A surgical instrument is disclosed, which is configured to be releasably connectable to a hand-piece. The surgical instrument includes electrical contacts configured to be electrically connected to the hand-piece. The surgical instrument further includes a sealing member having sealing elements. At least one sealing element of the plurality of sealing elements is formed of an elastomeric material and is configured to form a seal around one the electrical contacts when the surgical instrument is connected to the hand-piece, such that the electrical contact is electrically isolated from other electrical contacts on the surgical instrument. At least one sealing element is configured such that a force required to connect the surgical instrument to the hand-piece is not reliant on a bulk compression of the elastomeric material.

A system for hepatic nerve denervation includes a medical device and a generator in communication with the medical device. The medical device includes an elongate body having a proximal portion and a distal portion opposite the proximal portion, and a plurality of treatment electrodes coupled to the distal portion. The distal portion is configured to be in contact with an area of target tissue. The area of target tissue is an area of tissue within the hepatic artery. The generator is configured to generate and deliver at least one pulse train of energy to the plurality of treatment electrodes to ablate the area of target tissue.

Systems and methods for electroporation are provided. An electroporation system includes a catheter including a plurality of electrodes, and a pulse generator coupled to the catheter, the pulse generator configured to generate a waveform to be delivered using at least one of the plurality of electrodes. The waveform includes a first pulse having a first polarity, a first pulse amplitude, and a first pulse width, and a second pulse having a second polarity, a second pulse amplitude, and a second pulse width, wherein the first and second pulses are separated by an interpulse delay, and wherein at least one of i) the first pulse amplitude is different than the second pulse amplitude and ii) the first pulse width is different than the second pulse width.

A robotic system includes an electrosurgical instrument having an instrument housing having a shaft with an end effector assembly and first and second jaw members attached thereto movable to grasp tissue. An input is configured to move the jaw members and is configured to operably couple to a torque sensor that measures the torque of the input during rotation thereof. A handle is remotely disposed relative to the instrument housing and is configured to communicate with the input for controlling the movement of the jaw members. A housing having a lever operably coupled thereto, houses components therein configured to operably connect to the input such that movement of the lever correlates to movement of the jaw members. The components are configured to regulate the resistance of the lever in response to the feedback from the torque sensor.

A handheld cold plasma device in which the device includes power source, control electronic circuit boards connected to high-frequency high-voltage transformers, user control panels, insulating case covering control electronic circuits, high-frequency high-voltage transformer and user control panel to form a monoblock, the plasma generating unit contains the active electrode and the passive electrode outside the housing to allow the user to be connected to the neutral wires of the device. The device according to the present disclosure uses the principle of direct discharge (or dielectric barrier discharge with floating electrodes) with small size, inexpensive and does not use consumable materials.

A method for use with an intra-body probe, a distal end of which includes an ablation electrode and a temperature sensor, is described. While (i) the ablation electrode is driving an ablating current into tissue of a subject, and (ii) fluid is passed from the distal end of the intra-body probe at a fluid-flow rate, a processor receives a temperature sensed by the temperature sensor. The processor estimates a temperature of the tissue, based at least on the sensed temperature and at least one parameter selected from the group consisting of: the fluid-flow rate, and a parameter of the ablating current. The processor generates an output in response to the estimated temperature. Other embodiments are also described.

One aspect of the present disclosure is a medical treatment tool including a first arm having a first end and a second end and a second arm having a first end and a second end, wherein the first end of the first arm and the first end of the second arm are coupled such that a distance between the second end of the first arm and the second end of the second arm is adjustable. Each of the first arm and the second arm comprises: a conductor extending from the first end to the second end and exposed at the second end; a support containing a composite material made of a resin and a reinforcing material as a main component and extending along the conductor; and a cover covering the conductor and the support.

An electrosurgical instrument for use in a robotic surgical system includes an electrosurgical end effector, a housing configured to be operably coupled to an instrument drive unit, a shaft extending distally from the housing, and a wrist assembly coupled to a distal end portion of the shaft. The wrist assembly includes a first pivot member and a second pivot member having a proximal end portion movably coupled to the first pivot member, and a distal end portion configured to be coupled to the end effector. The first pivot member has a pair of first and second distally-extending arms each defining a first groove configured to receive and guide a cable.

The invention generally relates to systems and methods for therapeutically modulating nerves in or associated with a nasal region of a patient for the treatment of a rhinosinusitis condition.

According to some embodiments, a medical instrument comprises an elongate body having a proximal end and a distal end and a pair of electrodes or electrode portions (for example, a split-tip electrode assembly). Systems and methods are described herein that perform contact sensing and/or ablation confirmation based on electrical measurements obtained while energy of different frequencies are applied to the pair of electrodes or electrode portions. The contact sensing systems and methods may calibrate network parameter measurements to compensate for a hardware unit in a network parameter measurement circuit or to account for differences in cables, instrumentation or hardware used.