A method of generating a representation of an active heating zone on a display in real time during an ablation procedure includes processing imaging data of a surgical site generated by an imaging device, navigating an ablation device in proximity to target tissue, delivering electrosurgical energy to the target tissue via the ablation device to generate an active heating zone, detecting a Doppler shift in the imaging data based on the delivery of electrosurgical energy to the target tissue, and generating a representation of the active heating zone relative to the surgical site based on the detected Doppler shift.

A method of treating a patient with a therapeutic laser pulse includes applying a cooling mechanism to a first skin area, cooling a target skin area within the first the skin area from a first surface temperature to a second temperature through application of the cooling mechanism prior to application of the therapeutic laser pulse, initiating application of the therapeutic laser pulse at a first timepoint, while continuing to apply the cooling mechanism, determining a surface temperature of the target skin area a plurality of times during application of the therapeutic laser pulse at a refresh rate of 25 Hz to 400 Hz, and terminating the application of the therapeutic laser pulse at a second timepoint, based on the surface temperature determinations. Each of the plurality of surface temperature determinations occurs during a single therapeutic laser pulse duration from the first time point to the second timepoint.

Temperature sensing catheters and systems that can be used during cardiac ablation procedures to measure and monitor temperatures, and the rate and spread of temperature changes in the heart. The temperature data can be used to calculate temperature gradients, which may be used to estimate if and when certain regions of heart may undergo injury due to thermal exposure. The temperature data can be used to limit or cut-off power delivery to an ablation catheter, or otherwise modify the ablation procedure, to prevent injury to certain regions of heart. In some cases, the temperature data is used to control aspects of the ablation in a feedback loop control scheme.

A method for determining a change of temperature of an object. The method may include heating an object and measuring scattering parameters (S-parameters) of scattered microwave electric fields from the object. A distorted Born iterative method may be used to determine a change of a dielectric property of the object based on the measured S-parameters. A change of temperature of the object may be determined based on the change of the dielectric property of the object.

A thulium fiber laser system can be used to treat tissues based on the ability for quick changes between laser pulses. For example, to treat stones in a tissue, a long pulse having low peak power can be used to create bubbles in front of the stone (calculi), then follow a series of shorter pulses and higher peak power can be used to break the stone. The sequence can be repeated to maintain large bubble formation, with the long pulse characteristics changed to accommodate for the changes in the tissue. A fluorescent sensing assembly can be used to detect the tissue conditions for selecting the conditions of the thulium fiber laser.

Provided herein is a multifunctional aesthetic system including a housing, an electromagnetic array situated in the housing and having one or more electromagnetic radiation (EMR) sources, a controller in electronic communication with the array to operate the one or more of the EMR sources to direct the EMR beam to a treatment area, and one or more sensors in electronic communication with the controller for providing feedback to the controller based on defined parameters to allow the controller to adjust at least one operating condition of the multifunctional system in response to the feedback.

Tumor ablation devices and related systems and methods are disclosed. Some tumor ablation devices include an RF energy delivery probe with two conductors and one or more thermocouples. The thermocouple measures a temperature at a location on one of the conductors. A generator can produce a current to be conducted between the first conductor and the second conductor via tissue within a desired ablation region. The ablation regions created by the RF energy delivery probe are symmetric about poles of the first conductor and the second conductor. A distal portion of the RF energy delivery probe may articulate, enabling a user to position the RF energy delivery probe in a proper position to ablate the tumor. The thermocouples may be disposed on a flexible or wired thermocouple circuit that is disposed between insulators.

An ablation probe tip 100 having a shaft 102 with an insertion end 104 and an annular aperture 120 near the insertion end 104. A center of ablation 124 is located within the shaft 102 and surrounded by the annular aperture shaft 102. The ablation probe tip 100 may be part of an ablation probe system 50 that includes an ablation source 60 that provides ablation means 62 to the ablation probe tip 100. The center of ablation 124 is a focal region from which the ablation means 62 radiates through the annular aperture 120 to form an ablation zone 150, 160, 170. The system 50 has at least one intra-operative control selected from the group of: ablation zone positioning control, ablation zone shaping control, ablation center control, ablation zone temperature control, guided ablation volume/diameter control, and power loading control.

Various systems and methods for determining the composition of tissue via an ultrasonic surgical instrument are disclosed. A control circuit can be configured to monitor the change in resonant frequency of an ultrasonic electromechanical system of the ultrasonic surgical instrument as the ultrasonic blade oscillates against a tissue and determine the composition of the tissue accordingly. In some aspects, the control circuit can be configured to modify the operation of the ultrasonic electromechanical system or other operational parameters of the ultrasonic surgical instrument according to the detected tissue composition.

An ablation probe tip 100 having a shaft 102 with an insertion end 104 and an annular aperture 120 near the insertion end 104. A center of ablation 124 is located within the shaft 102 and surrounded by the annular aperture shaft 102. The ablation probe tip 100 may be part of an ablation probe system 50 that includes an ablation source 60 that provides ablation means 62 to the ablation probe tip 100. The center of ablation 124 is a focal region from which the ablation means 62 radiates through the annular aperture 120 to form an ablation zone 150, 160, 170. The system 50 has at least one intra-operative control selected from the group of: ablation zone positioning control, ablation zone shaping control, ablation center control, ablation zone temperature control, guided ablation volume/diameter control, and power loading control.