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With forceps or tweezers

Subclass of:

606 - Surgery

606001000 - INSTRUMENTS

606032000 - Electrical application

606041000 - Applicators

606049000 - coagulation

606050000 - Bipolar electrodes

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Entries
DocumentTitleDate
20110178519Vessel Sealing Instrument with Electrical Cutting Mechanism - An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes an electrically conductive tissue contacting surface connected to an electrosurgical energy source. At least one of the jaw members includes an electrically conductive cutting element disposed within an insulator defined in the jaw member. At least one channel is included in the insulator which is configured to deliver fluid between the jaw members.07-21-2011
20100023009OPEN VESSEL SEALING INSTRUMENT WITH HOURGLASS CUTTING MECHANISM AND OVERRATCHET SAFETY - An open electrosurgical forceps includes a pair of first and second shaft members each having a jaw member disposed at its distal end. The jaw members are movable from a first position in spaced relation relative to one another to a subsequent position wherein the jaw members cooperate to grasp tissue. Each of the jaw members includes an electrically conductive scaling plate for communicating electrosurgical energy through tissue. A curved knife channel is defined along the length of one of the jaw members and is dimensioned to reciprocate a cutting mechanism. An actuator selectively advances the cutting mechanism from a first position proximal to tissue held between the jaw members to a subsequent position distal to tissue held between the jaw members. The cutting mechanism includes a generally hourglass-shaped flexible blade having a mutually aggregating notch.01-28-2010
20100057081Tissue Fusion Jaw Angle Improvement - A bipolar forceps for sealing tissue includes an end effector assembly having opposing first and second jaw members having a proximal end and a distal end. The jaw members are moveable relative to one another from a first spaced apart position to a second position in which the jaw members cooperate to grasp tissue. Each of the jaw members includes an electrode having an electrically conductive tissue sealing surface. An electrical energy source may be connected to the tissue sealing surfaces so that the sealing surfaces can conduct energy to tissue. Each electrode may be pivotably connected to the respective jaw member to promote parallel closure of the sealing surfaces against tissue between the jaw members. Each electrode may be wedge-shaped such that the thickness of the electrode increases distally along a length thereof to promote parallel closure of the sealing surfaces against tissue between the jaw members.03-04-2010
20110196368Open Vessel Sealing Instrument - A disposable open electrosurgical forceps for sealing tissue is disclosed in the present disclosure. The disposable open electrosurgical forceps comprise a pair of first and second shaft members containing a fiber reinforced thermoplastic blend material having fiber strands of at least 2 millimeters in length. Each shaft member includes a jaw member disposed at a distal end thereof which are movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members also includes an electrically conductive sealing plate for communicating electrosurgical energy through tissue held therebetween. At least one of the jaw members includes a knife channel defined along a length thereof which is dimensioned to reciprocate a cutting mechanism therealong. An actuator is included for selectively advancing the cutting mechanism from a first position wherein the cutting mechanism is disposed proximal to tissue held between the jaw members to at least one subsequent position wherein the cutting mechanism is disposed distal to tissue held between the jaw members. The actuator includes a trigger which cooperates with a rack and pinion system to advance the cutting mechanism from the first to second positions through tissue held therebetween.08-11-2011
20090048596Electrically Conductive/Insulative Over Shoe for Tissue Fusion - An over shoe for use with electrosurgical instruments having a pair of juxtaposed jaw members pivotably associated with one another, at least one of which includes an electrically conductive surface disposed thereon which is in electrical engagement with an electrosurgical energy source. According to one aspect of the present disclosure, the over shoe includes a tissue contacting wall configured and dimensioned to selectively and substantially overlie the electrically conductive surface of the electrosurgical instrument. The tissue contacting wall is fabricated from a non-conductive material and includes a plurality of apertures formed therethrough. In another embodiment, the tissue contacting wall is electrically conductive and is configured for selective engagement atop on of the jaw members.02-19-2009
20100076431Apparatus, System and Method for Performing an Electrosurgical Procedure - An electrosurgical apparatus includes a housing having a shaft extending therefrom. The shaft includes an end effector assembly at a distal end thereof. The end effector assembly includes first and second fixed jaw members in spaced relation relative to one another. An electrically conductive tissue sealing plate is operatively coupled to each of the jaw members. The electrically conductive seal plates are adapted to connect to an electrosurgical energy source and communicate with a control system. The control system is configured to regulate the delivery of electrosurgical energy from the source of electrosurgical energy to the tissue sealing plate on each of the jaw members. A guide channel is disposed between the pair of fixed jaw members and extends proximally along the shaft from the distal end thereof. A knife is disposed at a proximal end of the guide channel and is configured to selectively cut tissue in a distal direction.03-25-2010
20100076430Electrosurgical Instrument Having a Thumb Lever and Related System and Method of Use - An electrosurgical instrument and system and method for performing electrosurgery therewith is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical system includes an electrosurgical instrument that provides a shaft, such as a laparoscopic shaft, having at the distal end thereof an end effector. The end effector may include without limitation a pair of movable jaws adapted to perform tissue fusion and/or vessel sealing. The electrosurgical instrument includes a movable thumb lever in operable communication with the shaft to enable the surgeon to rotate the shaft in an ergonomic, single-handed manner.03-25-2010
20100042100Vessel Sealing Instrument - A bipolar electrosurgical instrument for clamping, grasping, manipulating, and sealing tissue includes first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof. The handle being operable to effect movement of the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The bipolar instrument is connectable to a source of electrical energy having a first electrical potential connected to one of the jaw members and a second electrical potential connected to the other of the jaw members such that the jaw members are capable of selectively conducting energy though tissue held therebetween to effect a seal. Both the first and second electrical potentials are transmitted to the jaw members through the first shaft.02-18-2010
20090149854Spring Loaded Reciprocating Tissue Cutting Mechanism in a Forceps-Style Electrosurgical Instrument - Open electrosurgical forceps for sealing tissue which include a pair of first and second shaft portions each having a jaw member disposed at a distal end thereof. Each of the jaw members includes an electrically conductive sealing surface which communicates electrosurgical energy through tissue held therebetween with at least one of the jaw members including a knife slot defined along a length thereof. The knife slot is dimensioned to reciprocate a knife blade therefrom. The forceps also have a cutting mechanism which selectively actuates the knife blade from a first position wherein the knife blade is disposed at least substantially entirely within the knife slot of the jaw member to at least one subsequent position wherein the knife blade is at least partially deployed from the knife slot of the jaw member. The knife blade is displaceable in a direction transverse to a longitudinal axis of the forceps.06-11-2009
20090131934Electrosurgical Forceps with Slow Closure Sealing Plates and Method of Sealing Tissue - Electrosurgical bipolar forceps for sealing tissue is disclosed. The forceps includes a shaft member having an end effector assembly disposed at a distal end thereof. The end effector assembly includes jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a sealing plate that communicates electrosurgical energy through tissue held therebetween. One or more of the sealing plates includes one or more biasing members, the sealing plate is configured to slowly flex to accommodate pressure applied to the tissue until a specified closure pressure is obtained based upon at least one of tissue type and tissue thickness.05-21-2009
20080249527Electrosurgical instrument reducing current densities at an insulator conductor junction - An electrosurgical instrument having opposing end effectors and a handle for effecting movement of the end effectors relative to one another, includes a pair of electrodes each including an electrically conductive surface (e.g., which can be dimensioned for sealing, clamping and/or cutting), an insulating substrate having a first edge, and an insulating layer positioned in a channel formed by the electrically conductive surface within the first edge between the conductive surface and the first edge of the insulating substrate. The insulating layer has a portion proximal to the electrically conductive surface and a portion distal from the electrically conductive surface and a gradient such that the proximal portion has a lower dielectric strength than the distal portion. A coating on one of the pair of electrodes may be disposed in at least partial non-vertical registration with a coating on the opposing one of the pair of electrodes.10-09-2008
20120165818System and Method for Controlling Electrode Gap During Tissue Sealing - A forceps includes a housing, a shaft, an end effector assembly coupled to the distal end of the shaft and including opposing jaw members, and a drive rod slidingly disposed within the shaft. Each of the jaw members includes a sealing plate attached thereto. Longitudinal reciprocation of the drive rod moves at least one of the jaw members from a first position in spaced relation relative to the other jaw member to at least one subsequent position wherein the sealing plates cooperate to grasp tissue therebetween. The forceps also includes at least one sensor configured to sense a gap distance between the opposing jaw members, and a linear actuator operably coupled to the drive rod. The linear actuator is configured to reciprocate the drive rod in a longitudinal direction as a function of the sensed gap distance in response to signals provided by the at least one sensor.06-28-2012
20130046306Surgical Forceps - A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame including an engagement recess defined on each lateral side thereof and a replaceable component configured for slidable positioning about the jaw frame. The replaceable component includes an outer jaw housing having an engagement tang disposed on each lateral side thereof. The engagement tangs are configured to engage the engagement recesses of the jaw frame upon slidable positioning of the replaceable component about the jaw frame to secure the replaceable component to the jaw frame. The replaceable component includes an electrically conductive tissue sealing plate engaged to the outer jaw housing to define a tissue sealing surface.02-21-2013
20090182333Method and Apparatus for Surgical Electrocautery - The invention provides a surgical electrocautery method and apparatus that achieves sealing along the entire tissue length, and that also is able to deliver adequate force to produce an effective electrocautery seal. This problem is solved by using an incompressible fluid contained in a sac or sacs positioned to support the one or more electrodes used for electrocauterization. The profile of the electrodes thus conforms to the tissue surface and thickness variations, while exerting an optimized pressure along the entire length of the surface.07-16-2009
20090306660Vessel Sealing Instrument - A bipolar electrosurgical instrument for clamping, grasping, manipulating, and sealing tissue includes first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof. The handle being operable to effect movement of the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The bipolar instrument is connectable to a source of electrical energy having a first electrical potential connected to one of the jaw members and a second electrical potential connected to the other of the jaw members such that the jaw members are capable of selectively conducting energy through tissue held therebetween to effect a seal. Both the first and second electrical potentials are transmitted to the jaw members through the first shaft.12-10-2009
20110015632Mechanical Cycling of Seal Pressure Coupled with Energy for Tissue Fusion - An electrosurgical instrument for sealing tissue includes one or more elongated shafts having an end effector assembly attached at a distal end thereof that includes a pair of opposing jaw members movable by an actuator from a first spaced apart position to a second position for grasping tissue. One or both jaw members are adapted to connect to an electrical energy source such that electrosurgical energy can be supplied to tissue disposed therebetween. A controller is coupled to the actuator for regulating a closing pressure between the jaw members and a sensor is configured to provide feedback to the controller regarding a seal pressure of tissue disposed between the jaw members.01-20-2011
20090012520Vessel Sealer and Divider for Large Tissue Structures - An endoscopic bipolar forceps includes a housing having a shaft affixed thereto, the shaft including jaw members at a distal end thereof. The shaft includes jaw members adapted to connect to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. The forceps include a drive assembly that moves the jaw members relative to one another from a first position to a second position for manipulating tissue. A movable handle is included that is rotatable about a pivot. A knife assembly is also included having a movable knife rod to operatively engage a knife blade, the knife rod having a first longitudinal section having a first predetermined shape, and a second longitudinal section having a second predetermined shape. The first predetermined shape is different than the second predetermined shape.01-08-2009
20100057083Tissue Fusion Jaw Angle Improvement - A bipolar forceps for sealing tissue includes an end effector assembly having opposing first and second jaw members. Each of the jaw members includes an electrode having an electrically conductive tissue sealing surface. An electrical energy source may be connected to the tissue sealing surfaces so that the sealing surfaces can conduct energy to tissue. A trapezoidal pivot mechanism is operably connected to the jaw members and configured to allow selective movement of the jaw members relative to one another from a first spaced apart position to a second position. The trapezoidal pivot mechanism is configured to promote substantially parallel movement of the jaw members through a range of motion between the first position and the second position.03-04-2010
20110301601Apparatus for Performing an Electrosurgical Procedure - A surgical instrument is provided and includes a housing having a shaft. An end effector assembly is operatively connected to a distal end of the shaft and has a pair of first and second jaw members one of which is movable with respect to the other. A heat activated drive assembly operably couples to an actuation mechanism that is operably associated with the forceps and configured to supply thermal energy to the heat activated drive assembly. The heat activated drive assembly operably coupled to movable jaw member and configured to impart movement of the movable jaw member when the actuation mechanism is activated.12-08-2011
20110301602Apparatus for Performing an Electrosurgical Procedure - An endoscopic forceps is provided and includes a housing having a shaft that extends therefrom. An end effector assembly is operatively connected to a distal end of the shaft and includes a pair of first and second jaw members that are pivotably coupled to one another and movable relative to one another. The first and second jaw members are disposed in a first configuration, wherein the first and second jaw members are disposed in spaced relation relative to one another, to a second configuration, wherein the first and second jaw members cooperate to grasp tissue therebetween. A magnetic actuation mechanism is operably coupled to one or both of the first and second jaw members and configured to generate opposing magnetic fields on each of the first jaw and second jaw members to actuate the first and second jaw members between the first and second configurations.12-08-2011
20120010615SURGICAL INSTRUMENT COMPRISING AN ARTICULATABLE END EFFECTOR - A surgical instrument can comprise a handle and an end effector, wherein the end effector can comprise first and second jaws which can be opened and closed in order to capture tissue therebetween. The surgical instrument can further comprise a shaft extending between the handle and the effector and means for articulating the end effector relative to the shaft. The articulating means can comprise a portion of the shaft which is rotatable about a first axis in order to articulate the end effector about a second axis. In at least one embodiment, the shaft can comprise a first portion including a cam and a second portion including a cam follower, wherein the rotation of the second portion and the interaction of the cam and cam follower can cause the second portion to pivot relative to the first portion.01-12-2012
20090088748Insulating Mesh-like Boot for Electrosurgical Forceps - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof, the jaw members being movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle actuates a drive assembly to move the jaw members relative to one another and at least one of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. A flexible insulating boot is disposed on at least a portion of an exterior surface of one or both jaw members and about the pivot. The flexible boot includes a woven mesh-like base material that is covered with a layer of flexible silicone configured to reduce stray currents emanating from the jaw members and the pivot during electrical activation of the forceps.04-02-2009
20100036379Endoscopic Instrument for Tissue Identification - The present disclosure relates to various apparatus, systems and methods of identifying and treating tissue using at least one electrical property of tissue. Provided is a method for identifying and treating tissue, the method including providing a electrosurgical treatment device including an electrode assembly for measuring one or more electrical properties of a target tissue, the electrode assembly being mounted on a distal end thereof, measuring the one or more electrical characteristics of the target tissue, comparing the measured electrical property values of the target tissue against electrical property values of known tissue types, identifying a tissue type of the target tissue, adjusting an energy delivery configuration of the electrosurgical treatment device to the type of target tissue, and activating the electrosurgical treatment device to treat the target tissue.02-11-2010
20090292282Movable handle for vessel sealer - Bipolar forceps are provided including a shaft having opposing jaw members at a distal end thereof, the shaft defining a longitudinal axis; a drive assembly for moving the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween; and a handle assembly operatively connected to a proximal end of the shaft. The handle assembly includes a first handle and a second handle, wherein the handle assembly is pivotable between a first position in which handle assembly is angled with respect to the longitudinal axis and a second position in which the handle assembly is substantially axially aligned with the longitudinal axis. 11-26-2009
20090149853Tissue Sealer with Non-Conductive Variable Stop Members and Method of Sealing Tissue - A bipolar forceps for sealing tissue includes an elongated shaft having opposing jaw members at a distal end thereof, each of the jaw members including an electrically conductive sealing surface. The jaw members are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The bipolar forceps is connected to a source of electrical energy such that the Jaw members are capable of conducting bipolar energy through tissue grasped therebetween to effect a seal. The distance between the electrically conductive sealing surfaces when tissue is held therebetween is adjusted based upon a sensed pre-surgical condition during activation.06-11-2009
20110071525Insulating Boot for Electrosurgical Forceps - Either an endoscopic or open bipolar forceps includes a flexible, generally tubular insulating boot for insulating patient tissue, while not impeding motion of the jaw members. The jaw members are movable from an open to a closed position and the jaw members are connected to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. A knife assembly may be included that allows a user to selectively divide tissue upon actuation thereof. The insulating boot may be made from a viscoelastic, elastomeric or flexible material suitable for use with a sterilization process including ethylene oxide.03-24-2011
20100087817HIGH FREQUENCY OPERATION APPARATUS AND HIGH FREQUENCY OPERATION METHOD - A high frequency operation apparatus includes: a treatment section provided with electrodes for performing treatment of a living tissue; a switch section connected to each of the electrodes and switching conduction of the electrodes to configure paired electrodes from the electrodes; a power supply section for supplying high frequency power to the living tissue via the paired conductive electrodes; a biological information measuring section for sequentially measuring biological information; a determining section for determining if the measured values of biological information are within a predetermined range; and a control section for performing control so that the high frequency power is supplied to the living tissue by using only the paired electrodes corresponding to the measure value determined as being within the predetermined range.04-08-2010
20100094286Apparatus, System, and Method for Performing an Electrosurgical Procedure - A bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly at a distal end thereof The end effector assembly has a wheel assembly opposing a jaw member and having a pair of opposing wheels configured to facilitate movement of the wheel assembly relative to the jaw member. A drive rod is operably coupled at a proximal end to a movable handle and at a distal end to the wheel assembly. The movable handle is movable relative to a stationary handle to move the wheel assembly relative to the jaw member. At least one electrically conductive tissue sealing plate is disposed on each of the wheel assembly and the jaw member and is adapted to connect to an electrosurgical energy source configured to deliver electrosurgical energy to tissue held between the wheel assembly and the jaw member to effect a tissue seal.04-15-2010
20090088746Insulating Mechanically-Interfaced Boot and Jaws for Electrosurgical Forceps - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof, the jaw members being movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle actuates a drive assembly to move the jaw members relative to one another. One (or both) of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. A flexible insulating boot is disposed on an exterior surface of one or both jaw members and about the pivot and at least one retention element is configured to operably couple to both a proximal end of the jaw members and a distal end of the flexible insulating boot.04-02-2009
20090088747Insulating Sheath for Electrosurgical Forceps - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof that are movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle is included that actuates a drive assembly to move the jaw members relative to one another and one or both of the jaw members are adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. An insulative sheath is fitted for removal atop at least a portion of an exterior surface of one or both jaw members, about the pivot and the distal end of the shaft. The insulative sheath houses a silicone lube configured to facilitate insertion of the forceps through a cannula after removal of the insulative sheath.04-02-2009
20090088745Tapered Insulating Boot for Electrosurgical Forceps - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof that are movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle is included that actuates a drive assembly to move the jaw members relative to one another. One or both of the jaw members includes at least one mechanical interface and is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. A flexible insulating boot is disposed on at least a portion of an exterior surface of one or both jaw members and about the pivot. The flexible insulating boot includes both proximal and distal portions, the distal portion including a taper with a smaller annular diameter than the proximal portion of the flexible insulating boot.04-02-2009
20090043304Vessel Sealing Forceps With Disposable Electrodes - A removable electrode assembly for use in combination with a forceps having opposing end effectors and a handle for effecting movement of the end effectors relative to one another. The electrode assembly includes a housing which is removably engageable with the forceps and a pair of electrodes which are attachable to a distal end of the housing. The electrodes are removably engageable with the end effectors of the forceps such that the electrodes reside in opposing relation relative to one another. The electrode assembly also includes a cover plate which is removably attachable to the housing and at least one stop member for controlling the distance between the opposing electrodes. The stop member is selectively engageable with the electrodes.02-12-2009
20090292283SYSTEM AND METHOD FOR TISSUE SEALING - An electrosurgical bipolar forceps for sealing is disclosed. The forceps includes one or more shaft members having an end effector assembly disposed at the distal end. The end effector assembly includes two jaw members movable from a first position to a closed position wherein the jaw members cooperate to grasp tissue at constant pressure. Each of the jaw members includes an electrically conductive sealing plate connected to a first energy source which communicates electrosurgical energy through the tissue held therebetween. The electrosurgical energy is communicated at constant voltage. The electrically conductive sealing plates are operably connected to sensor circuitry which is configured to measure initial tissue impedance and transmit an initial impedance value to a controller. The controller determines the constant pressure and the constant voltage to be applied to the tissue based on the initial impedance value.11-26-2009
20090299367Surgical Instrument and Method - A surgical instrument includes an elongated body having a distal end, a proximal end, and a bore extending between the distal and proximal ends, a pair of jaws for severing vessel mounted on the distal end of the body, wherein at least one of the jaws has an electrically conductive material, and a handle coupled to the proximal end of the elongated body, wherein in a first mode of operation, the electrically conductive material is for receiving energy from a DC source, and in a second mode of operation, the electrically conductive material is for receiving energy from a RF source.12-03-2009
20080275446TWO-PIECE JAW FOR BIPOLAR ABLATION DEVICE - A method and device for transmural ablation using an electrosurgical device having a pair of angled clamping jaws designed to be disassembled outside the patient and reassembled within the patient in a series of method steps. This disassemble and reassemble design of the electrosurgical device fits within the narrow gap between ribs of the patient, and offers unusual opportunities to work in difficult to access areas such as the thoracic cavity. Once the surgery has been performed, the electrosurgical device can be disassembled in the patient and removed one piece at a time, or removed as a unit.11-06-2008
20090062794Electrosurgical Instrument Which Reduces Collateral Damage to Adjacent Tissue - An electrode assembly for use in combination with an electrosurgical instrument having opposing end effectors and a handle for effecting movement of the end effectors relative to one another. The electrode assembly includes a housing having one portion which is removably engageable with the electrosurgical instrument and a pair of electrodes each having an electrically conductive sealing surface and an insulating substrate. The electrodes are removably engageable with the end effectors of the electrosurgical instrument such that the electrodes reside in opposing relation relative to one another. The dimensions of the insulating substrate are different from the dimensions of the electrically conductive sealing surface to reduce thermal spread to adjacent tissue structures.03-05-2009
20080312653Mechanism for Dividing Tissue in a Hemostat-Style Instrument - Open electrosurgical forceps for sealing tissue are provided which include first and second shaft portions pivotably associated with one another. Each shaft portion has a jaw member disposed at a distal end thereof. Each of the jaw members includes an electrically conductive sealing surface adapted to communicate electrosurgical energy through tissue held therebetween and a slot formed through the sealing surface thereof. The forceps includes a cutting mechanism operatively associated with the first and second jaw members. The cutting mechanism includes a cutting element disposed within the slot of the at least one jaw member, the cutting element being movable from a first position wherein the cutting element is retracted within the at least one jaw member and a second position in which the cutting element at least partially projects from a sealing surface of the at least one jaw member.12-18-2008
20100280515Vessel Sealer and Divider for Large Tissue Structures - An endoscopic bipolar forceps includes a housing having a shaft affixed thereto, the shaft including jaw members at a distal end thereof. The shaft includes a longitudinal axis defined therethrough and the jaw members are adapted to connect to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. The forceps also includes a drive assembly which moves the jaw member relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for manipulating tissue. A movable handle is included which is rotatable about a pivot to force the drive assembly to move the jaw members between the first and second positions. The pivot is located a fixed distance above the longitudinal axis. A knife assembly is also included which has a movable knife bar having a generally t-shaped proximal end dimensioned to operatively engage a corresponding slot defined within the housing, the slot being dimensioned to guide the movement of the knife bar during translation thereof.11-04-2010
20100145335Vessel Sealer and Divider With Rotating Sealer and Cutter - An electrosurgical instrument includes a housing having a shaft attached thereto which defines a longitudinal axis therethrough. The instrument also includes first and second opposing jaw members coupled to the shaft, the first jaw member having a conductive surface and movable relative to the second jaw member. The second jaw member is fixed relative to the shaft and includes an electrode rotatable along the longitudinal axis. The rotatable electrode has a sealing surface and a cutting edge. One or more non-conductive stop members are disposed on the first and/or second jaw members that are dimensioned to control the distance between the electrically conductive surfaces when tissue is held therebetween. The jaw members are connected to an electrosurgical energy source such that the jaw members are capable of conducting energy through tissue held therebetween.06-10-2010
20090076506ELECTROSURGICAL INSTRUMENT AND METHOD - An electrosurgical working end and method for sealing and transecting tissue are provided. An exemplary electrosurgical working end has openable-closeable first and second jaws for progressively clamping a selected tissue volume. A method of the invention comprises applying electrosurgical energy to the tissue in either a first mode or a second mode based on the degree of jaw closure.03-19-2009
20090024126Tissue fusion device - A bipolar surgical instrument for fusing tissue includes first and second grasping members each having an end effector assembly attached at a distal end thereof. Each end effector assembly including a first jaw member with an active electrode disposed thereon and a second jaw member with a dielectric member disposed thereon. The first and second jaw members of each end effector are disposed in substantial opposing relation relative to one another and are movable from a first spaced position relative to one another to a second closer position for grasping tissue. Each active electrode is operably connected to an electrosurgical energy source. A surgical crimping tool is included and is selectively positionable to mechanically engage and crimp the active electrodes of the grasping members in a juxtaposed, side-by-side manner relative to one another prior to electrosurgical activation to fuse tissue into a unified tissue mass.01-22-2009
20090082768Bipolar Medical Instrument - A bipolar medical instrument has a shaft and two jaw parts arranged at said distal end thereof. An axially movable force transmission element is disposed with said shaft and is surrounded by an isolating element. Said isolating element is connected to at least one of said two jaw parts in an articulated manner. Said two jaw parts are electrically isolated from one another and each provides an electrode to which high frequency current can be applied. A first electrical supply line is formed along said shaft via an electrically conductive first contact element to one of said two jaw parts. A second electrical supply line is formed along said axially movable force transmission element via an electrically conductive second contact element to the other of said two jaw parts. The first contact element is fixed at said isolating element surrounding said distal end area of said force transmission element.03-26-2009
20090082767Tissue Sealer and End Effector Assembly and Method of Manufacturing Same - A method for manufacturing an end effector assembly for sealing tissue includes the initial step of providing a pair of first and second jaw members each including an inwardly facing electrically conductive sealing surface. The method also includes the steps of: coating the inwardly facing electrically conductive sealing surface of one or both jaw members with an insulative material, the coating having a thickness within the range of about 0.001 inches to about 0.010 inches; allowing the insulative material to cure onto the inwardly facing electrically conductive sealing surface; removing a portion of the insulative material from the inwardly facing electrically conductive sealing surface to form a series of stop members arranged thereacross; and assembling the pair of first and second jaw members about a pivot such that the two inwardly facing electrically conductive sealing surfaces are substantially opposed to each other in pivotal relation relative to one another.03-26-2009
20090082766Tissue Sealer and End Effector Assembly and Method of Manufacturing Same - A bipolar forceps for sealing tissue includes at least one shaft having an end effector assembly disposed at a distal end thereof. The end effector assembly includes a pair of first and second opposing jaw members movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. At least the first jaw member includes proximal and distal ends which define a cavity along a length thereof which houses an insulative member therein. The insulative member includes an electrically conductive sealing surface mounted thereto which resides in substantial opposition with a second electrically conductive sealing surface disposed on the second jaw member. One end of the first jaw member which defines the cavity extends a fixed distance toward the second jaw member to form a gap between electrically conductive surfaces when the jaw members are closed to grasp tissue.03-26-2009
20090204114Electrosurgical Forceps with Slow Closure Sealing Plates and Method of Sealing Tissue - An electrosurgical system for sealing tissue includes electrosurgical bipolar forceps and an electrosurgical generator. The electrosurgical bipolar forceps includes a shaft member having an end effector assembly disposed at a distal end. The end effector assembly includes jaw members movable from a first position in spaced relation relative to one another to a subsequent position. The jaw members are adapted to cooperate to grasp tissue therebetween. The jaw members each include a sealing plate that communicates electrosurgical energy through the held tissue. The gap sensor is adapted to sense the gap distance between the jaw members. The electrosurgical generator is operatively coupled to the electrosurgical bipolar forceps and generates the electrosurgical energy. The electrosurgical generator is in operative communication with the gap sensor and monitors a sensed gap distance therefrom. The electrosurgical generator generates the electrosurgical energy based on the sensed gap distance as a function of time.08-13-2009
20090209960End Effector Assembly for Electrosurgical Device - A bipolar forceps is provided and includes a housing having a shaft that extends therefrom which defines a longitudinal axis therethrough. The housing including a drive assembly disposed therein and is operable to reciprocate an actuation tube within the shaft. The bipolar forceps includes an end effector assembly operatively connected to a distal end of the shaft and has a pair of first and second jaw members. The first and second jaw members are pivotable about a living hinge and are adapted to connect to an electrosurgical energy source. Each of the jaw members includes a cam slot defined at a proximal end thereof. One or more of the jaw members is operatively connected to a distal end the actuation tube via a cam pin such that distal reciprocation of the actuation tube cams each of the jaw members towards one another about the respective living hinge to grasp tissue.08-20-2009
20090248021End Effector Assembly for Electrosurgical Devices and System for Using the Same - A bipolar forceps is provided and includes a housing having one or more shafts that extend therefrom that operatively support an end effector assembly at a distal end thereof. The end effector assembly includes first and second jaw members. A tissue sealing plate disposed on each of the jaw members is provided. The tissue sealing plates is configured to support a plurality of electrodes thereon and arranged in vertically opposing pairs along the length of the jaw members. The plurality of electrodes is adapted to independently connect to an electrosurgical energy source such that each vertically opposing electrode pairs form an independently controllable electrical circuit when tissue is held between the jaw members. A control system having one or more algorithms for independently controlling and/or monitoring the delivery of electrosurgical energy from the electrosurgical energy source to the plurality of electrodes is also provided.10-01-2009
20090248022ELECTROSURGICAL SYSTEM - Phase end point determination is provided to automatically halt the application of energy to tissue. Prior to the application of energy, the phase end point determination is identified by measuring the product of permittivity and conductivity of the tissue to be treated.10-01-2009
20090088744Insulating Boot for Electrosurgical Forceps With Thermoplastic Clevis - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof that are movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle is included that actuates the shaft to move the jaw members relative to one another At least one of the jaw members is adapted to connect to a source of electrical energy such that one or both jaw members are capable of conducting energy to tissue held therebetween. An insulating boot is disposed on at least a portion of an exterior surface of one or both jaw members about the pivot and at a distal end of the shaft. The insulating boot includes an overmolded thermoplastic clevis disposed on an inner periphery thereof that is configured to enhance the mechanical engagement of the insulating boot with the one or both jaw members and the distal end of the shaft.04-02-2009
20100179545Vessel Sealer and Divider - An electrosurgical instrument for treating tissue includes a housing having a shaft extending therefrom having an axis A-A defined therethrough. The shaft is at least partially flexible and includes first and second jaw members attached at a distal end thereof. Each jaw member includes an electrically conductive tissue contacting surface adapted to connect to a source of electrosurgical energy such that the electrically conductive tissue contacting surfaces are capable of conducting electrosurgical energy through tissue held therebetween. A drive assembly is disposed in the housing and has a first actuator operably coupled to a drive rod for reciprocation thereof to move the jaw members from a first position in spaced relation to one another to a second position closer to one another for engaging tissue. A second actuator is disposed on the housing and is actuatable to articulate the shaft07-15-2010
20100241119FOUR FUNCTION SURGICAL INSTRUMENT - A unique four function surgical instrument that performs aspiration, irrigation, dilation and cauterization with an innovative trigger mechanism. An embodiment is “gun-like” in configuration having a housing with a depending handle and a protruding trigger, a forward extending pair of forceps-like arms that terminate in dilation/cauterization tips and a common conduit between the forceps-like arms. The unique trigger mechanism utilizes a pinch valve concept where the trigger button has an elongated portion that has two slide surfaces with offset a recesses that act like tracks on which pinch sliders follow and the pinch sliders act like valve stems that squeeze close and allow to open silicone tubing. The end result, being a single poll, two stage actuator such that a half a pump of the trigger delivers irrigation or aspiration and a full pump delivers the other. The instrument provides the advantages of small size, ergonomical and all-in-one so as to eliminate the need for a surgeon to fumble around in switching between instruments.09-23-2010
20090112206Bipolar Forceps Having Monopolar Extension - An endoscopic forceps for treating tissue includes a housing having a shaft affixed thereto which has first and second jaw members attached to a distal end thereof. The forceps also includes an actuator for moving jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members is adapted to connect to a source of electrosurgical energy such that the jaw members are selectively capable of operating in a bipolar mode which enables the jaw members to conduct bipolar energy through tissue held therebetween to treat tissue. The forceps also includes a monopolar element housed within the first jaw member and integrally associated with the knife. The monopolar element is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member. The monopolar element is adapted to connect to the source of electrosurgical energy such that the monopolar element is selectively activateable independent of the bipolar mode.04-30-2009
20110238066Clamp and Scissor Forceps - A forceps includes a housing having a shaft attached thereto and an end effector assembly disposed at a distal end of the shaft, the end effector assembly includes first and second jaw members disposed in opposed relation relative to one another. At least one of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. Each of the jaw members includes first and second longitudinal jaw halves. At least one of the first and second jaw halves of each jaw member is moveable with respect to the other jaw half between an aligned position and a displaced position for cutting tissue disposed between the jaw members.09-29-2011
20090069810BIOLOGICAL TISSUE CLOSING DEVICE - A biological tissue closing device includes a clamper comprising a stick portion provided at a distal portion of a catheter for sticking to a biological tissue, and a sandwich member for sandwiching the biological tissue in cooperation with the stick portion, and an electric energy supply unit for supplying electric energy to the clamper. The biological tissue is fused by making the stick portion and the sandwich member of the clamper be electrode members, by sandwiching the biological tissue with the damper and by supplying electric energy from the electric energy supply unit, wherein the damper is configured so that each of the stick portion and the sandwich member are movable independently with respect to the catheter.03-12-2009
20090069809PFO CLOSING DEVICE - A PFO closing device includes: a clamper including a stick portion provided at a distal portion of a catheter for sticking to a foramen ovale valve and a sandwich member for sandwiching a biological tissue composed of the foramen ovale valve and an atrial septum secundum in cooperation with the stick portion; a cautery device including at least one electrode portion to be inserted into the foramen ovale between the foramen ovale valve and the atrial septum secundum; and an electric energy supply unit for supplying electric energy to the electrode portion, wherein the electrode portion is inserted into the foramen ovale and at the same time, the foramen ovale valve and the atrial septum secundum are sandwiched by the clamper, electric energy is supplied from the electric energy supply unit to the electrode portion and the foramen ovale valve and the atrial septum secundum are mutually fused.03-12-2009
20110009863Shaft Constructions for Medical Devices with an Articulating Tip - An endoscopic surgical instrument for sealing tissue includes an end effector having a pair of jaw members adapted to connect to a source of electrosurgical energy. At least one jaw member is movable relative to the other between an open configuration and a closed configuration for grasping tissue. A handle is movable to induce motion in the end effector between the open and closed configurations. An elongated shaft defines a longitudinal axis and is coupled between the end effector and the handle. The shaft includes a plurality of links arranged such that neighboring links engage one another across a pair of edges to maintain the end effector in an aligned configuration with respect to the longitudinal axis. Each of the edges is spaced laterally from the longitudinal axis. The neighboring links may pivot about the rotational edges to move the end effector to an articulated configuration.01-13-2011
20090088750Insulating Boot with Silicone Overmold for Electrosurgical Forceps - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof that are movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle is included that actuates a drive assembly to move the jaw members relative to one another and one or more of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. An insulative material, e.g., silicone, is overmolded atop at least a portion of an exterior surface of one or both jaw members, about the pivot and the distal end of the shaft.04-02-2009
20090326530VESSEL SEALING INSTRUMENT WITH STEPPED JAW - A vessel sealer has a stepped jaw that allows the jaw to have an overall shape and a width that provides desired strength, shape, and functionality while permitting a smaller raised portion to apply the sealing pressure. The smaller area applying the sealing pressure allows an actuating mechanism to apply a clinically desired sealing pressure without exceeding the force or torque limitations of the actuating mechanism and can limit thermal spread during a sealing procedure.12-31-2009
20100057082Tissue Fusion Jaw Angle Improvement - A bipolar forceps for sealing tissue includes an end effector assembly having opposing first and second jaw members having a proximal end and a distal end. The jaw members are moveable relative to one another from a first spaced apart position to a second position in which the jaw members cooperate to grasp tissue. Each of the jaw members includes an electrode having an electrically conductive tissue sealing surface. An electrical energy source may be connected to the tissue sealing surfaces so that the sealing surfaces can conduct energy to tissue. Each electrode may be pivotably connected on a distal end to the respective jaw member to promote parallel closure of the sealing surfaces against tissue between the jaw members. Each electrode may be connected to its respective jaw member on a proximal end via a resilient member to bias the electrode against tissue disposed between the jaw members.03-04-2010
20100057084Tissue Fusion Jaw Angle Improvement - A bipolar forceps for sealing tissue includes an end effector assembly having opposing first and second jaw members having a proximal end and a distal end. The jaw members are moveable relative to one another from a first spaced apart position to a second position in which the jaw members cooperate to grasp tissue. Each of the jaw members includes an electrode having an electrically conductive tissue sealing surface. An electrical energy source may be connected to the tissue sealing surfaces so that the sealing surfaces can conduct energy to tissue. Each electrode may be hingedly connected to the respective jaw member to promote parallel closure of the sealing surfaces against tissue between the jaw members.03-04-2010
20110077648Switch Assembly for Electrosurgical Instrument - An electrosurgical forceps includes a housing having a shaft affixed thereto, the shaft including jaw members at a distal end thereof. The forceps also includes a switch assembly that includes a supporting member, a flexible membrane circuit having snap dome switch contacts operably fixed thereto, and ergonomically-contoured keytops. The switch assembly provides at least one monopolar activation switch, and a bipolar activation switch. The forceps also include a drive mechanism which causes the jaw members to move relative to one another for manipulating tissue. A monopolar safety switch is incorporated into the switch assembly which cooperates with the drive mechanism to inhibit the monopolar activation switch when the jaw members are in an open position.03-31-2011
20120303026Vessel Sealer and Divider With Non-Conductive Stop Members - An endoscopic bipolar forceps includes an elongated shaft having opposing jaw members at a distal end thereof. The jaw members are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The jaws members are connected to a source of electrical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. At least one non-conductive and spaced-apart stop member is disposed on an inner-facing surface of the jaw members to regulate the gap distance between the jaw members when tissue is held therebetween. The forceps also includes a longitudinally reciprocating knife which severs the tissue after sealing at a location which is proximate the sealing site.11-29-2012
20120303025Apparatus for Performing an Electrosurgical Procedure - An endoscopic forceps is provided and includes a housing having a shaft that extends therefrom. An end effector assembly is operatively connected to a distal end of the shaft and includes a pair of pivotably coupled first and second jaw members. The jaw members are movable relative to one another. A drive mechanism includes a driving structure. A link assembly includes two or more links that are operably coupled to each other and the drive structure. The two or more links are operably coupled to respective ones of the first and second jaw members.11-29-2012
20080243120Bipolar forceps having monopolar extension - An endoscopic forceps for treating tissue includes a housing having a shaft affixed thereto which has first and second jaw members attached to a distal end thereof. The forceps also includes an actuator for moving jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members is connected to a source of electrosurgical energy such that the jaw members are selectively capable of operating in a bipolar mode which enables the jaw members to conduct bipolar energy through tissue held therebetween to treat tissue. The forceps also includes a monopolar element housed within the first jaw member which is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member. The monopolar element is connected to the source of electrosurgical energy and is selectively activateable independent of the bipolar mode.10-02-2008
20090088749Insulating Boot for Electrosurgical Forceps with Exohinged Structure - An electrosurgical forceps includes a shaft having a pair of jaw members at a distal end thereof that are movable about a pivot from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for grasping tissue. A movable handle is included that actuates the shaft to move the jaw members relative to one another. One or both of the jaw members are adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy to tissue held therebetween. An insulating boot is disposed on at least a portion of an exterior surface of one or both jaw members, about the pivot and at a distal end of the shaft. The insulating boot includes an inner flexible portion and an outer shell that is operably engaged with one or both of the pair of jaw members.04-02-2009
20110054472Open Vessel Sealing Instrument with Pivot Assembly - An open electrosurgical forceps includes a pair of first and second shaft members each having a jaw member disposed at its distal end. The jaw members are movable about a pivot assembly from an open position in spaced relation relative to one another to a closed position wherein the jaw members cooperate to grasp tissue. Each of the jaw members includes an electrically conductive sealing surface for communicating electrosurgical energy through grasped tissue. One or both of the jaw members includes a knife channel defined along its length. The pivot assembly includes a knife slot and is configured to prevent reciprocation of a cutting mechanism when the jaw members are disposed in the open position and to permit reciprocation of the cutting mechanism when the jaw members are disposed in the closed position. An actuator selectively advances the cutting mechanism from a first position to at least one subsequent position.03-03-2011
20110054471Apparatus for Performing an Electrosurgical Procedure - A surgical instrument is provided. The surgical instrument includes a housing having a shaft that extends therefrom that defines a longitudinal axis therethrough. An end effector assembly is operatively connected to a distal end of the shaft and includes a pair of first and second jaw members. The surgical instrument includes a handle assembly that includes a movable handle movable relative to a fixed handle operable to impart movement of the jaw members relative to one another. A rotating assembly is configured for rotating one of the shaft and end effector assembly about the longitudinal axis. The rotating assembly is supported in the housing and includes first and second drive. Each of the first and second drive wheels are selectively movable relative to the housing and configured such that rotation of the first drive wheel causes rotation of the second drive wheel and the shaft.03-03-2011
20110118736Surgical Forceps Capable of Adjusting Sealing Pressure Based on Vessel Size - A surgical forceps includes a housing having one or more shafts attached thereto and an end effector assembly disposed at a distal end thereof. The end effector assembly includes first and second jaw members disposed in opposing relation relative to one another. At least one jaw member is moveable from an open position to a closed position for grasping tissue therebetween. The jaw members include at least one sensing component that determines an output of one or both of cross-sectional diameter and composition of tissue disposed between the jaw members. A processing component is configured to receive the output and determine a seal pressure for adequately sealing tissue disposed between the jaw members based upon the output. A regulating component regulates the movement of the jaw members between the first and second positions such that the determined seal pressure is applied to tissue disposed therebetween.05-19-2011
20110046624SINGLE HANDLED ENDOSCOPIC VESSEL HARVESTING SYSTEM WITH ROTATION CONTROL - A surgical instrument includes an elongated tube having a proximal end and a distal end, a handle coupled to the proximal end of the tube, and a tool that is rotatable and translatable relative to the tube, wherein the handle includes a control for rotating the tool relative to the tube, and wherein the control is coupled to the tool such that a movement of the control through an angle θ02-24-2011
20100179546Apparatus, System, and Method for Performing an Electrosurgical Procedure - An electrosurgical instrument for treating tissue includes a housing having a flexible shaft extending therefrom having an axis A-A defined therethrough. The flexible shaft has first and second jaw members attached at a distal end thereof and each jaw member includes an electrically conductive tissue contacting surface adapted to connect to a source of electrosurgical energy. A drive assembl is disposed in the housing and has a first actuator operably coupled to a drive rod for reciprocation thereof and a second actuator operably coupled to the drive rod for rotation thereof. A knife is operably coupled to a distal end of the drive rod. Actuation of the first actuator moves the jaw members relative to one another for engaging tissue and actuation of the second actuator rotates the drive rod about the axis A-A to translate the knife to cut tissue disposed between the jaw members.07-15-2010
20100179547Apparatus, System, and Method for Performing an Electrosurgical Procedure - A bipolar forceps is provided. The bipolar forceps includes a housing having a shaft including an electrically conductive distal end. A drive assembly is operable to reciprocate an actuation tube within the shaft. A portion of the actuation tube is electrically conductive. An end effector assembly operatively connects to the shaft and includes a pair of first and second jaw members biased in an open configuration. The first and second jaw members are pivotable about a living hinge. Distal reciprocation of the actuation tube causes each of the jaw members towards one another about the living hinge. One of the jaw members is in electrical communication with the distal end of the shaft and the other jaw member is in selective electrical communication with a distal end of the actuation tube such that when the jaw members are in a closed configuration a closed loop electrical circuit is formed.07-15-2010
20090030414Four Function Surgical Instrument - A unique four function surgical instrument that performs aspiration, irrigation, dilation and cauterization with an innovative trigger mechanism. An embodiment is “gun-like” in configuration having a housing with a depending handle and a protruding trigger, a forward extending pair of forceps-like arms that terminate in dilation/cauterization tips and a common conduit between the forceps-like arms. The unique trigger mechanism utilizes a pinch valve concept where the trigger button has an elongated portion that has two slide surfaces with offset a recesses that act like tracks on which pinch sliders follow and the pinch sliders act like valve stems that squeeze close and allow to open silicone tubing. The end result, being a single poll, two stage actuator such that a half a pump of the trigger delivers irrigation or aspiration and a full pump delivers the other. The instrument provides the advantages of small size, ergonomical and all-in-one so as to eliminate the need for a surgeon to fumble around in switching between instruments.01-29-2009
20090171353Vessel Sealing Instrument - A bipolar electrosurgical instrument for clamping, grasping, manipulating, and sealing tissue includes first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof. The handle being operable to effect movement of the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The bipolar instrument is connectable to a source of electrical energy having a first electrical potential connected to one of the jaw members and a second electrical potential connected to the other of the jaw members such that the jaw members are capable of selectively conducting energy through tissue held therebetween to effect a seal. Both the first and second electrical potentials are transmitted to the jaw members through the first shaft.07-02-2009
20090171354Cordless Medical Cauterization and Cutting Device - A cordless surgical device includes a modular battery, a radio-frequency signal generating assembly, a surgical handle and an interchangeable circuit casing. The RF signal generating assembly includes RF-signal-generating circuitry, a voltage-control circuit and an external output. The voltage circuit is configured to control an output of the RF-signal-generating circuitry. The handle is configured to support a bipolar end effector having jaws with bipolar contacts and a cutting blade disposed between the jaws. The handle includes leads operable to receive RF signals from the external output and defines an aseptically sealable battery-holding compartment configured to hold the battery. The circuit casing is configured to house the RF signal generating assembly and includes a securing connection adapted to couple the external output of the RF signal generating assembly to the leads. The external output is operable to impart RF signals to the handle when the circuit casing connects to the handle.07-02-2009
20120310241Electrosurgical Apparatus with Tissue Site Sensing and Feedback Control - An electrosurgical system and method for transmitting, monitoring, and controlling electrosurgical energy and tissue parameter quality at the tissue site. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminal which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof.12-06-2012
20120046662Method of Manufacturing Tissue Sealing Electrodes - The present disclosure relates to an electrode assembly for use with an electrosurgical instrument. The electrode assembly includes a pair of opposing jaw members and an electrode positioned on each jaw member. One or both of the electrodes includes a tissue contacting surface that has an outer periphery and defines a side surface depending therefrom. The tissue contacting surface and the side surface include a conjoining edge formed at a first predetermined angle that defines a first linear transition zone dimensioned to reduce arcing between the opposing jaw members during activation of the electrosurgical instrument.02-23-2012
20090012519Electro-Surgical Bipolar Forceps - An electro-surgical bipolar forceps includes a first tip and a second tip, each having a body. The body has a distal end and a proximal end. The body has a first groove having a substantially planar base proximate the proximal end. A substantially planar face is proximate to the distal end of the tip body. The base and the face on each tip define planes that are approximately perpendicular with respect to each other. A tip assembly includes a tip and an engagement plug. When making the tip assembly, a planar surface on the engagement plug is aligned with the planar base of the groove in the tip. Then the tip is connected to the engagement plug.01-08-2009
20120059375Asymmetrical Electrodes for Bipolar Vessel Sealing - Bipolar electrosurgical instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes an outer housing, and an inner tissue engaging surface corresponding to the inner tissue engaging surface of the opposing jaw. The instruments includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include asymmetrical electrodes disposed on the inner tissue engaging surfaces. A first contact region of the electrode has a greater surface area than that of the second contact region. During resection procedures wider electrodes impart improved sealing energy to the patient-side vessel while providing sufficient energy to resected tissue to effect hemostasis.03-08-2012
20100057085SURGICAL GRASPING DEVICE - A surgical device comprising a clevis defining a longitudinal axis and a jaw comprising a first member and a second member. A slider is slidably engaged to the clevis, the slider comprising a pin. The pin is receiveably engaged in the first slot and the jaw is selectively moveable between a first position and a second position through longitudinal movement of the slider. In various embodiments, the first and second members are movable between an angular open position, a parallel open position, and a parallel closed position.03-04-2010
20110066150BIPOLAR CLAMP FOR HF SURGERY - A bipolar clamp for high-frequency surgery, in particular for coagulating tissue, having at least two bipolar clamping parts which are movable relative to one another, defining a grasping region between an open position and a coagulation position (e.g., closed position) and having electrodes for coagulating tissue that is grasped by the clamping parts in the grasping region. The clamping parts are formed of an electrically conductive core which is surrounded by a thin-layer electrical insulation and the electrodes are arranged on the clamping parts as thin pin electrodes that protrude through the thin-layer electrical insulation into the grasping region.03-17-2011
20120123413Method and Apparatus for Vascular Tissue Sealing with Active Cooling of Jaws at the End of the Sealing Cycle - An end effector assembly for use with an electrosurgical instrument is provided. The end effector assembly has a first jaw member and a second jaw member. The second jaw member includes a channel defined therein and coupled to a cooling agent source and at least one venting port defined therein and fluidly coupled to the channel. During active cooling of the second jaw member, the cooling agent source is configured to supply a cooling agent to the channel.05-17-2012
20100094288System and Method for Delivering High Current to Electrosurgical Device - An electrosurgical system is disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical power and an electrosurgical device coupled to the electrosurgical generator. The electrosurgical device includes a transformer and one or more active electrodes coupled thereto, wherein the transformer is adapted to step down the voltage of the power supplied by the electrosurgical generator.04-15-2010
20100094287Apparatus, System, and Method for Performing an Endoscopic Electrosurgical Procedure - A bipolar forceps is provided and includes a housing having a shaft that extends therefrom. The housing includes a drive assembly operable to reciprocate an actuation tube within the shaft. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members biased in an open configuration. One or both of the first and second jaw members is pivotable about a living hinge from a first position to a clamping position. One or both of the jaw members includes a cam slot defined at a proximal end thereof. One of the jaw members is operatively connected to a distal end of the actuation tube via a cam pin that operatively engages the cam slot such that proximal reciprocation of the actuation tube cams at least one jaw member towards the other jaw member about the living hinge04-15-2010
20090131933Bipolar forceps - A bipolar forceps including a first electrode, a second electrode, and a conductor operably connected to an electrical source, wherein the conductor can be selectively placed in electrical communication with the first electrode when the first electrode is moved between open and closed positions. The conductor can include a contact end which is not in contact with the first electrode when the first electrode is in its open position. In such an open position, the first electrode may not be in electrical communication with the electrical source and, as a result, current may not flow through the first electrode. The first electrode can be moved into its closed position such that the first electrode is in contact with the contact end of the wire. In such a closed position, the first electrode may be in electrical communication with the electrical source allowing current to flow through the first electrode.05-21-2009
20100204697In-Line Vessel Sealer and Divider - An endoscopic forceps includes a housing having a shaft attached thereto, the shaft including a pair of jaw members disposed at a distal end thereof. The forceps also includes a drive assembly disposed in the housing which moves the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are closer to one another for manipulating tissue. A pair of handles is operatively connected to the drive assembly and the handles are movable relative to the housing to actuate the drive assembly to move the jaw members. Each of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy for treating tissue. The forceps also includes a first switch disposed on the housing which is activatable to selectively deliver energy of a first electrical potential to at least one jaw member for treating tissue in a monopolar fashion. A second switch is disposed on the housing and is activatable to selectively deliver energy of a first electrical potential to one jaw member and selectively deliver energy of a second electrical potential to the other jaw member for treating tissue in a bipolar fashion.08-12-2010
20100204698Incorporating Rapid Cooling in Tissue Fusion Heating Processes - An electrode sealing assembly for use with an electrosurgical instrument for sealing tissue includes first and second jaw members which are movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue. The jaw members include electrically conductive sealing plates designed to selectively transmit electrosurgical energy to tissue disposed between the sealing plates. The jaw members also include a thermoelectric cooling plate having a first surface in direct contact with an outer surface of the sealing plate. The thermoelectric cooling plate includes first and second electrical connections on opposite sides of the jaw member. The first connection is configured to selectively transmit a first electrical potential and the second connection is configured to selectively transmit a second electrical potential such that heat generated by the sealing plates is transferred away from the tissue via the thermoelectric cooling plate.08-12-2010
20120136354System and Method for Tissue Sealing - An electrosurgical system is disclosed. The system includes an electrosurgical forceps including first and second jaw members pivotally attached in opposing relation relative to one another, the jaw members relatively movable from a first, open position wherein the jaw members are disposed in spaced relation relative to one another to a second, clamping position wherein the jaw members cooperate to grasp tissue therebetween with a predetermined clamping force, each of the jaw members including an electrically conductive sealing surface. The system also includes an electrosurgical generator configured to operatively couple to the electrosurgical forceps and to supply electrosurgical energy to the electrically conductive sealing surfaces. The electrosurgical generator includes at least one input control configured to record a user-defined setting associated with the electrosurgical energy; at least one sensor configured to measure at least one tissue parameter or at least one electrosurgical energy parameter; and a controller configured to predict a tissue mass of the tissue grasped by the jaw members based on the at least one tissue parameter or at least one electrosurgical energy parameter and to adjust the user-defined setting as a function of the predicted tissue mass.05-31-2012
20120239034Method of Manufacturing Tissue Seal Plates - An end effector assembly includes a pair of opposing jaw members, each jaw member having a jaw housing and a seal plate. The seal plate is associated with the jaw housing and includes an interior surface and an exterior surface. A portion of the exterior surface defines a tissue contacting surface and at least a portion of the interior surface includes a conductive element that is disposed thereon. The conductive element facilitates soldering a wire lead thereto for electrical communication with the seal plate.09-20-2012
20100049194TISSUE FUSION/WELDER APPARATUS AND METHOD - A tissue welding apparatus is adapted to fuse a first piece of tissue to a second piece of tissue which are disposed in a surface proximate relationship. An elongate shaft carries a first jaw, and a second opposing jaw moveable relative to the first jaw. At least one penetrating member is carried by the first jaw and moveable relative to the second jaw to create a channel through the first piece of material and the second piece of material. A source of heat is coupled to the penetrating member for denaturing the tissue defining the channel. This denatured tissue forms a column binding the first piece of tissue to the second piece of tissue. A chemical agent can be carried to the tissue with the penetrating member.02-25-2010
20100010489SURGICAL CLAMP - A novel surgical clamp having a pair of jaws, which may be used to ablate or create leisons in tissue. In embodiment, the jaws have an articulated position wherein the jaws are separated and not parallel to one another, an opened position wherein the jaws are separated and substantially parallel to one another, and a closed position wherein the jaws are adjacent and substantially parallel to one another. One or more of the jaws can articulate independent of the other jaw. Other embodiments are described in the attached specification.01-14-2010
20120221004Apparatus, System, and Method for Performing an Electrosurgical Procedure - The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.08-30-2012
20120259331ELECTRICALLY-INSULATIVE HINGE FOR ELECTROSURGICAL JAW ASSEMBLY, BIPOLAR FORCEPS INCLUDING SAME, AND METHODS OF JAW-ASSEMBLY ALIGNMENT USING FASTENED ELECTRICALLY-INSULATIVE HINGE - An end effector assembly suitable for use with a forceps includes opposing first and second jaw members pivotably mounted with respect to one another. The first jaw member includes one or more pivot holes defined therein configured to receive a portion of a pivot pin therein. The end effector assembly also includes an electrically-insulative hinge configured to electrically isolate the first and second jaw members from one another including one or more pivot-hole locators having an aperture defined therein. The electrically-insulative hinge is attached to the first jaw member such that the one or more pivot-hole locators align with the one or more pivot holes of the second jaw member.10-11-2012
20130172887TREATMENT INSTRUMENT SYSTEM - A treatment system includes: an absorbent member which is arranged to be discharged into the biological tissues as the fusion targets from the first jaw, thermally deformed when the thermal energy is applied thereto; a first energy discharge portion which is configured to discharge the absorbent member toward the second holding surface, and which is configured to supply the high-frequency energy and the thermal energy to the biological tissues; a second energy discharge portion which is configured to come into contact with at least a part of the absorbent member when the absorbent member is discharged, and which is configured to supply the high-frequency energy and the thermal energy to the biological tissues; and a control unit which is configured to control the energy source to supply the thermal energy after discharging the absorbent member to the biological tissues.07-04-2013
20100331837BIPOLAR COAGULATION FORCEPS - A bipolar coagulation forceps with a fixed forceps leg, a pivot support, and a pivoting forceps leg, which can pivot relative to the fixed forceps leg via a pivot element and which is electrically insulated from the fixed forceps leg is provided, with the forceps legs essentially being made from biocompatible metal. The pivot element is likewise essentially made from biocompatible metal and attaches directly to the moving forceps leg. An insulating body electrically insulating the pivot element and the moving forceps leg from the fixed forceps leg is arranged on or fixed to the fixed forceps leg as a pivot support, on which the moving forceps leg is supported by the pivot element.12-30-2010
20120271307Endoscopic Instrument for Tissue Identification - The present disclosure relates to various apparatus, systems and methods of identifying and treating tissue using at least one electrical property of tissue. Provided is a method for identifying and treating tissue, the method including providing a electrosurgical treatment device including an electrode assembly for measuring one or more electrical properties of a target tissue, the electrode assembly being mounted on a distal end thereof, measuring the one or more electrical characteristics of the target tissue, comparing the measured electrical property values of the target tissue against electrical property values of known tissue types, identifying a tissue type of the target tissue, adjusting an energy delivery configuration of the electrosurgical treatment device to the type of target tissue, and activating the electrosurgical treatment device to treat the target tissue.10-25-2012
20100249776Apparatus, System, and Method for Performing an Endoscopic Electrosurgical Procedure - A bipolar forceps includes an end effector assembly having a flexible jaw member and a fixed jaw member. The flexible jaw member has a flange operably coupled to the fixed jaw member about a pivot. A drive assembly is configured to pivot the flexible jaw member relative to the fixed jaw member from a first position and a second position. A handle is movable between an open position when the jaw members are disposed in the first position and a closed position to cause the drive assembly to rotate the flange about the pivot in a second direction to move the jaw members to the second position. A distal end of the flexible jaw member is configured to engage the fixed jaw member prior to a proximal portion of the flexible jaw member upon movement of the jaw members to the second position.09-30-2010
20100185197MEDICAL TREATMENT APPARATUS, TREATMENT INSTRUMENT AND TREATMENT METHOD FOR LIVING TISSUE USING ENERGY - A medical treatment apparatus includes an energy source which applies energy to living tissues, a first treating portion which joins the living tissues together, a second treating portion which is interposed between the living tissues and which removes surface portions of tissues in the joint surfaces of the living tissues, a detecting portion, and a controller. The first treating portion includes at least a pair of holding members having holding surfaces to hold the living tissues, and an energy output unit which is provided on the holding surfaces of the holding members and which join the living tissues together when energy is applied thereto from an energy source. The detecting portion detects biological information regarding the living tissues held by the pair of holding members. The controller controls outputs from the energy output unit in accordance with the biological information regarding the living tissues obtained by the detecting portion.07-22-2010
20100185196MEDICAL TREATMENT APPARATUS, TREATMENT INSTRUMENT AND TREATMENT METHOD FOR LIVING TISSUE USING ENERGY - A medical treatment apparatus includes an energy source, a first treating portion joining the living tissues together, a second treating portion which is interposed between the living tissues and which denatures a joint surface of the living tissues in contact with the second treating portion, a detecting portion, and a controller. The first treating portion includes holding members having holding surfaces to hold the living tissues, and an energy output unit which is provided on the holding surfaces and which join the living tissues together when energy is applied thereto from the energy source. The detecting portion detects at least one of biological information regarding the living tissues held by the pair of holding members and regarding the living tissues between the holding members and the second treating portion. The controller controls an output of the energy output unit and the second treating portion on the basis of the biological information.07-22-2010
20120136353Endoscopic Surgical Forceps - An end effector assembly for an endoscopic surgical instrument includes a pair of jaw members disposed in opposing relation relative to one another. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. Each jaw member defines an arcuate configuration and includes a proximal segment and a distal segment coupled to the proximal segment. The distal segment is moveable with respect to the proximal segment between a use position, wherein the proximal segment and the distal segment cooperate to define the arcuate configuration of the jaw member, and an insertion position, wherein the distal segment is offset relative to the proximal segment to interrupt the arcuate configuration of the jaw member.05-31-2012
20100130977Single Action Tissue Sealer - An endoscopic bipolar forceps includes a housing and a shaft, the shaft having an end effector assembly at its distal end. The end effector assembly includes two jaw members for grasping tissue therebetween. The jaw members are adapted to connect to an electrosurgical energy source which enable them to conduct energy through the tissue to create a tissue seal. A drive assembly is disposed within the housing which moves the jaw members. A switch is disposed within the housing which activates the electrosurgical energy. A knife assembly is included which is advanceable to cut tissue held between the jaw members. A movable handle is connected to the housing. Continual actuation of the movable handle engages the drive assembly to move the jaw members, engages the switch to activate the electrosurgical energy source to seal the tissue, and advances the knife assembly the cut the tissue disposed between the jaw members.05-27-2010
20080215051Laparoscopic Bipolar Electrosurgical Instrument - A laparoscopic bipolar electrosurgical instrument for sealing tissue includes a handle having an elongated tube affixed thereto. The tube includes first and second jaw members having electrically conductive sealing surfaces attached to a distal end thereof which are movable from a first position for approximating tissue to a second position for grasping tissue therebetween. The handle includes a fixed handle and a handle which is movable relative to the fixed handle to effect movement of the jaw members from the first position to the second position for grasping tissue. The jaw members connect to a source of electrosurgical energy such that the opposable sealing surfaces are capable of conducting electrosurgical energy through tissue held therebetween. A stop is included for maintaining a minimum separation distance between opposing sealing surfaces. A ratchet is also included to maintain a closure force in the range of about 7 kg/cm09-04-2008
20110270251Insulated Sealing Plate - An end effector assembly for use with an electrosurgical instrument is provided. The end effector assembly has a pair of opposing jaw members. Each of the jaw members has a support base, an electrical jaw lead, and a sealing plate coupled to the electrical jaw lead. The sealing plate has a stainless steel layer and an electrically insulative layer.11-03-2011
20100016857Variable Resistor Jaw - A bipolar forceps includes an end effector assembly having opposing first and second jaw members each having a proximal end and a distal end. The jaw members are movable relative to each other in order to grasp tissue therebetween. An electrically conductive surface having two or more conductive sealing plates and a dielectric layer is operably coupled to the first jaw member. Each sealing plate is connected to a reactive element and positioned along the electrically conductive surface from the proximal end to the distal end. The reactive element of the sealing plate positioned on the proximal end of the first jaw member has a different impedance than the reactive element positioned on the distal end. An electrically conductive surface having one or more conductive sealing plates is operably coupled to the second jaw member. Each electrically conductive surface on the jaw members connects to a source of electrosurgical energy such that the sealing plates are capable of conducting energy through tissue held therebetween to effect a tissue seal.01-21-2010
20100286691Apparatus, System, and Method for Performing an Electrosurgical Procedure - The present disclosure provides a bipolar forceps. The bipolar forceps includes a housing having a handle assembly including a movable handle and one or more shafts. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. A solenoid is in operative communication with the movable handle and operatively couples to a drive rod operatively coupled to at least one of the first and second jaw members for causing movement thereof. One or both of the first and second jaw members includes one or more teeth configured to engage one or more teeth located on the drive rod such that rotation of the solenoid imparts one of longitudinal and rotational movement of the drive rod such that at least one of the first and second jaw members moves between the open and closed positions.11-11-2010
20130103035Multi-Circuit Seal Plates - An end effector assembly adapted to couple to an electrosurgical instrument, the end effector assembly including a pair of opposing jaw members pivotably attached about a pivot member and moveable from a first spaced position to a second grasping position. Each jaw member includes a jaw housing and a seal plate formed on an inner surface of the jaw member including at least two seal plate segments extending along a substantial portion of the length of the jaw members. An insulating member is positioned between adjacent seal plate segments and configured to provide electrical isolation between adjacent seal plate segments. Each sealing plate segment is adapted to selectively connect to an electrosurgical energy source and form part of an electrosurgical energy delivery circuit.04-25-2013
20120083786Vessel Sealing Instrument - A bipolar electrosurgical instrument includes first and second shafts each having a jaw member extending from its distal end. Each jaw member is adapted to connect to a source of electrosurgical energy such that the jaw members are capable of selectively conducting energy through tissue held therebetween. A knife channel is configured to reciprocate a cutting mechanism therealong. An actuator selectively advances the cutting mechanism. A switch is disposed on the first shaft and is configured to be depressed between a first position and at least one subsequent position upon biasing engagement with a mechanical interface disposed on the second shaft. The first position of the switch relays information to the user corresponding to a desired pressure on tissue and the at least one subsequent position is configured to activate the source of electrosurgical energy to supply electrosurgical energy to the jaw members.04-05-2012
20120083785Vessel Sealing Instrument - A bipolar electrosurgical instrument is provided. The bipolar electrosurgical instrument includes first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof for effecting movement of the jaw members relative to one another. A first conductive lead is adapted to connect to a first electrical potential and a second conductive lead is adapted to connect to a second electrical potential. One of the first and second conductive leads extends through the pivot to connect to a respective jaw member.04-05-2012

Patent applications in class With forceps or tweezers