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    • 5. 发明申请
    • METHOD AND SYSTEM FOR STIMULATING A HEART
    • 用于刺激心脏的方法和系统
    • US20140257423A1
    • 2014-09-11
    • US13508968
    • 2011-05-31
    • Sven-Erik HedbergNils HolmstromKarin Jarverud
    • Sven-Erik HedbergNils HolmstromKarin Jarverud
    • A61N1/368
    • A61N1/368A61N1/3622A61N1/3682A61N1/3684
    • The present invention relates generally to implantable medical devices and more particularly to systems and methods for stimulating a heart of a patient. A first ventricle is activated by delivering stimulation to at least one stimulation site, a point of time for arrival at the AV node for at least one depolarization wave resulting from the stimulation in the first ventricle is estimated and a first activation time interval substantially corresponding to the time interval required for at least one depolarization wave to travel from the stimulation site in the first ventricle to the AV node using the estimated point of time for arrival of the depolarization wave and a point of time for delivery of stimulation is computed. Thereafter, the other ventricle is stimulated by delivering stimulation to at least one stimulation site. A point of time for arrival at the AV node for at least one depolarization wave resulting from the stimulation in the other ventricle is then estimated and a second activation time interval substantially corresponding to the time required for at least one depolarization wave to travel from the stimulation site in the other ventricle to the AV node using the estimated arrival of the depolarization wave and the point of time for delivery of stimulation is computed. Based on these activation time intervals and a difference between the intervals, a pacing therapy can be determined, wherein the first ventricle is paced prior to activation of the other ventricle if the activation time difference indicates that the first activation time interval is longer than the second activation time interval and the other ventricle is paced prior to activation of the first ventricle if the activation time difference indicates that the second activation time interval is longer than the first activation time interval.
    • 本发明一般涉及可植入医疗装置,更具体地涉及用于刺激患者心脏的系统和方法。 通过向至少一个刺激部位递送刺激来激活第一脑室,估计到达在第一脑室刺激产生的至少一个去极化波的AV节点的时间点,并且基本对应于 计算使用去极化波的到达的估计时间点和用于递送刺激的时间点的至少一个去极化波从第一脑室的刺激部位行进到AV节点所需的时间间隔。 此后,通过将刺激递送至至少一个刺激部位刺激另一个心室。 然后估计到达AV节点对于在另一个心室中的刺激产生的至少一个去极化波的时间点,并且基本对应于至少一个去极化波从刺激行进所需的时间的第二激活时间间隔 计算使用去极化波的估计到达和输送刺激的时间点在AV节点的另一脑室中的位置。 基于这些激活时间间隔和间隔之间的差异,可以确定起搏治疗,其中如果激活时间差指示第一激活时间间隔长于第二心室第二激活时间间隔,则第一心室在另一心室激活之前起搏 如果所述激活时间差指示所述第二激活时间间隔长于所述第一激活时间间隔,则所述激活时间间隔和所述另一个心室在所述第一心室激活之前起步。
    • 7. 发明申请
    • IMPLANTABLE MEDICAL DEVICE AND METHOD FOR MULTISITE MEASUREMENT OF INTRACARDIAC IMPEDANCE
    • 可植入医疗装置和方法用于多药耐药的测量
    • US20120184866A1
    • 2012-07-19
    • US13498568
    • 2009-09-29
    • Nils HolmstromAnders Bjorling
    • Nils HolmstromAnders Bjorling
    • A61B5/0408
    • A61N1/36521A61B5/053A61B5/686A61N1/3627A61N1/3702A61N1/3956
    • The present invention generally relates to an implantable medical device and method for detecting and monitoring cardiac status of a patient using simultaneous multisite measurements of the intracardiac impedance and in particular to ischemia detection using the simultaneous multisite measurements. The device comprises an impedance measuring unit being connectable to a plurality of electrode configurations including a current generating device adapted to generate a current and apply the current between two electrodes of a current injecting electrode configuration of the electrode configurations and a voltage sensing device including a plurality of voltage sensing circuits arranged in parallel. Each voltage sensing circuit being connectable to a specific voltage sensing electrode configuration of the electrode configurations and being arranged to sense a voltage over the voltage sensing electrode configuration resulting from the applied current, wherein the voltage sensing circuits are capable of sensing the resulting voltages simultaneously. The device further comprises an impedance calculating module adapted to calculate a plurality of impedance values, each impedance value being based on the applied current and a resulting voltage.
    • 本发明总体上涉及一种可植入医疗装置和方法,用于使用同时进行心脏内阻抗的多站点测量来检测和监测患者的心脏状态,特别是使用同时多站点测量的缺血检测。 该装置包括阻抗测量单元,其可连接到多个电极配置,包括适于产生电流的电流产生装置,并施加电极配置的电流注入电极配置的两个电极之间的电流;以及电压感测装置,包括多个 的电压感测电路并联布置。 每个电压感测电路可连接到电极配置的特定电压感测电极配置,并且布置成感测由所施加的电流产生的电压感测电极配置上的电压,其中电压感测电路能够同时感测所得到的电压。 该装置还包括适于计算多个阻抗值的阻抗计算模块,每个阻抗值基于所施加的电流和所得到的电压。
    • 9. 发明申请
    • IMPLANTABLE HEART STIMULATION DEVICE WITH REMEDIAL RESPONSE TO ANODAL CAPTURE
    • 具有针对阳极捕获的补救措施的可植入心脏刺激装置
    • US20090030470A1
    • 2009-01-29
    • US12160849
    • 2006-01-26
    • Nils HolmstromAnders Bjorling
    • Nils HolmstromAnders Bjorling
    • A61N1/368
    • A61N1/371A61N1/3684
    • An implantable heart stimulating device has a left ventricular coronary sinus electrode lead provided with a tip electrode, a right ventricular electrode lead provided with a ring electrode, and a pulse generator connected to the leads that applies stimulation pulses between the tip electrode and the ring electrode, with the tip electrode serving as the anode. A monitoring unit monitors for and detects anodal capture at the right ventricular ring electrode subsequent to a stimulation. If anodal capture is detected, either a threshold search is performed by varying the pulse width and/or pulse amplitude of stimulation pulses in order to identify stimulation pulse characteristics that avoid anodal capture at the ring electrode, or at least one further electrode is activated to function as an indifferent electrode together with the ring electrode, also in order to avoid anodal capture at the ring electrode.
    • 可植入心脏刺激装置具有设置有尖端电极的左心室冠状窦电极引线,设置有环形电极的右心室电极引线和连接到引线的脉冲发生器,其在尖端电极和环形电极之间施加刺激脉冲 ,尖端电极用作阳极。 监测单元在刺激之后监测和检测右心室环电极处的阳极捕获。 如果检测到阳极捕获,则通过改变刺激脉冲的脉冲宽度和/或脉冲幅度来执行阈值搜索,以便识别避免在环形电极处的阳极捕获的刺激脉冲特性,或者至少一个另外的电极被激活 与环形电极一起作为无关电极,也是为了避免在环形电极处的阳极捕获。