公开(公告)号：US6134329A

公开(公告)日：2000-10-17

申请号：US926320

申请日：1997-09-05

申请人： Shawn X. Gao ,  Sigfrid D. Soli

发明人： Shawn X. Gao ,  Sigfrid D. Soli

IPC分类号： H04R25/00 ,  H04R29/00

CPC分类号： H04R25/453 ,  H04R25/70

摘要： A "true" hearing aid transfer function, including feedback, is derived from measurements taken with the hearing aid fitted in a patient's ear canal. Closed loop transfer functions are calculated at several hearing aid gains without opening the internal circuitry of the hearing aid using a time domain Weiner optimal filter model. The combined open loop transfer function of the hearing aid and feedback path is then calculated. Once the open loop transfer function is known, potentially unstable frequencies are identified and maximum hearing aid gain settings are determined. The hearing aid transfer function and transfer function of feedback path are also calculated from the closed loop transfer function measurements.

摘要翻译： 包括反馈在内的“真实”助听器传递功能来源于使用安装在患者耳道中的助听器进行的测量。 闭环传递函数以几种助听器增益计算，而不使用时域维纳最优滤波器模型打开助听器的内部电路。 然后计算助听器和反馈路径的组合开环传递函数。 一旦已知开环传递函数，就会识别潜在的不稳定频率，并确定最大助听器增益设置。 反馈路径的助听器传递函数和传递函数也由闭环传递函数测量得出。

公开(公告)号：US20080066542A1

公开(公告)日：2008-03-20

申请号：US11477032

申请日：2006-06-28

申请人： Shawn X. Gao

发明人： Shawn X. Gao

IPC分类号： G01F23/00

CPC分类号： G01F23/2927 ,  A61B50/10 ,  A61B50/13 ,  G01F23/292

摘要： Embodiments of the present invention provide a system and method for detecting the level of a fluid in a surgical cassette by projecting light from a linear light source into a wall of a cassette. Depending on the amount a light reflected or refracted in the cassette (i.e., due to the cassette material/fluid interface or cassette material/air interface (or other interface)) various portions of a linear sensor array will be more or less illuminated. By examining the illumination of the linear sensor array, the level of fluid in the chamber can be determined.

摘要翻译： 本发明的实施例提供了一种用于通过将来自线性光源的光投射到盒的壁中来检测手术盒中的流体的水平的系统和方法。 取决于在盒中反射或折射的光量（即，由于盒材料/流体界面或盒材料/空气界面（或其它界面））的光线的数量将被或多或少地被照亮。 通过检查线性传感器阵列的照明，可以确定腔室中的流体水平。

公开(公告)号：US07292699B2

公开(公告)日：2007-11-06

申请号：US11089399

申请日：2005-03-23

申请人： Shawn X. Gao ,  Sigfrid D. Soli ,  Hsiang-Feg Chi

发明人： Shawn X. Gao ,  Sigfrid D. Soli ,  Hsiang-Feg Chi

IPC分类号： H04R25/00

CPC分类号： H04R25/453 ,  H03H21/0012 ,  H03H2021/0078 ,  H04R25/505 ,  H04R2430/03

摘要： An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellation signal, the distortion due to the adaptive filter is minimized and limited only to the unstable feedback regions. A relatively simple signal processing algorithm is used to produce highly effective results with minimal signal distortion.

摘要翻译： 一种用于自适应地消除助听器和其他音频放大装置中的声反馈的改进方法。 反馈消除限于包含所有不稳定频率的频带。 通过限制反馈消除信号的带宽，由于自适应滤波器引起的失真被最小化并且仅限于不稳定的反馈区域。 使用相对简单的信号处理算法来产生具有最小信号失真的高效结果。

公开(公告)号：US06980662B1

公开(公告)日：2005-12-27

申请号：US09972407

申请日：2001-10-05

申请人： Shawn X. Gao ,  Daniel J. Freed

发明人： Shawn X. Gao ,  Daniel J. Freed

IPC分类号： A61B5/12 ,  H04R25/00 ,  H04R29/00

CPC分类号： H04R25/70 ,  A61B5/121 ,  H04R29/001

摘要： A hearing test device is capable of presenting a variety of acoustical or vibratory stimuli and can be easily calibrated. Transfer functions for the device are calculated at two different attenuation levels to derive the characteristic impedance and sensitivity of the acoustic or vibratory transducer. The predicted sound pressure level emitted by the transducer may then be calculated as a function of input signal and attenuation.

摘要翻译： 听力测试装置能够呈现各种声学或振动刺激，并且可以容易地校准。 在两个不同的衰减水平上计算器件的传递函数，以导出声学或振动传感器的特性阻抗和灵敏度。 然后可以根据输入信号和衰减来计算由换能器发射的预测声压级。

公开(公告)号：US20140081224A1

公开(公告)日：2014-03-20

申请号：US13621571

申请日：2012-09-17

申请人： Shawn X. Gao ,  Roderick S. Van

发明人： Shawn X. Gao ,  Roderick S. Van

IPC分类号： A61M27/00

CPC分类号： A61F9/00736 ,  A61M1/0058 ,  A61M2205/123 ,  A61M2205/3306 ,  A61M2205/3389 ,  A61M2210/0612

摘要： Embodiments of this disclosure provide an apparatus and method for gas and debris management. The apparatus comprises a surgical cassette, wherein the surgical cassette is at least partially formed of a cassette material defining a chamber. The surgical cassette has a floor and a plurality of walls. The apparatus also has a drain conduit with a drain entry and a drain exit. The drain entry is connected to the chamber near the floor. The drain conduit has a top portion and a bottom portion. The apparatus also has an aspiration conduit. The aspiration conduit has an aspiration port and an aspiration exit. The aspiration conduit is in liquid communication with the chamber and the drain conduit. At least a portion of the top portion of the drain conduit is positioned above at least a portion of the aspiration exit.

摘要翻译： 本公开的实施例提供了一种用于气体和碎屑管理的装置和方法。 该装置包括手术盒，其中手术盒至少部分地由限定腔室的盒材料形成。 手术盒具有地板和多个壁。 该设备还具有排水管道，排水入口和排水口。 排水入口连接到靠近地板的室。 排水管道具有顶部和底部。 该装置还具有抽吸管。 抽吸管道具有抽吸口和抽吸出口。 抽吸管道与腔室和排水管道液体连通。 排水管道顶部的至少一部分位于抽吸出口的至少一部分上方。

公开(公告)号：US08348879B2

公开(公告)日：2013-01-08

申请号：US11510903

申请日：2006-08-28

申请人： Shawn X. Gao ,  Nader Nazarifar ,  Cornelis J. Drost ,  Yuri M. Shkarlet

发明人： Shawn X. Gao ,  Nader Nazarifar ,  Cornelis J. Drost ,  Yuri M. Shkarlet

IPC分类号： A61N1/30 ,  G01F1/66

CPC分类号： A61M1/0023 ,  A61M1/0025 ,  A61M2205/12 ,  A61M2205/3375 ,  A61M2205/3379

摘要： A surgical cassette have a rigid fluid channel formed into a rigid plastic component or housing. The piezoelectric crystals of an ultrasonic flow meter are positioned on one side of the fluid channel. The side wall of the fluid channel opposite the piezoelectric crystals is exposed to fluid in the flow channel on its interior side and is exposed to ambient air on its exterior side. The interface between the wall and the air acts as an acoustic reflector for the operation of the ultrasonic flow meter.

摘要翻译： 手术盒具有形成为刚性塑料部件或壳体的刚性流体通道。 超声波流量计的压电晶体位于流体通道的一侧。 与压电晶体相对的流体通道的侧壁暴露于其内侧的流动通道中的流体，并在其外侧暴露于环境空气。 墙壁和空气之间的界面用作超声波流量计操作的声反射器。

公开(公告)号：US08079836B2

公开(公告)日：2011-12-20

申请号：US11365228

申请日：2006-03-01

申请人： Shawn X. Gao ,  David L. Williams

发明人： Shawn X. Gao ,  David L. Williams

IPC分类号： F04B43/12

CPC分类号： F04B43/14 ,  A61M1/0072 ,  A61M2205/12 ,  F04B43/0081 ,  F04B2201/1208

摘要： A method for operating a peristaltic pump having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The pump head rollers are mounted radially from the axis of rotation of the pump motor and compress the elastomeric flow channels against the rigid substrate. During reflux, the pump head is positioned so that at least one of the rollers compresses the elastomeric flow channel at the input end of the peristaltic pump. Such an operation minimizes the amount of the elastomeric sheet that is exposed to high transient pressures.

摘要翻译： 一种用于操作蠕动泵的方法，其具有包含在弹性体片材上的模制流动通道，所述弹性体片材结合或机械地附接到刚性基底。 泵头辊从泵马达的旋转轴线径向安装，并将弹性体流动通道压靠在刚性基底上。 在回流期间，泵头被定位成使得至少一个辊压缩在蠕动泵的输入端处的弹性体流动通道。 这样的操作使暴露于高瞬态压力的弹性体片材的量最小化。

公开(公告)号：US20110144675A1

公开(公告)日：2011-06-16

申请号：US12944039

申请日：2010-11-11

申请人： Shawn X. Gao ,  Mark Alan Hopkins

发明人： Shawn X. Gao ,  Mark Alan Hopkins

IPC分类号： A61F9/007

CPC分类号： A61F9/00736 ,  A61F2009/00874 ,  Y10T137/7761

摘要： In various embodiments, a pneumatic system valve for a surgical console may be controlled by a controller configured to adjust a valve duty cycle (VDC) of the valve to reduce a difference between the valve's differential pressure and a desired differential pressure. In some embodiments, average differential pressures may be detected and relayed from a pressure sensor, coupled to one or more ports of the valve, to the controller. The controller may compare the measured average differential pressure against the desired average differential pressure (e.g., received from the user). The controller may then determine a modified VDC to reduce a difference between the desired average differential pressure and the measured average differential pressure. In some embodiments, the desired average differential pressure may be determined based on input received from a user of the surgical console.

摘要翻译： 在各种实施例中，用于外科手术控制台的气动系统阀可以由构造成调节阀的阀占空比（VDC）的控制器控制，以减小阀的差压和期望的压差之间的差。 在一些实施例中，可以检测平均差压并从耦合到阀的一个或多个端口的压力传感器中继到控制器。 控制器可以将测得的平均差压与所需的平均差压（例如，从用户接收）进行比较。 然后，控制器可以确定改进的VDC以减小所需的平均差压和测得的平均压差之间的差。 在一些实施例中，可以基于从手术控制台的用户接收的输入来确定期望的平均差压。

公开(公告)号：US07956341B2

公开(公告)日：2011-06-07

申请号：US12760032

申请日：2010-04-14

申请人： Shawn X. Gao

发明人： Shawn X. Gao

IPC分类号： G01N15/06 ,  G01N21/49 ,  G01N21/85

CPC分类号： G01F23/2927 ,  A61B50/10 ,  A61B50/13 ,  G01F23/292

摘要： Embodiments of the present invention provide a system and method for detecting the level of a fluid in a surgical cassette by projecting light from a linear light source into a wall of a cassette. Depending on the amount a light reflected or refracted in the cassette (i.e., due to the cassette material/fluid interface or cassette material/air interface (or other interface)) various portions of a linear sensor array will be more or less illuminated. By examining the illumination of the linear sensor array, the level of fluid in the chamber can be determined.

摘要翻译： 本发明的实施例提供了一种用于通过将来自线性光源的光投射到盒的壁中来检测手术盒中的流体的水平的系统和方法。 取决于在盒中反射或折射的光量（即，由于盒材料/流体界面或盒材料/空气界面（或其它界面））的光线的数量将被或多或少地被照亮。 通过检查线性传感器阵列的照明，可以确定腔室中的流体水平。

公开(公告)号：US07786457B2

公开(公告)日：2010-08-31

申请号：US11477032

申请日：2006-06-28

申请人： Shawn X. Gao

发明人： Shawn X. Gao

IPC分类号： G01N15/06 ,  G01N21/49 ,  G01N21/85

CPC分类号： G01F23/2927 ,  A61B50/10 ,  A61B50/13 ,  G01F23/292

摘要： Embodiments of the present invention provide a system and method for detecting the level of a fluid in a surgical cassette by projecting light from a linear light source into a wall of a cassette. Depending on the amount a light reflected or refracted in the cassette (i.e., due to the cassette material/fluid interface or cassette material/air interface (or other interface)) various portions of a linear sensor array will be more or less illuminated. By examining the illumination of the linear sensor array, the level of fluid in the chamber can be determined.

摘要翻译： 本发明的实施例提供了一种用于通过将来自线性光源的光投射到盒的壁中来检测手术盒中的流体的水平的系统和方法。 取决于在盒中反射或折射的光量（即，由于盒材料/流体界面或盒材料/空气界面（或其它界面））的光线的数量将被或多或少地被照亮。 通过检查线性传感器阵列的照明，可以确定腔室中的流体水平。