公开(公告)号：US20100165290A1

公开(公告)日：2010-07-01

申请号：US12643945

申请日：2009-12-21

Applicant: William Shea

Inventor： William Shea

IPC: A61B3/10 ,  G01B9/02 ,  G06F3/048

CPC classification number: A61B3/1015 ,  A61B3/0025 ,  A61B3/0041 ,  A61B3/0091 ,  A61B3/036 ,  A61B3/10 ,  A61B3/103 ,  A61B3/1035 ,  A61B3/13 ,  A61B3/14 ,  A61B5/7415 ,  A61B90/20 ,  G01J9/00 ,  G01J2003/064

Abstract: One embodiment of the present invention is a method to not limit the device's manipulation of the data to that of the manufacturer, but to allow greater freedom for customization by the individual user for their preference.

Abstract translation: 本发明的一个实施例是一种不限制设备对制造商的数据操纵的方法，而是允许个人用户为自己的偏好而更大的自定义度。

公开(公告)号：US20100118270A1

公开(公告)日：2010-05-13

申请号：US12606993

申请日：2009-10-27

Applicant: William Shea ,  Yeou-Yen Cheng ,  Shelly Reed ,  Willem Crone ,  Barry Linder ,  Phillip Baker ,  Yan Zhou

Inventor： William Shea ,  Yeou-Yen Cheng ,  Shelly Reed ,  Willem Crone ,  Barry Linder ,  Phillip Baker ,  Yan Zhou

IPC: A61B3/117

CPC classification number: A61B3/117

Abstract: An apparatus and method is disclosed that provides a means for mounting a separate optical element, such as a gonio lens, to a hand-held eye imaging device. In this way, the doctor only needs to use one hand to hold the imaging apparatus while the other hand can be freed to open the patient eye lid and also maintain a safe relative distance of the gonio lens with respect to the patient's eye. The gonio lens and adaptor can each or both be made disposable and also mechanically switchable relative to each other as well as relative to the handheld eye imaging device so that different portions of the patient eye can be imaged sequentially without the need to rotate the hand held eye imaging device.

Abstract translation: 公开了一种设备和方法，其提供用于将单独的光学元件（例如gonio透镜）安装到手持式眼睛成像装置的装置。 以这种方式，医生只需要用一只手来保持成像装置，另一只手可以被释放以打开患者眼罩，并且还保持角膜透镜相对于患者眼睛的安全的相对距离。 角膜透镜和适配器可以各自或两者都被制成一次性的并且也可以相对于彼此以及相对于手持式眼睛成像装置机械地切换，使得患者眼睛的不同部分可以顺序成像，而不需要旋转手持 眼睛成像装置。

公开(公告)号：US07499740B2

公开(公告)日：2009-03-03

申请号：US11650861

申请日：2007-01-08

Applicant: Brad Nordstrom ,  William Shea ,  Ethan Petersen

Inventor： Brad Nordstrom ,  William Shea ,  Ethan Petersen

IPC: A61B5/1455

CPC classification number: A61B5/14551 ,  A61B5/02416 ,  A61B5/7207 ,  A61B5/7239 ,  A61B2560/0209

Abstract: Low power techniques for sensing cardiac pulses in a signal from a sensor are provided. A pulse detection block senses the sensor signal and determines its signal-to-noise ratio. After comparing the signal-to-noise ratio to a threshold, the drive current of light emitting elements in the sensor is dynamically adjusted to reduce power consumption while maintaining the signal-to-noise ratio at an adequate level. The signal component of the sensor signal can be measured by identifying systolic transitions. The systolic transitions are detected using a maximum and minimum derivative averaging scheme. The moving minimum and the moving maximum are compared to the scaled sum of the moving minimum and moving maximum to identify the systolic transitions. Once the signal component has been identified, the signal component is compared to a noise component to calculate the signal-to-noise ratio.

Abstract translation: 提供了用于感测来自传感器的信号中的心脏脉冲的低功率技术。 脉冲检测块检测传感器信号并确定其信噪比。 在将信噪比与阈值进行比较之后，动态地调节传感器中的发光元件的驱动电流以降低功耗，同时将信噪比保持在适当的水平。 可以通过识别收缩转变来测量传感器信号的信号分量。 使用最大和最小导数平均方案检测心脏收缩转变。 将移动最小值和移动最大值与移动最小值和移动最大值的缩放和进行比较，以识别收缩转换。 一旦识别出信号分量，就将信号分量与噪声分量进行比较，以计算信噪比。

公开(公告)号：US07215985B2

公开(公告)日：2007-05-08

申请号：US10787541

申请日：2004-02-25

Applicant: Ethan Petersen ,  Bradford B. Chew ,  William Shea

Inventor： Ethan Petersen ,  Bradford B. Chew ,  William Shea

IPC: A61B5/00

CPC classification number: A61B5/14551 ,  A61B5/7203 ,  A61B5/725

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07212847B2

公开(公告)日：2007-05-01

申请号：US10787853

申请日：2004-02-25

Applicant: Ethan Petersen ,  William Shea ,  Bradford B. Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford B. Chew

IPC: A61B5/00

CPC classification number: A61B5/14551 ,  H03M7/3028 ,  H03M7/3042

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07190985B2

公开(公告)日：2007-03-13

申请号：US10787854

申请日：2004-02-25

Applicant: Ethan Petersen ,  William Shea ,  Bradford B. Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford B. Chew

IPC: A61B5/00

CPC classification number: A61B5/14552 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/14551 ,  A61B5/7203 ,  A61B5/7225 ,  A61B5/7228 ,  A61B5/725 ,  A61B5/7278

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07142142B2

公开(公告)日：2006-11-28

申请号：US10787542

申请日：2004-02-25

Applicant: Ethan Petersen ,  William Shea ,  Bradford B. Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford B. Chew

IPC: H03M3/00

CPC classification number: A61B5/14551 ,  A61B5/7228 ,  H03M3/424 ,  H03M3/456 ,  H03M3/464

Abstract: An oximeter uses a sigma-delta modulator and a multi-bit ADC with PWM feedback enabling high precision multi-bit conversion. Demodulation is done in software, thus requiring only a single hardware path for both red and IR. Multiple capacitors are switched into the integrator in the sigma-delta modulator, with different capacitors for red, IR and dark signals, thus enabling the use of the single hardware path. A switching circuit at the input of the sigma-delta modulator acts as a sample and hold, controlled by the PWM feedback.

Abstract translation: 血氧计使用Σ-Δ调制器和具有PWM反馈的多位ADC，实现高精度多位转换。 解调是在软件中完成的，因此只需要一个红色和红外的硬件路径。 多个电容器被切换到Σ-Δ调制器中的积分器，具有用于红色，红外和暗信号的不同电容器，从而能够使用单个硬件路径。 Σ-Δ调制器输入端的开关电路用作采样和保持，由PWM反馈控制。

公开(公告)号：US20050187452A1

公开(公告)日：2005-08-25

申请号：US10787541

申请日：2004-02-25

Applicant: Ethan Petersen ,  Bradford Chew ,  William Shea

Inventor： Ethan Petersen ,  Bradford Chew ,  William Shea

IPC: A61B5/00

CPC classification number: A61B5/14551 ,  A61B5/7203 ,  A61B5/725

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20050187448A1

公开(公告)日：2005-08-25

申请号：US10787854

申请日：2004-02-25

Applicant: Ethan Petersen ,  William Shea ,  Bradford Chew

Inventor： Ethan Petersen ,  William Shea ,  Bradford Chew

IPC: A61B5/00 ,  A61B5/024

CPC classification number: A61B5/14552 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/14551 ,  A61B5/7203 ,  A61B5/7225 ,  A61B5/7228 ,  A61B5/725 ,  A61B5/7278

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20050187447A1

公开(公告)日：2005-08-25

申请号：US10787852

申请日：2004-02-25

Applicant: Bradford Chew ,  Ethan Petersen ,  William Shea

Inventor： Bradford Chew ,  Ethan Petersen ,  William Shea

IPC: A61B5/00

CPC classification number: A61B5/14551

Abstract: A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the same inductor. Subsequently, the capacitors are alternately discharged for their corresponding light emitters through the same inductor. Also, the magnetic susceptibility of the LED drive circuit is reduced by using magnetic flux canceling in the inductor. In one embodiment, a toroidal inductor is used with geometric symmetry and its magnetic flux. In another embodiment, a dual core closed bobbin shielded inductor is used.

Abstract translation: 一种用于血氧计的光发射器驱动电路，其利用单个电感器来驱动多个发光体。 电感器连接到开关电路到多个储能电路，如电容器。 这些交替电荷使用相同的电感。 随后，电容器通过相同的电感器交替地对其相应的发光体放电。 此外，通过在电感器中使用磁通量消除来减少LED驱动电路的磁化率。 在一个实施例中，使用具有几何对称性及其磁通量的环形电感器。 在另一个实施例中，使用双核闭合筒管屏蔽电感器。