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1.发明公开Method for driving an ultrasonic transducer 失效Kontrollanordnung zum Kalibrieren和Antreiben eines Ultraschallwandlers。
公开(公告)号：EP0424685A2
公开(公告)日：1991-05-02
申请号：EP90118666.8
申请日：1990-09-28
Applicant: STORZ INSTRUMENT COMPANY
Inventor： Williams, Daniel L, Jr. , Kepley, Kevin P. , Painter, John A.
CPC classification number: B06B1/0253 , A61B2017/00725 , A61B2017/00973 , A61F9/00745 , B06B2201/40 , B06B2201/76
Abstract: An electronic control system for determining the resonant frequency of and driving ultrasonic transducers in a phacoemulsification probe used for ophthalmic surgery. The control system includes a voltage control led oscillator, power amplifier, power monitor, and automatic gain control circuit operating under the direction of command signals received from a microprocessor-based control console. The control system operates in a constant apparent power, direct drive mode with closed loop feedback maintaining the electrical power provided to the primary of a RLC transformer at the constant level requested by the command signals from the console. The frequency of the drive signal is held at the dominant resonant frequency of the ultrasonic transducer which is being driven by the control system. This resonant frequency is determined via a calibration procedure performed when the probe is first attached to the control system. During this procedure a constant voltage drive signal is swept through a range of frequencies and the electrical power consumed by the transducer is measured and stored at selected intervals such as 100 Hertz increments. The resonant frequency is also determined in part by looking for the frequency at which maximum power is consumed by the probe. The stored data is also subjected to other tests to cheok that the peak is indeed a resonant frequency and that the probe has selected output power characteristics about this resonant frequency thus helping to ensure that the probe is capable of operating satisfactorily when driven by the control system.
Abstract translation: 一种用于确定用于眼科手术的晶状体乳化探针中的超声换能器的谐振频率和驱动超声换能器的电子控制系统。 该控制系统包括电压控制LED振荡器，功率放大器，功率监视器和自动增益控制电路，其工作方式是从基于微处理器的控制台接收到的命令信号。 控制系统以恒定的视在功率运行，具有闭环反馈的直接驱动模式，保持提供给来自控制台的命令信号所要求的恒定电平的RLC变压器的主电源。 驱动信号的频率保持在由控制系统驱动的超声换能器的主谐振频率上。 该谐振频率通过首先连接到控制系统时所执行的校准程序确定。 在此过程中，恒定电压驱动信号被扫过频率范围，并且以选定的间隔（例如100赫兹增量）测量和存储换能器消耗的电功率。 谐振频率也通过寻找探头消耗最大功率的频率来部分确定。 存储的数据也经受其他测试，以确定峰值确实是谐振频率，并且探头已经选择了关于该谐振频率的输出功率特性，从而有助于确保探头能够在由控制系统驱动时令人满意地运行 。
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公开(公告)号：EP0424685A3
公开(公告)日：1992-02-26
申请号：EP90118666.8
申请日：1990-09-28
Applicant: STORZ INSTRUMENT COMPANY
Inventor： Williams, Daniel L, Jr. , Kepley, Kevin P. , Painter, John A.
CPC classification number: B06B1/0253 , A61B2017/00725 , A61B2017/00973 , A61F9/00745 , B06B2201/40 , B06B2201/76
Abstract: An electronic control system for determining the resonant frequency of and driving ultrasonic transducers in a phacoemulsification probe used for ophthalmic surgery. The control system includes a voltage control led oscillator, power amplifier, power monitor, and automatic gain control circuit operating under the direction of command signals received from a microprocessor-based control console. The control system operates in a constant apparent power, direct drive mode with closed loop feedback maintaining the electrical power provided to the primary of a RLC transformer at the constant level requested by the command signals from the console. The frequency of the drive signal is held at the dominant resonant frequency of the ultrasonic transducer which is being driven by the control system. This resonant frequency is determined via a calibration procedure performed when the probe is first attached to the control system. During this procedure a constant voltage drive signal is swept through a range of frequencies and the electrical power consumed by the transducer is measured and stored at selected intervals such as 100 Hertz increments. The resonant frequency is also determined in part by looking for the frequency at which maximum power is consumed by the probe. The stored data is also subjected to other tests to cheok that the peak is indeed a resonant frequency and that the probe has selected output power characteristics about this resonant frequency thus helping to ensure that the probe is capable of operating satisfactorily when driven by the control system.
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3.发明公开Control system for ophthalmic surgical instruments 失效Kontrollsystemfüraugenchirurgische Instrumente。
公开(公告)号：EP0424686A1
公开(公告)日：1991-05-02
申请号：EP90118667.6
申请日：1990-09-28
Applicant: STORZ INSTRUMENT COMPANY
Inventor： Appelbaum, Peter F. , Ameiss, Michael S. , McFerran, Stanley C. , Painter, John A.
Abstract: A microprocessor-based electronic control system for controlling microsurgical instruments includes a display screen (50) and a plurality of operator input switches (52) which support various enhanced user-friendly functions. The operator interface provides special utility display screens for allowing a user to change various default settings for operating parameters, the screen seen upon power up mode, and the language set used for the screens. The control system includes a main control console, and a processor which is programmed to display a variety of screens in a predetermined sequence or tree structure to facilitate user changes to the system. The control system also includes set-up screens for adjusting monitoring and warning sounds in tone and volume. Also, the control system provides a user-selectable rate of change in aspiration levels to permit users to obtain a speed of response in aspiration which they are accustomed or most comfortable with.
Abstract translation: 用于控制显微外科器械的基于微处理器的电子控制系统包括支持各种增强的用户友好功能的显示屏（50）和多个操作者输入开关（52）。 操作员界面提供特殊的实用程序显示屏幕，用于允许用户更改操作参数的各种默认设置，上电模式下看到的屏幕以及用于屏幕的语言设置。 控制系统包括主控制台和处理器，其被编程为以预定的顺序或树结构显示各种屏幕以便于用户对系统的改变。 控制系统还包括用于调节音调和音量的监视和警告声音的设置屏幕。 此外，控制系统提供用户可选择的抽吸水平的变化率，以允许用户获得他们习惯或最舒适的愿望的响应速度。
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公开(公告)号：EP0424685B1
公开(公告)日：1995-05-10
申请号：EP90118666.8
申请日：1990-09-28
Applicant: STORZ INSTRUMENT COMPANY
Inventor： Williams, Daniel L, Jr. , Kepley, Kevin P. , Painter, John A.
CPC classification number: B06B1/0253 , A61B2017/00725 , A61B2017/00973 , A61F9/00745 , B06B2201/40 , B06B2201/76
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