Surgical devices for treating tissue are provided. Also provided are systems for treating tissue and methods of treating tissue. An exemplary surgical device has a handle, a fluid passage connectable to a fluid source, a tip portion and a distal end. The tip portion can simultaneously provide RF power and conductive fluid to tissue. The tip portion includes an electrode having a domed portion having a domed surface and a cylindrical portion having a cylindrical surface. The domed portion is located distal to the cylindrical portion and occupies at least a portion of the distal end of the surgical device. The device includes a fluid outlet opening in fluid communication with the fluid passage, the fluid outlet opening configured to provide the conductive fluid to a surface of the electrode proximal to the distal end surface of the surgical device.

Fluid-assisted medical devices, systems and methods

An electro-mechanical surgical device, system and/or method may include a housing, at least two opposing jaw, and at least one electrical contact associated with at least one of the jaws. The electrical contact may include at least one of a bipolar electrical contact and an ultrasonic electrical contact. The electrical contact may be a row of electrodes located on one or all of the jaws. A sensor may also be associated with any tissue located between the jaws to sense and report the temperature of that tissue. A piercable ampulla containing fluid may also be placed on at least one of the jaws so that the fluid is releasable when the jaws are in closed position and the electrode(s) pass through the tissue into the piercable ampulla.

Bipolar or ultrasonic surgical device

A bipolar surgical device comprises a pair of actuable jaws. A first electrode member which optionally includes a line of electrically coupled tissue-penetrating elements is formed on one of the jaws, and a second electrode member which optionally includes a line of electrically coupled tissue-penetrating elements is formed on the same or the other jaw. The electrode members are laterally spaced-apart and arranged in a parallel, usually linear manner so that the lateral distance therebetween remains generally constant. In operation, tissue may be grasped between the jaws so that the electrode members contact and/or the tissue-penetrating elements enter into the tissue. By energizing the electrode members at opposite polarities using a high frequency energy source, tissue between the jaws will be heated, coagulated, and/or necrosed, while heating of tissue outside of the lines will be minimized.

Bipolar surgical instruments having focused electrical fields

An electrosurgical working end and method for obtaining a tissue sample for biopsy purposes, for example, from a patient's lung or a liver. The working end provides curved jaw members that are positioned on opposing sides of the targeted anatomic structure. The working end carries a slidable extension member that is laterally flexible with inner surfaced that slide over the jaw members to clamp tissue therebetween. As the extension member advances, the jaws compress the tissue just ahead of the advancing extension member to allow the laterally-outward portion of the extension member to ramp over the tissue while a cutting element contemporaneously cuts the tissue. By this means, the transected tissue margin is captured under high compression. The working end carries a bi-polar electrode arrangement that engages the just-transected medial tissue layers as well as surface layers to provides Rf current flow for tissue welding purposes that is described as a medial-to-surface bi-polar approach.

Electrosurgical working end and method for obtaining tissue samples for biopsy

Methods and systems are provided for necrosing, and resecting tissue. A pair of electrodes (12, 14) are placed on opposed tissue surfaces, and radio frequency power (16) is applied through the electrodes (12, 14) to necrose a tissue mass therebetween. After necrosis the tissue may be resected along a plane within the necrosed region with minimum or no bleeding. The tissue mass may then be removed.

Methods and systems for organ resection

A bipolar medical coagulation and/or cauterizing instrument has two elongated electrodes with first end portions which constitute the working end of the instrument and second end portions which are connectable to different poles of a high-frequency generator. The intermediate portions of the electrodes are surrounded by deformable insulators which are shrunk onto the respective electrodes and are confined in a tubular member serving to prevent the electrodes from moving relative to each other. To this end, the intermediate portions have cross sections which are out-of-round and/or which vary in the longitudinal direction of the respective electrodes. The insulators closely follow the outlines of the respective intermediate portions, and the tubular member closely follows the outlines of the insulators.

Bipolar medical coagulation and cauterizing instrument

Bipolares koagulations- und/oder schneidinstrument

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Bipolar medical coagulation and cauterizing instrument

Bipolares koagulations- und/oder schneidinstrument