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公开(公告)号：CA2128996C
公开(公告)日：1995-05-30
申请号：CA2128996
申请日：1991-03-13
Applicant: VALLEYLAB INC
Inventor： DELAHUERGA LOUIS , STODDARD ROBERT B , KLICEK MICHAEL S
Abstract: Electrosurgical apparatus for performing at least cutting and coagulation of biological tissue, which comprises a hand operated electrosurgical pencil comprising an electrically insulated housing and an electrode with a distal end defining a tip, means for supplying high-frequency, alternating current, electrical energy from a generator through the electrode to the tissue and means for returning electrical energy from the tissue to the generator to complete an electrical circuit, switching means mounted on the housing for selecting the cut mode or the coagulating mode, which switching means is connected to an isolated low voltage, direct current circuit which provides an appropriate signal to control the generator in the cut mode or coagulating mode, respectively, whereby the generator supplies the desired high-frequency, alternating current, electrical energy to the electrode and current leakage is limited.
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公开(公告)号：CA2038192C
公开(公告)日：1995-04-18
申请号：CA2038192
申请日：1991-03-13
Applicant: VALLEYLAB INC
Inventor： DELAHUERGA LOUIS , STODDARD ROBERT B , KLICEK MICHAEL S
Abstract: A device for enhancing the safety and efficiency of a hand-operated electrosurgical pencil having an electrode 2 with a distal end 2' 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.
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公开(公告)号：AU703586B2
公开(公告)日：1999-03-25
申请号：AU3352695
申请日：1995-09-11
Applicant: VALLEYLAB INC
Inventor： PAGE JON P , STODDARD ROBERT B
Abstract: A connection of first and second members wherein each has a body and a connecting end with an inner surface so the second connecting end has an outer surface shaped for telescoping into the inner surface of the first connecting end. A shoulder is located on the second member and a groove is in the outer surface of the second connecting end. A raised nub on the inner surface of the first connecting end is radially inward to engage the groove. An elastomeric gasket is positioned to bear against the shoulder and be compressed between the first and second bodies. An engaging trough in the groove holds the first connecting end against the shoulder with the nub against the groove by the compression force of the gasket. An indexing trough in the groove positioned along the groove beyond the engaging trough allows the nub to follow therethrough and slightly compress the gasket thus giving the user a tactile indication that it has been rotated beyond the engaging trough. A method for fluid tight attachment of members of a medical device has steps including providing the connection of the first and second members with ends by telescoping the ends. Locating a groove for operating the groove as a cam and locating a raised nub of material on the inner surface of the first connecting end for positioning the raised nub to engage the groove for operating the raised nub as a follower of the cam are steps. Compressing a gasket seal between the first connecting end and the shoulder while making the gasket seal from an elastomeric material is a step. Positioning an engaging trough in the groove to hold the first and second connecting ends against each other is a step. Positioning an indexing trough in the groove so when the nub is rotatably forced past the engaging trough it will further compress the first end against the gasket is a step.
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公开(公告)号：CA2200535A1
公开(公告)日：1997-09-21
申请号：CA2200535
申请日：1997-03-20
Applicant: VALLEYLAB INC
Inventor： STODDARD ROBERT B , KETCHAM CLIFF R , RESCHKE ARLAN J
Abstract: A circuit (10) concurrently activates a gas flow control valve (15) and electrosurgical generator (11) from an electrosurgical pencil (13). An automaticswitch (16) receives current flow upon the operation of the energy request button (12) by the surgeon. The switch connects to the gas surgical unit (26) flow control valve (15) operating it to control inert gas to the pencil. An electrode (32) and nozzle combination (30) transports ionizable gas to a tip (31) on the pencil for gas enhanced electrosurgery on a patient. An electrode (32) has proximal and distal ends (34) with a length (35) between and along an axis. A shroud (36) surrounds the electrode (32) along its length (35) leaving the proximal and distal ends (34) exposed. A patient part (37) on the shroud (36) points toward the patient. A rear part (38) on the shroud (36) points toward the rear or the pencil. The parts align substantially along the axis so a passage (39) between the parts defines a space(40) within the shroud (36) and about the length (35). A port in the shroud (36) has a lumen (42) protruding therefrom at an angle to the axis. The lumen (42) connects with the passage (39) for fluid communication. An end cap (43) attaches to the proximal end (33) for surrounding the electrode (32) and for forming a gas tight seal between the proximal end (33) and the rear part (38) of the shroud (36). A complimentary portion (44) on the rear part (38) and an anti rotation lock (45) on the end cap (43) engage to prevent relative rotary motion. An anti twist posterior (46) on the end cap (43) interengages with the pencil to prevent relative rotation. The anti twist posterior (46) and the pencil each have hexagonal interengaging features thereon. The shroud (36) and end cap (43) are of polymers that can be injection and overmolded, respectively to the electrode (32). A method makes a gas tight seal between a shroud (36) and an electrode (32) by injection molding then fixturing the electrode (32) without contact with the shroud (36). Overmolding an end cap (43) to the shroud (36) attaches the electrode (32) and to form the seal.
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公开(公告)号：AU672284B2
公开(公告)日：1996-09-26
申请号：AU6030194
申请日：1994-01-28
Applicant: VALLEYLAB INC
Inventor： BEATY MICHAEL A , JEFFREY-COKER BANDELE , OLICHNEY MICHAEL D , PAGE JON P , RESCHKE ARLAN J , ROSE EMERY S , STODDARD ROBERT B
Abstract: An ultrasonic and electrosurgical handpiece housing has an axis, a distal end, a proximal end and a passage defined by an inside wall. A piezo stack has elements carried along a plane generally transverse to the axis. A retainer for the elements has distal, intermediate and proximal portions. The distal portion has a fastener; the proximal portion has a threaded shoulder bolt. The stack about the shoulder has an energy input and a reference output positioned axially apart from one another. An insulating sleeve about the bolt is between central openings of the elements and the bolt. A pair of insulators about the bolt has the stack therebetween; one insulator is between the plane and the stack and the other is near the threads. The intermediate portion attaches to the housing at the plane with decoupling and sealing. An irrigation channel conveys fluid. The drive energy input, the feedback signal and the reference outputs are insulated by the sleeve and pair from the bolt. A washer against the insulator and about the threads applies axial but not torsion to the insulator when a clamping nut on the threads holds components on the bolt. The clamping nut is in circuit with electrosurgical energy as the reference return for electrosurgery. A tool fastens to a connector for transmitting axial vibrations in the form of a predefined stroke at a tip thereof.
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Patent Agency Ranking
公开(公告)号：NO953991D0
公开(公告)日：1995-10-06
申请号：NO953991
申请日：1995-10-06
Applicant: VALLEYLAB INC
Inventor： BEATY MICHAEL A , JEFFREY-COKER BANDELE , OLICHNEY MICHAEL D , PAGE JON P , RESCHKE ARLAN J , ROSE EMERY S , STODDARD ROBERT B
Abstract: An ultrasonic and electrosurgical handpiece housing has an axis, a distal end, a proximal end and a passage defined by an inside wall. A piezo stack has elements carried along a plane generally transverse to the axis. A retainer for the elements has distal, intermediate and proximal portions. The distal portion has a fastener; the proximal portion has a threaded shoulder bolt. The stack about the shoulder has an energy input and a reference output positioned axially apart from one another. An insulating sleeve about the bolt is between central openings of the elements and the bolt. A pair of insulators about the bolt has the stack therebetween; one insulator is between the plane and the stack and the other is near the threads. The intermediate portion attaches to the housing at the plane with decoupling and sealing. An irrigation channel conveys fluid. The drive energy input, the feedback signal and the reference outputs are insulated by the sleeve and pair from the bolt. A washer against the insulator and about the threads applies axial but not torsion to the insulator when a clamping nut on the threads holds components on the bolt. The clamping nut is in circuit with electrosurgical energy as the reference return for electrosurgery. A tool fastens to a connector for transmitting axial vibrations in the form of a predefined stroke at a tip thereof.
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公开(公告)号：CA2204746C
公开(公告)日：2000-06-06
申请号：CA2204746
申请日：1995-09-11
Applicant: VALLEYLAB INC
Inventor： STODDARD ROBERT B , PAGE JON P
IPC: F16L37/24 , A61B17/00 , A61B17/32 , F16L37/252
Abstract: A connection of first and second members (11 and 12) wherein each has a body and a connecting end with an inner surface (17) so the second connecting end (19) has an outer surface (20) shaped for telescoping into the inner surface (17) of the first connecting end (16). A shoulder (21) is located on the second member (12) and a groove (22) is in the outer surface (20) of the second connecting end (19). A raised nub (23) on the inner surface (17) of the first connecting end (16) is radially inward to engage the groove (22). An elastomeric gasket (13) is positioned to bear against the shoulder (21) and be compressed between the first and second bodies. An engaging trough (24) in the groove (22) holds the first connecting end (16) against the shoulder (21) with the nub against the groove (22) by the compression force of the gasket (13). An indexing trough (25) in the groove (22) positioned along the groove (22) beyond the engaging trough (24) allows the nub to follow therethrough and slightly compress the gasket (13) thus giving the user a tactile indication that it has been rotated beyond the engaging trough (24). A method for fluid tight attachment of members (11 and 12) of a medical device has steps including the connection of the first and second members (11 and 12) with ends by telescoping the ends. Locating a groove (22) for operating the groove (22) as a cam (14) and locating a raised nub (23) of material on the inner surface (17) of the first connecting end (16) for positioning the raised nub (23) to engage the groove (22) for operating the raised nub (23) as a follower of the cam (14) are steps. Compressing a gasket (13) seal between the first connecting end (16) and the shoulder (21) while making the gasket (13) seal from an elastomeric material is a step. Positioning an engaging trough (24) in the groove (22) to hold the first and second connecting ends (19) against each other is a step. Positioning an indexing trough (25) in the groove (22) so when the nub is rotatably forced past the engaging trough (24) it will further compress the first end against the gasket (13) is a step.
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公开(公告)号：FR2746294A1
公开(公告)日：1997-09-26
申请号：FR9703427
申请日：1997-03-20
Applicant: VALLEYLAB INC
Inventor： STODDARD ROBERT B , KETCHAM CLIFF R , RESCHKE ARLAN J
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公开(公告)号：DE19706269A1
公开(公告)日：1997-09-25
申请号：DE19706269
申请日：1997-02-18
Applicant: VALLEYLAB INC
Inventor： STODDARD ROBERT B , KETCHAM CLIFF R , RESCHKE ARLAN J
Abstract: An electrode and nozzle combination 30 for transporting gas to a tip 31 of an electrosurgical instrument for Argon gas enhanced electrosurgery comprises an elongate electrode 32 having a shroud 36 which leaves its ends 33 and 34 free, a gas passage 40 within the shroud, a gas supply port 41 connecting the passage 40 to a lumen protruding from the shroud in the proximal direction at an angle to the longitudinal axis of the electrode, and a cap 43 at the proximal end of the shroud forming a seal with the electrode. A conductive coating on the inside of the shroud may be connected to the electrode to eliminate electric potential across the passage. There may be complimentary hexagonal features on the electrode and cap to prevent relative rotation. The shroud may be injection moulded and the cap 43 overmoulded to the shroud and electrode.
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公开(公告)号：GB2311225A
公开(公告)日：1997-09-24
申请号：GB9703791
申请日：1997-02-24
Applicant: VALLEYLAB INC
Inventor： STODDARD ROBERT B , KETCHAM CLIFF R , RESCHKE ARLAN J
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