US 11,701,119 B2
Powered stapling device with rack release
David M. Chowaniec, Rocky Hill, CT (US); Xingrui Chen, Glastonbury, CT (US); Andriy Buyda, East Haven, CT (US); Saumya Banerjee, Hamden, CT (US); and Brian J. Creston, Madison, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on May 26, 2021, as Appl. No. 17/331,072.
Prior Publication US 2022/0378423 A1, Dec. 1, 2022
Int. Cl. A61B 17/072 (2006.01); A61B 17/00 (2006.01); A61B 17/29 (2006.01)
CPC A61B 17/07207 (2013.01) [A61B 2017/00398 (2013.01); A61B 2017/07257 (2013.01); A61B 2017/07271 (2013.01); A61B 2017/2943 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A powered handle assembly for a surgical device comprising:
a housing defining a first cavity;
a gear casing supported within the cavity of the housing, the gear casing defining a second cavity and a longitudinal channel that extends through the second cavity;
a motor assembly including an output shaft and a drive gear secured to the output shaft, the motor assembly secured to the gear casing, and the drive gear positioned within the second cavity;
a rack received within the longitudinal channel of the gear casing and movable through the second cavity between retracted and advanced positions;
a shaft extending through the second cavity, the shaft being axially movable between first and second positions; and
a pinion coupled to the shaft and received within the second cavity, the pinion movable within the second cavity, in response to movement of the shaft between its first and second positions, from a first position in which the pinion is directly engaged with the rack to a second position in which the pinion is disengaged from the rack.