Grasping jaw mechanism
First Claim
1. A surgical device comprising:
- a handle assembly including an actuation shaft, a stationary handle, and a movable handle, the movable handle being operably associated with the actuation shaft such that movement of the movable handle effects axial movement of the actuation shaft;
an elongated member extending distally from the handle assembly, the elongated member defining a longitudinal axis;
a tool assembly mounted to 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, at least one of the anvil assembly and the cartridge assembly being movable in relation to each other between open and closed positions;
a vertical pawl movable between a first position engaged with the actuation shaft to prevent axial movement of the actuation shaft and a second position disengaged from the actuation shaft to permit axial movement of the actuation shaft; and
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 such that upon movement of the tool assembly to the closed position the vertical pawl is movable to the first position to prevent axial movement of the actuation shaft and subsequent movement of the movable handle returns the mode selection mechanism to the first position to switch 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.
2 Assignments
0 Petitions
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.
304 Citations
20 Claims
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1. A surgical device comprising:
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a handle assembly including an actuation shaft, a stationary handle, and a movable handle, the movable handle being operably associated with the actuation shaft such that movement of the movable handle effects axial movement of the actuation shaft; an elongated member extending distally from the handle assembly, the elongated member defining a longitudinal axis; a tool assembly mounted to 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, at least one of the anvil assembly and the cartridge assembly being movable in relation to each other between open and closed positions; a vertical pawl movable between a first position engaged with the actuation shaft to prevent axial movement of the actuation shaft and a second position disengaged from the actuation shaft to permit axial movement of the actuation shaft; and 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 such that upon movement of the tool assembly to the closed position the vertical pawl is movable to the first position to prevent axial movement of the actuation shaft and subsequent movement of the movable handle returns the mode selection mechanism to the first position to switch 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A surgical device comprising:
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a handle assembly including an actuation shaft, a stationary handle, and a movable handle, the movable handle being operably associated with the actuation shaft such that movement of the movable handle effects axial movement of the actuation shaft; an elongated member extending distally from the handle assembly, the elongated member defining a longitudinal axis; a tool assembly mounted to 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, at least one of the anvil assembly and the cartridge assembly being movable in relation to each other between open and closed positions; a vertical pawl movable between an extended position engaged with the actuation shaft to prevent axial movement of the actuation shaft and a retracted position disengaged from the actuation shaft to permit axial movement of the actuation shaft; and 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 having a sliding actuator disposed on the movable handle and operably associated with a grasping pawl, the sliding actuator moveable between an extended position such that the grasping pawl is engaged with the actuation shaft and a retracted position such that the grasping pawl is disengaged from the actuation shaft, the sliding actuator being movable to the retracted position prior to movement of the tool assembly from the open position to the closed position such that upon movement of the tool assembly to the closed position the vertical pawl is movable to the extended position to prevent axial movement of the actuation shaft and subsequent movement of the movable handle returns the slide actuator to the extended position to switch 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. - View Dependent Claims (16)
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17. A surgical device comprising:
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a handle assembly including an actuation shaft, a stationary handle, and a movable handle, the movable handle being operably associated with the actuation shaft and movable between an open position in spaced relation to the stationary handle and a closed position approximated with the stationary handle such that movement of the movable handle effects axial movement of the actuation shaft; an elongated member extending distally from the handle assembly, the elongated member defining a longitudinal axis; a tool assembly mounted to 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, at least one of the anvil assembly and the cartridge assembly being movable in relation to each other between open and closed positions; a vertical pawl movable between an extended position engaged with the actuation shaft to prevent axial movement of the actuation shaft and a retracted position disengaged from the actuation shaft to permit axial movement of the actuation shaft; a camming mechanism operably associated with the vertical pawl and configured to move between a first position disengaged from the vertical pawl to permit movement of the vertical pawl to the extended position and a second position engaged with the vertical pawl to retain the vertical pawl in the second position; and 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 having a sliding actuator disposed on the movable handle and operably associated with a grasping pawl, the sliding actuator moveable between an extended position such that the grasping pawl is engaged with the actuation shaft and a retracted position such that the grasping pawl is disengaged from the actuation shaft, the sliding actuator being movable, while the device is in the first mode of operation, to the retracted position prior to movement of the movable handle to the closed position such that upon movement of the movable handle to the closed position and subsequent movement of the camming mechanism to the first position, the vertical pawl moves to the extended position to prevent axial movement of the actuation shaft and subsequent movement of the movable handle to the open position returns the slide actuator to the extended position to switch the surgical device to the second mode of operation, the movable handle being moveable to the closed position while the surgical device is in the second mode of operation to fire staples from the tool assembly. - View Dependent Claims (18, 19, 20)
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Specification