GAS COAGULATION DEVICE
    1.
    发明专利

    公开(公告)号:AU624554B2

    公开(公告)日:1992-06-11

    申请号:AU7356391

    申请日:1991-03-14

    Applicant: VALLEYLAB INC

    Abstract: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode 2 with a distal end 2 min defining a tip for cutting or coagulating biological tissue, which device 10 comprises a nose piece adapted to be mounted about said electrode and containing conduit means defining converging pathways for streams of gas which impinge obliquely on said electrode at or near the tip thereof, and electrosurgical apparatus incorporating said device.

    GAS COAGULATION DEVICE
    2.
    发明专利

    公开(公告)号:AU7356391A

    公开(公告)日:1991-12-12

    申请号:AU7356391

    申请日:1991-03-14

    Applicant: VALLEYLAB INC

    Abstract: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode 2 with a distal end 2 min defining a tip for cutting or coagulating biological tissue, which device 10 comprises a nose piece adapted to be mounted about said electrode and containing conduit means defining converging pathways for streams of gas which impinge obliquely on said electrode at or near the tip thereof, and electrosurgical apparatus incorporating said device.

    3.
    发明专利
    未知

    公开(公告)号:FI911265A0

    公开(公告)日:1991-03-14

    申请号:FI911265

    申请日:1991-03-14

    Applicant: VALLEYLAB INC

    Abstract: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode 2 with a distal end 2 min defining a tip for cutting or coagulating biological tissue, which device 10 comprises a nose piece adapted to be mounted about said electrode and containing conduit means defining converging pathways for streams of gas which impinge obliquely on said electrode at or near the tip thereof, and electrosurgical apparatus incorporating said device.

    6.
    发明专利
    未知

    公开(公告)号:FI860772A

    公开(公告)日:1986-08-23

    申请号:FI860772

    申请日:1986-02-21

    Applicant: VALLEYLAB INC

    Abstract: An electrosurgical generator 10 comprises a patient circuit which includes an active electrode 12 and a return electrode 14. Means 16 of generator 10 generates a pulse train and includes an MXN storage device U 1 having M memory locations where M > 1 and each location having N storage positions where N ≥ 1. The storage device stores at least one K-bit binary signal which is sequentially put out from the storage device. An electrosurgical signal generating means which in response to the K-bit binary signal generates an electrosurgical signal which is applied to the patient circuit.

    7.
    发明专利
    未知

    公开(公告)号:DK0447121T3

    公开(公告)日:1998-02-16

    申请号:DK91301892

    申请日:1991-03-07

    Applicant: VALLEYLAB INC

    Abstract: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode 2 with a distal end 2 min defining a tip for cutting or coagulating biological tissue, which device 10 comprises a nose piece adapted to be mounted about said electrode and containing conduit means defining converging pathways for streams of gas which impinge obliquely on said electrode at or near the tip thereof, and electrosurgical apparatus incorporating said device.

    Gas coagulation device
    8.
    发明专利

    公开(公告)号:GR3024636T3

    公开(公告)日:1997-12-31

    申请号:GR970402274

    申请日:1997-09-04

    Applicant: VALLEYLAB INC

    Abstract: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode 2 with a distal end 2 min defining a tip for cutting or coagulating biological tissue, which device 10 comprises a nose piece adapted to be mounted about said electrode and containing conduit means defining converging pathways for streams of gas which impinge obliquely on said electrode at or near the tip thereof, and electrosurgical apparatus incorporating said device.

    An ultrasonic surgical handpiece and an energy initiator to maintain the vibration and linear dynamics

    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

    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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