Patent ID: 9615876
Date: 2017-04-11
CPC Classifications: A61B

Claim:
1. A device for morcellating tissue within a body cavity of a patient, the morcellating device comprising a stationary tube having a distal end portion, the distal end portion including a stationary bipolar electrosurgical electrode assembly including a first active electrode located at the distal end of the tube and a second return electrode axially set back from the active electrode and separated from the active electrode by an insulation member, the arrangement being such that, when an electrosurgical cutting voltage is applied to the electrode assembly, tissue can be pulled against the distal end of the tube to form a slug of resected tissue within the tube, wherein the bipolar electrosurgical assembly has a first circumferential region and a second circumferential region, the first circumferential region extending continuously around at least 50% of the circumference of the tube, both the active electrode and the return electrode being present in the first circumferential region but only one of either the active electrode or the return electrode being present in the second circumferential region such that the bipolar electrosurgical assembly is adapted to cut tissue preferentially in the first circumferential region as compared with the second circumferential region.