the hammocks 1066 were not present there exists the possibility that the thin knife blades 1062 could bend and warp or kink into these gaps by placing the hammocks 1066 therebetween any possibility of impermissible bending of the knife blades 1062 is prevented fig5 is provided to show the extreme bending extent of the hammocks 1066 and the blades 1062 therebetween in a test bed made for such a purpose it is noted that the upper hammock 1066 is not utilized in an upward bend with respect to fig5 because it tracks the inside surface of the curve at the critical bending area in contrast the lower hammock 1066 is utilized to substantially prevent the knife blades 1062 therebetween two in this exemplary embodiment from impermissibly bending into the gap of the test bed because each hammock 1066 is held rigidly at either end and is made out of a substantially non elastic material e g of stainless steel it forms a sling or u201c hammock u201d that supports the bent knife blade s 1062 therebetween fig5 illustrates a cross section through the articulation lock release slide 1120 and clearly shows the distal connection bend of the unlock pullrod 1104 inside the slide 1120 in such a configuration proximal displacement of the unlock pullrod 1104 causes a corresponding proximal displacement of the slide 1120 to unlock the teeth 1121 of the slide 1120 from between the corresponding teeth 1041 on.