Catheterization is carried out by bringing an electrode that is disposed on a distal portion of a catheter into contact with tissue, wherein the electrode has an area that falls within a range of 0.01-25 mm.sup.2. A power generator delivers pulses of radiofrequency power through the electrode to the tissue. While applying the pulses temperatures at the distal portion of the catheter are recorded. A rate of change of the temperatures is calculated and tissue thickness estimated based on the rate of change.

Disclosed is a system for monitoring physiological parameters during a medical interventional procedure involving high intensity/energy radiofrequency electrical currents/voltages applied through a body of a subject, the system including an electrode-based sensor, configured to close an electrical conduction path passing through a body of a subject, and one or more non-electrode-based sensors, a plurality of electrical lines, a monitor, and a filter array including EMI filters mounted at specific locations and characterized by a frequency response curve having a magnitude of an attenuation in a first frequency range (typical of operating frequencies of high intensity/energy radiofrequency medical interventional equipment), which is greater than a magnitude of an attenuation in a second frequency range (typical of the sampling frequencies of the electrode-based sensor and the one or more non-electrode-based sensors), the system being thereby configured for suppressing noise induced by the medical interventional equipment.

A method for coagulating and dissecting tissue. The method includes measuring a tissue property and delivering multiple energy modalities to the tissue based on the tissue property. The energy modalities being delivered from a generator either alone or in combination.

Devices, systems, and methods for degassing fluid prior to applying fluid to a treatment site during ablation therapy are provided. In one embodiment, an ablation system can include an elongate body, an ablation element, a heating assembly, and a fluid source. Fluid in the fluid source can be at least partially degassed prior to being provided as part of the system, or, in some embodiments, a degassing apparatus can be provided that can be configured to degas fluid within the system prior to applying the fluid to the treatment site. The degassing apparatus can include one or more gas-permeable and fluid-impermeable tubes disposed therein, which can allow gas to be removed from fluid passing through the apparatus. Other exemplary devices, systems, and methods are also provided.

An electrosurgical generator is disclosed. The electrosurgical generator includes: a power supply configured to output DC power; an inverter coupled to the power supply, the inverter including a plurality of switching elements; and a controller coupled to the inverter and configured to signal the inverter to simultaneously generate based on the DC power a radio frequency heating waveform and an electroporation waveform.

An electrosurgical device (10) is provided that is operable to deliver microwave energy within a controlled angular expanse to cause targeted tissue ablation. The device (10) comprises a blocking or reflecting material such as cylindrical members (34) that are laterally spaced from the antenna (20) that is operable to emit the microwave energy. The reflecting material creates regions in and/or surrounding the device into which sensors (51), such as thermocouple wires, may be placed to monitor a condition associated with the device or the patient's body.

Methods for treating gastrointestinal conditions, conditions associated with sympathetic and/or parasympathetic activity in the gastrointestinal organs, and conditions associated with central sympathetic and/or parasympathetic activity in a patient with therapeutic gastrointestinalneuromodulation and associated systems and methods are disclosed herein. One aspect of the present technology is directed to methods that at least partially inhibit sympathetic neural activity in nerves proximate a gastrointestinal artery of a gastrointestinal organ of a patient. Sympathetic drive in the patient can thereby be reduced in a manner that treats the patient for the gastrointestinal condition.

The present disclosure relates to a thermal ablation probe device that integrates deployable sensors with a freezing probe or heating probe for use in ablating tissues. The ablation probe includes a longitudinal body including a thermal ablation energy source which may be, e.g., a cryosource or a heat source. The longitudinal body has a proximal end and a distal end terminating at a probe tip; and at least one deployable assembly disposed within the longitudinal body. The deployable assembly includes a flexible and substantially rigid deployment member, and at least one sensor affixed to a distal end of the deployment member. The ablation probe further includes a control mechanism for controlling deployment and retraction of the deployable assembly.

Surgical systems are disclosed. Surgical systems can include evacuation systems for evacuating smoke, fluid, and/or particulates from a surgical site. A surgical evacuation system can be intelligent and may include one or more sensors for detecting one or more properties of the surgical system, evacuation system, surgical procedure, surgical site, and/or patient tissue, for example.

Surgical systems are disclosed. Surgical systems can include evacuation systems for evacuating smoke, fluid, and/or particulates from a surgical site. A surgical evacuation system can be intelligent and may include one or more sensors for detecting one or more properties of the surgical system, evacuation system, surgical procedure, surgical site, and/or patient tissue, for example.