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 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 including a switch for selecting between the first mode of operation, in which the cartridge assembly and anvil assembly are movable back and forth between the open and closed positions, and the second mode of operation, in which the cartridge assembly and anvil assembly clamp tissue;
a cam assembly operably associated with a vertical pawl, the vertical pawl being movable from 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
an arm movable between a first position engaged with the actuation shaft and a second position disengaged from the actuation shaft, the cam assembly configured to move the vertical pawl to its second position upon movement of the movable handle when the arm is in its first position and the cam assembly being configured to allow movement of the vertical pawl from its second position to its first position upon movement of the movable handle when the arm is in its second position.
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.
1678 Citations
20 Claims
-
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 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 including a switch for selecting between the first mode of operation, in which the cartridge assembly and anvil assembly are movable back and forth between the open and closed positions, and the second mode of operation, in which the cartridge assembly and anvil assembly clamp tissue; a cam assembly operably associated with a vertical pawl, the vertical pawl being movable from 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 an arm movable between a first position engaged with the actuation shaft and a second position disengaged from the actuation shaft, the cam assembly configured to move the vertical pawl to its second position upon movement of the movable handle when the arm is in its first position and the cam assembly being configured to allow movement of the vertical pawl from its second position to its first position upon movement of the movable handle when the arm is in its second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. 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 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 including a switch for selecting between the first mode of operation, in which the cartridge assembly and anvil assembly are movable back and forth between the open and closed positions, and the second mode of operation, in which the cartridge assembly and anvil assembly clamp tissue; a cam assembly operably associated with a vertical pawl, the vertical pawl being movable from 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 pawl arm movable between a first position engaged with the actuation shaft and a second position disengaged from the actuation shaft, the cam assembly configured to move the vertical pawl to its second position upon movement of the movable handle when the pawl arm is in its first position and from its second position to its first position upon movement of the movable handle when the pawl arm is in its second position, wherein movement of the movable handle during the first mode of operation effects movement of tool assembly between the open and closed positions, and wherein movement of the movable handle away from the stationary handle during the second mode of operation maintains the tool assembly in the closed position and at least one subsequent movement of the movable handle toward the stationary handle during the second mode of operation fires staples from the tool assembly.
-
-
20. A surgical device comprising:
-
a handle assembly including a housing defining a stationary handle, a shaft, and a movable handle, the movable handle being operably associated with the shaft such that movement of the movable handle effects axial movement of the shaft; a tool assembly mounted to a distal end of an elongated member extending distally from the handle assembly, the tool assembly including 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; and a mode selection mechanism supported within the housing, the mode selection mechanism including a switch, a cam assembly, and a pawl arm operably associated with the switch, the switch being movable between a first position and a second position, the first position being associated with a first mode of operation of the device and the second position being associated with a second mode of operation of the device, the shaft being engaged by the pawl arm in the first mode of operation and disengaged by the pawl arm in the second mode of operation, the cam assembly being operably associated with a vertical pawl, the vertical pawl being movable from a first position engaged with the shaft to prevent axial movement of the shaft to a second position disengaged from the shaft to permit axial movement of the shaft, the cam assembly configured to move the vertical pawl to its second position upon movement of the movable handle when the pawl arm is in its first position and from its second position to its first position upon movement of the movable handle when the pawl arm is in its second position, wherein movement of the movable handle during the first mode of operation effects movement of tool assembly between the open and closed positions, and wherein movement of the movable handle away from the stationary handle during the second mode of operation maintains the tool assembly in the closed position and at least one subsequent movement of the movable handle toward the stationary handle during the second mode of operation fires staples from the tool assembly.
-
Specification