Abstract: A forceps including a gripping assembly. The gripping assembly includes an upper jaw and a lower jaw. The upper jaw includes a proximal end and a distal end. The upper jaw includes an upper tooth having an upper proximally facing canted tooth surface and an upper distally facing canted tooth surface. The lower jaw includes a proximal end and a distal end. The lower jaw includes a socket having a lower distally facing canted socket surface and a lower proximally facing socket surface. The upper jaw, the lower jaw, or both are moveable so that the gripping assembly moves between an open position and a gripping position, in the gripping position, a gap is defined between the upper distally facing canted tooth surface and the lower proximally facing socket surface.

Abstract: The disclosure is directed to an electrosurgical generator comprising: an electromagnetic signal supply unit for generating electromagnetic, EM, energy to be conveyed along each of a plurality of channels. Each of the plurality of channels is arranged to convey electromagnetic energy at a different frequency. The electrosurgical generator further comprises an output port selectively connectable to each of the plurality of channels. The output port is connectable to an electrosurgical instrument for delivering the electromagnetic energy to biological tissue. The electrosurgical generator further comprises a tissue identification unit comprising a controller configured to: detect a signal indicative of a load impedance at the output port; determine a set of complex impedance values from the detected signals; identify a tissue type from the set of complex impedance values; and generate an output for communicating the identified tissue type to a user.

Abstract: An electrosurgery handpiece/pencil with smoke evacuation having features that support use at high frequencies without insulation breakdown and that provides increased efficiency of smoke evacuation during cutting and/or coagulation. The electrosurgery handpiece/pencil with smoke evacuation includes a handpiece and a planar platform located near a top of the handpiece where the planar platform has a recessed area and/or a rectangular shaped area in communication with a plurality of channels.

Abstract: A medical device capable of improving handling properties and maintaining excellent insulation properties of conductive wires for supplying electricity to electrodes for performing treatment includes: an elongated shaft part having a guide wire lumen formed therein, the guide wire lumen being open at a distal part; a plurality of electrodes which are disposed on the distal side of the shaft part, extend in the longitudinal direction of the shaft part, and are deformable in the radial direction of the shaft part; and a plurality of conductive wires which extend from the proximal side of the shaft part to the distal side thereof and transfer electricity to an electrode layer. The conductive wires extend inside the electrodes and outside the guide wire lumen, and are electrically connected to the electrodes at the distal side of the electrodes.

Abstract: An electrosurgical system may include a medical delivery device and an electrosurgical device to perform an electrosurgical procedure. The electrosurgical device may have a monopolar configuration. An outer surface of the medical delivery device may include a conductive portion that is part of a return path for a bipolar configuration. Current may be supplied through an active member of the electrosurgical device to perform the procedure. After passing through tissue, the current may be drawn to the electrode portion of the medical delivery device to complete the circuit.

Abstract: A vascular closure device seals a vascular access site upon completion of a procedure wherein a blood vessel has been punctured to accommodate a guidewire, an introducer sheath, and other intravascular devices. The device uses compression and thermal heating of an area around the puncture to obtain immediate hemostasis. Electrothermal bipolar vessel sealing is preferably employed, wherein a forceps grasps and compresses tissue from opposite sides of the puncture and then applies a high-frequency alternating electric current to cause the vessel wall between the forceps to denature and seal.

Abstract: An example medical device is disclosed. The medical device includes a catheter shaft including a distal end portion, wherein the distal end portion includes an ablation assembly. The ablation assembly includes an expandable frame including a base, an end region and a plurality of struts extending between the base and the end region, the struts defining a plurality of apertures along the frame. The ablation assembly also includes an electrical circuit coupled to an inner surface of the second end region of the frame, the electrical circuit including a plurality of ablation electrodes coupled thereto. Further, the expandable frame is designed to shift from a delivery configuration in which the ablation electrodes face inward from the inner surface of the expandable frame to an expanded configuration in which the ablation electrodes face away from the base of the expandable frame.

Abstract: A bipolar electrosurgical fusion/sealer and dissector is provided that is arranged to simultaneously fuse and cut tissue captured between jaws of the instrument. The jaws include particularly positioned, shaped and/or oriented electrodes along with a compressible landing pad to perform the simultaneous fusion and cutting of tissue. An electrosurgical generator is arranged to supply RF energy through the instrument and monitors a phase angle of the supplied RF energy and adjusts or terminates the supplied RF energy based on the monitored phase angle to optimally fuse and dissect the tissue.

Abstract: A medical device for tissue ablation may include a catheter shaft, an expandable member disposed on or coupled to the catheter shaft, and a plurality of elongate electrode assemblies each constructed as a flexible circuit. The expandable member may be configured to shift between an unexpanded configuration and an expanded configuration. The plurality of electrode assemblies may be disposed on an outer surface of the expandable member. Each of the plurality of electrode assemblies may include a temperature sensor aligned with two or more electrodes.

Abstract: A return pad of an electrosurgical system is disclosed. The return pad includes a plurality of conductive members and a plurality of sensing devices. The conductive members are configured to receive radio frequency current applied to a patient. The sensing devices are configured to detect at least one of the following: a nerve control signal applied to the patient; and a movement of an anatomical feature of the patient resulting from application of the nerve control signal.

Abstract: A control device includes a processor configured to: execute a sealing control mode in which electrical power to seal a living tissue by heating the living tissue at a first temperature is supplied, and an incision control mode in which electrical power to incise the living tissue by heating the living tissue at a second temperature higher than the first temperature is supplied; calculate elapsed time, as an index value, since it has reached the second temperature by executing the incision control mode; compare the index value and a threshold; determine a residual heat level of an end effector based on a result of comparison between the index value and the threshold; and perform, based on a determination result of the residual heat level, at least one of: notification of information indicating a warning from a notifying unit; and adjustment of electrical power supplied to the end effector.

Abstract: A substantially planar elongate cutting blade (70) for a bipolar surgical instrument (1) is disclosed. The cutting blade has first and second opposed edges and defining a longitudinal axis, and comprises a proximal end region which extends between the first and second edges over a first distance in a direction perpendicular to the longitudinal axis, and a distal end region defining a cutting surface which extends between the first and second edges over a second distance in a distance perpendicular to the longitudinal axis, the first distance being greater than the second distance. The first and second edges have respective portions that extend at first and second acute angles respectively with respect to the longitudinal axis, and the cutting surface extends transversely at a third angle with respect to the longitudinal axis, the third angle being not equal to the first or second angle.

Abstract: A jaw assembly includes an electrically-conductive tissue-engaging structure, a jaw member including a support base, and a non-electrically conductive member including a first portion configured to engage the electrically-conductive tissue-engaging structure and a second portion configured to engage the support base of the jaw member. The non-electrically conductive member adapted to electrically isolate the electrically-conductive tissue-engaging structure from the jaw member. The electrically-conductive tissue-engaging structure and the non-electrically conductive member cooperatively define a longitudinally-oriented knife channel therethrough.

Abstract: A method, including performing an ablation of tissue using a first high RF power for a short duration, suspending RF power for a predetermined period, and using a second high RF power for a short duration forming lesions with greater surface area and greater depth through resistive heating and thermal latency. High RF power may range between 75-95 W and short duration may range between 4-5 seconds.

Abstract: A catheter comprises a shaft, an extended shaft portion, and an electrode disposed on an outer circumferential surface of the shaft. The shaft has a first lumen and a second lumen that is arranged adjacent to the first lumen. The extended shaft portion is provided on a distal end portion of the shaft, has the first lumen, and has a distal end portion located on a distal end side of a distal end portion of the second lumen, in the shaft.

Abstract: Electroporation-based therapies (EBTs) employ high voltage pulsed electric fields (PEFs) to permeabilize tumor tissue, resulting in changes in passive electrical properties detectable using electrical impedance spectroscopy (EIS). Currently, commercial potentiostats for EIS are limited by impedance spectrum acquisition time (˜10 s); this timeframe is much larger than pulse periods used with EBTs (˜1 s). Fourier Analysis SpecTroscopy (FAST) is introduced as a methodology for monitoring tissue inter-burst impedance (diagnostic FAST) and intra-burst impedance (therapeutic FAST) during EBTs. FAST is a rapid-capture (<<1 s) technique which enables monitoring of inter-burst and intra-burst impedance during EBTs in real-time. FAST identified a frequency which delineates thermal effects from electroporation effects in measured impedance. Significance: FAST demonstrates the potential to perform EIS, in addition to intra-burst impedance spectroscopy, using existing pulse generator topologies.

Abstract: Disclosed are methods of transseptal crossing to permit introduction of large bore catheters into to the left atrium, such as to deploy left atrial appendage closure devices or to repair or replace a mitral valve. The method may include the steps of providing a single pass, large bore transseptal crossing system, having a tubular access cannula and an energy delivery wire movably extending through the tubular access cannula. A first electrode tip on the energy delivery wire is brought into contact with a fossa ovalis and energized. The energy delivery wire and cannula are advanced into the left atrium. A large bore sheath is advanced directly over the access cannula and into the left atrium. The cannula and energy delivery wire are removed, and a large bore index procedure catheter may be advanced through the large bore sheath and into the left atrium.

Abstract: An actuator for use in a surgical instrument, the actuator includes an upper portion configured to be actuated by one or more fingers, wherein the upper portion has an upper distal portion for operating the surgical instrument in a first mode of operation, and an upper proximal portion for operating the surgical instrument in a second mode of operation, and wherein the upper distal portion and the upper proximal portion have different respective tactile configurations for informing the user of the first and second modes of operation, respectively.

Abstract: Methods of using hardware (e.g., bone screws, anchors or other devices) previously inserted within the body to facilitate energy delivery are disclosed. The energy delivery (e.g., thermal energy) may be used for neuromodulation (such as stimulation or denervation), tissue heating and ablation, curing, and other applications in the spine and non-spine orthopedic locations.

Abstract: A catheter adapted or high density mapping and/or ablation of tissue surface has a distal electrode array with offset spine loops, each spine loop having at least a pair of linear portions and a distal portion connecting the pair of linear portions, and one or more electrodes on each linear portion. The linear portions of the plurality of offset spine loops are arranged in-plane a single common plane, and the distal portions of the plurality of offset spine loops are arranged off-plane from the single common plane.