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    2.
    发明专利
    未知

    公开(公告)号：DE3852005D1

    公开(公告)日：1994-12-08

    申请号：DE3852005

    申请日：1988-09-30

    Applicant: VALLEYLAB INC

    Inventor： BROADWIN ALAN ,  VASSALLO CHARLES ,  LOGAN JOSEPH N ,  HORNLEIN ROBERT W

    IPC: A61B17/00 ,  A61B17/22 ,  A61B17/32 ,  A61B18/00 ,  A61B18/12 ,  A61B18/14 ,  A61M1/00 ,  A61B17/39

    Abstract: An apparatus having a vibratable tip (22) for ultrasonically disintegrating tissue in a surgical procedure and for aspirating the disintegrated tissue and fluid away from the surgical site (12) through an opening (24) in the tip. A connection (42) to the electrosurgical unit provides for delivery of RF cutting current, RF coagulating current or a blend thereof to the tip so that electrosurgical procedures can be conducted separately or simultaneously with ultrasonic aspiration through the tip. It thus is now possible, for example, to electrocauterize simultaneously with ultrasonic fragmentation with a single handheld surgical device. The simultaneous delivery of ultrasonic vibrations and RF current to the tip also has been found to increase the tissue fragementation rate.

    3.
    发明专利
    未知

    公开(公告)号：ES2055988T3

    公开(公告)日：1994-09-01

    申请号：ES91908076

    申请日：1991-03-27

    Applicant: VALLEYLAB INC

    Inventor： BROADWIN ALAN ,  LOGAN JOSEPH NICHOLAS ,  KUHL PETER JOSEPH

    IPC: A61B20060101 ,  A61B17/00 ,  A61B17/22 ,  A61B18/00 ,  A61B18/12 ,  A61B18/14

    Abstract: An improved device for delivering RF current to the operating tool of an ultrasonic surgical apparatus which comprises a switch module for selecting said RF current, an electrically conducting metal band connected to the switch module and an electrically conductive O-ring in electrical contact with the metal band and located around the acoustic conecting member of the apparatus.

    4.
    发明专利
    未知

    公开(公告)号：DK0523174T3

    公开(公告)日：1994-08-22

    申请号：DK91908076

    申请日：1991-03-27

    Applicant: VALLEYLAB INC

    Inventor： BROADWIN ALAN ,  LOGAN JOSEPH NICHOLAS ,  KUHL PETER JOSEPH

    IPC: A61B20060101 ,  A61B17/22 ,  A61B17/00 ,  A61B18/00 ,  A61B18/12 ,  A61B18/14

    Abstract: An improved device for delivering RF current to the operating tool of an ultrasonic surgical apparatus which comprises a switch module for selecting said RF current, an electrically conducting metal band connected to the switch module and an electrically conductive O-ring in electrical contact with the metal band and located around the acoustic conecting member of the apparatus.

    An ultrasonic surgical handpiece and an energy initiator to maintain the vibration and linear dynamics
    10.
    发明专利
    An ultrasonic surgical handpiece and an energy initiator to maintain the vibration and linear dynamics 未知

    公开(公告)号：AU6078896A

    公开(公告)日：1996-10-24

    申请号：AU6078896

    申请日：1996-07-29

    Applicant: VALLEYLAB INC

    Inventor： BROADWIN ALAN ,  KLICEK MICHAEL STEVE ,  KREIZMAN ALEXANDER S ,  OLICHNEY MICHAEL D ,  ROSE EMERY STEPHEN

    IPC: A61B17/22 ,  A61B17/00 ,  A61B17/32 ,  A61B18/00 ,  A61B18/12 ,  B06B1/02

    Abstract: An ultrasonic oscillator drives a tool at a set frequency. An amplitude control runs the oscillator to set the vibration level. A frequency regulator joins the amplitude and the oscillator. A control feedback loop, in the frequency regulator, keeps handpiece linear dynamics. An operational transconductance amplifier, in the oscillator, governs gain of the loop. A circuit connects to the control to retard the rate of current application over time to the amplifier. The circuit has switching to either retard the rate or reset for start up. The amplifier is a current output device with current directly proportional to the bias current and input voltage with bias as gain change for the loop. The circuit limits the bias to the amplifier to modify frequency response and output current. A capacitor delays application of the bias to the amplifier. Replaceable tools of various lengths or shapes positioned along an axis vibrate for surgery at the frequency and a wave length. Tools longer than one wavelength and of configurations tuned to oscillate around the frequency resonate as a function of their material, length and configuration. A flue surrounds the tool and has a hollow elongate semi rigid central body about an axis with a funnel, at one end thereof and a nozzle, at the other to direct annular irrigant/coolant flow therethrough. The funnel and nozzle are resilient. Reinforcing ridges, inside the nozzle, act to maintain concentricity between the flue and nozzle tip and channel irrigant thereabout.

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