US 11,890,009 B2
Loading unit and adapter with modified coupling assembly
John W. Beardsley, Wallingford, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Mar. 24, 2022, as Appl. No. 17/703,180.
Application 17/703,180 is a continuation of application No. 16/800,100, filed on Feb. 25, 2020, granted, now 11,284,892.
Claims priority of provisional application 62/828,204, filed on Apr. 2, 2019.
Prior Publication US 2022/0211372 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/072 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/072 (2013.01) [A61B 2017/0053 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/07257 (2013.01); A61B 2017/07271 (2013.01); A61B 2017/07285 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A surgical device comprising:
an adapter assembly including a proximal portion and a distal portion, the proximal portion including a housing and the distal portion including a base member pivotally supported by the housing, the base member defining a longitudinal slot and spaced keyways that are positioned on opposite sides of the longitudinal slot, the spaced keyways configured to receive locking tabs of a tool assembly to releasably secure the tool assembly to the base member; and
a drive assembly extending between the housing and the base member, the drive assembly having a distal portion including a working end having an upper beam, a lower beam, and a vertical strut extending between the upper beam and the lower beam, the drive assembly being movable between a retracted position in which the vertical strut of the working end of the drive assembly is positioned within the longitudinal slot of the base member and an advanced position in which the working end is positioned distally of the base member.