Karl Schumacher Tissue Forceps Precisely ground interlocking tungsten carbide inserts are perfect for securely grasping and pulling the needle during suture placement (TIF0963). Eight sharpened, interlocking teeth on each edge firmly grasp tissue without puncture. Retractors (Ronnau, Austin, Large & Small Wieder Tongue, Minnesota) Choose from the shorter classic Minnesota or the longer, more comfortable Cawood-Minnesota