US 12,343,070 B2
Electrosurgical cutting instrument
Eliot F. Bloom, Hopkinton, NH (US)
Assigned to Medtronic Advanced Energy LLC, Minneapolis, MN (US)
Filed by Medtronic Advanced Energy LLC, Minneapolis, MN (US)
Filed on Oct. 26, 2023, as Appl. No. 18/495,559.
Application 18/495,559 is a continuation of application No. 17/066,831, filed on Oct. 9, 2020, granted, now 11,864,824.
Application 17/066,831 is a continuation of application No. 14/632,460, filed on Feb. 26, 2015, granted, now 10,813,686, issued on Oct. 27, 2020.
Claims priority of provisional application 61/944,863, filed on Feb. 26, 2014.
Prior Publication US 2024/0050149 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1485 (2013.01) [A61B 18/148 (2013.01); A61B 2018/00208 (2013.01); A61B 2018/00327 (2013.01); A61B 2018/00565 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00607 (2013.01); A61B 2018/0063 (2013.01); A61B 2218/002 (2013.01); A61B 2218/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electrosurgical device for surgically cutting and sealing tissue comprising:
an outer shaft comprising a lumen and a distal end comprising a cutting edge forming an outer shaft window;
an inner shaft rotatably disposed within the lumen of the outer shaft, the inner shaft having a distal portion comprising an inner shaft cutter forming an inner shaft window;
a fluid passage defined between the outer shaft and the inner shaft, the fluid passage being open to a fluid distribution point located proximal the outer shaft window; and
first and second electrodes that are electrically isolated from one another and positioned at a distal end region of the electrosurgical device, wherein the second electrode is exposed in the window of the outer shaft while in a closed position;
wherein the electrosurgical device is configured to provide:
a cutting state that cuts tissue at an operative site, and
a hemostasis state that achieves hemostasis at the operative site by arranging the electrosurgical device in the closed position in which the inner shaft cutter is shielded, RF energy is applied by the first and second electrodes to tissue of the operative site, and fluid is dispensed from the fluid distribution point and across at least one of the first and second electrodes.