An apparatus and method for sending test signals to an instrument, and checking the resultant and subsequently arriving echo signals in order to detect specific properties and changes of properties on the line, the instrument, the tissue or also on a fluid body, e.g., plasma body, present on an electrode of the instrument, and to control the operation of the supply arrangement accordingly.

A method for treating a treatment site within a body of a patient with a catheter system includes generating energy with an energy source; positioning an inflatable balloon substantially adjacent to the treatment site, the inflatable balloon having a balloon wall that defines a balloon interior that receives a balloon fluid; receiving energy from the energy source with an energy guide; guiding the energy with the energy guide into the balloon interior; sensing acoustic sound waves generated in the balloon fluid with an acoustic sensor that is positioned outside of the body of the patient; generating a sensor signal with the acoustic sensor based at least in part on the sensed acoustic sound waves; electrically coupling a system controller to the acoustic sensor; receiving the sensor signal from the acoustic sensor with the system controller; and controlling operation of the catheter system with the system controller based at least in part on the sensor signal, the system controller being configured to recognize one of: (i) normal operation of the catheter system, and (ii) potential damage to the energy guide.

A device is provided for generating RF power for an electrosurgical instrument, wherein the circuit provides the electrosurgical current according to a specified set of predefined parameters. The invention further includes at least one read and write RFID that reads information from a RFID tag. The circuit changes the parameters based on the information.

A biological tissue monitoring system has control circuitry programmed or configured to monitor an impedance of biological tissue. The control circuitry is programmed or configured to receive or determine an impedance measurement of the biological tissue in response to power delivered to the biological tissue at a plurality of frequencies and a plurality of time points, and adjust or cause to be adjusted the power delivered to the biological tissue at a subsequent time point based on the impedance measurement at the plurality of frequencies and the plurality of time points.

A method of determining a pulsed field ablation waveform parameter for creating a desired lesion characteristic in cardiac tissue. The method of provides an electrosurgical generator configured to deliver electroporation pulses, the generator configured to: load predetermined waveform parameters (y.sub.i); load predetermined modeling data (x.sub.i); accept entry of a user inputted desired lesion characteristic (u.sub.i); and determine at least one corresponding pulsed field ablation waveform parameter based on (u.sub.i), (y.sub.i); and (x.sub.i).

An electrosurgical system with an electrosurgical instrument, an evacuation device and an electrosurgical generator, to which the electrosurgical instrument and the evacuation device are connected, wherein the electrosurgical generator has a processor and at least one memory and is configured to convert entries in the memory into control instructions for operating the evacuation device and, during operation, to carry out control interventions corresponding to the control instructions for controlling the evacuation device, wherein the entries in the memory defining the control instructions for operating the evacuation device are specific to a respective electrosurgical instrument and/or a respective operating mode.

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.

A processor of an electric power source device exercises control over a power output before a control switching time point based on a value related to initial impedance, and determines the control switching time point upon detecting that a value related to impedance of a living tissue is at a minimum. The processor sets a set electric-power value of the power output based on a parameter related to controlling the power output before the control switching time point, and performs constant-electric-power control by controlling the power output using the electric-power value at and after the control switching time point.

A method and system includes, using a probe, applying irreversible electroporation (IRE) pulses to tissue over a time period to form a lesion in the tissue. A contact force applied to the tissue by the probe is measured over the time period. An IRE index is calculated based on the measured contact force and on a power level of the IRE pulses. Whether a value of the calculated estimated IRE index values has reached the prespecified target IRE index value is determined. Application of the IRE pulses to the tissue is displayed as a graphic and/or alphanumeric data while the estimated IRE index values are being calculated.

A method for determining a suitable set of parameters for operating a light source within a photo-thermal targeted treatment system for targeting a chromophore embedded in a medium is disclosed. The method includes, before administration of a treatment protocol: 1) administering at least one laser pulse from the light source at a preset power level to a location to be treated, the preset power level being below a known damage threshold; 2) measuring a skin surface temperature at the location to be treated, following administration of the at least one laser pulse; 3) estimating a relationship between the parameters for operating the light source and the skin surface temperature; and 4) defining a safe operating range for the parameters for operating the light source in order to avoid thermal damage to the medium at the location to be treated while still effectively targeting the chromophore in administering the treatment protocol.