In one embodiment, a medical system includes a medical instrument includes an elongated shaft having a distal end, at least one cutting element disposed at a distal end of the shaft, a position-tracking transducer disposed at the distal end of the shaft, and electrically insulated from the shaft and the at least one cutting element, and at least one metal coagulation electrode disposed at least partially over the position-tracking transducer, which electrically isolates the at least one metal coagulation electrode from the shaft, a signal generator coupled to apply an electrical current to the at least one metal coagulation electrode, and processing circuitry configured to receive signals generated by the position-tracking transducer, and track a location of the distal end responsively to the received signals.

An electrosurgical generator includes: a power supply configured to output a DC waveform; a power converter coupled to the power supply and configured to generate a radio frequency waveform based on the DC waveform; an active terminal coupled to the power converter and configured to couple to a first electrosurgical instrument and a second electrosurgical instrument; at least one sensor coupled to the power converter and configured to sense at least one property of the radio frequency waveform; and a controller coupled to the power converter. The controller is configured to: determine a first impedance associated with a first electrosurgical instrument and a second impedance associated with a second electrosurgical instrument based on the at least one property of the radio frequency waveform; and adjust at least one parameter of the radio frequency waveform based on the first impedance and the second impedance.

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.

An electrosurgical device may include a controller including an electrical generator, a surgical probe having a distal active electrode in electrical communication with an electrical source terminal of the electrical generator, and a return pad in electrical communication with an electrical return terminal of the electrical generator. The electrical generator may be configured to source an electrical current from the electrical source terminal, in which the electrical current combines characteristics of a therapeutic electrical signal and characteristics of an excitable tissue stimulating signal. The device may be configured to determine a distance from the electrode to an excitable tissue, based at least in part on an output signal generated by a sensing device in the pad. The device may also be configured to alter one or more characteristics of the therapeutic signal when the distance from the electrode to the tissue is less than a predetermined value.

The present invention relates to an ablation assembly (100) to treat target regions of a tissue (41) in organs (44) comprising: an ablation catheter (1) comprising an elongate shaft (13) having a longitudinal main direction (X-X), said elongate shaft (13) comprising at least a shaft distal portion (17), said shaft distal portion (17) comprising a shaft distal portion distal end (19);
said ablation catheter (1) comprising an inner lumen (118) arranged within the elongate shaft (13);
said ablation catheter (1) comprising a shaft ablation assembly (20) fixedly disposed at said shaft distal portion (17), the shaft ablation assembly (20) being configured to deliver both thermal energy for ablating said tissue (41) and non-thermal energy for treating said tissue (41); at least a shape setting mandrel (26) disposed within the ablation catheter (1), the shape setting mandrel (26) being insertable within the inner lumen (118) and removable from the inner lumen (118),
wherein the shape setting mandrel (26) is free to move in respect of the inner lumen (118) avoiding any constraint with said shaft distal portion (17) during the shape setting mandrel insertion,
wherein the shape setting mandrel (26) comprises at least a pre-shaped configuration and the shape setting mandrel (26) is reversibly deformable between at least a straight loaded configuration and said pre-shaped configuration,
wherein, when the shape setting mandrel (26) is fully inserted in the shaft distal portion (17), the shape setting mandrel (26) is configured to shape set said shaft distal portion (17) with said pre-shaped configuration.

Ablation systems and methods detect and address distortion caused by a variety of factors. A method includes measuring a temperature curve at target tissue; applying ablation energy to the target tissue; determining a peak temperature on the temperature curve; if the peak temperature is greater than the predetermined peak temperature, determining a time at which the temperature curve crosses to a lower temperature; and if the determined time is greater than a predetermined time, generating a message indicating that the target tissue was successfully ablated. Another method includes determining a distance between a remote temperature probe and an ablation probe, applying ablation energy to target tissue, measuring temperature at the remote temperature probe, estimating ablation size based on the determined distance and the temperature measured by the remote temperature probe, and determining whether the target tissue is successfully ablated based on the estimated ablation size.

An energy module is disclosed. The energy module includes a control circuit and a two wire interface coupled to the control circuit. The two wire interface is configured as a power source and as a communication interface between the energy module and a neutral electrode.

The disclosed technology is directed to a surgical instrument comprises a sheath having respective opposed proximal and distal ends. A pair of grasps is disposed on the distal-end portion of the sheath gripping a treatment target therebetween. A drive shaft is coupled to at least one of the pair of grasps to open or to close the pair of grasps by being moved along the longitudinal axis with respect to the sheath. Electric elements are used to apply treatment energy to the treatment target. A first operating device supplies the electric energy to the electric elements in a first supply state. A first member produces a force to open or close the pair of grasps and applies the force to the drive shaft. A second member is disposed in line with the first member and applies a force to the drive shaft in response to the operation input.

A device for fragmenting a surgical implant includes a cap. The cap includes a first channel extending from a first end of the cap to the second end of the cap. The device includes a first electrode, a second electrode, and an endoscope coupled with the cap.

Methods and systems are disclosed for removing a tattoo from a subject's skin by application of radiation to a target region of a subject's tattooed dermis, mobilization of tattoo ink particles, and extraction of the tattoo ink particles from the tattooed dermis. In certain embodiments, the invention can further include induction of a plasma, e.g., a cold atmospheric plasma, at the target region to assist in the degradation, dislodgement and/or mobilization of the tattoo ink particles.