Powered surgical stapling device with end effector articulation
AssigneeCovidien LP
InventorDavid A. NICHOLAS
Life of this patent
Estimating the term…
Abstract
A powered stapling device includes an adapter assembly that includes an outer tube, a shifter mechanism, an articulation gear, and a rotate gear. The rotate gear is secured to the outer tube such that rotation of the rotate gear causes rotation of the outer tube. The shifter mechanism includes a shifter shaft that supports a shifter gear. The shifter shaft is movable to move the shifter gear between a rotate position in which rotation of the articulation gear causes rotation of the rotate gear and the outer tube and an articulate position in which the shifter gear prevents or locks rotation of the rotate gear and the outer tube.
Claims21
-20. (canceled)
An adapter assembly for use with a powered surgical device, comprising:
- a coupling assembly including a body defining a bore;
- an outer tube rotatable relative to the coupling assembly;
- an articulation gear rotatable about a longitudinal axis of the adapter assembly;
- a rotate gear coupled to the outer tube such that rotation of the rotate gear causes rotation of the outer tube;
- a shifter mechanism received within the bore of the body, the shifter mechanism including a shifter shaft and a shifter gear secured to the shifter shaft, the shifter shaft being movable between a rotate position and an articulate position,
- wherein, in the rotate position, the shifter gear is coupled with the articulation gear and the rotate gear such that rotation of the articulation gear causes rotation of the rotate gear and the outer tube;
- and
- wherein, in the articulate position, the shifter gear remains engaged with the rotate gear and is disengaged from the articulation gear to prevent rotation of the rotate gear and the outer tube.
An adapter assembly for use with a powered surgical device, comprising:
- an outer tube having a proximal portion and a distal portion;
- an end effector supported on the distal portion of the outer tube and pivotable about an articulation axis transverse to a longitudinal axis;
- and
- an articulation mechanism positioned at least partially within the outer tube and operably coupled to an actuator, the articulation mechanism including:
- an articulation gear rotatable in response to actuation of the actuator;
- a barrel cam fixedly supported within the articulation gear, the barrel cam defining first and second cam channels;
- a first link extension having a proximal portion and a distal portion, the distal portion coupled to the end effector, the proximal portion supporting a first cam member received in the first cam channel;
- and
- a second link extension having a proximal portion and a distal portion, the distal portion coupled to the end effector, the proximal portion supporting a second cam member received in the second cam channel;
- wherein rotation of the barrel cam drives longitudinal movement of the first link extension and the second link extension to articulate the end effector about the articulation axis.
Dependencies are inferred from the claim text.