20 results about "Bipolar electrosurgery" patented technology

Bipolar electrosurgical forceps are provided with dual irrigating tubes that deliver irrigating liquid to the opposed surfaces of the tips of the forceps to prevent the sticking of body tissue to the tips. To reduce the manufacturing costs of the forceps and enable the forceps to be single use, disposable forceps, each tube of the dual irrigating tools is a plastic tube adhered along one of the opposing surfaces of the pair of forceps arms. Each tube also has a flat nozzle at the distal end of the tube that disburses irrigating liquid across the opposed surfaces of the forceps arm distal and tips.

The present application provides a system for detecting a rupture of an insulating sheath in a bipolar electrosurgical instrument, the system comprising: a first pulse detection circuit for detecting a first high frequency (HF) signal component of an HF signal conducted on a lead of the bipolar instrument; a second pulse detection circuit for detecting a second HF signal component of the HF signal conducted on a conductive shield surrounding the lead; magnitude difference sampling logic for generating a sampled value indicating a magnitude difference between the first HF signal component and the second HF signal component; and current detection logic for detecting a current between the shield and anatomical tissue based on the sampled value.

Bipolar electrosurgical devices and methods of use for cutting tissue, for example, in endoscopic urology and gynecology procedures. The electrosurgical device can comprise a handle and a small diameter, elongated shaft adapted for introduction through a working channel of an endoscope. The working end of the device has a form of loop electrode that is extendable outward from the shaft, a selected dimension for cutting tissue at a selected depth.

An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio / visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.

A bipolar electrosurgical devices and methods of use for coagulation and ablation of tissue in a fluid-immersed working space is disclosed. The bipolar electrosurgical device can comprise a handle and an elongated shaft coupled to the handle. The bipolar electrosurgical device can further comprise a bipolar electrode arrangement and a return electrode. The bipolar electrode arrangement and the return electrode can be electrically insulated from one another. The bipolar electrosurgical device can further comprise an adjusting member carried by the elongated shaft. Movement of the adjusting member from a first position toward a second position can contemporaneously increase an effective surface area of the active electrode and decrease an effective surface area of the return electrode.

Bipolar electrosurgical devices and methods of use for cutting, ablating, or coagulating tissue, for example, in endoscopic gynecology procedures.

An auxiliary return system for use with a bipolar electrosurgical device includes a tissue guard defining an open proximal end, an open distal end, and a lumen extending therethrough between the open proximal end and the open distal end. A ground plate is disposed along an inner peripheral surface of the lumen and is operably coupled to a first end of a ground wire extending from the tissue guard. A coupling is included having a bore defined therein for receiving a cable from an electrosurgical device therethrough, the cable including active and ground leads. The coupling has a flange extending therefrom defining a receptacle therein configured to operably receive a plug connected to a second end of the ground wire. The receptacle is configured to provide electrical continuity between the ground lead disposed within the cable and the plug coupled to the ground wire which, in turn, provides electrical continuity to the ground plate.

Bipolar electrosurgical instrument (1) comprising an articulating end (2) comprising a support link (10), and two tips (21, 22) comprising an electrically conductive body, said two tips being articulated to the support link (10) and movable towards / away from each other; wherein: said support link (10) comprises a multilayered structure comprising two electrically conductive bodies (11, 12) and at least one electrically insulating body (20) therebetween, each electrically conductive body (11, 12) of the support link comprising a support portion (13, 14) thereof which receives a respective tip (21, 22) in electrical conductive communication therewith, defining a first conductive outward path and a second, distinct, conductive return path through the electrically conductive bodies of the tips (21, 22) and the support link (10); said support link (10) defines two rotational joints (PJ, DJ) having mutually orthogonal axes (P-P, Y-Y), wherein each rotational joint of said two rotational joints comprises the multilayered structure with the electrically insulating body (20) interposed between the two electrically conductive bodies (11, 12).

An electrosurgical system includes an electrosurgical generator configured to output electrosurgical energy to an electrosurgical device for application to tissue. The electrosurgical generator is configured to determine a condition of contact between at least one electrode of the electrosurgical device and tissue or a surgical technique of using the electrosurgical device and to control the electrosurgical energy output by the electrosurgical generator based on the determined condition or surgical technique.

An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio / visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.

Bipolar electrosurgical devices and methods of use for cutting tissue, for example, in endoscopic urology and gynecology procedures. The electrosurgical device can comprise a handle and a small diameter, elongated shaft adapted for introduction through a working channel of an endoscope. The working end of the device has a form of loop electrode that is extendable outward from the shaft, a selected dimension for cutting tissue at a selected depth.

The invention relates to rupture detection in a bipolar electrosurgical instrument sheath. The present application provides a system for detecting a rupture of an insulating sheath in a bipolar electrosurgical instrument, the system comprising: a first pulse detection circuit for detecting a first high frequency (HF) signal component of an HF signal conducted on a lead of the bipolar instrument; a second pulse detection circuit for detecting a second HF signal component of the HF signal conducted on the conductive shield surrounding the lead; a magnitude difference sampling logic to generate a sampled value indicative of a magnitude difference between the first HF signal component and the second HF signal component; and current detection logic to detect a current between the shield and the anatomical tissue based on the sampled values.

Various embodiments provide an elongate structure for delivery of bipolar energy. The elongate structure is for use in an electrosurgical device. The elongate structure comprises: one or more insulator strands; a first conductive strand configured to provide an elongate first electrode; and, a second conductive strand configured to provide an elongate second electrode. The first conductive strand is electrically isolated from the second conductive strand by the one or more insulator strands. The first electrode and second electrode are configured to deliver bipolar energy into biological tissue. Some other embodiments provide a bipolar electrosurgical device comprising the elongate structure, and an electrosurgical system comprising the bipolar electrosurgical device.

Bipolar electrosurgical wand for treating tissue along a patient's airway. The wand includes a tubular end effector having, at its distal end, an electrical insulation spacer, a return electrode, and an active electrode. The active electrode includes an annular portion and a tip projection extending distally therefrom. The annular portion may be coextensive with the insulation spacer, and the tip projection may extend distally beyond the most distal surface of the insulation spacer. The tip projection and the annular portion may both share a continuous upper planar surface. The annular portion includes a suction opening for removing tissue debris from the target site.

A bipolar electrosurgical instrument (1) comprising an articulated end (2) comprising a support link (10) and two ends (21, 22) comprising an electrically conductive body, said ends being articulated to the support link (10) and being movable towards / away from each other; wherein: said support link (10) comprises a multilayer structure comprising two electrically conductive bodies (11, 12) and at least one electrically insulating body (20) therebetween, each electrically conductive body (11, 12) of the support link comprising a support portion (13, 14) thereof receiving a respective end (21, 22) in electrically conductive communication therewith, a first outward conductive path and a second separate conductive return path passing through the conductive body of the ends (21, 22) and the support link (10); the support link (10) defines two rotational joints (PJ, DJ) having mutually orthogonal axes (P-P, Y-Y), where each of the two rotational joints comprises a multilayer structure, where an electrically insulating body (20) is interposed between two electrically conductive bodies (11, 12).

A bipolar electrosurgical wand for treating tissue along a patient airway. The wand includes a tubular end effector with an electrically insulative spacer, a return electrode, and an active electrode at its distal end. The active electrode defines a planar top surface, which includes a proximal portion and a tip projection extending directly distally therefrom. The tip projection may include bilateral linear side surfaces, symmetrical about a longitudinal axis of the active electrode. The wand may also include a fluid delivery aperture and a fluid delivery cavity ramp, to direct fluid towards the active electrode for a range of wand orientations.

A bipolar surgical instrument (1) comprises a body (2), first and second opposed jaws (18, 20) located at the distal end of a shaft (10), the first jaw (18) being movable with respect to the second jaw (20) between an open position in which the first and second jaws (18, 20) are spaced apart from one another, and a closed position in which the first and second jaws (18, 20) are adjacent one another. The first and second elongate jaw members (18, 20) have respective first and second electrodes. A controller is operable to determine a mode of operation depending upon a measurement of impedance between the first and second jaws.

An electrosurgical system includes an electrosurgical generator configured to output electrosurgical energy to an electrosurgical device for application to tissue. The electrosurgical generator is configured to determine a condition of contact between at least one electrode of the electrosurgical device and tissue or a surgical technique using the electrosurgical device, and to control electrosurgical energy output by the electrosurgical generator based on the determined condition or surgical technique.

An electrosurgical device is provided that includes a handset having a shaft extending therefrom, a pair of active electrodes at a distal end of the shaft, and a movable, electrically floating electrode selectively positionable between the active electrodes. The floating electrode, when positioned to contact tissue between the active electrodes, modifies the electrosurgical current flows through tissue. The resultant modified current flows enables a surgeon to more effectively to control tissue desiccation by focusing electrosurgical energy toward targeted tissue and by reducing peripheral current flows. Embodiments are provided wherein the active electrodes include cooling provisions. Related electrosurgical systems and method of use are also provided.