US 11,690,624 B2
Reload assembly injection molded strain gauge
Joseph Eisinger, Northford, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Jun. 21, 2019, as Appl. No. 16/448,485.
Prior Publication US 2020/0397439 A1, Dec. 24, 2020
Int. Cl. A61B 17/00 (2006.01); A61B 17/115 (2006.01); A61B 17/10 (2006.01); A61B 17/072 (2006.01)
CPC A61B 17/1155 (2013.01) [A61B 17/105 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/07285 (2013.01); A61B 2562/0261 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A reload assembly comprising:
a shell housing including an outer housing portion defining a cavity and having a proximal portion and a distal portion, the outer housing portion having a tubular extension that forms a proximal-most portion of the proximal portion of the outer housing portion of the shell housing and is configured to receive a distal portion of a stapling device, the proximal-most portion of the outer housing portion having a diameter that is smaller than a diameter of the distal portion of the outer housing;
a strain gauge molded into the tubular extension of the shell housing;
a staple cartridge supported on the distal portion of the shell housing and having an annular configuration;
a plurality of staples received within the staple cartridge;
a staple pushing member supported within the cavity defined by the shell housing, the staple pushing member defining a through bore;
a knife carrier supported within the through bore of the staple pushing member, the knife carrier being movable between retracted and advanced positions;
a knife supported on the knife carrier, the knife being movable with the knife carrier between the retracted and advanced positions and having an annular configuration; and
a coupling mechanism extending about the tubular extension of the shell housing, the coupling mechanism adapted to secure the reload assembly to a stapling device, the reload assembly being separable from the adaptor assembly such that the reload assembly including the strain gauge is disposable;
wherein the strain gauge is positioned such that when the reload assembly is clamped and fired, firing and clamping forces are translated through the shell housing and through the strain gauge.