Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube having a distal end portion, and a bipolar electrosurgical electrode assembly located at the distal end of the tube. The electrosurgical electrode assembly comprises first and second electrodes separated by an insulation member. When an electrosurgical cutting voltage is applied to the electrode assembly, and relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The tube comprises a twin-walled construction with an inner wall, an outer wall and an air gap therebetween. This twin-walled construction reduces the heat that is able to travel proximally along the tube.

Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube having a distal end portion, and a bipolar electrosurgical electrode assembly located at the distal end of the tube. The electrosurgical electrode assembly comprises first and second electrodes separated by an insulation member. When an electrosurgical cutting voltage is applied to the electrode assembly, and relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The tube comprises a twin-walled construction with an inner wall, an outer wall and an air gap therebetween. This twin-walled construction reduces the heat that is able to travel proximally along the tube.

Abstract: A surgical instrument includes an elongate hollow probe having first and second apertures (4 and 5) at its distal end portion. An elongate drive shaft disposed within the probe (1) and mounted for rotation about its longitudinal axis within the probe. A cutting tool (2, 34) is located at the distal end of the drive shaft, and is positioned adjacent to the first aperture (4). A bipolar electrosurgical device (3) is located at the distal end of the probe (1) in the region of the second aperture (5). The electrosurgical device includes an active electrode (13) and a return electrode (11) separate and insulated therefrom. A motor (6) is provided for rotating the drive shaft; and suction means is provided for selectively providing a source of suction at either the first apertures (4) or the second aperture (5).

Abstract: A surgical instrument comprising an elongate hollow probe (1) having first and second apertures (4 and 5) at its distal end portion. An elongate drive shaft is disposed within the probe (1) and is mounted for rotation about its longitudinal axis within the probe. A cutting tool (2, 34) is located at the distal end of the drive shaft, and is positioned adjacent to the first aperture (4). A bipolar electrosurgical device (3) is located at the distal end of the probe (1) in the region of the second aperture (5). The electrosurgical device includes an active electrode (13) and a return electrode (11) separate and insulated therefrom. A motor (6) is provided for rotating the drive shaft; and suction means is provided for selectively providing a source of suction at either the first aperture (4) or the second aperture (5).

Abstract: A surgical instrument comprising an elongate hollow probe (1) having first and second apertures (4 and 5) at its distal end portion. An elongate drive shaft is disposed within the probe (1) and is mounted for rotation about its longitudinal axis within the probe. A cutting tool (2, 34) is located at the distal end of the drive shaft, and is positioned adjacent to the first aperture (4). A bipolar electrosurgical device (3) is located at the distal end of the probe (1) in the region of the second apertures (5). The electrosurgical device includes an active electrode (13) and a return electrode (11) separate and insulated therefrom. A motor (6) is provided for rotating the drive shaft; and suction means is provided for selectively providing a source of suction at either the first aperture (4) or the second apertures (5).