公开(公告)号：WO1998042249A1

公开(公告)日：1998-10-01

申请号：PCT/IB1997000287

申请日：1997-03-21

Applicant: NELLCOR PURITAN BENNETT INC.

Inventor： NELLCOR PURITAN BENNETT INC. ,  BAKER, Clark, R., Jr. ,  YORKEY, Thomas, J.

IPC: A61B05/00

CPC classification number: A61B5/14551

Abstract: A method of reducing noise effects in a system for measuring a physiological parameter, comprises the steps of: (a) generating a plurality of measurements derived from at least one wavelength of electromagnetic energy transmitted through living tissue; (b) comparing selected measurements with at least one expected measurement characteristic; (c) assigning one of a plurality of variable weights to each selected measurement based on the comparing step thereby generating a plurality of differently weighted measurements; and (d) averaging a plurality of the differently weighted measurements to obtain a filtered measurement for use in estimating the physiological parameter.

Abstract translation: 一种减少用于测量生理参数的系统中的噪声影响的方法，包括以下步骤：（a）产生从透过活体组织的电磁能的至少一个波长衍生的多个测量值; （b）将所选择的测量与至少一个期望的测量特征进行比较; （c）基于所述比较步骤为每个所选择的测量分配多个可变权重中的一个，从而生成多个不同加权的测量; 和（d）对多个不同加权的测量进行平均以获得用于估计生理参数的滤波测量值。

公开(公告)号：WO1998043071A1

公开(公告)日：1998-10-01

申请号：PCT/IB1997000292

申请日：1997-03-21

Applicant: NELLCOR PURITAN BENNETT INC.

Inventor： NELLCOR PURITAN BENNETT INC. ,  BAKER, Clark, R., Jr. ,  YORKEY, Thomas, J.

IPC: G01N21/27

CPC classification number: A61B5/14551 ,  G01N21/274 ,  G01N21/3151

Abstract: A method of measuring a blood constituent value using data comprising a single data set comprises: (a) determining a plurality of possible blood constituent values using a plurality of blood constituent value calculators, each of the blood constituent value calculators using the single data set, each of the possible blood constituent values having a confidence level associated therewith based on at least one quality metric; and (b) arbitrating between the plurality of possible blood constituent values with regard to the confidence levels to determine a measure of the blood constituent.

Abstract translation: 使用包括单个数据集的数据测量血液成分值的方法包括：（a）使用多个血液成分值计算器确定多个可能的血液成分值，每个血液成分值计算器使用单个数据集， 基于至少一个质量度量，每个可能的血液成分值具有与其相关联的置信水平; 和（b）关于置信水平在多个可能的血液成分值之间进行仲裁以确定血液成分的量度。

公开(公告)号：WO1998042251A1

公开(公告)日：1998-10-01

申请号：PCT/IB1997000293

申请日：1997-03-21

Applicant: NELLCOR PURITAN BENNETT INC.

Inventor： NELLCOR PURITAN BENNETT INC. ,  BAKER, Clark, R., Jr. ,  YORKEY, Thomas, J.

IPC: A61B05/00

CPC classification number: A61B5/14551 ,  A61B5/7207 ,  A61B5/725

Abstract: A method for measuring a blood constituent using data corresponding to a wavelength of electromagnetic energy transmitted through tissue of a patient comprises a) filtering the data such that motion and noise energy not at integer multiples of a heart rate of the patient are attenuated, thereby generating filtered data; b) comparing selected filtered data with at least one expected data characteristic; c) assigning one of a plurality of variable weights to each selected filtered data based on the comparing step thereby generating a plurality of differently weighted filtered data, the variable weights comprising a plurality of different non-zero numbers; and d) averaging a plurality of the differently weighted filtered data to obtain a twice-filtered data for use in estimating the blood constituent.

Abstract translation: 使用与通过患者组织传输的电磁能的波长对应的数据来测量血液成分的方法包括：a）对数据进行滤波，使得不以患者心率的整数倍的运动噪声能量被衰减，从而产生 过滤数据; b）将选择的过滤数据与至少一个预期数据特征进行比较; c）基于所述比较步骤为每个所选滤波数据分配多个可变权重中的一个，从而生成多个不同加权的滤波数据，所述可变权重包括多个不同的非零数; 以及d）对多个不同加权的滤波数据进行平均以获得用于估计血液成分的两次滤波数据。

公开(公告)号：WO1998042250A1

公开(公告)日：1998-10-01

申请号：PCT/IB1997000290

申请日：1997-03-21

Applicant: NELLCOR PURITAN BENNETT INC.

Inventor： NELLCOR PURITAN BENNETT INC. ,  BAKER, Clark, R., Jr. ,  YORKEY, Thomas, J.

IPC: A61B05/00

CPC classification number: A61B5/14551 ,  A61B5/02416

Abstract: A method of generating a pulse rate of a patient using data corresponding to at least one wavelength of electromagnetic energy transmitted through tissue of the patient comprises (a) defining a comb filter to isolate signal energy in the data corresponding to a fundamental frequency and related higher frequency components thereof; (b) determining a particular frequency which optimizes energy at an output of the comb filter; and (c) generating a filtered pulse rate corresponding to the particular frequency.

Abstract translation: 使用对应于通过患者组织传播的至少一个波长的电磁能量的数据来产生患者的脉率的方法包括（a）定义梳状滤波器以隔离对应于基本频率的数据中的信号能量并且相关较高 频率分量; （b）确定在梳状滤波器的输出处优化能量的特定频率; 和（c）产生对应于特定频率的滤波脉冲速率。