Apparatus, software, and methods for cardiac pulse detection using a piezoelectric sensor
    7.
    发明授权
    Apparatus, software, and methods for cardiac pulse detection using a piezoelectric sensor 有权
    使用压电传感器进行心脏脉搏检测的装置,软件和方法

    公开(公告)号:US08160703B2

    公开(公告)日:2012-04-17

    申请号:US11187616

    申请日:2005-07-22

    IPC分类号: A61N1/362

    摘要: Signal data obtained from a piezoelectric sensor placed on a patient's body is used to detect the presence of a cardiac pulse. The piezoelectric sensor has a transducing element adapted to sense movement due to a cardiac pulse and produce piezoelectric signal data in response thereto. Processing circuitry analyzes the piezoelectric signal data for a feature indicative of a cardiac pulse and determines whether a cardiac pulse is present in the patient based on the feature. In one aspect, the feature may be a temporal feature such as a relative change in energy. In another aspect, the feature may be a spectral feature such as the energy or frequency of a peak in the energy spectrum of the signal. In yet another aspect, the feature may be obtained by comparing the piezoelectric signal data with a previously-identified pattern known to predict the presence of a cardiac pulse. Multiple features may also be obtained from the piezoelectric signal data and classified to determine the presence of a cardiac pulse.

    摘要翻译: 使用从放置在患者身上的压电传感器获得的信号数据来检测心脏脉搏的存在。 压电传感器具有适于感测由心脏脉搏引起的运动的传感元件,并响应于此产生压电信号数据。 处理电路分析用于表示心脏脉搏的特征的压电信号数据,并且基于特征确定患者心脏脉搏是否存在。 在一个方面,该特征可以是时间特征,例如能量的相对变化。 在另一方面,特征可以是光谱特征,例如信号的能谱中的峰的能量或频率。 在另一方面,可以通过将压电信号数据与已知的预测心脏脉搏的存在的先前识别的模式相比较来获得特征。 还可以从压电信号数据获得多个特征,并将其分类以确定心脏脉搏的存在。