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    • 92. 发明授权
    • System and method to accelerate individualized gain adjustment in implantable medical device systems
    • 用于加速植入式医疗设备系统中个体化增益调整的系统和方法
    • US07668593B1
    • 2010-02-23
    • US11694534
    • 2007-03-30
    • Xing PeiXiaoyi Min
    • Xing PeiXiaoyi Min
    • A61N1/36
    • A61N1/3704A61B5/0452A61N1/3622A61N1/368
    • A system and method for increasing the speed of individualizing amplifier gain optimization in implantable medical devices. A variable amplifier gain is initially set at a relatively high level such that the amplifier experiences at least intervals of saturation. A saturation indicator is determined which is indicative of the relative degree of saturation. The gain is then adjusted as a function of the saturation indicator. Relative larger degrees of saturation result in more aggressive gain adjustment. This increases the speed of adjustment with reduced likelihood of loss of sensing. In one implementation, one or more discrete amplifier gain adjustment steps are made in a single adjustment to effectively skip over intermediate adjustments. In another implementation, an estimate is made of a signal peak during a saturating interval. The gain is adjusted directly based on the estimated peak with appropriate sensing safety margins. The method can be implemented with a system including a programmer in communication with an implantable device.
    • 一种用于提高可植入医疗设备中个性化放大器增益优化的速度的系统和方法。 可变放大器增益最初设置在相对高的电平,使得放大器经历至少饱和的间隔。 确定饱和指示符,其表示相对饱和度。 然后根据饱和指标调整增益。 相对较大的饱和度导致更积极的增益调整。 这增加了调节速度,减少了感测丢失的可能性。 在一个实现中,在单个调整中进行一个或多个离散放大器增益调整步骤以有效跳过中间调整。 在另一实现中,在饱和间隔期间估计信号峰值。 基于具有适当感应安全裕度的估计峰值直接调整增益。 该方法可以利用包括与可植入装置通信的编程器的系统来实现。
    • 96. 发明授权
    • System and method for monitoring cardiac function via cardiac sounds using an implantable cardiac stimulation device
    • 使用可植入心脏刺激装置通过心脏声音监测心脏功能的系统和方法
    • US07139609B1
    • 2006-11-21
    • US10346809
    • 2003-01-17
    • Xiaoyi MinPaul A. LevineEuljoon Park
    • Xiaoyi MinPaul A. LevineEuljoon Park
    • A61B5/02A61N1/365
    • A61N1/36585A61B5/02A61B5/04004A61B5/0402A61B5/7239A61B7/04A61N1/3627
    • Techniques are provided for performing internal measurement of heart sounds to estimate patient cardiac function in terms of stroke volume, cardiac output, or a maximum rate of change of aortic pressure with time (max dP/dt). Control parameters of the medical device are then automatically adjusted so as to optimize overall cardiac function or to provide for ventricular resynchronization therapy. In one example, heart sound signals are derived from acceleration signals received from an accelerometer. The heart sound signals are analyzed to identify S1 and S2 heart sounds as well as ejection period and isovolumic interval (ISOV). Proxies for max dP/dt, stroke volume and cardiac output are then derived from the S1 and S2 heart sounds, the ejection period and the ISOV. Alternative techniques, not requiring detection of ISOV, are employed for use if the patient has heart value regurgitation.
    • 提供技术用于进行心脏声音的内部测量,以根据中风量,心输出量或主动脉压随时间的最大变化率(最大dP / dt)来估计患者心脏功能。 然后自动调节医疗装置的控制参数,以便优化整体心脏功能或提供心室再同步治疗。 在一个示例中,从加速度计接收的加速度信号导出心音信号。 分析心音信号以识别S1和S2心音,以及射血期和等容间隔(ISOV)。 然后从S1和S2心脏声音,射血期和ISOV导出最大dP / dt,搏出量和心输出量的代理。 如果患者有心脏反流,则采用不需要检测ISOV的替代技术。
    • 98. 发明授权
    • Cardioversion energy reduction system
    • 心律转换能量减少系统
    • US5836976A
    • 1998-11-17
    • US846747
    • 1997-04-30
    • Xiaoyi MinLi WangRahul MehraPaul J. DeGrootWalter H. OlsonLuc R. MongeonMichael R. S. Hill
    • Xiaoyi MinLi WangRahul MehraPaul J. DeGrootWalter H. OlsonLuc R. MongeonMichael R. S. Hill
    • A61N1/39
    • A61N1/3956A61N1/3925A61N1/3987
    • In an implantable pacemaker/cardioverter/defibrillator, a system for correlating the delivery of a cardioversion therapy to an optimum point or phase of the respiratory cycle of the patient to effect delivery of the therapy when the impedance between the cardioversion electrodes is minimized. In a first application for use with cardioversion electrodes located substantially in contact with the heart chamber, the optimum point or phase is at the end of inspiration. In a second application for use with at least one cardioversion electrode located remotely from the heart chamber, the optimum point or phase is at end expiration or beginning of inspiration. The cardioversion therapy is delivered in synchrony with a ventricular sense event, if present. If the optimum point or phase of the respiratory cycle cannot be determined during a therapy time, a pre-shock may be delivered to elicit a respiration cycle through a stimulated contraction of the diaphragm.
    • 在植入式心脏起搏器/心律转复除颤器中,用于将心脏复律治疗的输送与患者呼吸周期的最佳点或阶段相关联的系统,以在心脏复律电极之间的阻抗最小化时实现治疗的传递。 在与基本上与心脏腔室接触的心脏复律电极一起使用的第一个应用中,最佳点或阶段在吸气结束时。 在与远离心脏室的位置的至少一个心脏复律电极一起使用的第二个应用中,最佳点或阶段是结束期满或开始吸气。 复发疗法与心室感觉事件(如果存在)同步传递。 如果在治疗时间内不能确定呼吸周期的最佳点或相位,则可以传送预休克以通过振膜的刺激收缩引起呼吸循环。
    • 100. 发明授权
    • MRI compatible implantable medical lead and method of making same
    • MRI兼容的植入式医用引线及其制造方法
    • US09399129B2
    • 2016-07-26
    • US12262083
    • 2008-10-30
    • Yong D. ZhaoXiaoyi MinVirote Indravudh
    • Yong D. ZhaoXiaoyi MinVirote Indravudh
    • A61N1/00A61N1/05A61N1/08
    • A61N1/056A61N1/086
    • An implantable medical lead is disclosed herein. The lead may include a body and an electrical pathway. The body may include a distal portion with an electrode and a proximal portion with a lead connector end. The electrical pathway may extend between the electrode and lead connector end and may include a coiled inductor including first and second electrically conductive filar cores. The first and second filar cores may be physically joined into a unified single piece proximal terminal on a proximal end of the coiled inductor. The first and second cores may be physically joined into a unified single piece distal terminal on a distal end of the coiled inductor. The first and second filar cores may be helically wound into a coiled portion between the proximal and distal terminals, the filar cores being electrically isolated from each other in the coiled portion. The proximal terminal may be electrically coupled to a portion of the electrical pathway extending to the lead connector end, and the distal terminal may be electrically coupled to a portion of the electrical pathway extending to the electrode.
    • 本文公开了可植入医疗引线。 引线可以包括主体和电路径。 主体可以包括具有电极的远端部分和具有引线连接器端部的近端部分。 电路可以在电极和引线连接器端之间延伸并且可以包括包括第一和第二导电丝芯的线圈电感器。 第一和第二丝状芯可以物理地连接到线圈电感器的近端上的统一的单件式近端端子。 第一和第二芯可以物理地连接到线圈电感器的远端上的统一的单件式远端终端。 第一和第二丝芯可以螺旋地缠绕在近端和远端之间的线圈部分中,丝芯在线圈部分中彼此电隔离。 近端端子可以电连接到延伸到引线连接器端的电路径的一部分,并且远端端子可电耦合到延伸到电极的电路径的一部分。