Synthes 2.0mm Cannulated Drill Bit | QC Shank | 150mm | 310.221 The Synthes 310.221 is a high-precision surgical cutting instrument engineered for the accurate preparation of pilot holes in small bone structures. As a 2.0mm diameter bit with a 150mm length, it is a critical component of the Synthes 2.4mm and 3.0mm Headless Compression Screw (HCS) systems. The cannulated design features a 1.2mm internal bore, allowing the bit to slide perfectly over a 1.1mm guide wire. This ensures that the longitudinal axis of the drill hole remains perfectly coaxial with the pre-placed wire, preventing "wandering" in dense cortical bone and ensuring the subsequent screw follows the intended trajectory exactly. Key Specifications Manufacturer: Synthes (DePuy Synthes) Model / REF: 310.221 Diameter: 2.0 mm Overall Length: 150 mm (approx. 6 inches) Cannulation: 1.2 mm (Compatible with 1.1mm Guide Wires) Shank Type: Quick Connect (QC) Material: Hardened Surgical-Grade Stainless Steel Compatibility: 2.4mm / 3.0mm Headless Compression Screws Quantity: 1 Each Technical & Clinical Advantages Guided Accuracy: By drilling over a guide wire, the surgeon can maintain the exact center of narrow anatomical corridors, such as the scaphoid bone or phalangeal shafts. This minimizes the risk of cortical blowout or articular penetration. Quick-Coupling (QC) Interface: The standardized QC shank allows for instantaneous, one-handed attachment to surgical power tool handpieces (e.g., Synthes Colibri or Battery Driven Power). This reduces intraoperative transition time between K-wire placement and drilling. Extended Surgical Reach: The 150mm length provides ample clearance for percutaneous "blind" drilling or for reaching deep surgical sites without the power tool head interfering with the soft-tissue envelope. Advanced Flute Geometry: The precision-ground flutes are optimized for rapid bone chip evacuation through the surgical corridor. This reduces friction-generated heat, mitigating the risk of thermal osteonecrosis and promoting faster biological union. Structural Rigidity: Despite its slender 2.0mm profile, the hardened stainless steel construction provides the necessary stiffness to resist bending, ensuring a straight and true pilot hole even in dense cortical bone. Applications Hand & Wrist Surgery: Pilot hole preparation for scaphoid fractures and small-bone fusions using 3.0mm HCS hardware. Foot & Ankle Surgery: Guided drilling for metatarsal osteotomies (e.g., Weil or Chevron) and phalangeal fracture fixation. Minimally Invasive Trauma: Percutaneous fixation of small fragment fractures where image guidance is paramount. Headless Screw Fixation: Creating the initial path for headless compression screws in intra-articular fractures. Condition & Quality Assurance Status: NEW. Integrity: This instrument is unused and maintains its factory-specified straightness and cutting edge sharpness. The 1.2mm internal channel is verified clear for smooth guide wire passage. Sterilization Note: This is a NON-STERILE, REUSABLE instrument. It MUST be thoroughly cleaned (including the internal cannulation) and sterilized via validated steam autoclave protocols in accordance with facility guidelines and Synthes’ Instructions for Use (IFU) prior to clinical application in 2026. Professional Standards: With over 25 years of experience in orthopedic logistics, Primis Medical ensures all surgical instruments are stored and handled to preserve their mechanical precision and edge integrity. Shipping & Handling Secure Logistics: Shipped in a rigid, protective sleeve to ensure the 150mm shaft remains perfectly straight and the cutting tip remains pristine during transit. Fast Dispatch: Ships within 1 business day.