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.

An improved electrosurgical instrument, specifically a scissor style vessel sealer, comprising two overmoulded jaws formed from a structural polymer held in place by a pivot pin. The moulded structural polymer replaces many metal components which would otherwise be required for such an assembly. Additionally, reinforcement members can be positioned within the jaws of the instrument to provide support. Not only does the use of the moulded structural polymer simplify the assembly of the instrument, it also enables the following additional functionality: moulded pivot holes, flanges providing lateral support, and a flexible lever arm which is designed to provide the force needed to clamp and seal vessels.

An image analysis device is capable of outputting evaluation information for use in the balloon catheter treatment for subjects, in real time during a procedure using a balloon catheter. The image analysis device includes: an input unit configured to input captured image data of a two-dimensional captured image of a balloon catheter inserted into an organ of the subject and pressed against an inner surface of the organ; a processing unit configured to obtain evaluation image data of the two-dimensional evaluation image, by executing an image processing on the captured image based on the captured image data input by the input unit, and configured to obtain evaluation information regarding a state of the balloon catheter pressed against the inner surface of the organ based on the evaluation image data; and an output unit configured to output the evaluation information acquired by the processing unit.

An end effector assembly of a surgical system includes a blade and a jaw member movable relative to the blade between a spaced-apart position and an approximated position for clamping tissue. The blade defines a first width and the jaw member defines a second width wider than the first width. The jaw member defines a first side facing the blade and a second side facing away from the blade. A marking is formed on the second side of the jaw member facing away from the blade. The marking defines a third width substantially equal to the first width of the blade to allow a surgeon to visualize a width of the blade when the blade is not visible.

A power generator (22) according to the invention is configured in a self-oscillating manner. It comprises two cascode circuits (31, 32), the outputs (A1, A2) of which are connected with a parallel resonant circuit (23) in order to excite it in push-pull manner. The input transistors (33, 35) of cascode circuits (31, 32) are cross-coupled, whereas the control electrodes of the output transistors (34, 36) are connected with non-varying potential. The power oscillator (22) is self-controlled such that the transistors (33-36) comprise lowest switching losses.

Systems, methods and devices for surgical procedurelization via a modular energy system are disclosed herein. In various aspects, the systems, methods and devices include an energy module, a header module communicably coupled to the energy module, and a display screen capable of rendering a graphical user interface (GUI). The GUI may be configured to display a plurality of steps that correspond with actions performed by a user while operating the modular energy system. In some aspects, the steps displayed are steps of a predetermined procedural checklist corresponding with a mental model followed by the user while performing a surgical procedure. In some aspects, the steps displayed are steps of an output verification process.

Mitigating a user interface display function of a modular energy system includes receiving formatted video data at a video data converter circuit, providing differential video signaling data to the display from the video data converter circuit, providing a copy of the differential video signaling data to a processor, and determining that the differential video signaling data is changing over time. Mitigating erroneous outputs from an isolated interface includes receiving a state of a first switch of a first footswitch coupled to a first comparator and a reference voltage coupled to the first comparator, receiving the state of the first switch coupled to the first duplicate comparator and the reference voltage coupled to the first duplicate comparator, comparing the output of the first comparator with the output of the first duplicate comparator, and determining activation or deactivation of a surgical instrument coupled to the controller based on the comparison.

A modular energy system is disclosed including a header module including an enclosure and a display including a coupler. The enclosure defines a recess. The recess includes a first guidewall and a second guidewall. The coupler is removably positionable in the recess. The coupler includes a first sidewall and a second sidewall. The first guidewall is configured to guide the first sidewall as the coupler moves through the recess. The second guidewall is configured to guide the second sidewall as the coupler moves through the recess.

Electrosurgical handheld devices are used mainly for endoscopic applications in urology or in gynaecology. However, the field of use of these instruments is not limited to these regions of the human body and instead also includes the treatment of further organs in the lower part of the human abdomen. The invention makes available an electrosurgical handheld device and also a handle, a main body and an adapter, which are particularly easy and cost-effective to produce and which at the same time ensure a laminar flow of the irrigation liquid at the distal end of the handheld device. This is achieved by the fact that a feedthrough extending through a handle is funnel-shaped, wherein a cross section of the feedthrough tapers from a distal side to a proximal side of the handle.

A surgical instrument includes a jaw tool with two branches that can be closed for grasping tissue. In order to transmit the closing force to at least one branch, the branch is coupled with a preferably manually actuatable pull/push element, and, for coupling, an actuating pin that supports a sleeve interacts via the sleeve with a coupling track, in which case the sleeve rolls off the coupling track. In this manner, any deformation, abrasion or burr formation on the coupling track is prevented to such an extent that, even after numerous closing movements of the branches, the branches can still be actuated unimpaired by any wear of the coupling track and the actuating pin, respectively.