A surgical device, comprising: a first drive shaft rotatable about a rotation axis; a first jaw, with a first end and a distal end, comprising a swivel arm sleeve attached thereto, the swivel arm sleeve comprising a bore disposed therethrough; a second jaw, with a first end mechanically coupled to the first end of the first jaw and a distal end, comprising an anvil component and a swivel arm, the swivel arm comprising an internally threaded bore and configured to move longitudinally within and relative to the swivel arm sleeve, one or both of the swivel arm and swivel arm sleeve comprising a channel disposed thereon, the channel comprising a curved portion, the clamping surfaces of the first and second jaws (80, 50) defining first and second planes, respectively, a screw with externally disposed threads; and a cam follower maintained within and extending internally within the bore of the swivel arm sleeve, a portion of the cam follower disposed within the channel, the second jaw moveable relative to the first jaw, by rotation of the first drive shaft including engagement of the screw with the bore of the swivel arm, between a closed position, wherein the first jaw and the second jaw are in contact with each other at their first ends (50a, 80a) and also at their second ends (50b, 80b), and an intermediate open position, the first and second planes remaining in parallel correspondence relative to each other and, further, a third plane extending through first and second jaws, perpendicularly intersecting first and second planes in the closed and intermediate open positions, the second jaw further moveable relative to the first jaw, between the intermediate open position and a fully opened position, wherein the second jaw is moved into non-parallel correspondence relative to the third plane, causing the distal end of the second jaw to move out of alignment with the distal end of the first jaw when the cam follower engages the curved portion of the channel. a first drive shaft rotatable about a rotation axis; a first jaw, with a first end and a distal end, comprising a swivel arm sleeve attached thereto, the swivel arm sleeve comprising a bore disposed therethrough; a second jaw, with a first end mechanically coupled to the first end of the first jaw and a distal end, comprising an anvil component and a swivel arm, the swivel arm comprising an internally threaded bore and configured to move longitudinally within and relative to the swivel arm sleeve, one or both of the swivel arm and swivel arm sleeve comprising a channel disposed thereon, the channel comprising a curved portion, the clamping surfaces of the first and second jaws (80, 50) defining first and second planes, respectively, a screw with externally disposed threads; and a cam follower maintained within and extending internally within the bore of the swivel arm sleeve, a portion of the cam follower disposed within the channel, the second jaw moveable relative to the first jaw, by rotation of the first drive shaft including engagement of the screw with the bore of the swivel arm, between a closed position, wherein the first jaw and the second jaw are in contact with each other at their first ends (50a, 80a) and also at their second ends (50b, 80b), and an intermediate open position, the first and second planes remaining in parallel correspondence relative to each other and, further, a third plane extending through first and second jaws, perpendicularly intersecting first and second planes in the closed and intermediate open positions, the second jaw further moveable relative to the first jaw, between the intermediate open position and a fully opened position, wherein the second jaw is moved into non-parallel correspondence relative to the third plane, causing the distal end of the second jaw to move out of alignment with the distal end of the first jaw when the cam follower engages the curved portion of the channel.