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US 12,616,475 B2Granted
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.
Claims20
A powered surgical device comprising:
- a handle assembly;
- and
- an adapter assembly defining a longitudinal axis and including:
- a coupling assembly having a body defining a central through bore, a second bore, and a third bore, the body non-rotatably coupled to the handle assembly;
- a drive assembly received within the central through bore, the drive assembly including a drive screw and a drive member threadedly coupled to the drive screw, the drive member longitudinally movable along the drive screw in response to rotation of the drive screw;
- a drive shaft supporting a drive gear, the drive shaft positioned within the second bore;
- an outer tube having a proximal portion and a distal portion, the outer tube rotatable in relation to the coupling assembly;
- an articulation mechanism positioned within the outer tube, the articulation mechanism including:
- an articulation gear engaged with the drive gear and rotatable in response to rotation of the drive gear;
- a barrel cam fixedly supported within the articulation gear, the barrel cam defining first and second cam channels;
- and
- a first link extension having a proximal portion and a distal portion, the proximal portion supporting a first cam member that is received in the first cam channel;
- and
- a second link extension having a proximal portion and a distal portion, the proximal portion of the second link extension supporting a second cam member that is received in the second cam channel;
- a rotate gear coupled to the outer tube and rotatable in relation to the body of the coupling assembly to rotate the outer tube in relation to the coupling assembly;
- and
- a shifter mechanism received within the third bore of the body of the coupling assembly and including a shifter shaft and a shifter gear secured to the shifter shaft, the shifter shaft movable between a rotate position in which the shifter gear is coupled with the articulation gear and the rotate gear and an articulate position in which the shifter gear is engaged with the rotate gear and disengaged from the articulation gear.
14 more elements
An adapter assembly comprising:
- a coupling assembly having a body defining a central through bore, a second bore, and a third bore, the body non-rotatably coupled to the handle assembly;
- a rotation member rotatably supported in relation to the body of the coupling assembly;
- a drive assembly received within the central through bore, the drive assembly including a drive screw and a drive member threadedly coupled to the drive screw, the drive member longitudinally movable along the drive screw in response to rotation of the drive screw;
- a drive shaft supporting a drive gear, the drive shaft positioned within the second bore;
- an outer tube having a proximal portion and a distal portion, the outer tube secured to the rotation member and rotatable in relation to the coupling assembly;
- an articulation mechanism positioned within the outer tube, the articulation mechanism including:
- an articulation gear engaged with the drive gear and rotatable in response to rotation of the drive gear;
- a barrel cam fixedly supported within the articulation gear, the barrel cam defining first and second cam channels;
- and
- a first link extension having a proximal portion and a distal portion, the proximal portion supporting a first cam member that is received in the first cam channel;
- and
- a second link extension having a proximal portion and a distal portion, the proximal portion of the second link extension supporting a second cam member that is received in the second cam channel;
- a rotate gear coupled to the outer tube and rotatable in relation to the body of the coupling assembly to rotate the outer tube and the rotation member in relation to the coupling assembly;
- and
- a shifter mechanism received within the third bore of the body of the coupling assembly and including a shifter shaft and a shifter gear secured to the shifter shaft, the shifter shaft movable between a rotate position in which the shifter gear is coupled with the articulation gear and the rotate gear and an articulate position in which the shifter gear is engaged with the rotate gear and disengaged from the articulation gear.
12 more elements
A powered surgical device comprising:
- a handle assembly;
- and
- an adapter assembly defining a longitudinal axis and including:
- a coupling assembly having a body defining a central through bore, a second bore, and a third bore, the body non-rotatably coupled to the handle assembly;
- a drive assembly received within the central through bore, the drive assembly including a drive screw and a drive member threadedly coupled to the drive screw, the drive member longitudinally movable along the drive screw in response to rotation of the drive screw;
- a drive shaft supporting a drive gear, the drive shaft positioned within the second bore;
- an outer tube having a proximal portion and a distal portion, the outer tube rotatable in relation to the coupling assembly;
- an articulation mechanism positioned within the outer tube, the articulation mechanism including:
- an articulation gear engaged with the drive gear and rotatable in response to rotation of the drive gear;
- a barrel cam fixedly supported within the articulation gear, the barrel cam defining first and second cam channels;
- and
- a first link extension having a proximal portion and a distal portion, the proximal portion supporting a first cam member that is received in the first cam channel;
- and
- a second link extension having a proximal portion and a distal portion, the proximal portion of the second link extension supporting a second cam member that is received in the second cam channel;
- a rotate gear coupled to the outer tube and rotatable in relation to the body of the coupling assembly to rotate the outer tube in relation to the coupling assembly;
- a shifter mechanism received within the third bore of the body of the coupling assembly and including a shifter shaft and a shifter gear secured to the shifter shaft, the shifter shaft movable between a rotate position in which the shifter gear is coupled with the articulation gear and the rotate gear and an articulate position in which the shifter gear is engaged with the rotate gear and disengaged from the articulation gear;
- and
- an end effector secured to the distal portion of the adapter assembly about an articulation axis that is transverse to the longitudinal axis, the end effector including an anvil assembly and a cartridge assembly, the first and second link extensions coupled to the end effector and movable to articulate the end effector about the articulation axis.
15 more elements
Dependencies are inferred from the claim text.