A circular microwave ablation antenna is provided with a chamber for accommodating the coaxial cable and the conduit, the chamber and the conduit extend forward to the front end of the antenna. An emission window of the antenna is at least partially located in the conduit to enable the cooling medium to cool the emission window area of the antenna. The conduit of the microwave emission area is made of an insulation material, so that the microwave can radiate outward, and the rest of the conduit is made of a microwave shielding material. The choke ring located at the rear side of emission area is hermetically fixed to the conduit, so that the choke ring acts to block the microwave. A gap exists between the choke ring and the needle bar, and the gap is used for the backflow of the cooling medium.

Provided herein are devices, systems, and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, devices, systems, and methods are provided for delivering energy to difficult to access tissue regions (e.g. central or peripheral lung tissues), and/or reducing the amount of undesired heat given off during energy delivery.

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.

In one aspect, the disclosure presents an electrosurgical instrument for performing haemostasis by radiating microwave energy from a distal tip, where conductive radiating electrodes are coated in an insulating non-stick material. In another aspect, the disclosure provides an electrosurgical instrument for performing haemostasis using radiofrequency or microwave electromagnetic energy, where a distal tip of the instrument comprises a conductive hollow needle for conveying fluid to or from a treatment site, wherein the hollow needle is electrically grounded.

A system for controlling a robotic end-effector is disclosed. The system includes a robotic arm, a surgical tool including an end-effector with articulatable arm and a clamp jaw. A tool driver is coupled to the surgical tool and a motor is coupled to the tool driver and is configured to drive the surgical tool. A sensor is configured to sense external forces applied to the end-effector. A central control circuit is configured to control the tool driver. The central control circuit is configured to receive a sensed parameter from the sensor, receive a sensed motor current (I) from the motor, and control the tool driver based on the sensed parameter and the motor current (I).

Examples of a probe for microwave ablation are disclosed. The probe comprises a feed coaxial cable and an antenna that has a cylindrical outer housing with a predetermined diameter and a predetermined length defining a cavity therein and a radiating conductor positioned within the cavity with a matching stepped portion. The antenna further comprises a dielectric material placed in the cavity between the radiating conductor and the outer housing of the antenna to increase the mechanical strength of the probe as well as to improve the power coupling to the tissue to be ablated. The design of the coaxial cavity of the antenna with radiating conductor with a stepped portion fitted into dielectric materials increases antenna's mechanical strength to withstand higher temperatures and reduces an energy reflected back to the feed coaxial cable due to a good impedance match between the antenna and the feed cable such that antennas with smaller length can be used to fit curved paths.

This application provides a physical targeted hyperthermia system used for tumor therapy and a control method thereof. The system mainly includes a hyperthermia apparatus body, a microwave radiation device, a microwave receiving device, a microwave imaging unit, a microwave temperature-measuring unit, a hyperthermia solution generating unit, a hyperthermia solution executing unit, and a hyperthermia control device. The hyperthermia apparatus body is used to provide stable supporting surface for a patient and to provide an mounting sites for related function devices, the microwave radiation device is used to generate a microwave with a set wavelength and a set frequency radiating toward a set direction, the microwave receiving device and the microwave imaging unit are used to accurately position the tumor tissue, the hyperthermia solution generating unit is used to generate hyperthermia parameter information, and the hyperthermia solution executing unit is used to generate corresponding hyperthermia solution execution information.

A surgical system includes a stylus having a proximal end portion and distal end portion configured to penetrate lung tissue. The stylus may be movable between a first configuration and a second configuration within lung tissue. The surgical system may include a surgical instrument configured to treat lung tissue, a sealant configured to seal lung tissue, and an introducer configured for insertion into lung tissue. The introducer may have a proximal end portion and a distal end portion and may define a lumen therethrough configured to separately receive the stylus, the surgical instrument, and the sealant.

A method for calculating a corrected temperature value (RTP corrected). The method includes determining a measured temperature value from a remote thermocouple probe (RTP measured), determining a temperature value of a remote thermocouple module (RTM), determining a temperature value of a system controller module (SCM), determining a temperature value of a microwave module (MWM), and calculating the corrected temperature value (RTP corrected). The corrected temperature value (RTP corrected) is based on the determined temperature value of the remote thermocouple probe (RTP measured), the determined temperature value of the system controller module (SCM), and at least one of the determined temperature value of the remote thermocouple module (RTM) or the determined temperature value of the microwave module (MWM).

The invention relates to an electrosurgical apparatus for cutting and coagulating biological tissue. In particular, the present invention provides an electrosurgical generator arranged to generate radiofrequency (RF) electromagnetic (EM) energy and microwave frequency EM energy; wherein the electrosurgical generator is operable in each of a coagulation mode and a cutting mode, wherein in the coagulation mode the electrosurgical generator is arranged to deliver the RF EM energy and the microwave EM energy simultaneously in a coagulation composite waveform comprising a dominant microwave signal and a supplementary RF signal, and wherein in the cutting mode the electrosurgical generator is arranged to deliver the RF EM energy and the microwave EM energy simultaneously in a cutting composite waveform comprising a dominant RF signal and a supplementary microwave signal.