Methods and system are provided to mitigate RF interferences during operation of an electrosurgical system. An electrosurgical system configured to output therapeutic RF energy may refrain from outputting RF energy in order to measure an RF interference for a group of candidate frequencies, and to select a frequency from the group of candidate frequencies for which the measured RF interference is below a threshold value, and to produce a feedback signal (a control signal) at the selected frequency to control operation of the electrosurgical system. During operation of the electrosurgical system the feedback signal may be filtered by a BPF whose fundamental frequency is set to the selected frequency, to thus obtain an interference free feedback signal and, consequently, a reliable control of the electrosurgical system.

A tethered system for cryogenic treatment is disclosed in which a hand piece having an elongate probe with a distal tip and a flexible length, at least one infusion lumen positioned through or along the elongate probe, and a liner may be tethered to a base station having a reservoir of a cryoablative fluid via a connection having an elongate flexible body. The connection defines at least one fluid lumen for delivery of the cryoablative fluid from the reservoir and to the infusion lumen within the hand piece.

Treatment systems are provided, which comprise a treatment element applying a treatment to a tissue, a stimulation element optically stimulating nerves in the tissue, a sensing unit sensing an electrical signal produced by nerves in the tissue in response to the optical stimulation, and a control unit controlling the application of the treatment according to the sensed signal. The systems and methods are used to avoid damaging nerves by sensing them during operation and immediately before local treatment application and preventing energy emission when the treatment tool is too close to specified nerves. Additional electric stimulation may be provided to enable avoidance of nerve damages on a larger scale, the treatment may be applied by a cold laser, and the control unit may control the treatment in realtime and in a closed loop and immediate prevent further treatment upon sensing optically stimulated nerves.

Aspects of the present disclosure are presented for managing simultaneous outputs of surgical instruments. In some aspects, methods are presented for synchronizing the current frequencies. In some aspects, methods are presented for conducting duty cycling of energy outputs of two or more instruments. In some aspects, systems are presented for managing simultaneous monopolar outputs of two or more instruments, including providing a return pad that properly handles both monopolar outputs in some cases.

Embodiments of the present disclosure provide a method and apparatus for sensing. An exemplary apparatus includes a surgical device, a control unit comprising a user interface, a power unit, a motor, a warning element, a processor, and a memory including computer program instructions, the user interface operable to select between an on or off setting for the apparatus, the power unit operable to connect with a power source. The apparatus further includes a sensor located on at least one of the surgical device and the control unit, the sensor operable to sense a presence of gases, and a conduit comprising a vacuum tube fluidly coupled to the surgical device and the control unit, and a communication line operable to transmit electronic signals between the surgical device, the control unit and the sensor.

A surgical robotic arm includes an instrument having a coupler rotatable about a longitudinal axis, the coupler including: a drive screw; a drive nut threadably coupled to the drive screw, the drive nut movable along the longitudinal axis in response to rotation of the drive screw; and a drive member coupled to the drive nut and movable in response to movement of the drive nut. The surgical robotic arm also includes an instrument drive unit having: a motor configured to engage the coupler and rotate about the longitudinal axis to rotate the coupler and the drive screw; one or more sensors configured to measure one or more properties of the motor; and a controller coupled to the sensor(s) and the motor. The controller is configured to control the motor based on the property of the motor.

A method, including ejecting irrigation fluid from a distal end of a probe so as to irrigate tissue, and receiving, over a period of time, initial signals indicative of respective temperatures of the distal end, from a temperature sensor in the distal end. The method also includes formulating from the initial signals a temperature range between upper and lower temperature thresholds and, when a further signal from the temperature sensor, received subsequent to the period of time, is indicative of a further temperature above the upper temperature threshold, raising an alarm that a bubble is present in the irrigation fluid.

A treatment device includes: a treatment portion including an abutment surface which is abutted on the living body tissue, and a back surface opposed to the abutment surface, the treatment portion being capable of applying energy to the living body tissue via the abutment surface, and heat being transferred toward the back surface in accordance with the application of the energy; a cover covering the back surface of the treatment portion; and an adjuster disposed between the treatment portion and the cover, and configured to vary a distance between the treatment portion and the cover, and to adjust an air layer region between the treatment portion and the cover.

The present invention relates to comprehensive 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, systems and methods are provided for identifying and treating a target tissue region adjusting for ablation-related anatomical changes (e.g., tissue contraction).

Fluidic devices, methods, and systems are disclosed. One system may comprises a sheath, a delivery module, and a removal module. The sheath includes a working lumen, a delivery lumen, and a removal lumen. The delivery module is configured to move a fluid from a fluid reservoir and into a body cavity through the delivery lumen. The removal module is configured to move the fluid and a particulate contained therein out of the body cavity through the removal lumen, through a filtration device that removes the particulate, and back into the fluid reservoir. One method comprises placing a distal end of sheath into a body cavity, energizing the working lumen to generate a particulate in the cavity, moving the fluid into the cavity to engage the particulate, and moving the fluid and the contaminant from the body cavity, through a filter for removing the contaminant, and back into the fluid source.