An exemplary microwave ablation system is provided. The system may use a switching antenna for both microwave heating of target tissue and microwave radiometry to monitor the temperature of the heated tissue to ensure that the desired temperatures are delivered to adequately treat the target tissue and achieve therapeutic goals. The system may integrate switching components into the switching antenna, which eliminates error from heating of the reference termination and heating of the electrical cables.

A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.

A system comprises a surgical robot comprising a moveable robotic arm; a radiating applicator positioned at a distal end of the robotic arm, wherein the robotic arm is configured to move the radiating applicator to a desired operational position; and an energy source positioned on a distal portion of the robotic arm, in proximity to the radiating applicator, wherein the energy source is configured to provide RF or microwave energy to the radiating applicator for radiation by the radiating applicator.

An electrosurgical system that includes an electrosurgical generator arranged to supply microwave energy and an electroporation signal. The system includes an electrosurgical instrument insertable to a treatment region in biological tissue. The electrosurgical instrument includes a coaxial cable connected to the electrosurgical generator to receive microwave energy and the electroporation signal. The instrument includes a rod-shaped radiating tip portion coupled to a distal end of the coaxial cable to receive microwave energy and the electroporation signal, the radiating tip portion for radiating the microwave energy into the treatment region and for establishing an electric field using the electroporation signal to electroporate biological tissue. The instrument includes a conduit for conveying biological tissue away from the treatment region. The system includes a cytometer in fluid communication with the conduit to receive biological tissue, the cytometer for detecting the presence of a first predetermined cell type in the received biological tissue.

Provided in accordance with the present disclosure are systems and methods for identifying a percutaneous tool in image data. An exemplary method includes receiving image data of at least a portion of a patient's body, identifying an entry point of a percutaneous tool through the patient's skin in the image data, analyzing a portion of the image data including the entry point of the percutaneous tool through that patient's skin to identify a portion of the percutaneous tool inserted through the patient's skin, determining a trajectory of the percutaneous tool based on the identified portion of the percutaneous tool inserted through the patient's skin, identifying a remaining portion of the percutaneous tool in the image data based on the identified entry point and the determined trajectory of the percutaneous tool, and displaying the identified portions of the percutaneous tool on the image data.

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.

Electrical instrument for applying radiofrequency and/or microwave frequency energy to tissue, comprising: a distal part comprising an instrument tip for applying radiofrequency and/or microwave frequency energy to tissue, the instrument tip comprising first and second conductive elements; a coaxial feed cable comprising an inner conductor, a tubular outer conductor coaxial with the inner conductor, and dielectric material separating the inner and outer conductors, the coaxial feed cable being for conveying radiofrequency and/or microwave frequency energy to the distal part; wherein: the inner conductor is electrically connected to the first conductive element and the outer conductor is electrically connected to the second conductive element through a rotatable connection between the distal part and the coaxial feed cable that allows rotation of the distal part relative to the coaxial feed cable; and the instrument comprises an actuator for rotating the distal part in a first rotational direction relative to the feed cable.

An electromagnetic energy delivery apparatus comprises: an amplifier; an amplifier input configured to provide to the amplifier a signal to be amplified; bias circuitry configured to provide a bias signal to the amplifier, wherein amplifying of the input signal by the amplifier is dependent on the bias signal provided by the bias circuitry; an amplifier output configured to provide an output signal comprising an amplified version of the input signal, for providing energy delivery to a radiating element to produce electromagnetic radiation; and a controller configured to control operation of the bias circuitry to provide a time- varying bias signal thereby to provide a desired time variation of the output signal.

A radio frequency (RF) or microwave energy applicator device (10) for applying radio frequency or microwave radiation to a target (22), the applicator (10) comprising: an energy generator module (12) for generating RF or microwave energy, wherein the energy generator module (12) comprises an energy output (16) for outputting said generated energy; a radiating structure (14) for radiating RF or microwave radiation to the target wherein the radiating structure (14) comprises an energy input (18), wherein the energy generator module (12) and the radiating structure (14) are coupled to provide the energy output (16) of the energy generator module (12) and the energy input (18) of the radiating structure (14) at a transmission interface (20); wherein the transmission interface (20) comprises at least one transmission feature comprising a size, dimension and/or shape selected so that at least part of the energy provided to the transmission interface (20) is transmitted to the radiating structure (18) and/or at least part of the energy provided to the transmission interface (20) is reflected.

An esophageal ablation system including a positioner, an elongated, flexible shaft extending from the positioner, and a microwave emitter assembly disposed near the distal end of the shaft. The emitter assembly includes one or more microwave antennae and a balloon for spacing the antennae relative to target tissue. The device may have an inner balloon for deploying the antenna. The systems, devices and methods disclosed are useful for treating Barrett's Esophagus, Esophageal Adenocarcinoma, and Squamous Cell Carcinoma.