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    • 2. 发明申请
    • POWER DRIVING CIRCUIT FOR CONTROLLING A VARIABLE LOAD ULTRASONIC TRANSDUCER
    • 用于控制可变负载超声波传感器的动力驱动电路
    • WO2006093602A2
    • 2006-09-08
    • PCT/US2006002911
    • 2006-01-27
    • SULPHCO INCMAY JASONRICHMAN CHARLES IGUNNERMAN RUDOLF W
    • MAY JASONRICHMAN CHARLES IGUNNERMAN RUDOLF W
    • B06B1/0246B06B2201/58B06B2201/70
    • The present invention is directed to a high-powered (e.g., > 500 W) ultrasonic generator for use especially for delivering high-power ultrasonic energy to a varying load including compressible fluids. The generator includes a variable frequency triangular waveform generator coupled with pulse width modulators. The output from the pulse width modulator is coupled with the gates of an Isolated Gate Bipolar Transistor (IGBT), which amplifies the signal and delivers it to a coil that is used to drive a magnetostrictive transducer. In one embodiment, high voltage of 0-600VDC is delivered across the collector and emitter of the IGBT after the signal is delivered. The output of the IGBT is a square waveform with a voltage of +/- 600V. This voltage is sent to a coil wound around the ultrasonic transducer. The voltage creates a magnetic field on the transducer and the magnetorestrictive properties of the transducer cause the transducer to vibrate as a result of the magnetic field. The use of the IGBT as the amplifying device obviates the need for a Silicon Controlled Rectifier (SCR) circuit, which is typically used in low powered ultrasonic transducers, and which would get overheated and fail in such a high-powered and load-varying application.
    • 本发明涉及一种用于特别用于将大功率超声能量递送到包括可压缩流体的变化载荷的大功率(例如> 500W)超声发生器。 发生器包括与脉宽调制器耦合的可变频三角波形发生器。 脉冲宽度调制器的输出与隔离栅双极晶体管(IGBT)的栅极耦合,隔离栅极双极晶体管(IGBT)放大信号并将其传送到用于驱动磁致伸缩换能器的线圈。 在一个实施例中,在信号传送之后,跨越IGBT的集电极和发射极输出0-600VDC的高电压。 IGBT的输出是+/- 600V电压的方波。 该电压被发送到围绕超声换能器缠绕的线圈。 电压在换能器上产生磁场,并且传感器的磁致伸缩特性导致换能器由于磁场而振动。 使用IGBT作为放大器件消除了对通常用于低功率超声换能器中的硅控制整流器(SCR)电路的需要,并且在这种大功率和负载变化的应用中将会过热和失效 。
    • 6. 发明申请
    • INSTRUMENT FOR REDUCTION OF A VERTEBRAL ROD AND METHOD OF USE
    • 用于减少VERTEBRAL ROD的仪器及其使用方法
    • WO2012103344A2
    • 2012-08-02
    • PCT/US2012/022740
    • 2012-01-26
    • WARSAW ORTHOPEDIC, INC.JOSSE, LoIcMAY, Jason MPEULTIER, Bertrand
    • JOSSE, LoIcMAY, Jason MPEULTIER, Bertrand
    • A61B17/70A61B17/84A61B17/86
    • A61B17/7086
    • An instrument and method for reducing a vertebral rod into an anchor attached to a vertebral member. The instrument may include a gripper configured to attach to an anchor, an elongated shaft extending along a longitudinal axis between opposing jaws of the gripper, and a reducing element disposed at least partially outside the first and second jaws of the gripper and configured to engage with the vertebral rod. A release device may also be disposed about the elongated shaft and may be movable relative thereto such that the release device may be selectively engaged with a threaded outer surface of the elongated shaft. The reducing element may therefore be alternatively slidable relative to the gripper or threadably movable relative to the gripper by interaction with the elongated shaft, depending on a position of the release device.
    • 一种用于将椎骨杆减小成连接到椎骨构件的锚固件的仪器和方法。 仪器可以包括构造成附接到锚固件的夹持器,沿着纵向轴线延伸在夹持器的相对的夹爪之间的细长轴以及至少部分地设置在夹持器的第一和第二爪的外部的还原元件,并且被配置成与 脊椎杆。 释放装置也可以围绕细长轴设置并且可以相对于其移动,使得释放装置可以选择性地与细长轴的螺纹外表面接合。 因此,根据释放装置的位置,还原元件可以相对于夹持器可替代地滑动,或者通过与细长轴的相互作用相对于夹具可螺纹移动。