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公开(公告)号：US20110066016A1
公开(公告)日：2011-03-17
申请号：US12952815
申请日：2010-11-23
IPC分类号： A61B5/1455
CPC分类号： A61B5/6826 , A61B5/14552 , A61B5/6838 , A61B2562/164
摘要： A medical sensor may be adapted to prevent unwanted light and electrical interference from corrupting physiological measurements. Sensors are provided with features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce crosstalk between electrical signals, increasing the accuracy of measurements. The sensor is also adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements.
摘要翻译： 医疗传感器可以适于防止不必要的光和电干扰破坏生理测量。 传感器具有减少撞击传感器检测元件的外部光线或分流光量的特征。 该传感器适用于减少电信号之间的串扰，从而提高测量的准确性。 该传感器还适用于减少外部光线或分流光线对脉搏血氧饱和度测量的影响。
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公开(公告)号：US20090163083A1
公开(公告)日：2009-06-25
申请号：US12322035
申请日：2009-01-28
IPC分类号： H01R24/00
CPC分类号： H01R13/6461 , A61B5/1455 , A61B2562/222 , H01R9/035 , H01R13/6658
摘要： A device and method for reducing crosstalk between wires is provided. The method includes spatially separating first and second sets of wires. A device is disposed relative to the first and second sets of wires to maintain the spatial separation. The method also comprises coupling pins to the first and second sets of wires. Additionally, the method includes covering the device with a connector housing.
摘要翻译： 提供一种用于减少电线之间的串扰的装置和方法。 该方法包括在空间上分离第一组和第二组导线。 相对于第一组和第二组线设置器件以保持空间间隔。 该方法还包括将销连接到第一组和第二组导线。 另外，该方法包括用连接器壳体覆盖该设备。
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公开(公告)号：US20090005662A1
公开(公告)日：2009-01-01
申请号：US12172981
申请日：2008-07-14
申请人： Ethan Petersen , William Shea , Bradford B. Chew
发明人： Ethan Petersen , William Shea , Bradford B. Chew
IPC分类号： A61B5/02
CPC分类号： A61B5/14552 , A61B5/0205 , A61B5/02416 , A61B5/14551 , A61B5/7203 , A61B5/7225 , A61B5/7228 , A61B5/725 , A61B5/7278
摘要： A pulse oximeter method and apparatus which provides (1) a notch filter at a distance between a modulation frequency and a common multiple of commonly used power line frequencies (50, 60, 100 and 120) and also (2) a demodulation frequency greater than a highest pulse rate of a person and lower than any harmonic of 50, 60, 100 or 120 Hz, to filter ambient light interference, while choosing an optimum demodulation frequency that avoids interference from the notch filter or from harmonics of the line interference. Also, ambient light for any low frequency interference, such as power line interference, is measured both before and after each of the light emitter wavelengths and the average of the ambient light is then subtracted from the detected signal.
摘要翻译： 一种脉冲血氧计方法和装置，其提供（1）陷波滤波器，其在调制频率和共同使用的电力线频率（50,60,100和120）的公倍数之间的距离处，以及（2）大于 一个人的最高脉冲频率，低于50,60,100或120Hz的任何谐波，以过滤环境光干扰，同时选择避免陷波滤波器干扰或线干扰谐波的最佳解调频率。 此外，在每个发光体波长之前和之后都测量任何低频干扰（例如电力线干扰）的环境光，然后从检测到的信号中减去环境光的平均值。
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公开(公告)号：US06490466B1
公开(公告)日：2002-12-03
申请号：US09668032
申请日：2000-09-21
申请人： Michael E. Fein , Bradford B. Chew
发明人： Michael E. Fein , Bradford B. Chew
IPC分类号： A61B500
CPC分类号： A61B5/14551 , A61B5/14552 , A61B2560/045
摘要： An oximeter sensor adapter which allows a sensor without a resistor in parallel with its LEDs to operate with an oximeter expecting such a resistor in parallel. The adapter has a switching circuit which has inputs connected to the LED drive outputs of the oximeter. The switching circuit has two pairs of outputs, one connected to the LED drive lines of the sensor, and the other connected to a resistor in the adapter itself. The switching circuit is controlled by a sensing circuit which senses when a signal on the input lines drops below a predetermined level, such as 0.5 volts. The sensing circuit, in response to a low voltage (corresponding to an attempt to read a resistor in parallel with the LEDs), will provide a signal to a switching circuit. The switching circuit will switch the resistor onto the input lines so that it can be read. When a higher voltage returns to the input lines, the switching circuit switches back to the LEDs themselves.
摘要翻译： 一个血氧计传感器适配器，允许一个传感器没有与其并联的电阻器与一个期望并联电阻器的血氧计一起工作。 适配器具有切换电路，其具有连接到血氧计的LED驱动器输出的输入。 开关电路具有两对输出，一对连接到传感器的LED驱动线，另一对连接到适配器本身的电阻器。 开关电路由感测电路控制，该感测电路检测输入线路上的信号何时下降到预定电平（例如0.5伏特）。 感测电路响应于低电压（对应于尝试读取与LED并联的电阻器），将向开关电路提供信号。 开关电路将电阻切换到输入线，以便读取。 当较高的电压返回到输入线时，开关电路自身切换回LED。
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公开(公告)号：US6023541A
公开(公告)日：2000-02-08
申请号：US40218
申请日：1998-03-17
IPC分类号： G01N21/01 , A61B5/00 , A61B5/145 , A61B5/1455 , G01N21/35 , G01N35/00 , G02B6/35 , G01N33/49
CPC分类号： A61B5/14551 , A61B2560/045 , A61B2562/08 , G01N35/00732
摘要： An adapter which actively connects a 2-lead oximeter probe or monitor to a 3-lead monitor or probe. This is done actively, with the alternating drive signals from the oximeter monitor providing a control signal for switching the adapter connections. The adapter connections are preferably made with diodes, transistors, or other active devices.
摘要翻译： 适配器，主动将2导联血氧仪探头或监视器连接到3引线监视器或探头。 这是积极的，来自血氧计监测器的交替驱动信号提供用于切换适配器连接的控制信号。 适配器连接优选地由二极管，晶体管或其它有源器件制成。
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公开(公告)号：US08315684B2
公开(公告)日：2012-11-20
申请号：US12172981
申请日：2008-07-14
申请人： Ethan Petersen , William Shea , Bradford B. Chew
发明人： Ethan Petersen , William Shea , Bradford B. Chew
IPC分类号： A61B5/1455
CPC分类号： A61B5/14552 , A61B5/0205 , A61B5/02416 , A61B5/14551 , A61B5/7203 , A61B5/7225 , A61B5/7228 , A61B5/725 , A61B5/7278
摘要： A pulse oximeter method and apparatus which provides (1) a notch filter at a distance between a modulation frequency and a common multiple of commonly used power line frequencies (50, 60, 100 and 120) and also (2) a demodulation frequency greater than a highest pulse rate of a person and lower than any harmonic of 50, 60, 100 or 120 Hz, to filter ambient light interference, while choosing an optimum demodulation frequency that avoids interference from the notch filter or from harmonics of the line interference. Also, ambient light for any low frequency interference, such as power line interference, is measured both before and after each of the light emitter wavelengths and the average of the ambient light is then subtracted from the detected signal.
摘要翻译： 一种脉冲血氧计方法和装置，其提供（1）陷波滤波器，其在调制频率和共同使用的电力线频率（50,60,100和120）的公倍数之间的距离处，以及（2）大于 一个人的最高脉冲频率，低于50,60,100或120Hz的任何谐波，以过滤环境光干扰，同时选择避免陷波滤波器干扰或线干扰谐波的最佳解调频率。 此外，在每个发光体波长之前和之后都测量任何低频干扰（例如电力线干扰）的环境光，然后从检测到的信号中减去环境光的平均值。
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公开(公告)号：US07869849B2
公开(公告)日：2011-01-11
申请号：US11527762
申请日：2006-09-26
IPC分类号： A61B5/1455
CPC分类号： A61B5/6826 , A61B5/14552 , A61B5/6838 , A61B2562/164
摘要： A medical sensor may be adapted to prevent unwanted light and electrical interference from corrupting physiological measurements. Sensors are provided with features that reduce the amount of outside light or shunted light that impinge the detecting elements of the sensor. The sensor is adapted to reduce crosstalk between electrical signals, increasing the accuracy of measurements. The sensor is also adapted to reduce the effect of outside light or shunted light on pulse oximetry measurements.
摘要翻译： 医疗传感器可以适于防止不必要的光和电干扰破坏生理测量。 传感器具有减少撞击传感器检测元件的外部光线或分流光量的特征。 该传感器适用于减少电信号之间的串扰，从而提高测量的准确性。 该传感器还适用于减少外部光线或分流光线对脉搏血氧饱和度测量的影响。
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公开(公告)号：US07215985B2
公开(公告)日：2007-05-08
申请号：US10787541
申请日：2004-02-25
申请人： Ethan Petersen , Bradford B. Chew , William Shea
发明人： Ethan Petersen , Bradford B. Chew , William Shea
IPC分类号： A61B5/00
CPC分类号： A61B5/14551 , A61B5/7203 , A61B5/725
摘要： A method and apparatus for reducing cross-talk in an oximeter. The oximeter includes a band pass filter. The amount of cross-talk through the band pass filter is estimated. Based on this estimate, the corner frequencies of the band pass filter are adjusted when it is designed to minimize the cross-talk. In one embodiment, a calibration mode is performed when a sensor is attached to the oximeter. In the calibration mode, the signals are measured with first only the red LED on and then with only the IR LED on. Any signal measured in the off channel is assumed to be a result of cross-talk from the other channel. The magnitude of the cross-talk is determined as a percentage, and subsequently the percentage is multiplied by the actual signal and subtracted from the other LED signal as cross-talk compensation.
摘要翻译： 一种减少血氧计中串扰的方法和装置。 血氧计包括带通滤波器。 估计通过带通滤波器的串扰量。 基于这个估计，当设计带通滤波器的转角频率被设计成使串扰减至最小时。 在一个实施例中，当传感器附接到血氧计时执行校准模式。 在校准模式下，首先测量信号，只有红色LED亮起，然后只有红外LED亮起。 假设在关闭通道中测量的任何信号都是来自另一个通道的串扰结果。 串扰幅度被确定为一个百分比，随后百分比乘以实际信号，并从另一个LED信号中减去作为串扰补偿。
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9.发明授权Delta-sigma modulator for outputting analog representation of physiological signal 有权用于输出生理信号的模拟表示的Δ-Σ调制器公开(公告)号：US07212847B2
公开(公告)日：2007-05-01
申请号：US10787853
申请日：2004-02-25
申请人： Ethan Petersen , William Shea , Bradford B. Chew
发明人： Ethan Petersen , William Shea , Bradford B. Chew
IPC分类号： A61B5/00
CPC分类号： A61B5/14551 , H03M7/3028 , H03M7/3042
摘要： A method and apparatus for providing a substantially real-time representation of an analog representation of a physiological signal is provided. The waveform signal from the sensor is converted into digital form. A delta-sigma modulator is used as a simple Digital-to-analog Converter (DAC). The output can then be provided through a simple hardware filter to give an analog output signal in nearly real-time, which can be used for other instruments, synchronization, display, etc.
摘要翻译： 提供了一种用于提供生理信号的模拟表示的基本上实时表示的方法和装置。 传感器的波形信号转换为数字形式。 Δ-Σ调制器用作简单的数模转换器（DAC）。 然后可以通过简单的硬件滤波器提供输出，几乎实时提供模拟输出信号，可用于其他仪器，同步，显示等。
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公开(公告)号：US07190985B2
公开(公告)日：2007-03-13
申请号：US10787854
申请日：2004-02-25
申请人： Ethan Petersen , William Shea , Bradford B. Chew
发明人： Ethan Petersen , William Shea , Bradford B. Chew
IPC分类号： A61B5/00
CPC分类号： A61B5/14552 , A61B5/0205 , A61B5/02416 , A61B5/14551 , A61B5/7203 , A61B5/7225 , A61B5/7228 , A61B5/725 , A61B5/7278
摘要： A pulse oximeter method and apparatus which provides (1) a notch filter at a distance between a modulation frequency and a common multiple of commonly used power line frequencies (50, 60, 100 and 120) and also (2) a demodulation frequency greater than a highest pulse rate of a person and lower than any harmonic of 50, 60, 100 or 120 Hz, to filter ambient light interference, while choosing an optimum demodulation frequency that avoids interference from the notch filter or from harmonics of the line interference. Also, ambient light for any low frequency interference, such as power line interference, is measured both before and after each of the light emitter wavelengths and the average of the ambient light is then subtracted from the detected signal.
摘要翻译： 一种脉冲血氧计方法和装置，其提供（1）陷波滤波器，其在调制频率和共同使用的电力线频率（50,60,100和120）的公倍数之间的距离处，以及（2）大于 一个人的最高脉冲频率，低于50,60,100或120Hz的任何谐波，以过滤环境光干扰，同时选择避免陷波滤波器干扰或线路干扰谐波的最佳解调频率。 此外，在每个发光体波长之前和之后都测量任何低频干扰（例如电力线干扰）的环境光，然后从检测到的信号中减去环境光的平均值。
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