US 12,458,433 B2
Treatment instrument
Tsunetaka Akagane, Hachioji (JP); Yusuke Takei, Kawasaki (JP); Kyoko Nozawa, Kunitachi (JP); and Kazue Tanaka, Sagamihara (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Hachioji (JP)
Filed on Feb. 18, 2022, as Appl. No. 17/675,341.
Application 17/675,341 is a continuation of application No. PCT/JP2019/032903, filed on Aug. 22, 2019.
Prior Publication US 2022/0168040 A1, Jun. 2, 2022
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 18/12 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 2018/00922 (2013.01); A61B 2018/1253 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1422 (2013.01); A61B 2018/1452 (2013.01)] 19 Claims
OG exemplary drawing
 
18. A treatment instrument comprising:
a sheath having a distal end and a proximal end;
a monopolar electrode exposed to an outside of the treatment instrument when the sheath moves to a proximal end side;
a first grasping member and a second grasping member arranged on a distal end side of the sheath, the first grasping member having a first grasping surface and the second grasping member having a second grasping surface, the first grasping surface and the second grasping surface being configured to grasp a living tissue;
a pair of electrodes arranged on at least one of the first grasping surface and the second grasping surface, the pair of electrodes being configured to function as a bipolar electrode; and
a cover configured to cover at least a part of a region of at least one of the first and second grasping members, wherein:
the monopolar electrode is positioned between a peripheral surface of the first grasping member and an inner surface of the cover facing the peripheral surface of the grasping member such that the monopolar electrode does not protrude from a cover.