Grasping jaw mechanism
First Claim
1. A surgical device including an actuation shaft operably associated with a moveable handle, comprising:
- an elongated member defining a longitudinal axis;
a tool assembly mounted at a distal end of the elongated member, the tool assembly having a cartridge assembly having a plurality of staples supported therein and an anvil assembly, the anvil assembly or the cartridge assembly being movable in relation to the other of the anvil assembly or the cartridge assembly between open and closed positions;
a mode selection mechanism configured to alternate the surgical device between a first mode of operation and a second mode of operation, the mode selection mechanism movable between a first position engaged with the actuation shaft and a second position disengaged from the actuation shaft,the mode selection mechanism being movable to the second position prior to movement of the tool assembly from the open position to the closed position and subsequent movement of the movable handle returning the mode selection mechanism to the first position and switching the surgical device to the second mode of operation, the movable handle being moveable while the surgical device is in the second mode of operation to fire staples from the tool assembly,the mode selection mechanism including a sliding actuator operably associated with a pivotable pawl, the pivotable pawl configured to selectively engage the actuation shaft upon movement of the sliding actuator, and wherein, when the mode selection mechanism is in the first position, the pivotable pawl is received within a first slot disposed in the actuation shaft when the surgical device is in the first mode of operation and is pivotally biased downward by a second slot disposed in the actuation shaft when the surgical device is in the second mode of operation such that subsequent movement of the movable handle advances the actuation shaft distally to fire staples from the tool assembly.
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Accused Products
Abstract
A surgical device is disclosed which includes a handle assembly, an elongated member and a disposable loading unit. The handle assembly includes a mode selection mechanism configured to alternate the surgical device between a first grasping mode of operation and a second clamping mode of operation. The handle assembly includes a rotation control member and an articulation lever. The rotation control member is configured to facilitate rotation of the elongated member with respect to the handle assembly. The articulation lever is configured to facilitate articulation of the tool assembly about an axis substantially perpendicular to the longitudinal axis of elongated member. In one embodiment, the tool assembly includes a cartridge assembly having a plurality of staples and an anvil assembly configured to clamp and staple tissue in the second clamping mode of operation of the device.
103 Citations
13 Claims
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1. A surgical device including an actuation shaft operably associated with a moveable handle, comprising:
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an elongated member defining a longitudinal axis; a tool assembly mounted at a distal end of the elongated member, the tool assembly having a cartridge assembly having a plurality of staples supported therein and an anvil assembly, the anvil assembly or the cartridge assembly being movable in relation to the other of the anvil assembly or the cartridge assembly between open and closed positions; a mode selection mechanism configured to alternate the surgical device between a first mode of operation and a second mode of operation, the mode selection mechanism movable between a first position engaged with the actuation shaft and a second position disengaged from the actuation shaft, the mode selection mechanism being movable to the second position prior to movement of the tool assembly from the open position to the closed position and subsequent movement of the movable handle returning the mode selection mechanism to the first position and switching the surgical device to the second mode of operation, the movable handle being moveable while the surgical device is in the second mode of operation to fire staples from the tool assembly, the mode selection mechanism including a sliding actuator operably associated with a pivotable pawl, the pivotable pawl configured to selectively engage the actuation shaft upon movement of the sliding actuator, and wherein, when the mode selection mechanism is in the first position, the pivotable pawl is received within a first slot disposed in the actuation shaft when the surgical device is in the first mode of operation and is pivotally biased downward by a second slot disposed in the actuation shaft when the surgical device is in the second mode of operation such that subsequent movement of the movable handle advances the actuation shaft distally to fire staples from the tool assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification