US 11,051,834 B2
Tissue specimen retrieval device
Jacob C. Baril, Norwalk, CT (US); Saumya Banerjee, Hamden, CT (US); Matthew A. Dinino, Newington, CT (US); Roy J. Pilletere, North Haven, CT (US); Justin J. Thomas, New Haven, CT (US); and George S. Matta, Plainville, MA (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by COVIDIEN LP, Mansfield, MA (US)
Filed on May 17, 2019, as Appl. No. 16/415,715.
Prior Publication US 2020/0360031 A1, Nov. 19, 2020
Int. Cl. A61B 17/221 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 17/00234 (2013.01); A61B 2017/00287 (2013.01); A61B 2017/2212 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tissue specimen retrieval device, comprising:
a first shaft;
a second shaft telescopically movable relative to the first shaft, the second shaft supporting an end effector assembly at a distal end thereof and the second shaft is movable relative to the first shaft between a retracted position, wherein the end effector assembly is disposed within the first shaft, and a deployed position, wherein the end effector assembly extends distally from the first shaft in an expanded, substantially circular configuration, the end effector assembly including:
a bag brim including first and second wire supports each having first and second ends that operably engage the distal end of the second shaft, the bag brim transitionable from a first collapsed configuration for disposition within the first shaft to the expanded, substantially circular configuration upon deployment from the first shaft, the first and second wire supports each including at least two torsion springs disposed between each of the first and second ends of their respective wire support of the first and second wire supports, the at least two torsion springs of the first and second wire supports cooperating to facilitate automatic expansion of the bag brim to the expanded, substantially circular configuration upon deployment thereof from within the first shaft.