US 11,903,636 B2
Energy-based tissue specimen removal
Thomas E. Drochner, Longmont, CO (US); James D. Allen, IV, Broomfield, CO (US); Dylan R. Kingsley, Broomfield, CO (US); Prakash Manley, Arvada, CO (US); Tony Moua, Broomfield, CO (US); William E. Robinson, Boulder, CO (US); and Robert H. Wham, Boulder, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by COVIDIEN LP, Mansfield, MA (US)
Filed on Sep. 27, 2018, as Appl. No. 16/143,787.
Prior Publication US 2020/0100835 A1, Apr. 2, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 17/00 (2006.01); A61B 18/12 (2006.01); A61B 17/34 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1482 (2013.01) [A61B 17/00234 (2013.01); A61B 18/1206 (2013.01); A61B 17/3423 (2013.01); A61B 2017/00287 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/1253 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A tissue removal system, comprising:
an electrosurgical generator including an active electrode port and a return electrode port;
an active electrode device configured to connect to the active electrode port; and
a tubular return tissue guard configured to connect to the return electrode port, the tubular return tissue guard having a proximal end defining a proximal opening, a distal end defining a distal opening, and an intermediate waist portion between the proximal end and the distal end, wherein a diameter of the intermediate waist portion is less than a diameter of the proximal opening and a diameter of the distal opening, and wherein an inwardly-facing surface of the tubular return tissue guard defines a tubular channel and includes a first electrically-conductive portion and a second electrically-conductive portion, the first and second electrically-conductive portions disposed on the inwardly-facing surface of the tubular return tissue guard and extending from the intermediate waist portion to the distal end of the tubular return tissue guard, the first electrically-conductive portion configured to connect to the return electrode port and the second electrically-conductive portion electrically isolated from the first electrically-conductive portion and configured to connect to the return electrode port.