公开(公告)号：FI940808A0

公开(公告)日：1994-02-21

申请号：FI940808

申请日：1994-02-21

Applicant: VALLEYLAB INC

Inventor： FITTON LOIS ,  GORMAN WILLIAM J ,  MAKOWER JOSHUA ,  SODICKSON AARON

IPC: A61B17/00 ,  A61B17/02 ,  A61B17/28 ,  A61B17/30 ,  A61B17/34 ,  A61B

Abstract: A minimally invasive retractor and dissector for internal surgical use on a patient's body has a tubular support for passing into the patient's body. A proximal end on the tubular support located outside the patient's body is in position to provide access for the surgeon. A distal end on the tubular support located inside the patient's body to provide access within the patient for surgery. A control is located at the proximal end of the tabular support. One or more articulated members are movably positioned relative to the distal end of the tubular support so each of the articulated members allows swinging relative to the distal end. A rotator connects to the proximal end of the tubular support for movement relative to the control. An instrument moves independently of the tubular support when the articulated members and the distal tips cooperatively function on the tissue. The instrument passes simultaneously through a passage from the proximal end to beyond the distal end so the articulated members may position the tissue relative to the patient.

公开(公告)号：DE3788099D1

公开(公告)日：1993-12-16

申请号：DE3788099

申请日：1987-04-02

Applicant: VALLEYLAB INC

Inventor： BROADWIN ALAN ,  KREIZMAN ALEXANDER ,  PUIAM CHANA ,  PODANY VACLAV ,  EMERY LEONARD

IPC: A61B18/00 ,  A61B17/00 ,  A61B17/22 ,  A61B18/12 ,  A61M1/00 ,  B06B1/02 ,  A61B17/20

Abstract: A method and apparatus for periodically interrupting ultrasonic power applied to a ultrasonically vibrating tip to control its amplitude between high and low or zero amplitudes with a selectible duty cycle and repetition rate provides enhanced fragmentation and improves surgical control. The duty cycle may also vary as a function of a remotely sensed parameter such as tissue temperature.

公开(公告)号：FI935424A

公开(公告)日：1993-12-03

申请号：FI935424

申请日：1993-12-03

Applicant: VALLEYLAB INC

Inventor： KLICEK MICHAEL S ,  ZIEVE DAVID A

IPC: A61B18/00 ,  A61B17/22 ,  A61B18/12 ,  A61M1/00

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.

公开(公告)号：CA2128090A1

公开(公告)日：1993-08-19

申请号：CA2128090

申请日：1992-11-06

Applicant: VALLEYLAB INC

Inventor： ROSE EMERY S

IPC: A61B18/00 ,  A61B17/00 ,  A61B17/32 ,  A61B18/12 ,  A61F9/007 ,  A61M3/02 ,  B06B1/02 ,  A61B17/36

Abstract: 2128090 9315850 PCTABS00024 An electrical apparatus for driving an ultrasonic piezoelectric crystal transducer in a surgical handpiece for the fragmentation and aspiration of tissue, which apparatus includes an electronic control loop (12) in combination with a voltage source amplifier (2) having an output which is connected to the piezoelectric crystal transducer (3) with a tuning inductor (4) in parallel. A control system for monitoring the control loop (12) and a component for controlling tissue selectivity are also disclosed.

公开(公告)号：CA1318000C

公开(公告)日：1993-05-18

申请号：CA616191

申请日：1991-09-27

Applicant: VALLEYLAB INC

Inventor： WUCHINICH DAVID G ,  BRENDOLAN ROBERT ,  KATZ LOUIS

IPC: A61B10/00 ,  A61B10/02 ,  A61B17/22 ,  A61B17/32 ,  A61B18/00 ,  A61B18/14 ,  A61M1/00 ,  B06B1/02 ,  A61H21/00

Abstract: Apparatus for endoscopic removal of compliant biological tissues utilizing an endoscopic ultrasonic aspirator comprising irrigation and aspiration means, a piezoelectric ultrasonic transducer, a first resonator such as a half-wave stepped velocity transformer, a probe including a second resonator such as a constant-stress velocity transformer, a blunt or modified working tip of open channel means or restricted tubular means for application of ultrasonic energy to cellular material, and a capacitive fluid sensor to detect the presence of irrigation fluid adjacent these transformers within the instrument. The surgery is advantageously performed by operating the transducer in the 10-20 kHz range to achieve maximum cavitation of the intracellular fluids in the tissues to be removed.

公开(公告)号：DE9190051U1

公开(公告)日：1993-05-13

申请号：DE9190051

申请日：1991-03-27

Applicant: VALLEYLAB, INC., BOULDER, COL., US

IPC: A61B20060101 ,  A61B17/00 ,  A61B18/00 ,  A61B17/22 ,  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.

公开(公告)号：IE910856A1

公开(公告)日：1991-09-25

申请号：IE85691

申请日：1991-03-14

Applicant: VALLEYLAB INC

IPC: A61B18/12 ,  A61B18/00 ,  A61B17/36

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.

公开(公告)号：CA2128997A1

公开(公告)日：1991-09-16

申请号：CA2128997

申请日：1991-03-13

Applicant: VALLEYLAB INC

Inventor： DELAHUERGA LOUIS ,  STODDARD ROBERT B ,  KLICEK MICHAEL S

IPC: A61B18/12 ,  A61B18/00

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.

公开(公告)号：CA1279376C

公开(公告)日：1991-01-22

申请号：CA497191

申请日：1985-12-09

Applicant: VALLEYLAB INC

Inventor： PATERSON WILLIAM G

IPC: A61B18/00 ,  A61B18/12 ,  A61B17/39

Abstract: An electrosurgical generating system including an electrosurgical generator; a handpiece including an active electrode connected to the generator for applying electrosurgical current from the generator to a patient; and an initializing device or circuit for making an initial determination as to whether the handpiece includes power changing switches for changing the level of the output power delivered from the generator to the patient. Assuming the handpiece does include such switches, circuitry is also disclosed for limiting the amount the power can be increased or decreased from the handpiece. Also circuitry is disclosed for effecting the power increase or decrease in incremental steps.

公开(公告)号：NO165661B

公开(公告)日：1990-12-10

申请号：NO854748

申请日：1985-11-27

Applicant: VALLEYLAB INC

Inventor： NEWTON DAVID W ,  PATERSON WILLIAM G

IPC: A61B18/00 ,  A61B18/12 ,  A61B17/39