A radio-frequency ablation instrument (100) and a control method and a control apparatus (30) thereof, a system, an electronic device (90) and a storage medium are provided. The control method includes: acquiring at least one current ablation parameter (S701); calculating a power value needed to be outputted in a next cycle according to the current ablation parameter (S702); acquiring an input control voltage corresponding to the power value according to the power value needed to be outputted (S703); and controlling the radio-frequency energy output according to the input control voltage (S704).

This invention relates to high-frequency ablation of tissue in the body using a cooled high-frequency electrode connected to a high frequency generator including a computer graphic control system and an automatic controller for control the signal output from the generator, and adapted to display on a real time graphic display a measured parameter related to the ablation process and visually monitor the variation of the parameter of the signal output that is controlled by the controller during the ablation process. In one example, one or more measured parameters are displayed simultaneously to visually interpret the relation of their variation and values. In one example, the displayed one or more parameters can be taken from the list of measured voltage, current, power, impedance, electrode temperature, and tissue temperature related to the ablation process. The graphic display gives the clinician an instantaneous and intuitive feeling for the dynamics and stability of the ablation process for safety and control. This invention relates to monitoring and controlling multiple ground pads to optimally carry return currents during high-frequency tissue ablation, and to prevent of ground-pad skin burns. This invention relates to the use of ultrasound imaging intraoperatively during a tissue ablation procedure. This invention relates to the use of nerve stimulation and blocking during a tissue ablation procedure.

A system including a sensored ablation probe tip and a virtual stent, said sensored ablation probe tip for use in a tooth bud ablation procedure that results in tooth agenesis, said sensored ablation probe tip for use with an ablation probe unit. A system including a sensored ablation probe tip and a stent, said sensored ablation probe tip for use in a tooth bud ablation procedure that results in tooth agenesis, said sensored ablation probe tip for use with an ablation probe unit.

Thermal cutting surgical instruments incorporate a blade incorporating a first substrate of high thermal conductivity material in the heated portion of the blade and a support and, the first substrate of high thermal conductivity material joined to a second substrate of low thermal conductivity material in the support region of the blade; an electrically insulative dielectric layer disposed on the first surface of the first substrate and on the first surface of second substrate; an electrically resistive heating element disposed on the electrically insulative dielectric; electrically conductive power leads and electrically conductive sense leads disposed on the electrically insulative dielectric layer and that are in electrical communication with the electrically resistive heating element; and an electrically insulative dielectric overcoat layer disposed on the electrically resistive heating element and on the distal portion of the electrically conductive power leads and electrically conductive sense leads.

Catheter systems, tools and methods are disclosed for the selective and rapid application of DC voltage pulses to drive irreversible electroporation for minimally invasive transurethral prostate ablation. In one embodiment, a switch unit is used to modulate and apply voltage pulses from a cardiac defibrillator, while in another, the system controller can be configured to apply voltages to an independently selected multiplicity or subsets of electrodes. Devices are disclosed for more effective DC voltage application including the infusion of cooled fluid to elevate the irreversible electroporation threshold of urethral wall tissue and to selectively ablate regions of prostate tissue alone.

A pulse generator discharge circuit is disclosed. The circuit includes one or more discharge stages, each discharge stage including a plurality of control input terminals. The circuit also includes first and second discharge terminals, and a plurality of serially connected switches electrically connected between the first and second discharge terminals, where a conductive state of each of the switches is controlled by a control signal. The circuit also includes a plurality of inductive elements configured to generate the control signals for the serially connected switches, where each inductive element is configured to generate a control signal for one of the serially connected switches in response to one or more input signals at one or more of the control input terminals, and where each of the serially connected switches is configured to receive a control signal from a respective one of the inductive elements.

Provided are medical devices that comprise first and second tubes with a sealed insulating space formed therebetween, the devices being steerable and configured to deliver a fluid to a treatment site on or within a subject. The tubes of the devices can include corrugations so as to allow for bendability of the devices. Also provided are methods of using the disclosed devices.

Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power—a product of a voltage difference across and an electrical current conducted by the engaged biological tissue—is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.

In an example, a cryotherapy system includes a base station, a cryotherapy applicator, and a cryogen conduit configured to couple the cryotherapy applicator to the base station and supply a cryogen from the base station to the cryotherapy applicator. The base station includes a housing including a canister receptacle that is configured to receive a canister containing the cryogen. The cryotherapy applicator includes a handle, a shaft extending from the distal end of the handle, and an end-effector coupled to the shaft. The end-effector is configured to use the cryogen to ablate a target tissue. An entirety of the cryotherapy applicator is movable relative to an entirety of the base station while the cryogen conduit couples the cryotherapy applicator to the base station.

Systems and methods are provided for non-destructive inspection of an interior of a vessel filled with a liquid.