公开(公告)号：AU5700996A

公开(公告)日：1996-12-24

申请号：AU5700996

申请日：1996-06-03

Applicant: VALLEYLAB INC

Inventor： KLICEK MICHAEL S ,  SODNICAR MATTHEW J

IPC: A61B18/12 ,  A61B17/39

公开(公告)号：AU5700796A

公开(公告)日：1996-12-24

申请号：AU5700796

申请日：1996-06-03

Applicant: VALLEYLAB INC

Inventor： BELL GREGORY J ,  KLICEK MICHAEL S ,  PATERSON WILLIAM G

IPC: A61B18/12 ,  A61B17/39

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.

公开(公告)号：DE9490479U1

公开(公告)日：1996-10-10

申请号：DE9490479

申请日：1994-11-03

Applicant: VALLEYLAB INC

IPC: G01R21/00 ,  A61B17/00 ,  A61B18/12 ,  G01R21/133 ,  G01R21/01 ,  A61B17/39 ,  H03L5/02

Abstract: A monitoring circuit for an electrosurgical generator has active and return output conductors. Voltage, current and the inverse of current picked up inductively are provided to a adder circuits for summing the picked up voltage and current and computing the difference of the picked up voltage and the current. Root mean square to direct current converters signal RMS average values of the sum and difference. A microprocessor squares the values and applies them to a formula wherein the sum signals have subtracted therefrom the difference signals; the results are divided by four to provide the root mean square of the power applied to the load. During desiccation the output is regulated in response to impedance to shut off output. A diagnostic circuit relates impedance load and output response during operation to a look up table or a microprocessor algorithm to calibrate. Feedback modifies the output when the adders determine the power applied to the load in real time. A method has generator output to active and return conductors and to inductive pick ups for voltage and current, computes sum and differential values, changes root mean square to direct currents, squares the values and subtracts the differential from the summation then divides the result finding the root mean square value of the power.

公开(公告)号：FI96824C

公开(公告)日：1996-09-10

申请号：FI896088

申请日：1989-12-19

Applicant: VALLEYLAB INC

Inventor： BROADWIN ALAN ,  EMERY LEONARD MEREDITH

IPC: A61B18/00 ,  A61F9/007 ,  B06B1/08 ,  H01L41/12 ,  A61B17/22

公开(公告)号：CA2212415A1

公开(公告)日：1996-08-15

申请号：CA2212415

申请日：1996-01-03

Applicant: VALLEYLAB INC

Inventor： BUYSSE STEVE ,  SCHMALTZ DALE F ,  PLATT ROBERT C JR

IPC: A61B18/00 ,  A61B18/14 ,  A61B17/36

Abstract: A surgical system (10) has a multiple electrode electrosurgical capability in combination with a gas plasma capability for delivery of electrosurgical energy to the tissue (14) or bodily fluids (15) of a patient (16). The system includes a holder (17), a source of electrical energy (20), electrodes connected to the source of electrical energy (20), one or more passages (22) carried on the holder (17) for transporting ionizable gas (23), and a source of ionizable gas (24) of a selectable flow rate. The gas passages (22) may include at least one electrode extending toward the operative site. The gas passages (22) may include a part (28) that creates a vortex in the gas flow. The electrodes may be coaxially placed in the gas passages (22). The system may also be configured such that two electrodes are each shrouded by the ionized gas so that the electrosurgical energy is conducted to the tissue (14) or bodily fluids (15) of the operative site by passing along conductive pathways (25) in the ionized gas from each electrode. There may also be a dielectric barrier (26) between the conductive pathways (25). The system may also be configured such that one of the multiple electrodes (11) is substantially in contact with the tissue (14) or bodily fluids (15) of the operative site and another of the multiple electrodes (11) is in the circuit through the conductive pathway of the ionized gas flow so that electrosurgical energy is conducted through the tissue (14) or bodily fluids (15) of the operative site and between the electrodes. Methods of manufacture and use for the system are also claimed.

公开(公告)号：AU126442S

公开(公告)日：1996-04-15

申请号：AU199502295

申请日：1995-07-28

Applicant: VALLEYLAB INC

公开(公告)号：FI961529A0

公开(公告)日：1996-04-04

申请号：FI961529

申请日：1996-04-04

Applicant: VALLEYLAB INC

Inventor： KLICEK MICHAEL S

IPC: A61B17/00 ,  A61B18/12 ,  A61B18/14 ,  A61B

公开(公告)号：CA2194987A1

公开(公告)日：1996-02-22

申请号：CA2194987

申请日：1995-07-10

Applicant: VALLEYLAB INC

Inventor： TAYLOR KENNETH D

IPC: A61B18/20 ,  A61B17/00 ,  A61B18/12 ,  A61B18/14 ,  A61B18/24 ,  A61B17/39

Abstract: A laser and electrosurgical system (10) has a handpiece (12) with a proximal and distal end (13) and (14) from which laser radiation (17) and/or electrosurgical energy (18) is selectively or concurrently directed. The ends are along an axis; an electrode extends distally along the axis. Sources of laser and electrosurgical energy (18) are available and controlled. An initiation circuit (25) for the laser selectively delivers it before electrosurgery. Prior delivery to target tissue, the laser creates an ionized conductive pathway for electrosurgery. The combined concurrent application of laser and electrosurgery has a mechanism (27) to selectively distribute energy about the axis. A laser deflecting surface (28) or a beam deflector vibrate relative to the axis. A power switch (30) has levels for laser cut and ionization and/or a delay therebetween for electrosurgical coagulation. A wave guide (34) or an array thereof deliver radiation along the axis. A method has steps of directing selectively and concurrently laser and electrosurgery by aiming the axis, controlling laser and electrosurgical energy (18), delivering laser before electrosurgery, forming an ionized conductive pathway for the electrosurgery, distributing the laser about the axis in a predetermined pattern by deflecting the laser in a predetermined pattern generally along but slightly displaced from the axis to direct electrosurgical energy (18) in a predefined pattern on the patient's (11) target tissue. In another possible approach, there are additional steps of delivering the laser radition (17) as a beam and varying an ionized conductive pathway by refracting or diffracting the laser radiation (17) beam with the mechanism (27) having a beam pattern deflector.

公开(公告)号：NO178092C

公开(公告)日：1996-01-24

申请号：NO895118

申请日：1989-12-19

Applicant: VALLEYLAB INC

Inventor： BROADWIN ALAN ,  KLEESATTEL CLAUS

IPC: A61B17/22 ,  A61B18/00 ,  A61M1/00 ,  A61F9/007

Abstract: An ultrasonic resonant vibrator comprising an ultrasonic vibration magnetostrictive transducer (1) and a resonant member (2,3) having a proximal end and a distal end for transmitting ultrasonic vibrations to an operating member (3) which is part of the resonant structure. The vibrator comprises an integral substantially rigid column having a central axis with fins extending radially relative to said axis and having a longitudinal hole defining a tunnel (8) centered along the central axis, wherein at least part of the resonant member is located within the tunnel; and a surgical handpiece incorporating such a vibrator.