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    • 1. 发明授权
    • Method and apparatus for delivering an optimum shock duration in treating cardiac arrhythmias
    • 用于在治疗心律失常中提供最佳休克持续时间的方法和装置
    • US06643545B2
    • 2003-11-04
    • US09915898
    • 2001-07-26
    • Raymond E. IdekerGregory P. WalcottStephen J. Hahn
    • Raymond E. IdekerGregory P. WalcottStephen J. Hahn
    • A61N139
    • A61N1/3937
    • The present invention provides apparatus and methods for delivering an optimum electrical shock in treating cardiac arrhythmias. The apparatus comprises means for producing an electrical waveform signal at least two electrodes The voltage or current of the signal is then detected to determine the signal time constant. The signal time constant is then used in conjunction with a model time constant to determine when the peak amplitude is reached. The waveform is then interrupted when the peak amplitude is reached. Also provided are methods of selecting a cardiac defibrillator by measuring the impedance of implanted electrodes and then selecting a defibrillator having a capacitor which provides an RC time constant equal to that of a model time constant.
    • 本发明提供了用于在治疗心律失常中递送最佳电击的装置和方法。 该装置包括用于在至少两个电极产生电波形信号的装置。然后检测信号的电压或电流以确定信号时间常数。 然后将信号时间常数与模型时间常数结合使用以确定何时达到峰值振幅。 当达到峰值振幅时,波形中断。 还提供了通过测量注入电极的阻抗然后选择具有提供等于模型时间常数的RC时间常数的电容器的除颤器来选择心脏除颤器的方法。
    • 7. 发明授权
    • Dual current pathway atrial defibrillation apparatus
    • 双通道心房除颤装置
    • US6006131A
    • 1999-12-21
    • US700694
    • 1996-08-13
    • Randolph A. CooperRaymond E. IdekerGregory P. Walcott
    • Randolph A. CooperRaymond E. IdekerGregory P. Walcott
    • A61N1/39
    • A61N1/3956A61N1/3918A61N1/395
    • An implantable system for the defibrillation of the atria of a patient's heart includes a first pair of atrial defibrillation electrodes configured for delivering a first atrial defibrillation pulse along a first current pathway in the heart, and a pulse generator operatively associated with the first pair of atrial defibrillation electrodes for delivering the first atrial defibrillation pulse. A second pair of atrial defibrillation electrodes configured for delivering a second atrial defibrillation pulse along a second current pathway in the heart is also included, with the second current pathway being different from the first current pathway. A pulse generator is operatively associated with the second pair of atrial defibrillation electrodes for delivering the second atrial defibrillation pulse after the first defibrillation pulse.
    • 用于对患者心脏的心房进行除颤的可植入系统包括:第一对心房除颤电极,其被配置为沿着心脏中的第一电流通路输送第一心房除颤脉冲;以及脉冲发生器,其与第一对心房 用于递送第一心房除颤脉冲的除颤电极。 还包括第二对心房除颤电极,其被配置用于沿着心脏中的第二电流通路递送第二心房除颤脉冲,其中第二电流通路不同于第一电流通路。 脉冲发生器可操作地与第二对心房除颤电极相关联,用于在第一除颤脉冲之后输送第二心房除颤脉冲。
    • 8. 发明授权
    • Shape memory catheter
    • 形状记忆导管
    • US5997526A
    • 1999-12-07
    • US621232
    • 1996-03-25
    • Jeffrey J. GibaGregory P. WalcottRaymond E. IdekerDonald A. Richardson
    • Jeffrey J. GibaGregory P. WalcottRaymond E. IdekerDonald A. Richardson
    • A61M25/00A61M25/01A61M25/16
    • A61M25/0041A61M25/0043A61B2018/00916A61M25/0158Y10T29/49865
    • A conformable catheter comprising a catheter handle, an elongated catheter tube, and a distal tip portion of the catheter tube, capable of assuming a desired pre-programmed shape. A wire member is disposed within the core of the catheter's tip portion and is formed of a material, such as, for example, a shape-memory binary nickel-titanium alloy, that will assume a pre-programmed shape after pre-shaping, heat treatment, cooling and subsequent heating. To pre-program the shape of the wire member, prior to assembly of the catheter, the wire member is wound around a shaped, heat resistant fixture, heated until the temperature of the wire member exceeds the temperature at which the shape of the wire member on the fixture becomes programmed into the wire member, and cooled. Upon subsequent heating of the wire member above its activation temperature after inclusion of the wire member into the catheter tubing, such as by controllably connecting the wire member to an electrical power source, the wire member, and thus the catheter's tip portion, assumes the pre-programmed curved or bent shape from its normally straight, generally linear disposition.
    • 包括导管手柄,细长导管管和导管管的远端尖端部分的适形导管能够呈现所需的预编程形状。 线构件设置在导管的尖端部分的芯部内,并且由诸如例如形状记忆二元镍钛合金的材料形成,其将在预成形之后呈现预编程形状,热量 处理,冷却和随后的加热。 为了对线材的形状进行预编程,在组装导管之前,将线材卷绕在成形的耐热夹具上,加热直到线材的温度超过线材的形状的温度 在夹具上编程成线材,并冷却。 在将线构件插入导管中之后,例如通过将线构件可控地连接到电源上,随后将丝线构件加热到其活化温度以上,线构件以及因此导管的尖端部分呈现预先 编程的弯曲或弯曲形状从其通常的直线,大致线性的布置。