Devices and methods for thermally modulating tissue are disclosed herein. Exemplary embodiments of the present technology can comprise a device including a probe and a chemical reactant supply fluidically coupled to the probe. The probe includes an elongated shaft member, a reaction chamber, a plurality of lumens each extending from a proximal end portion of the probe to the reaction chamber, and a tip at a distal terminus of the probe. The chemical reactant supply includes a first chemical reactant and a second chemical reactant. The tip is configured to penetrate tissue of a patient such that the reaction chamber is positioned adjacent a target region of the patient. The reaction chamber is configured to receive the first and second chemical reactants to cause an exothermic or endothermic reaction that in operation cools or heats, respectively, the target region.

Methods and systems for treating biological tissue using high frequency electrical energy includes a cycle comprising a desiccating phase, a cutting phase and a coagulating phase. During the dessicating phase of the cycle, a first high frequency electrical energy applied to the tissue for desiccating the tissue is modulated. A first parameter associated with application of the first high frequency electrical energy to the tissue for desiccating the tissue is estimated. During the cutting phase, cutting energy applied to the tissue for cutting the tissue is then modulated based on the first parameter. During the coagulating phase, a second high frequency electrical energy applied to the tissue for coagulating the cut tissue is modulated.

The present disclosure is related to field of Fiber Feedback (FFB) technology, and provides a method and system for estimating the distance between a fiber end and a target. The method includes illuminating, by a Light Emitting, Transmitting and Detecting (LETD) system, the target with laser light of different wavelengths having low and high water absorption coefficients, using different laser light sources, as well as receiving a returned signal corresponding to the incident laser light of different wavelengths, and detecting the returned signal to measure intensity values of the returned signal of a specific wavelength. Using the measured intensity values, a processing unit may estimate distance between the fiber end and the target. The present disclosure enables accurate estimation of distance between a fiber end and the target. The present disclosure also provides a robust distance estimation technique which is compatible with different types of targets.

A fluid detection assembly for detecting fluid contamination within a medical device includes a first pair of detection wires and a controller. The first pair of detection wires includes an input first detection wire and a spaced apart output first detection wire that are in fluid communication with one another. The input first detection wire conducts a first electrical signal and the output first detection wire receives the first electrical signal. The controller receives the first electrical signal from the output first detection wire and determines a first propagation delay. The controller can determine a type of fluid contamination, such as blood or saline, based on the first propagation delay. The fluid detection assembly can include a second pair of detection wires that is spaced apart from the first pair of detection wires.

A surgical visualization system may include particle trend analysis. The surgical visualization system may include a field programable gate array (FPGA) that is configured to transform sensor information of backscattered laser light into real-time information of particle movement (e.g., blood cells) in a portion of a surgical field. The system may communicate the real-time information to a processor that is remote to the FPGA for aggregation and analysis. The surgical visualization system may display both a metric representing a present state of moving particles and an aggregated state of the moving particles. The system may display both the rate of particle movement and the acceleration for use by the surgeon.

A uterine manipulator including an elongate shaft having a distal portion configured to be inserted into a uterus through a lumen of a cervix, and a return electrode coupled to the elongate shaft. The return electrode is configured to be electrically coupled to an electrosurgical generator.

The present disclosure relates generally to dual-function medical devices with diagnostic and therapeutic capabilities, such as real-time visualization and ablation. Many embodiments may include an ergonomic handle and dual-lumen catheter configured for dual-function diagnostic and therapeutic use during a medical procedure, such as a duodenoscope. The medical device may be delivered within an endoscope working channel to provide real-time visualization (e.g., radial ultrasound imaging) and treatment (e.g., soft tissue ablation) of cancerous tissue. For instance, a first lumen may include a high-frequency linear or radial ultrasound and the second lumen may include a surgical instrument, such as an ablation tool. Some embodiments may include a controller with a feedback loop configured to adjust the therapeutic tool based on data from the diagnostic tool. For instance, the power of an ablation tool may be adjusted by the controller based on data generated by an imaging device.

A system and an ablation probe of a system monitors insertion depth during an ablation procedure. The ablation probe includes a housing, an elongated shaft extending from the housing, a distance sensor operably coupled to the housing, and a microcontroller operably coupled to the distance sensor. The elongated shaft is configured to be inserted through a skin surface. The distance sensor measures a distance value between the housing and the skin surface. The microcontroller receives the measured distance value from the distance sensor, calculates an insertion depth value of the elongated shaft based on the received measured distance value, and causes a display unit to display the calculated insertion depth value.

The present disclosure relates to a deployable assembly sleeve including a longitudinal body including a lumen, with the longitudinal body having a proximal end and a distal end; and at least one deployable assembly disposed upon the longitudinal body, the deployable assembly including a flexible and substantially rigid deployment member, and at least one sensor affixed to a distal end of the deployment member; and a control mechanism for controlling deployment in a distal direction and retraction in a proximal direction of the deployable assembly.

An apparatus includes a catheter shaft assembly and an end effector positioned at a distal end of the catheter shaft assembly. The end effector includes a balloon, one or more electrodes on the balloon, and a tip assembly at a distal end of the balloon. The balloon defines an interior configured to receive a fluid to inflate the balloon. The balloon is sized and configured to fit within a cardiovascular anatomical structure. The tip assembly includes a pressure relief valve that is configured to transition between a sealing state and a pressure-relieving state. In the sealing state, the pressure relief valve is configured to prevent fluid from leaking out from the interior of the balloon via the pressure relief valve. In the pressure-relieving state, the pressure relief valve is configured to provide a path for fluid to leak from the interior of the balloon via the pressure relief valve.