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公开(公告)号：FI946163A0
公开(公告)日：1994-12-29
申请号：FI946163
申请日：1994-12-29
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S , TRUDEL GREGORY J
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公开(公告)号：FI941787A
公开(公告)日：1994-10-20
申请号：FI941787
申请日：1994-04-18
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S , PATERSON WILLIAM G
Abstract: A circuit, for monitoring and controlling parameters of an electrosurgical unit, ESU, relative to load and the RF energy, has a load responsive output sensing circuit that measures the ESU load. A signal modifier, attached to the sensing circuit enhances the signals measured and transmits them to a buffer. An analog to digital converter, A/D, digitize the signals and samples wave pulse train at about eight million samples per second. A data memory stores the digitized signals. A RF drive clock connects to the ESU output; a sample clock uses phase shifting to interrogate the input signals to a processor, DSP, at a greater sampling rate of frequency than without. The DSP receives the stored signals from the data memory and processes them while monitoring and calculating ESU parameters measured, i.e. voltage, current, power, load impedance, leakage current, peak to peak voltage, peak to peak current, spectral content and/or crest factor of the RF wave pulse train energy to use as controlling feedback to the either a high voltage power supply in the ESU, regulating the RF drive pulses or both. A method monitors and controls the ESU relative to load has the steps of collecting parameters with the ESU output sensing circuit responsive to loads; enhancing signals with the signal modifier; transmitting signals to the buffer; converting signals with the A/D converter; storing signals in the data memory; receiving signals in the DSP, and processing, monitoring and controlling signals by repeatedly measuring ESU output parameters.
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Patent Agency Ranking
公开(公告)号：NO943627D0
公开(公告)日：1994-09-29
申请号：NO943627
申请日：1994-09-29
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S
Abstract: An electrosurgical bipolar treating apparatus comprising a handpiece to which is connected a first active electrode and a second return electrode having exposed distal ends which define a bipolar tip for electrosurgically treating tissue at an operational site on a patient, which tip is structured so that both distal ends simultaneously contact said tissue and wherein the active electrode has a higher tissue to electrode impedance than the return electrode.
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公开(公告)号：FI944522A0
公开(公告)日：1994-09-29
申请号：FI944522
申请日：1994-09-29
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S
Abstract: An electrosurgical bipolar treating apparatus comprising a handpiece to which is connected a first active electrode and a second return electrode having exposed distal ends which define a bipolar tip for electrosurgically treating tissue at an operational site on a patient, which tip is structured so that both distal ends simultaneously contact said tissue and wherein the active electrode has a higher tissue to electrode impedance than the return electrode.
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65.发明专利
公开(公告)号：CA2150487A1
公开(公告)日：1994-06-09
申请号：CA2150487
申请日：1993-09-17
Applicant: VALLEYLAB INC
Inventor： OLICHNEY MICHAEL D , KLICEK MICHAEL S , ROSE EMERY S , BROADWIN ALAN , KREIZMAN ALEXANDER S
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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公开(公告)号：AU1914792A
公开(公告)日：1993-01-08
申请号：AU1914792
申请日：1992-05-04
Applicant: VALLEYLAB INC , KLICEK MICHAEL S , ZIEVE DAVID A
Inventor： KLICEK MICHAEL S , ZIEVE DAVID A
Abstract: An electrical circuit system which provides electrical energy to a surgical apparatus having ultrasonic fragmentation, aspiration and electrosurgical coagulation capabilities, which system also includes an impedance sensing network and automatic feedback power output control to reduce RF power output as load impedance increases, thereby reducing RF leakage current.
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公开(公告)号：CA1267438A
公开(公告)日：1990-04-03
申请号：CA502333
申请日：1986-02-20
Applicant: VALLEYLAB INC
Inventor： KLICEK MICHAEL S
Abstract: An electrosurgical generator comprises a patient circuit which includes an active electrode and a return electrode. The generator generates a pulse train and includes an MXN storage device 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 circuit which is response to the K-bit binary signal generates an electrosurgical signal which is applied to the patient circuit.
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