US 11,883,051 B2
Hollow graspers
Joseph T. Eisinger, Northford, CT (US); and Justin Williams, Southbury, CT (US)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Jul. 1, 2021, as Appl. No. 17/364,948.
Claims priority of provisional application 63/069,342, filed on Aug. 24, 2020.
Prior Publication US 2022/0054157 A1, Feb. 24, 2022
Int. Cl. A61B 17/20 (2006.01); A61B 17/00 (2006.01); A61B 17/29 (2006.01)
CPC A61B 17/2909 (2013.01) [A61B 2017/00862 (2013.01); A61B 2017/2902 (2013.01); A61B 2017/2936 (2013.01); A61B 2017/2947 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surgical grasper comprising:
a handle assembly including a first handle and a second handle;
an inner shaft assembly including an inner shaft defining a lumen for passage of a surgical instrument and an engaging portion peripherally arranged with a distal portion of the inner shaft such that the engaging portion conforms to a contour of the inner shaft, a proximal portion of the inner shaft pivotably coupled to the first handle;
an outer shaft slidably disposed about the inner shaft, the outer shaft including a proximal portion fixedly secured to the second handle, and a distal portion including supporting fingers, each of the supporting fingers defining apertures; and
a grasper assembly operatively coupled to the supporting fingers of the outer shaft, the grasper assembly including a first jaw and a second jaw, the first jaw including a first grasping portion and a first pair of extension members extending proximally from the first grasping portion such that the first pair of extension members selectively engage the engaging portion of the inner shaft assembly, the second jaw including a second grasping portion and a second pair of extension members extending proximally from the second grasping portion such that the second pair of extension members selectively engage the engaging portion of the inner shaft assembly, wherein the first pair of extension members and the second pair of extension members each define bores, the bores of the first and second pair of extension members dimensioned to receive pins extending through the apertures of the supporting fingers such that axial displacement of the inner shaft transitions the grasper assembly between an approximated configuration and a spaced apart configuration.