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    • 1. 发明申请
    • LEAD INCLUDING CONDUCTORS CONFIGURED FOR REDUCED MRI-INDUCED CURRENTS
    • 引导包括用于减少MRI诱导电流配置的导体
    • WO2011103444A1
    • 2011-08-25
    • PCT/US2011/025457
    • 2011-02-18
    • CARDIAC PACEMAKERS, INC.LI, YingboAMERI, MasoudREDDY, G. ShantanuFOSTER, Arthur J.BENTSEN, James G.
    • LI, YingboAMERI, MasoudREDDY, G. ShantanuFOSTER, Arthur J.BENTSEN, James G.
    • A61N1/08
    • A61N1/05A61N1/0563A61N1/086
    • Systems and methods for improving response of implantable leads to magnetic fields during medical procedures such as magnetic resonance imaging (MRI) are described. In various embodiments, the lead includes an inner conductor that is helically shaped and radially surrounded, at least in part, by one or more high-voltage conductors. The high-voltage conductor can be mechanically and/or electrically coupled, via a coupler, to the shocking coil. The pitch of the inner and/or outer conductor can be varied (e.g., continuously or at certain points) along the length of the lead. In some embodiments, the filar thickness, the pitch, and the mean coil diameter of the inner coil, the high voltage conductor coil, and the shock coil can be configured such that these coils have a desired inductance value when subjected to externally applied electromagnetic energy at radio frequencies commonly generated by MRI scanners (e.g., 40 MHz to 300MHz).
    • 描述了在诸如磁共振成像(MRI)的医疗过程期间改善可植入引线对磁场的响应的系统和方法。 在各种实施例中,引线包括内部导体,该内部导体至少部分由螺旋形状并且被一个或多个高压导体径向包围。 高压导体可以通过耦合器机械地和/或电耦合到震动线圈。 内导体和/或外导体的间距可以沿引线的长度变化(例如,连续地或在某些点处)。 在一些实施例中,内部线圈,高压导体线圈和冲击线圈的丝状体厚度,间距和平均线圈直径可以被配置为使得当经受外部施加的电磁能量时,这些线圈具有期望的电感值 在MRI扫描仪通常产生的射频(例如,40 MHz至300MHz)。
    • 2. 发明申请
    • MRI SAFE, MULTIPOLAR ACTIVE FIXATION STIMULATION LEAD WITH CO-RADIAL CONSTRUCTION
    • MRI安全,多用途有源固定刺激引线与径向结构
    • WO2011081700A1
    • 2011-07-07
    • PCT/US2010/053179
    • 2010-10-19
    • CARDIAC PACEMAKERS, INC.FOSTER, Arthur J.BENTSEN, James G.
    • FOSTER, Arthur J.BENTSEN, James G.
    • A61N1/05A61N1/375A61N1/37
    • A61N1/056A61N1/086
    • Various embodiments relating to MRI safe, multi-polar active fixation stimulation leads with co-radial construction are disclosed. Some embodiments, allow the use of the generally smaller diameter co-radially constructed body (coated wires) to construct an active fixation lead, with an extendable/retractable fixation mechanism. Some embodiments use a connector assembly with an inner terminal ring, a terminal pin partially rotatably positioned within the annular inner terminal ring, and one or more resilient C-clips disposed within circumferential recesses. The resilient C-clips mechanically and electrically couple the inner terminal ring and the terminal ring while substantially limiting relative longitudinal translation of the terminal pin. In some embodiments, the connector assembly can be connected to an electrically inactive torque tube disposed longitudinally within the flexible body of the lead such that rotation of the terminal pin relative to the lead body causes rotation and longitudinal translation of a fixation helix relative to the body.
    • 公开了涉及具有同向径向结构的MRI安全,多极活动固定刺激引线的各种实施例。 一些实施例允许使用通常较小直径的共同径向构造的主体(涂覆线)来构造具有可伸缩/固定机构的主动固定引线。 一些实施例使用具有内部端子环的连接器组件,部分地可旋转地定位在环形内部端子环内的端子销以及设置在周向凹部内的一个或多个弹性C形夹。 弹性C形夹将机械和电耦合内端子环和端子环,同时基本上限制端子销的相对纵向平移。 在一些实施例中,连接器组件可以连接到纵向设置在引线的柔性体内的电惰性转矩管,使得端子销相对于引线体的旋转导致固定螺旋相对于主体的旋转和纵向平移 。
    • 3. 发明申请
    • IMPLANTABLE LEAD WITH SHIELDING
    • 可触控的铅屏蔽
    • WO2009076169A2
    • 2009-06-18
    • PCT/US2008/085533
    • 2008-12-04
    • CARDIAC PACEMAKERS, INC.AMERI, MasoudFOSTER, Arthur J.
    • AMERI, MasoudFOSTER, Arthur J.
    • A61N1/05
    • A61N1/05A61N1/086
    • Medical device leads with magnetic shielding and methods of shielding medical device leads from magnetic fields during medical procedures such as magnetic resonance imaging (MRI) are described. An illustrative implantable medical device includes a lead including a lead conductor having a length and a helically coiled ribbon shield radially surrounding the lead conductor along at least a portion of the length of the lead. The ribbon shield can include one or more inner ribbon conductors and/or one or more outer ribbon conductors. The outer ribbon conductor can have a variable width (e.g., a necked-down configuration, an arrowhead configuration, or an undulating configuration) along the length of the lead. In some cases, the helically coiled ribbon has a variable pitch along the length of the lead that may be the same as or different from that of the lead conductor pitch.
    • 描述了医疗装置引线的磁屏蔽和医疗装置引线在磁共振成像(MRI)等医疗过程中屏蔽磁场的方法。 示例性可植入医疗装置包括引线,该引线包括引线导体,该引线导体具有沿导线长度的至少一部分具有长度和螺旋状卷绕的带状屏蔽件,沿着引线导体径向包围引线导体。 带状屏蔽件可以包括一个或多个内部带状导体和/或一个或多个外部带状导体。 外带状导体可以具有沿引线长度的可变宽度(例如,颈缩配置,箭头配置或起伏构型)。 在一些情况下,螺旋卷绕的带沿引线的长度具有可变的间距,其可以与引线导体间距的相同或不同。
    • 4. 发明申请
    • LEAD WITH MRI COMPATIBLE DESIGN FEATURES
    • 具有MRI兼容设计特点的领导者
    • WO2009100003A1
    • 2009-08-13
    • PCT/US2009/032838
    • 2009-02-02
    • CARDIAC PACEMAKERS, INC.FOSTER, Arthur J.BOBGAN, Jean M.
    • FOSTER, Arthur J.BOBGAN, Jean M.
    • A61N1/08
    • A61N1/056A61N1/086
    • Implantable medical leads with magnetic shielding and methods of shielding implantable leads from magnetic fields during medical procedures such as magnetic resonance imaging (MRI) are disclosed. An exemplary implantable medical lead includes a helically coiled inner electrode conductor wire, a helically coiled outer electrode conductor wire disposed radially about the inner electrode conductor wire, and at least one layer of insulation that electrically isolates the inner and outer electrode conductor wires. The inner electrode conductor wire can have a hollowed, multifilar configuration including six or more co-radially wound wire filars. The outer electrode conductor wire is electrically isolated from the inner electrode conductor wire, and may have either a single or double filar configuration.
    • 公开了具有磁屏蔽的可植入医疗引线和在诸如磁共振成像(MRI)的医疗过程期间屏蔽来自磁场的可植入引线的方法。 示例性的可植入医疗引线包括螺旋线圈的内部电极导体线,围绕内部电极导体线径向设置的螺旋状卷绕的外部电极导线,以及至少一层电绝缘的内部和外部电极导线。 内部电极导线可以具有包括六个或更多个共同径向缠绕的线丝的中空的多相配置。 外部电极导体线与内部电极导线电隔离,并且可以具有单丝或双丝结构。
    • 5. 发明申请
    • ULTRASONIC MONITORING OF IMPLANTABLE MEDICAL DEVICES
    • 超声医疗器械的超声波监测
    • WO2012145104A1
    • 2012-10-26
    • PCT/US2012/029427
    • 2012-03-16
    • CARDIAC PACEMAKERS, INC.FOSTER, Arthur J.TRAN, Binh C.
    • FOSTER, Arthur J.TRAN, Binh C.
    • A61N1/372A61B8/08
    • A61N1/37217A61B6/12A61B6/487A61B8/0841A61B8/481A61N1/057F04C2270/0421
    • Systems and methods for ultrasonically monitoring implantable medical devices are disclosed. An ultrasonic monitoring system includes an ultrasonic transmitter that transmits an ultrasonic wave into the body, an implantable medical device including at least one ultrasonic reflecting unit configured for reflecting a portion of the ultrasonic wave, and an ultrasonic imaging monitor configured to receive a reflected portion of the ultrasonic wave and produce an ultrasonic image of the implantable medical device within the body. The ultrasonic reflecting unit can include an echogenic fluid medium that reflects a portion of the ultrasonic wave received from the ultrasonic transmitter. The ultrasonic reflecting units can be positioned at various locations on the device to produce localized areas of increased echogenicity, which can be used by the implanting physician to gauge the location of the device within the body.
    • 公开了用于超声波监测植入式医疗装置的系统和方法。 一种超声波监测系统,包括将超声波发送到体内的超声波发射器,可植入医疗装置,其包括构造成反射超声波的一部分的至少一个超声波反射部,以及超声波成像监视器, 超声波,并在体内产生可植入医疗装置的超声波图像。 超声波反射单元可以包括反射从超声波发送器接收的超声波的一部分的回波流体介质。 超声波反射单元可以定位在装置上的各个位置,以产生增加的回声反射性的局部区域,其可被植入医生用来测量装置在体内的位置。