A suction dissection catheter and method of dissecting a lymph node including forcing gripping fingers on the suction dissection catheter over a portion of the lymph node, applying a vacuum, applying energy to a garter electrode connecting the gripping fingers and dissecting the lymph node from the tissue surrounding the lymph node.

Treatment device for ultrasonic treatment and high frequency treatment procedure is equipped with an ultrasonic transducer including piezoelectric elements converting electrical power into ultrasonic vibrations. The treatment device includes a transmission rod with a treatment probe and jaw for clasping objects. The transmission rod includes features for damping, such as a sheath, a geometry of the outer surface of the transmission rod, or combinations of such features, to minimize or prevent excess vibrations and to, among other things, decrease frictional heat caused by the friction between the damping features and the transmission rod arising from attenuating the ultrasonic vibrations.

Systems, methods and devices for controlled sympathectomy procedures for neuromodulation in the treatment of subjects having neoplastic conditions are disclosed. Systems, methods, and devices for interventionally treating a cancerous tumor and cancer related pain are disclosed.

A cutting guard for use with a wound retractor includes a body having a lumen including a flexible inner surface with a ground contact extending therethrough. A ground guard is included having proximal and distal openings that define a guard lumen therethrough, the ground guard encapsulating the flexible inner surface of the body lumen. A biasing element is disposed within the guard lumen and encircles the flexible inner surface and biases the flexible inner surface inwardly. A cutting electrode is disposed proximate the distal opening of the ground guard and connects to a first electrical potential and the ground guard connects to a second electrical potential. Upon externalizing of tissue through the distal opening, oversized tissue forces the flexible inner surface of the body lumen and the ground contact outwardly to engage the ground guard to complete an electrical circuit and energize the cutting electrode to excise oversized tissue.

A tissue cutting device has an outer sleeve with a distal window and an inner cutting sleeve which moves past the window to cut tissue. The inner cutting sleeve has a lumen which may have a larger proximal diameter than distal diameter. A perimeter of the window may comprise a dielectric material. A distal edge of the inner sleeve may be displaced inwardly.

Provided is a medical device comprising an inner tubular member, an outer tubular member having a distal end and an open window disposed at the distal end, a first electrode and/or a second electrode disposed at the distal end of the outer tubular member, and a cannulated plunger or armature or shaft configured to drive the inner tubular member to cut tissue in cooperation with the open window of the outer tubular member wherein the first electrode and the second electrode are configured to provide RF energy needed for surgical operation and wherein the first and the second electrodes may be configured to be symmetrical or substantially symmetrical along a longitudinal axis of the outer tubular member or wherein the first electrode is configured to cover the open window of the outer tubular member and extended to one side of the outer tubular member and the second electrode is configured to be disposed on the other side of the outer tubular member. Also provided are methods of making a medical device as described herein.

A surgical instrument includes a shaft, an ultrasonic transducer, a waveguide acoustically coupled with the ultrasonic transducer and extending distally through the shaft, and an end effector arranged at a distal end of the shaft. The end effector includes an ultrasonic blade acoustically coupled with the waveguide, a clamp arm movable relative to the ultrasonic blade for clamping tissue, and an RF electrode operable to seal tissue with RF energy. The ultrasonic transducer is operable to drive the waveguide and the ultrasonic blade with ultrasonic energy. The surgical instrument further includes an ultrasonic electrical circuit operable to energize the ultrasonic transducer, and an RF electrical circuit operable to deliver RF energy to the RF electrode. A return path of the ultrasonic electrical circuit and a return path of the RF electrical circuit pass through a shared electrically conductive element.

A method and apparatus for treatment of pulmonary conditions, including a device having an end effector sized and shaped to contact a nerve component on the exterior of a bronchial segment and apply energy to that nerve component.

The disclosed technology is directed to a RF power generator and feedback control system used to regulate the electrical power delivered to a cutting filament (i.e., a cutting electrode) of an electrosurgical instrument. The electrosurgical instrument uses the delivered energy to form a cutting arc for ablating a tissue mass to access a target tissue therein. The instrument forms a basket-like receptacle around the target tissue to excise the target tissue from the ablated tissue mass. As the instrument forms the receptacle, the length of exposed filament ablating the tissue changes. To this end, the RF power generator described herein is configured to vary the total power delivered during the deployment of the instrument based on a measurement of output power derived from a differential phase angle between a current sense output and a voltage sense output, in some embodiments, to maintain a uniform power density along the length of exposed filament.

A surgical system includes a surgical instrument having a body, an ultrasonic transducer, a shaft extending distally from the body, and an end effector at a distal end of the shaft and being operable to treat tissue with ultrasonic energy. An accessory device is configured to operatively couple the surgical instrument with a generator operable to power the surgical instrument to provide ultrasonic energy. A primary EEPROM is provided within the instrument body and is operable to track usage of the surgical instrument. The system further includes at least one of: an accessory EEPROM integrated into the accessory device and being operable to track usage of the accessory device; a transducer EEPROM integrated into the ultrasonic transducer and being operable to track usage of the ultrasonic transducer; or an ASIC integrated into the accessory device and being operable to communicate with the generator regarding a state of the surgical instrument.