Zimmer M/DN Distal Drill Bit | 5mm Pilot Tip | 6" Length | 2255-33-50 | Limited Use

The Zimmer 2255-33-50 is a specialized orthopedic power accessory engineered for the critical "freehand" or guided drilling of distal interlocking holes during intramedullary (IM) nailing procedures. As a core component of the Zimmer M/DN (Multi-Directional Nail) System, this 5mm drill bit is specifically designed to prepare the transverse paths required for distal locking screws in the femur, tibia, and humerus.

The defining feature of this instrument is its precision pilot tip. This geometry ensures the bit "bites" into the hard cortical bone without skidding or wandering—a vital requirement when aiming for the distal nail apertures under fluoroscopic guidance.

Key Specifications

• Manufacturer: Zimmer Biomet

• Series: M/DN™ Intramedullary Fixation System

• Model / REF: 2255-33-50

• Diameter: 5mm (Precision Ground)

• Tip Style: Pilot-Point (Self-Centering)

• Overall Length: 6 Inches (152 mm)

• Interface: Standard Quick-Connect (AO-Style)

• Material: High-Carbon Surgical Stainless Steel

• Condition: Limited Use (Excellent Condition)

Technical & Clinical Advantages

• Self-Centering Pilot Tip: The 5mm pilot point allows for immediate cortical engagement. This is essential for "perfect circle" fluoroscopic techniques, where even a slight deviation can cause the bit to miss the nail's distal hole or deflect off the intramedullary nail itself.

• Optimized 6-Inch Reach: The 6-inch length provides the ideal balance between anatomical reach and mechanical rigidity. It offers enough clearance for soft-tissue protectors and targeting gates while minimizing "drill whip" or vibration during high-speed rotation.

• High-Efficiency Flute Design: Engineered for rapid chip evacuation, the flutes prevent bone-packing and frictional heat buildup, reducing the risk of thermal necrosis during the penetration of dense cortical bone.

• M/DN System Compatibility: This bit is factory-calibrated to match the tolerances of the M/DN nail series, ensuring that the resulting 5mm hole perfectly accommodates the system's corresponding locking screws for a stable, "no-play" construct.

• Standard Quick-Connect Shank: The universal AO-style interface allows for instantaneous attachment to all standard surgical power drivers and manual T-handles, streamlining the transition from nail insertion to distal locking.

Applications

• Tibial Nailing: Distal locking hole preparation for M/DN tibial nails.

• Femoral Nailing: Transverse drilling for retrograde or antegrade distal fixation.

• Humeral Nailing: Precise interlocking in the distal humerus where neurovascular proximity requires absolute drill control.

Condition & Quality Assurance

• Status: Limited Use – Excellent Condition.

• Maintenance: This instrument has been meticulously inspected for flute sharpness, shaft straightness, and quick-connect integrity. It exhibits characteristics of a new or minimally handled unit, with no significant "black dots" or wear patterns on the cutting edges.

• Professional Standards: With over 25 years of experience in surgical trauma and hospital materials, Primis Medical ensures all specialized Zimmer power accessories are function-verified and ultrasonically cleaned prior to shipment.

Shipping & Handling

• Secure Logistics: Shipped in protective, rigid packaging to ensure the precision pilot tip and 5mm fluting remain in factory-standard condition during transit.

• Fast Dispatch: Ships within 1 business day.