The present disclosure includes catheter systems and methods for treatment of occlusions, including coronary artery chronic total occlusions. The catheter system comprises a catheter coupled to a control system with a distal end inserted into a patient and proximal to a location within a blood vessel with an occlusion. The catheter comprises a flexible outer sheath surrounding a housing with a plurality of lumens to perform various functions to penetrate occlusions.

A medical laser system for outputting laser pulses includes at least one laser cavity configured to generate at least one laser pulse, a rotating mirror configured to receive and reflect the at least one laser pulse, a beam splitter configured to receive and reflect a portion of the at least one laser pulse received from the rotating mirror, an energy-sensing device configured to detect the portion of the at least one laser pulse, an energy measurement assembly configured to generate a feedback signal based on the portion of the at least one laser pulse detected by the energy-sensing device, and a controller configured to generate an electronic control pulse based on the feedback signal received from the energy measurement assembly to generate at least one adjusted laser pulse.

A surgical instrument includes a housing having an elongated shaft extending distally therefrom and configured to support an end effector assembly at a distal end thereof. The end effector assembly includes first and second jaw members each having a tissue sealing plate disposed thereon and adapted to connect to an electrosurgical energy source for delivery thereto upon activation thereof. A sensor is disposed on one (or both) of the tissue sealing plates and is configured to communicate data relating to tissue disposed between the first and second jaw members to the electrosurgical energy source for correlation to a resonance frequency of the tissue. The resonance frequency of the tissue, in turn, is used to adjust one or more parameters associated with the delivery of electrosurgical energy to the tissue upon activation thereof.

A medical laser system for outputting laser pulses includes at least one laser cavity, a rotating mirror, a user interface, and a controller. The controller is configured to receive at least one laser parameter associated with a laser pulse output by the system. The controller is configured to determine an average power level of the laser pulse based on the at least one laser parameter associated with the laser pulse. The controller is configured to determine a pulse width modulation (PWM) control signal based on at least one laser parameter. The controller is configured to generate the laser pulse based on the average power level and the PWM control signal, the laser pulse comprising at least one of a first shape, a second shape, or a third shape. Each of the first shape, the second shape, and the third shape of the laser pulse includes different pulse widths.

Apparatus for the treatment of a target tissue with a laser beam in which the target tissue is immersed in a liquid medium within a body lumen. The laser device is configured to provide one or more laser pulses which are configured by a controller to have an energy sufficient to form one or more vapor bubbles in the liquid medium at the distal delivery end of the fiber. The one or more pulses are configured by the controller to: first, cause a vapor bubble to be formed distally of the distal end portion of the endoscope and around the distal delivery end of the optical fiber; second, cause a second bubble to be formed distally of the first bubble; and, third, inflate the second bubble as the first bubble has begun to collapse to expand an amount sufficient to displace a substantial portion of the liquid medium from the space between the distal delivery end of the fiber and the target tissue.

A medical RF apparatus using an RF pulse and a method of controlling the medical RF apparatus are provided. The medical RF apparatus includes an RF generator, which generates a test pulse for detecting characteristics of tissue, a monitoring unit, which monitors the change in the information on the tissue state while the test pulse is transmitted to the tissue, and a measurement unit, which determines the tissue characteristics of a patient by comparing the values monitored in the monitoring unit with the reference data.

Described herein is a method of treating migraines using PFA ablation technology which includes advancing a pulse field ablation delivery member into a nasal cavity (both unilateral and bilateral) of a patient with the pulse field ablation member in a first collapsed configuration and contacting a surface of a nasal cavity tissue with the pulse field ablation delivery member without penetrating or piercing the nasal cavity tissue surface. The treatment further includes reconfiguring the pulse field ablation delivery member from the first collapsed configuration to an expanded configuration after introducing the pulse field ablation member into the desired position within the nasal cavity, and ablating a target treatment site with the pulse field ablation delivery member in order to treat or prevent at least one of the group of medical conditions, wherein the target treatment site includes at least one nasal nerve tissue or nasal blood vessel with or without contact.

A system for deploying needles in tissue includes a controller and a visual display. A treatment probe has both a needle and tines deployable from the needle which may be advanced into the tissue. The treatment probe also has adjustable stops which control the deployed positions of both the needle and the tines. The adjustable stops are coupled to the controller so that the virtual treatment and safety boundaries resulting from the treatment can be presented on the visual display prior to actual deployment of the system.

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.

Electrosurgical devices are shown with a coated electrode. Electrosurgical devices and methods of use are shown to provide a higher concentration of energy at different resistance regions within a coating. Electrosurgical devices and methods of use are also shown to utilize heat in an electrode contained by a thermally insulative coating to provide a second tissue modification.