US 12,471,943 B2
Laparoscopic tissue cutting device
Roy J. Pilletere, Middletown, CT (US); Jacob C. Baril, Norwalk, CT (US); Matthew A. Dinino, Newington, CT (US); Justin J. Thomas, New Haven, CT (US); Garrett P. Ebersole, Hamden, CT (US); Saumya Banerjee, Collinsville, CT (US); and Nicolette L. Roy, Windsor Locks, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 12, 2021, as Appl. No. 17/498,853.
Claims priority of provisional application 63/126,609, filed on Dec. 17, 2020.
Prior Publication US 2022/0192693 A1, Jun. 23, 2022
Int. Cl. A61B 17/32 (2006.01)
CPC A61B 17/320016 (2013.01) [A61B 2017/320028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tissue cutting device comprising:
an elongate shaft assembly including:
an elongate shaft defining first and second lumens; and
a support extending distally from the elongate shaft;
an actuation assembly including:
a pivoting rod slidably extending through the first lumen; and
an axial rod slidably extending through the second lumen of the elongate shaft; and
a blade assembly including:
a blade to cut tissue; and
a body supporting the blade, the body including a camming portion slidably engaging the support of the elongate shaft assembly, the body operatively coupled to the pivoting rod and the axial rod of the actuation assembly,
wherein a first axial displacement of the axial rod pivots the blade between a closed configuration, in which, a distal portion of the blade engages the support of the elongate shaft assembly, and an open configuration, in which, the blade is pivoted to receive tissue between the blade and the support, and wherein a second axial displacement of the axial rod imparts concomitant axial displacement to the blade assembly to cut tissue.