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    • 3. 发明申请
    • SYSTEMS AND METHODS FOR MONITORING EFFECTIVENESS OF CONGESTIVE HEART FAILURE THERAPY
    • 用于监测充血性心力衰竭疗法的有效性的系统和方法
    • WO2008094816A3
    • 2008-10-16
    • PCT/US2008051978
    • 2008-01-25
    • MEDTRONIC INCSOWELAM SAMEHMARKOWITZ H TOBY
    • SOWELAM SAMEHMARKOWITZ H TOBY
    • A61B5/042A61B5/0285
    • A61B5/6826A61B5/0285A61B5/042A61B5/053A61B5/08A61B5/14551A61B5/4818A61B5/6838
    • A method for monitoring a patient includes measuring a series of consecutive pulse transit times (PTT's) of the patient, and processing the resulting PTT signal to detect a presence or absence of central sleep apnea (CSA). The method further includes determining an effectiveness of congestive heart failure therapy, which is being provided to the patient, based on the detected presence or absence of CSA. A system incorporating the method includes an electrode of an implantable medical device, which is adapted to pick up the patient's ventricular depolarization signals, a sensor, which is adapted to pick up peripheral arterial pulse signals of the patient, and a signal processor, which is adapted to receive the two types of signals and to process the signals according to the method. The system may provide the therapy via cardiac resynchronization pacing and, upon detection of CSA, the system may adjust at least one pacing parameter.
    • 用于监测患者的方法包括测量患者的一系列连续脉搏传播时间(PTT),并且处理所得到的PTT信号以检测中枢性睡眠呼吸暂停(CSA)的存在或不存在。 该方法进一步包括基于检测到的CSA的存在或不存在来确定提供给患者的充血性心力衰竭治疗的有效性。 结合该方法的系统包括适于拾取患者的心室去极化信号的可植入医疗设备的电极,适于拾取患者的外周动脉脉搏信号的传感器,以及信号处理器,其为 适于接收两种类型的信号并根据该方法处理信号。 系统可以通过心脏再同步起搏来提供治疗,并且在检测到CSA时,系统可以调整至少一个起搏参数。
    • 6. 发明申请
    • CHRONICALLY-IMPLANTABLE ACTIVE FIXATION MEDICAL ELECTRICAL LEADS AND RELATED METHODS FOR NON-FLUOROSCOPIC IMPLANTATION
    • 慢性植入式有源固定型医用电线及相关方法非手术植入
    • WO2008108901A8
    • 2010-02-18
    • PCT/US2007089087
    • 2007-12-28
    • MEDTRONIC INCMARKOWITZ H TOBYGIESE CHADWALDHAUSER STEVEN
    • MARKOWITZ H TOBYGIESE CHADWALDHAUSER STEVEN
    • A61B5/053A61N1/05
    • A61N1/0573A61B2034/2053A61N1/3627
    • Bio-impedance may be used for navigation systems to chronically implant pacing and defibrillation leads in the heart using a non-fluoroscopic position sensing unit (PSU), such as a modified LocaLisa® system from Medtronic Inc., which allows for variable frequency sampling of the position of electrode of a catheter. The PSU injects small AC signals via surface electrodes in three orthogonal axes, each on a slightly different frequency (e.g., near 30 KHz). Indwelling electrodes electrically connected to the PSU resolves the magnitude of induced voltage for each of the three frequencies, thus measuring voltage for each of the three axes. Voltages are divided by induced current to yield impedance in each axis for each electrode. Impedance is proportional to position within the body. Such a system requires that a conductive material, such as a retractable helical tip-electrode, be exposed during implantation. Since the tip is retracted during implantation, this disclosure provides a modified distal portion employing at least one aperture (or 'window') for fluid exposure of the helix-electrode and a deployable internal sleeve for covering the aperture(s) when the helix-electrode is extended.
    • 生物阻抗可用于导航系统,以使用非荧光位置感测单元(PSU)长期地在心脏中植入起搏和除颤引线,例如来自Medtronic Inc.的经修改的LocaLisa系统,该系统允许对 导管电极的位置。 PSU通过三个正交轴中的表面电极注入小的AC信号,每个在稍微不同的频率(例如,接近30KHz)处。 电连接到PSU的留置电极解决三个频率中的每一个的感应电压的大小,从而测量三个轴中的每一个的电压。 电压被感应电流除以每个电极的每个轴线产生阻抗。 阻抗与体内的位置成比例。 这样的系统需要在植入期间露出诸如可伸缩螺旋尖端电极的导电材料。 由于尖端在植入期间缩回,所以本公开提供了一种修改的远端部分,其采用用于螺旋电极的流体暴露的至少一个孔口(或“窗口”)和可展开的内部套筒, 电极延长。
    • 8. 发明专利
    • Pacemaker
    • 起搏器
    • JP2006272028A
    • 2006-10-12
    • JP2006199245
    • 2006-07-21
    • Medtronic Incメドトロニック・インコーポレーテッド
    • HESS MICHAEL FMARKOWITZ H TOBYBUSACKER JAMES W
    • A61N1/368A61N1/362
    • A61N1/3627A61N1/3682
    • PROBLEM TO BE SOLVED: To provide a pacemaker including an adjusting means for automatically adjusting ventricle atrial refractory period (PVARP) between heart rates.
      SOLUTION: This pacemaker includes the adjusting means for automatically adjusting PVARP between heart rates, and retains a value to 2:1 block point and an interval value corresponding to the 2:1 block point, and also AV interval value, wherein the adjusting means includes a means for determining the 2:1 block point to the sequence between the given heart rates; and means for setting the PVARP equal to an interval value obtained by subtracting one of the AV interval values from the interval value corresponding to the 2:1 block point.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种起搏器,其包括用于自动调节心率之间的心室心房不应期(PVARP)的调节装置。 解决方案:该起搏器包括用于在心率之间自动调节PVARP的调节装置,并且将值保持为2:1的阻挡点和对应于2:1阻挡点的间隔值,以及AV间隔值,其中 调整装置包括用于确定给定心率之间的序列的2:1块的装置; 以及用于将PVARP设置为等于通过从对应于2:1块点的间隔值中减去一个AV间隔值而获得的间隔值的装置。 版权所有(C)2007,JPO&INPIT