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    • 77. 发明授权
    • Detection of pleural effusion using transthoracic impedance
    • 使用经胸阻塞检测胸腔积液
    • US07979115B2
    • 2011-07-12
    • US11972405
    • 2008-01-10
    • Jeffrey E. StahmannJohn HatlestadJesse W. HartleyRichard Fogoros
    • Jeffrey E. StahmannJohn HatlestadJesse W. HartleyRichard Fogoros
    • A61B5/05
    • A61B5/0205A61B5/0031A61B5/0535A61B5/1116A61B5/4869A61N1/36521A61N1/36535
    • This patent document discusses systems, devices, and methods for increasing a sensitivity or specificity of thoracic fluid detection in a subject and differentiating between pleural effusion and pulmonary edema. In one example, a thoracic impedance measurement circuit senses a thoracic impedance signal. In another example, a processor receives the thoracic impedance signal and determines whether such thoracic impedance signal is “significant.” A significant thoracic impedance signal indicates the presence of thoracic fluid and may be recognized by comparing the thoracic impedance signal (or variation thereof) to a thoracic impedance threshold. When a significant thoracic impedance signal is recognized, the processor is adapted to detect one or both of: a pleural effusion indication and a pulmonary edema indication using one or a combination of: physiologic information, patient symptom information, and posture information. In another example, the thoracic impedance threshold is adjusted using such physiologic, patient symptom, or posture information.
    • 该专利文献讨论了用于增加受试者胸部液体检测的敏感性或特异性并区分胸腔积液和肺水肿的系统,装置和方法。 在一个示例中,胸部阻抗测量电路感测胸部阻抗信号。 在另一示例中,处理器接收胸部阻抗信号并确定这种胸部阻抗信号是否“显着”。显着的胸部阻抗信号表示胸腔存在,并且可以通过将胸部阻抗信号(或其变化)与 胸阻抗阈值。 当识别出显着的胸部阻抗信号时,处理器适合于使用生理信息,患者症状信息和姿势信息中的一个或组合来检测胸腔积液指示和肺水肿指示之一或两者。 在另一个例子中,使用这种生理,患者症状或姿势信息来调整胸阻抗阈值。
    • 78. 发明申请
    • ENHANCEMENTS TO THE DETECTION OF PULMONARY EDEMA WHEN USING TRANSTHORACIC IMPEDANCE
    • 使用潮热阻力时检测脉搏电流的增强
    • US20110144526A1
    • 2011-06-16
    • US13033081
    • 2011-02-23
    • Jeffrey E. StahmannJohn HatlestadJesse W. Hartley
    • Jeffrey E. StahmannJohn HatlestadJesse W. Hartley
    • A61B5/053
    • A61B5/0537A61B5/0002A61B5/0538A61B5/4869A61B5/4878
    • This patent document discusses, among other things, systems, devices, and methods for enhancing detection of pulmonary edema using, in addition to thoracic impedance, one or a combination of: physiologic information about a subject, at least one statistical parameter, a user-programmable detection level, at least one parameter associated with a previous pulmonary edema event, and patient symptom information about the subject. In one example, a (base) thoracic impedance threshold is modified to an adjusted thoracic impedance threshold. The adjusted thoracic impedance threshold provides an increased sensitivity of pulmonary edema detection as compared to the base thoracic impedance threshold. In another example, an alert is provided to a subject, a caregiver, or other user based on a pulmonary edema indication determined by the present systems, devices, and methods. In a further example, a therapy (provided to the subject) is adjusted or initiated in response to the pulmonary edema indication.
    • 该专利文献尤其涉及用于增强肺水肿检测的系统,装置和方法,除胸部阻抗之外,还包括以下之一或组合:关于受试者的生理信息,至少一个统计参数, 可编程检测水平,与先前的肺水肿事件相关联的至少一个参数,以及关于受试者的患者症状信息。 在一个示例中,(基底)胸部阻抗阈值被修改为经调整的胸部阻抗阈值。 与基础胸廓阻抗阈值相比,经调整的胸廓阻抗阈值提供了肺水肿检测的灵敏度增加。 在另一示例中,基于由本系统,设备和方法确定的肺水肿指示,向受检者,照顾者或其他用户提供警报。 在另一个实例中,响应于肺水肿指示调整或启动治疗(提供给受试者)。