Synthes 310.66 Drill Bit Quick Connect Cannulated 4.5mm Orthopedic 6-5/8"

Synthes 310.66 Drill Bit Quick Connect Cannulated 4.5mm Orthopedic 6-5/8"

• Model: 310.66
• 4.5mm
• Overall Length: 6-5/8 inches

The Synthes 310.66 is a cannulated twist drill bit specifically designed for use with cannulated screw systems in orthopedic surgery. The 4.5 mm diameter places it among the larger bits used for screws that require substantial cortical purchase or when fixing larger bone fragments. Its 1.7 mm cannulated lumen allows the drill bit to slide over a guide wire (K‑wire), facilitating precise alignment and guidance into the correct trajectory in the bone before the screw is inserted. The quick‑connect coupling enables fast changes or attachment to compatible drill handles or power sources, streamlining the surgical workflow.

With an overall length of ~170 mm (about 6‑5/8 inches), it provides sufficient reach in most standard surgical exposures without being unwieldy. The length allows drilling through soft tissue and bone while maintaining adequate stability from the surgeon’s hand or a power device. Constructed from stainless steel, it balances hardness for drilling, resistance to bending/torsion, and durability under sterilization and repeated use. The quick‑connect mechanism must be precise and robust to avoid any play or wobble in the connection, which could lead to drilling inaccuracies or damage.

Clinically, this drill bit’s primary role is in preparing the pilot or screw path for a 4.5 mm cannulated screw, often in orthopedic fracture fixation of long bones (like the femur, tibia, or humerus) or in other settings where larger screws are needed. Because the cannulated system depends on guide wires for alignment, accuracy, and minimally invasive capability, the 310.66 helps reduce soft tissue disturbance and ensures screws are placed in the intended position. The quick‑connect feature enhances efficiency in the operating room by reducing time spent swapping instruments, while the stainless steel build ensures it can withstand the stresses of drilling in dense cortical bone.

This item is slightly used and in excellent condition.