导管（6），包括：在导管的近侧的连接器（65,66），用于将导管连接到用于传输和/或接收信号的外部信号传输/接收单元（10）， 电极（63,64），以及包括用于电连接电极和连接器以用于在电极和连接器之间传输信号的电线（61,62）的电连接，其中电气 连接具有至少1kOmega的高电阻，特别是至少5kOmega。 因此，本发明提供了一种解决方案，通过使用高电阻丝和/或集总电阻作为导管内的连接，在MR引导下的EP干预期间防止过度加热。
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公开(公告)号：US08339256B2
公开(公告)日：2012-12-25
申请号：US12645549
申请日：2009-12-23
申请人： Steffen Weiss , Oliver Lips , Sascha Krueger
发明人： Steffen Weiss , Oliver Lips , Sascha Krueger
CPC分类号： G01R33/285 , A61B18/1492 , A61B2034/2051 , A61B2090/374 , A61N1/086 , G01R33/288 , G01R33/3664 , G01R33/3692
摘要： A magnetic resonance imaging (MRI) system includes an interventional instrument and a switched, segmented transmission (Tx) line which ensures safety during an MRI protocol while the interventional instrument is located in the system. The transmission line includes at least two electrically conductive Tx line segments separated by a non-conductive gap. An electrically conductive bridge, having an open and a closed state, and a parallel connected impedance bridge, having a known impedance which suppresses RF current between the line segments, bridge the non-conductive gap. A measurement unit measures the impedance across the Tx line while the conductive bridges are open. The line segments are verified to be decoupled if the measured impedance of the line is substantially equal to that of the impedance bridge.
摘要翻译： 磁共振成像（MRI）系统包括介入仪器和切换的分段传输（Tx）线，其在介入仪器位于系统中时确保MRI协议期间的安全性。 传输线包括由非导电间隙分开的至少两个导电Tx线段。 具有开路和闭合状态的导电桥和平行连接的阻抗桥，其具有抑制线段之间的RF电流的已知阻抗，桥接非导电间隙。 测量单元测量Tx导线上的阻抗，同时导电桥断开。 如果线路的测量阻抗基本上等于阻抗桥的阻抗，则线段被验证为去耦合。
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公开(公告)号：US08260433B2
公开(公告)日：2012-09-04
申请号：US12529366
申请日：2008-03-03
申请人： Bernd David , Daniel Wirtz , Oliver Lips , Steffen Weiss , Sascha Krueger
发明人： Bernd David , Daniel Wirtz , Oliver Lips , Steffen Weiss , Sascha Krueger
IPC分类号： A61N1/00
CPC分类号： A61N1/08 , A61B5/055 , A61B2562/222 , A61N1/086 , A61N1/3718
摘要： An apparatus for applying energy within an object includes an energy applying unit having an energy emitting element or outputting energy within the object and an energy storage unit locatable within the object and coupled to the energy emitting element. The apparatus further includes an electrical control line coupled to the energy applying unit for controlling the application of energy within the object by controlling transmission of energy from the energy storage unit to the energy emitting element.
摘要翻译： 用于在物体内施加能量的装置包括具有能量发射元件或在物体内输出能量的能量施加单元和位于物体内的能量存储单元，并耦合到能量发射元件。 该装置还包括耦合到能量施加单元的电气控制线，用于通过控制从能量存储单元到能量发射元件的能量传输来控制物体内的能量的施加。
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公开(公告)号：US20120101362A1
公开(公告)日：2012-04-26
申请号：US13142426
申请日：2010-01-11
申请人： Steffen Weiss , Oliver Lips , Sascha Krueger , Bernd David
发明人： Steffen Weiss , Oliver Lips , Sascha Krueger , Bernd David
IPC分类号： A61B5/055
CPC分类号： A61M25/0021 , A61B18/1492 , A61B2018/00023 , A61B2018/00029 , A61B2018/00744 , A61B2034/2051 , A61B2090/374 , A61B2090/3954 , A61M25/0082 , A61M25/10 , A61M2025/0166 , G01R33/287
摘要： The present invention relates to a catheter (2) for applying energy to an object (6) and a magnetic resonance imaging system (1) for localizing the catheter (2). The catheter (2) comprises an energy application element for applying energy to the object (6), and a cavity for providing a magnetic resonance fluid from which magnetic resonance signals generated by the magnetic resonance imaging system (1) are receivable, wherein the cavity is adapted for providing a cooling fluid as the magnetic resonance fluid for cooling the energy application element. The catheter (2) comprises further a tracking coil (15) for tracking the catheter (2), wherein the tracking coil (15) is adapted to receive the magnetic resonance signals from the magnetic resonance fluid. Thus, the magnetic resonance fluid fulfils at least two functions, providing magnetic resonance signals for tracking the catheter (2) and cooling the energy application element.
摘要翻译： 本发明涉及一种用于向物体（6）施加能量的导管（2）和用于定位导管（2）的磁共振成像系统（1）。 导管（2）包括用于向物体（6）施加能量的能量施加元件，以及用于提供磁共振流体的空腔，可由磁共振成像系统（1）产生的磁共振信号从该共振流体接收，其中腔 适于提供作为用于冷却能量施加元件的磁共振流体的冷却流体。 导管（2）还包括用于跟踪导管（2）的跟踪线圈（15），其中跟踪线圈（15）适于接收来自磁共振流体的磁共振信号。 因此，磁共振流体实现至少两个功能，提供用于跟踪导管（2）并冷却能量施加元件的磁共振信号。
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公开(公告)号：US20100016934A1
公开(公告)日：2010-01-21
申请号：US12529366
申请日：2008-03-03
申请人： Bernd David , Daniel Wirtz , Oliver Lips , Steffen Weiss , Sascha Krueger
发明人： Bernd David , Daniel Wirtz , Oliver Lips , Steffen Weiss , Sascha Krueger
IPC分类号： A61N1/00
CPC分类号： A61N1/08 , A61B5/055 , A61B2562/222 , A61N1/086 , A61N1/3718
摘要： The invention relates to an apparatus for applying energy within an object. The apparatus comprises an energy applying unit (8, 9), which includes an energy emitting element (9) for outputting energy within the object and an energy storage unit (8) locatable within the object and coupled to the energy emitting element. The apparatus comprises further an electrical control line (12) coupled to the energy applying unit for controlling the application of energy within the object by controlling a transmission of energy from the energy storage unit to the energy emitting element. The invention relates further to a corresponding method and a corresponding computer program.
摘要翻译： 本发明涉及一种在物体内施加能量的装置。 该装置包括能量施加单元（8,9），其包括用于在物体内输出能量的能量发射元件（9）和位于物体内的能量存储单元（8），并耦合到能量发射元件。 该装置还包括耦合到能量施加单元的电气控制线（12），用于通过控制从能量存储单元到能量发射元件的能量传输来控制物体内的能量的施加。 本发明进一步涉及相应的方法和相应的计算机程序。
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公开(公告)号：US11318280B2
公开(公告)日：2022-05-03
申请号：US13142426
申请日：2010-01-11
申请人： Steffen Weiss , Oliver Lips , Sascha Krueger , David Bernd
发明人： Steffen Weiss , Oliver Lips , Sascha Krueger , David Bernd
摘要： The present invention relates to a catheter (2) for applying energy to an object (6) and a magnetic resonance imaging system (1) for localizing the catheter (2). The catheter (2) comprises an energy application element for applying energy to the object (6), and a cavity for providing a magnetic resonance fluid from which magnetic resonance signals generated by the magnetic resonance imaging system (1) are receivable, wherein the cavity is adapted for providing a cooling fluid as the magnetic resonance fluid for cooling the energy application element. The catheter (2) comprises further a tracking coil (15) for tracking the catheter (2), wherein the tracking coil (15) is adapted to receive the magnetic resonance signals from the magnetic resonance fluid. Thus, the magnetic resonance fluid fulfils at least two functions, providing magnetic resonance signals for tracking the catheter (2) and cooling the energy application element.
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