A surgical clip applier is disclosed which is configured to automatically feed a clip from a clip cartridge once the surgical clip applier is positioned in the patient.

An irreversible electroporation and radio frequency ablation (IRE/RFA) generator incudes an IRE pulse generator, harmonic filtration circuitry, and a waveform interleaver. The IRE pulse generator is configured to generate biphasic IRE pulses. The harmonic filtration circuitry is configured to convert the IRE pulses into an RF signal. The waveform interleaver, which is configured to receive the IRE pulses and the RF signal and generate an IRE/RFA output signal by interleaving in alternation one or more of the IRE pulses with one or more periods of the RF signal.

A method for controlling an output of an energy module of a modular energy system. The energy module can comprise a plurality of amplifiers configured to generate a drive signal at a frequency range and a plurality of ports coupled to the plurality of amplifiers. The method includes determining to which port of the plurality of ports the surgical instrument is connected, selectively coupling an amplifier of the plurality of amplifiers to the port of the plurality of ports to which the surgical instrument is connected, and controlling the amplifier to deliver the drive signal for driving the energy modality to the surgical instrument through the port.

An electrode assembly includes an electrode pair including a first electrode and a second electrode configured to be selectively energized for delivery of electroporation therapy. The electrode assembly also includes an expandable isolation member disposed axially between the first electrode and the second electrode. One of the first electrode and the second electrode is positioned proximally of a proximal end of the expandable isolation member and the other of the first electrode and the second electrode is positioned distal to a distal end of the expandable isolation member. The expandable isolation member is configurable between a collapsed configuration and an expanded configuration. The expandable isolation member includes a circumferential sealing surface configured for sealing engagement with tissue of a patient such that the expandable isolation member inhibits fluid and electrical communication between the first electrode and the second electrode when engaged with the tissue.

An energy generator includes a connector port configured to couple to an electrosurgical instrument including an electrode having a polymeric dielectric coating; a power converter configured to generate energy; and a sensor coupled to the power converter and configured to sense a parameter of the energy. The energy generator also includes a controller coupled to the sensor and the power converter. The controller is configured to: control the power converter to output energy to modify an electrical property of the polymeric dielectric coating; and determine whether the electrical property of the polymeric dielectric coating has been sufficiently modified by the energy.

A surgical clip applier comprising an electric motor system is disclosed. The electric motor system is configured to drive one or more drive systems of the surgical clip applier. The surgical clip applier comprises a control system configured to control the electric motor system. The control system is configured to monitor a parameter of the electric motor system to assess the operation of the one or more drive systems. In at least one instance, the control system monitors the electric current drawn by an electric motor and adapts the operation of the electric motor based on the electric current being drawn by the motor. The control system slows the electric motor down when the electric current drawn by the electric motor exceeds a threshold. The control system modulates the width, or duration, of voltage pulses applied to the electric motor to control the speed of the electric motor.

The current invention concerns a catheterization system For performing an Interventional ablation procedure comprising: a flexible guiding catheter comprising a distal end for Insertion and a proximal end for manipulation, the distal end of the guiding catheter transformable from a substantially elongated shape for passage within the vasculature into a contact shape for contacting internal tissue along a continuous band, the flexible guiding catheter comprising a guiding lumen, and a flexible ablation catheter comprising an ablation tip near a distal end, the ablation catheter insertable or inserted into the guiding lumen of the guiding catheter, characterized In that the guiding catheter comprises a continuous slit at or near the distal end of the guiding catheter, said silt arranged such that, when the distal end of the guiding catheter is in said contact shape and contacts internal tissue along a continuous band, the silt defines a functional opening between the guiding lumen and the internal tissue along said continuous band, through which slit said ablation tip is capable of ablating said internal tissue along said continuous band. The Invention further concerns a guiding catheter and an interventional ablation procedure.

A circuit for generating a radio-frequency signal for a surgical device is disclosed. The circuit has a voltage regulator that supplies direct current (DC) voltage, a first MOSFET, a second MOSFET, and a MOSFET driver. The MOSFET driver receives the DC voltage supplied from the voltage regulator and has a local oscillator. The local oscillator switches the first MOSFET and the second MOSFET on and off at a frequency generated by the local oscillator. The circuit further includes a transformer connected to the first and second MOSFETs, having a center tap and a main voltage applied at the center tap, and providing an alternating current (AC) output.

A surgical assembly and system are disclosed for use in performing a surgical procedure on a patient. The assembly comprises a surgical tool, the tool being arranged to receive a first signal for use in cutting or cauterizing tissue of the patient during the surgical procedure and an electrode disposed upon the tool. The assembly further comprises an electrical generator communicatively couplable with the electrode, for generating a second signal for use in generating an electrical field from the electrode proximate a site of the surgical procedure, for removing particles suspended proximate the surgical site. The assembly further comprises a controller for controlling the application of the second signal to the electrode, a sensing arrangement for sensing an activation status of the first signal, the sensing arrangement being communicatively coupled with the controller and arranged to output a sensing signal to the controller in dependence of the activation status of the first signal. The controller is arranged to enable the application of the second signal to the electrode upon receiving a sensing signal representative of an activation of the first signal. An electrode assembly comprising a plurality of electrically conductive elements for use with a surgical tool is also disclosed.

Disclosed is a multifunctional medical device, apparatus or system that is capable of performing a surgical procedure or operation and also capable of removing or reducing smoke particles generated by the surgical procedure or operation on a subject, the apparatus comprising a plurality of electrodes, two of which are configured to be in electrical communication with or being electrically connectable to opposite poles of a source of high voltage dc electricity to ionize, and remove or reduce smoke particles, and at least one of which is also configured to be part of a RF circuit to perform a surgical procedure or operation such as tissue cutting, cauterization, tissue sealing or coagulating at a surgical site on the subject. Also disclosed is a method of employing the above disclosed device, apparatus or system or variations thereof to perform a surgical procedure or operation at a surgical site and to remove or reduce smoke particles generated during the surgical procedure or operation.