US 12,064,164 B2
Electrosurgical instrument
James Alan Dickson, Cardiff (GB)
Assigned to GYRUS MEDICAL LIMITED, Cardiff (GB)
Filed by GYRUS MEDICAL LIMITED, Cardiff (GB)
Filed on Aug. 2, 2021, as Appl. No. 17/391,133.
Claims priority of application No. 2013367 (GB), filed on Aug. 26, 2020.
Prior Publication US 2022/0061910 A1, Mar. 3, 2022
Int. Cl. A61B 18/14 (2006.01); A61B 18/12 (2006.01); A61B 17/32 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1402 (2013.01) [A61B 18/1206 (2013.01); A61B 18/14 (2013.01); A61B 18/148 (2013.01); A61B 17/32002 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00136 (2013.01); A61B 2018/00142 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00202 (2013.01); A61B 2018/00208 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00607 (2013.01); A61B 2018/00916 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1467 (2013.01); A61B 2018/1497 (2013.01); A61B 2218/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An end effector for an electrosurgical instrument, comprising:
an active electrode received by an insulating material, the active electrode comprising a primary suction aperture which provides access to a primary fluid channel extending from the active electrode, through the insulating material, to a lumen, the lumen being arranged to carry fluid from a surgical site when in use;
at least one additional fluid channel providing alternative access to the primary fluid channel from the active electrode, the at least one additional fluid channel bypassing the primary suction aperture; and
a retainer to hold the active electrode in place, the retainer including recesses to form part of the at least one additional fluid channel.