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    • 51. 发明申请
    • Systems and Methods for Determining Optimal Interventricular Pacing Delays Based on Electromechanical Delays
    • 基于机电延迟确定最佳心室起搏延迟的系统和方法
    • US20120165890A1
    • 2012-06-28
    • US12976419
    • 2010-12-22
    • Xiaoyi Min
    • Xiaoyi Min
    • A61N1/365
    • A61N1/36585A61N1/3627A61N1/36521A61N1/36564A61N1/36578A61N1/3684
    • Techniques are provided for use with implantable medical devices such as pacemakers for optimizing interventricular (VV) pacing delays for use with cardiac resynchronization therapy (CRT). In one example, ventricular electrical depolarization events are detected within a patient in which the device is implanted. The onset of isovolumic ventricular mechanical contraction is also detected based on cardiomechanical signals detected by the device, such as cardiogenic impedance (Z) signals, S1 heart sounds or left atrial pressure (LAP) signals. Then, an electromechanical time delay (T_QtoVC) between ventricular electrical depolarization and the onset of isovolumic ventricular mechanical contraction is determined. VV pacing delays are set to minimize the time delay to the onset of isovolumic ventricular mechanical contraction. Various techniques for identifying the onset of isovolumic ventricular contraction based on Z, S1 or LAP or other cardiomechanical signals are described. In some examples, CRT nonresponders are specifically identified and/or heart failure progression is tracked.
    • 提供技术用于可植入医疗装置,例如用于优化用于心脏再同步治疗(CRT)的室间(VV)起搏延迟)的起搏器。 在一个示例中,在装置被植入的患者内检测到心室电去极化事件。 基于由器械检测到的心脏机械信号,例如心源阻抗(Z)信号,S1心脏音或左心房压力(LAP)信号,也检测到等容性心室机械收缩的发作。 然后,确定心室电去极化与等容性心室机械收缩发作之间的机电时间延迟(T_QtoVC)。 设定VV起搏延迟以最小化等容性心室机械收缩发作的时间延迟。 描述了基于Z,S1或LAP或其他心脏机械信号鉴别等容性心室收缩发作的各种技术。 在一些示例中,CRT无应答者被特异性识别和/或跟踪心力衰竭进展。
    • 52. 发明授权
    • Implantable medical device lead incorporating insulated coils formed as inductive bandstop filters to reduce lead heating during MRI
    • 可植入医疗器械引线,包含形成为感应性带阻滤波器的绝缘线圈,以减少MRI期间的铅加热
    • US08170687B2
    • 2012-05-01
    • US12537880
    • 2009-08-07
    • Xiaoyi MinPeter A. Nichols
    • Xiaoyi MinPeter A. Nichols
    • A61N1/00
    • A61N1/056A61N1/086
    • To provide radio-frequency (RF) bandstop filtering within an implantable lead, such as a pacemaker lead, one or more segments of the tip and ring conductors of the lead are formed as insulated coils to function as inductive band stop filters. By forming segments of the conductors into insulated coils, a separate set of discrete or distributed inductors is not required, yet RF filtering is achieved to, e.g., reduce lead heating during magnetic resonance imaging (MRI) procedures. To enhance the degree of bandstop filtering at the RF signal frequencies of MRIs, additional capacitive elements are added. In one example, the ring electrode of the lead is configured to provide capacitive shunting to the tip conductor. In another example, a capacitive transition is provided between the outer insulated coil and proximal portions of the ring conductor. In still other examples, conducting polymers are provided to enhance capacitive shunting. The insulated coils may be spaced at ¼ wavelength locations.
    • 为了在诸如起搏器引线的可植入引线内提供射频(RF)带阻滤波,引线的尖端和环形导体中的一个或多个段形成为用作电感带阻滤波器的绝缘线圈。 通过将导体的段形成为绝缘线圈,不需要单独的一组离散或分布式电感器,但是实现RF滤波以例如在磁共振成像(MRI)程序期间减少引线加热。 为了增强MRI的RF信号频率下的带阻滤波的程度,增加了附加的电容元件。 在一个示例中,引线的环形电极被配置为向尖端导体提供电容分流。 在另一示例中,在外绝缘线圈和环形导体的近端部分之间提供电容性跃迁。 在其它实例中,提供导电聚合物以增强电容分流。 绝缘线圈可以在1/4波长位置间隔开。
    • 54. 发明申请
    • MRI-COMPATIBLE IMPLANTABLE LEAD WITH IMPROVED LC RESONANT COMPONENT
    • 具有改进的LC谐振元件的MRI兼容可植入引线
    • US20110144722A1
    • 2011-06-16
    • US12635340
    • 2009-12-10
    • Xiaoyi MinIngmar Viohl
    • Xiaoyi MinIngmar Viohl
    • A61N1/05A61N1/36
    • A61N1/0573A61N1/086
    • An implantable lead is provided that comprises a lead body extending along a longitudinal axis. The lead body includes a distal end and a proximal end and a lumen within the lead body. The lead also includes a header assembly provided at the distal end of the lead body. The header assembly includes a tissue engaging end. The lead also includes an electrode provided on the header assembly. The electrode is configured to deliver stimulating pulses. The lead also includes an electrode conductor provided within the lumen of the lead body and extending from the electrode to the proximal end of the lead body. An LC resonant component is provided in at least one of the lead body and the header assembly. The LC resonant component comprises a capacitor having an elongated shape that extends along the longitudinal axis of the lead body. The capacitor has a core that is located about the longitudinal axis of the lead body. The LC resonant component further comprises an inductor wire wound in multiple turns about an exterior surface of the capacitor to form an inductor.
    • 提供了一种可植入引线,其包括沿着纵向轴线延伸的引线主体。 引线主体包括远端和近端以及引线主体内的内腔。 引线还包括设置在引线主体的远端的插头组件。 头部组件包括组织接合端。 引线还包括设置在插头组件上的电极。 电极配置为传递刺激脉冲。 引线还包括设置在引线主体的内腔内且从电极延伸到引线主体的近端的电极导体。 LC谐振元件设置在引线主体和插头组件中的至少一个中。 LC谐振元件包括具有沿引线本体的纵向轴线延伸的细长形状的电容器。 电容器具有围绕引线主体的纵向轴线定位的芯。 LC谐振分量还包括围绕电容器的外表面缠绕成多圈的电感器线,以形成电感器。
    • 58. 发明申请
    • IMPLANTABLE MEDICAL DEVICE LEAD INCORPORATING INSULATED COILS FORMED AS INDUCTIVE BANDSTOP FILTERS TO REDUCE LEAD HEATING DURING MRI
    • 可塑性医疗器械引线包含作为电感式带状过滤器形成的绝缘线圈,以减少MRI中的引线加热
    • US20110034979A1
    • 2011-02-10
    • US12537880
    • 2009-08-07
    • Xiaoyi MinPeter A. Nichols
    • Xiaoyi MinPeter A. Nichols
    • A61N1/05
    • A61N1/056A61N1/086
    • To provide radio-frequency (RF) bandstop filtering within an implantable lead, such as a pacemaker lead, one or more segments of the tip and ring conductors of the lead are formed as insulated coils to function as inductive band stop filters. By forming segments of the conductors into insulated coils, a separate set of discrete or distributed inductors is not required, yet RF filtering is achieved to, e.g., reduce lead heating during magnetic resonance imaging (MRI) procedures. To enhance the degree of bandstop filtering at the RF signal frequencies of MRIs, additional capacitive elements are added. In one example, the ring electrode of the lead is configured to provide capacitive shunting to the tip conductor. In another example, a capacitive transition is provided between the outer insulated coil and proximal portions of the ring conductor. In still other examples, conducting polymers are provided to enhance capacitive shunting. The insulated coils may be spaced at ¼ wavelength locations.
    • 为了在诸如起搏器引线的可植入引线内提供射频(RF)带阻滤波,引线的尖端和环形导体中的一个或多个段形成为用作电感带阻滤波器的绝缘线圈。 通过将导体的段形成为绝缘线圈,不需要单独的一组离散或分布式电感器,但是实现RF滤波以例如在磁共振成像(MRI)程序期间减少引线加热。 为了增强MRI的RF信号频率下的带阻滤波的程度,增加了附加的电容元件。 在一个示例中,引线的环形电极被配置为向尖端导体提供电容分流。 在另一示例中,在外绝缘线圈和环形导体的近端部分之间提供电容性跃迁。 在其它实例中,提供导电聚合物以增强电容分流。 绝缘线圈可以在1/4波长位置间隔开。
    • 59. 发明申请
    • SYSTEMS AND METHODS FOR DETERMINING VENTRICULAR PACING SITES FOR USE WITH MULTI-POLE LEADS
    • 用于确定多通道导管使用的透水性场地的系统和方法
    • US20110022112A1
    • 2011-01-27
    • US12639881
    • 2009-12-16
    • Xiaoyi Min
    • Xiaoyi Min
    • A61N1/365
    • A61N1/3627A61N1/3684
    • Techniques are provided for use by implantable medical devices for controlling multi-site left ventricular (MSLV) pacing using a multi-pole left ventricular (LV) lead. In various examples, a reduced number of “V sense”, “RV pace”, and “LV pace” tests are performed to determine preferred or optimal interventricular pacing delays (VV) for use with MSLV pacing. Additionally, techniques are described for sorting the order by which LV sites are to be paced during MSLV pacing. Furthermore, techniques are described for detecting and addressing circumstances where AV/PV delays are longer than corresponding AR/PR delays during MSLV.
    • 提供技术用于可植入医疗装置,以使用多极左心室(LV)引线来控制多部位左心室(MSLV)起搏。 在各种示例中,执行减少数量的“V感觉”,“RV步速”和“LV步调”测试以确定用于MSLV起搏的优选或最佳心室起搏延迟(VV)。 另外,描述了用于排序在MSLV起搏期间LV站点要起搏的顺序的技术。 此外,描述了用于检测和寻址在MSLV期间AV / PV延迟大于相应的AR / PR延迟的情况的技术。