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1975results about How to "Improve visualization" patented technology

Electrosurgical instrument

A system and method are disclosed for removing a uterus using a fluid enclosure inserted in the peritoneal cavity of a patient so as to enclose the uterus. The fluid enclosure includes a distal open end surrounded by an adjustable loop, that can be tightened, a first proximal opening for inserting an electrosurgical instrument into the fluid enclosure, and a second proximal opening for inserting an endoscope. The loop is either a resilient band extending around the edge of the distal open end or a drawstring type of arrangement that can be tightened and released. The fluid enclosure is partially inserted into the peritoneal cavity of a patient in a deflated condition and then manipulated within the peritoneal cavity over the body and fundus of the uterus to the level of the uterocervical junction. The loop is tightened around the uterocervical junction, after which the enclosure is inflated using a conductive fluid. The loop forms a pressure seal against the uterocervical junction to contain the conductive fluid used to fill the fluid enclosure. Endoscopically inserted into the fluid enclosure is an electrosurgical instrument that is manipulated to vaporize and morcellate the fundus and body of the uterus. The fundus and body tissue that is vaporized and morcellated is then removed from the fluid enclosure through the shaft of the instrument, which includes a hollow interior that is connected to a suction pump The fundus and body are removed after the uterus has been disconnected from the tissue surrounding uterus.

Electrosurgical apparatus having digestion electrode and methods related thereto

InactiveUS6896674B1High trafficAvoid and minimize current shortingHeart valvesEndoscopesHigh frequency powerDigestion
Methods and apparatus for resecting and ablating tissue at a target site of a patient, the apparatus including a probe having an elongate shaft. The shaft includes a shaft distal end portion and a shaft proximal end portion, and a resection unit located at the shaft distal end portion. The resection unit includes a resection electrode support and at least one resection electrode arranged on the resection electrode support. The at least one resection electrode includes a resection electrode head. The probe and resection electrode head are adapted for concurrent electrical ablation and mechanical resection of target tissue. The shaft may include at least one digestion electrode capable of aggressively ablating resected tissue fragments. At least one fluid delivery port on the shaft distal end portion may provide an electrically conductive fluid to the resection unit or to the target site. The shaft may include at least one aspiration port, located proximal to the resection unit, for aspirating excess or unwanted fluids and resected tissue fragments from the target site. The at least one aspiration port is coupled to an aspiration lumen. The at least one digestion electrode may be arranged within the aspiration lumen for ablation of tissue fragments therein. In use, the digestion and resection electrodes of the probe are coupled to a high frequency power supply. A surgical kit comprising the probe is also disclosed, together with a method of making the probe.
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