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    • 51. 发明授权
    • Adaptive and morphological system for discriminating P-waves and R-waves
inside the human body
    • 用于辨别人体内P波和R波的自适应和形态系统
    • US5755739A
    • 1998-05-26
    • US759902
    • 1996-12-04
    • Weimin SunPamela A. AbshireEric J. PankenWilliam J. Combs
    • Weimin SunPamela A. AbshireEric J. PankenWilliam J. Combs
    • A61B5/0452A61N1/368A61N1/37A61N1/362A61B5/0464
    • A61N1/3704A61B5/04525A61N1/368
    • The present invention is a method and apparatus for processing a sensed atrial electrogram in conjunction with a sensed ventricular electrogram. The present invention permits accurate discrimination of atrial P-waves from far field ventricular events such as far field R-waves and avoids oversensing such far field ventricular events as atrial sense events and undersensing atrial events occurring within a fusion beat masked by a far field ventricular event in the atrial electrogram. Atrial channel trigger signals are generated in response to sensed P-waves and far field R-waves in the atrial electrogram, and ventricular trigger signals are generated in response to sensed R-waves in the ventricular electrogram. In response to each ventricular channel trigger signal, the sensed atrial electrogram signal is adaptively filtered for an adaptive filter time window only to remove the far field R-wave signal from the sensed atrial electrogram signal while avoiding adaptive filtering of the sensed atrial electrogram signal at other times. In response to each atrial channel trigger signal, the adaptively filtered, sensed atrial electrogram signal is subjected to morphological analysis in respect of a morphological model of a P-wave only during a morphology time window. In this manner, P-waves in the sensed atrial electrogram signal are detected and far field R-waves in the sensed atrial electrogram signal are not mistakenly detected as P-waves, while morphological analysis of the sensed atrial electrogram at other times is avoided.
    • 本发明是一种结合感测的心室电描记图处理感测的心房电描记图的方法和装置。 本发明允许从远场心室事件(例如远场R波)中准确地辨别心房P波,并避免过度监测诸如心房感觉事件的远场心室事件以及在由远场心室掩蔽的融合搏动内发生的低度心房事件 心房电图中的事件。 响应于心房电描记图中的感测到的P波和远场R波产生心房通道触发信号,并且响应于心室电图中的感测到的R波而产生心室触发信号。 响应于每个心室通道触发信号,感测的心房电描记信号被自适应滤波以用于自适应滤波器时间窗口,仅从感测的心房电描记图信号中去除远场R波信号,同时避免对感测的心房电描记图信号的自适应滤波 其他时候。 响应于每个心房通道触发信号,仅在形态学时间窗口期间,自适应滤波感应的心房电描记信号就P波的形态学模型进行形态学分析。 以这种方式,检测到感测的心房电描记信号中的P波,并且将感测到的心房电描记信号中的远场R波未被错误地检测为P波,同时避免了其他时间的感测的心房电描记图的形态学分析。
    • 52. 发明授权
    • Method and apparatus for rate-responsive cardiac pacing
    • 速率响应心脏起搏方法和装置
    • US5562711A
    • 1996-10-08
    • US346813
    • 1994-11-30
    • Charles G. YerichWilliam J. CombsKaren J. KlecknerEric J. PankenRichard S. SchallhornJohn D. Wahlstrand
    • Charles G. YerichWilliam J. CombsKaren J. KlecknerEric J. PankenRichard S. SchallhornJohn D. Wahlstrand
    • A61N1/365
    • A61N1/36585
    • A body-implantable rate-responsive cardiac pacemaker is provided with circuitry for sensing a plurality of physiologic parameters known to be indicative of a patient's metabolic demand for increased cardiac output. In one embodiment, a rate-responsive pacemaker is provided with an activity sensor for detecting the patient's level of physical activity, and is further provided with an impedance sensing circuit for detecting the patient's level of minute ventilation by monitoring cardiac impedance. A rate-response transfer function, implemented by the pacemaker's control circuitry, periodically computes a rate-responsive pacing rate as a function of the outputs from both physiologic sensing circuits. The pacemaker's pacing rate is variable within a rate range defined by predetermined (programmable) upper and lower limits. In the preferred embodiment, the influence of activity sensing and minute ventilation parameters varies in accordance with the current pacing rate. In particular, the influence of activity sensing in rate determination in accordance with the rate-response function is greater than that of minute ventilation, for slower pacing rates, while the influence of minute ventilation sensing dominates over that of activity sensing for higher pacing rates. Rate response operation of the disclosed system is recorded in the form of histogram data stored over a predetermined history time. The relative influence of the activity sensing and minute ventilation sensing on rate determination is periodically scaled or balanced based upon comparison of the histogram data with predetermined desired response data.
    • 身体植入式速率响应心脏起搏器被提供有用于感测已知指示患者对增加的心输出量的代谢需求的多个生理参数的电路。 在一个实施例中,速率响应起搏器设置有用于检测患者的身体活动水平的活动传感器,并且还设置有阻抗感测电路,用于通过监测心脏阻抗来检测患者的分钟通气水平。 由起搏器的控制电路实现的速率响应传递函数周期性地计算速率响应起搏速率作为来自生理感测电路的输出的函数。 起搏器的起搏速率在由预定(可编程)上限和下限限定的速率范围内是可变的。 在优选实施例中,活动感测和分钟通气参数的影响根据当前起搏速率而变化。 特别是,根据速率响应函数的速率测定中的活动检测的影响大于分钟通气量,对于较慢的起搏速率,而微动通气检测的影响比活动检测的影响高于起搏率。 以预定历史时间存储的直方图数据的形式记录所公开的系统的速率响应操作。 基于直方图数据与预定的期望响应数据的比较,活动感测和分钟通气感测对速率确定的相对影响被周期地缩放或平衡。
    • 53. 发明授权
    • Blended posture state classification and therapy delivery
    • 混合姿势状态分类和治疗传递
    • US09327129B2
    • 2016-05-03
    • US12433038
    • 2009-04-30
    • Eric J. Panken
    • Eric J. Panken
    • A61N1/00A61N1/365A61B5/11A61B5/00
    • A61N1/36542A61B5/1116A61B5/1118A61B5/686A61B5/7264A61B2562/0219A61N1/36535G06F19/00
    • Techniques for classification of a posture state of a patient using multiple posture state definitions, and for delivering therapy according to the patient's classified posture state. Detected parameter values describing a patient's posture state are compared to posture state definitions. This comparison is used to determine similarity values describing how similar the patient's posture state is to each of the posture states described by the posture state definitions. Weighting factors may be determined from the similarity values and used to weight therapy parameter values that are associated with each of the posture state definitions. The resulting weighted therapy parameter values may be used to derive a blended therapy parameter value for use in delivering therapy to the patient. The patient's posture state may be expressed in terms of a blending of the multiple posture state definitions.
    • 用于使用多个姿势状态定义对患者的姿势状态进行分类的技术,以及根据患者分类的姿势状态进行治疗的技术。 将描述患者姿势状态的检测参数值与姿势状态定义进行比较。 该比较用于确定描述患者姿势状态与由姿势状态定义描述的每个姿势状态相似的相似性值。 加权因子可以根据相似度值确定并用于与每个姿势状态定义相关联的加权治疗参数值。 所得到的加权治疗参数值可用于导出用于向患者递送疗法的混合治疗参数值。 患者的姿势状态可以用多姿势状态定义的混合来表示。
    • 55. 发明授权
    • Posture state classification for a medical device
    • 医疗器械的姿态分类
    • US08958885B2
    • 2015-02-17
    • US12433004
    • 2009-04-30
    • Eric J. PankenDennis M. Skelton
    • Eric J. PankenDennis M. Skelton
    • A61N1/00A61N1/365A61B5/11A61B5/00
    • A61N1/36542A61B5/1116A61B5/1118A61B5/686A61B5/7264A61B2562/0219A61N1/36535G06F19/00
    • One embodiment relates to a medical device including a sensor to provide signals indicative of a detected posture state of a patient. A memory stores one or more defined vectors, each defined vector being associated with a tolerance describing a relationship with the defined vector. A processor determines a respective similarity between the detected vector and each of one or more of the defined vectors and classifies a posture state of the patient based on whether any similarity has a relationship to the respective defined vector that is described by the associated tolerance. In one embodiment, the similarity is determined without regard to a coordinate system of the patient. Another embodiment relates to determining the similarity based on at least one of an inner product, a length of the defined posture vector and a length of the detected vector.
    • 一个实施例涉及一种医疗设备,其包括用于提供指示患者的检测到的姿势状态的信号的传感器。 存储器存储一个或多个定义的向量,每个定义的向量与描述与所定义的向量的关系的公差相关联。 处理器确定检测到的矢量与所定义的一个或多个矢量中的每一个之间的各自的相似度,并且基于任何相似性是否与由相关联的容限描述的相应定义的矢量具有关系来对患者的姿势状态进行分类。 在一个实施例中,不考虑患者的坐标系确定相似度。 另一实施例涉及基于内积,所定义的姿态向量的长度和所检测的向量的长度中的至少一个来确定相似性。
    • 59. 发明申请
    • POSTURE STATE RESPONSIVE THERAPY DELIVERY USING DWELL TIMES
    • 使用DWELL时间的心理状态的治疗方法
    • US20100010381A1
    • 2010-01-14
    • US12433017
    • 2009-04-30
    • Dennis M. SkeltonJon P. DavisEric J. Panken
    • Dennis M. SkeltonJon P. DavisEric J. Panken
    • A61B5/103
    • A61N1/36542A61B5/1116A61B5/1118A61B5/686A61B5/7264A61B2562/0219A61N1/36535G06F19/00
    • Techniques related to classifying a posture state of a living body are disclosed. One aspect relates to sensing at least one signal indicative of a posture state of a living body. Posture state detection logic classifies the living body as being in a posture state based on the at least one signal, wherein this classification may take into account at least one of posture and activity state of the living body. The posture state detection logic further determines whether the living body is classified in the posture state for at least a predetermined period of time. Response logic is described that initiates a response as a result of the body being classified in the posture state only after the living body has maintained the classified posture state for at least the predetermined period of time. This response may involve a change in therapy, such as neurostimulation therapy, that is delivered to the living body.
    • 公开了对活体姿势状态进行分类的技术。 一个方面涉及感测指示生物体的姿势状态的至少一个信号。 姿势状态检测逻辑基于至少一个信号将生物体分为处于姿势状态,其中该分类可以考虑活体的姿势和活动状态中的至少一个。 姿势状态检测逻辑进一步确定生物体是否至少在预定时间段内分类为姿势状态。 描述了响应逻辑,其仅在生物体至少在预定时间段内保持分类姿势状态之后,作为身体被分类为姿势状态的结果而发起响应。 这种反应可能涉及到递送到生物体的治疗方法,如神经刺激疗法。