Deployment mechanism for surgical instruments
AssigneeCovidien LP
InventorAmarsinh D. Jadhav
Life of this patent
Estimating the term…
Abstract
A surgical instrument includes an end effector assembly and a deployment mechanism for deploying a proximal hub associated with an energizable member between proximal and distal positions. The deployment mechanism includes a rotatable shaft, a cord including a proximal end engaged to the rotatable shaft and a distal end engaged to the proximal hub, a biasing member positioned to bias the proximal hub towards the distal position, and a gear assembly operably coupled to the rotatable shaft. The gear assembly is configured to move the proximal hub from the distal position to the proximal position against the bias of the biasing member by rotating the rotatable shaft relative to the cord to at least partially wind-up the cord about the rotatable shaft.
Claims20
1-20. (canceled)
A surgical instrument, comprising:
- a bushing movable in a longitudinal direction between a first position and a second position for actuating a component of the surgical instrument;
- and
- an actuation mechanism configured to move the bushing between the first position and the second position, the actuation mechanism including:
- a rotatable shaft;
- a cord including a first end portion engaged to the rotatable shaft and a second end portion engaged to the bushing;
- a biasing member longitudinally aligned with the bushing, the biasing member including a fixed first end portion and a movable second end portion configured to abut the bushing and bias the bushing towards the second position;
- and
- a gear assembly operably coupled to the rotatable shaft and configured to rotate the rotatable shaft relative to the cord to at least partially wind-up the cord about the rotatable shaft to thereby move the bushing from the second position to the first position against the bias of the biasing member.
A surgical instrument, comprising:
- a bushing movable between a first position and a second position for actuating a component of the surgical instrument;
- and
- an actuation mechanism configured to move the bushing between the first position and the second position, the actuation mechanism including:
- a rotatable shaft;
- a cord including a first end portion engaged to the rotatable shaft and a second end portion engaged to the bushing;
- a cartridge slidably supporting the bushing thereon;
- a biasing member disposed within the cartridge and configured to bias the bushing towards the second position;
- and
- a gear assembly operably coupled to the rotatable shaft and configured to rotate the rotatable shaft relative to the cord to at least partially wind-up the cord about the rotatable shaft to thereby move the bushing from the second position to the first position against the bias of the biasing member.
Dependencies are inferred from the claim text.