This specialized instrument set is designed for headless cannulated screw implantation in fracture fixation, compatible with 4.5mm and 5.2mm diameter headless screws.
The system includes 12 core tools that address the technical essentials of percutaneous screw placement—precise guidewire positioning, efficient bone channel preparation, and secure screw implantation—covering the complete workflow from guidewire insertion, graded drilling, screw channel preparation to screw tightening and final locking.
Manufactured from high-strength stainless steel, critical drilling components (e.g., tapered cannulated drills) feature optimized designs and surface treatments to ensure efficient cutting and clear radiographic visibility under fluoroscopic guidance. With a core design philosophy of "Guidewire Positioning - Graded Drilling - Screw Implantation," the system utilizes tapered drills for progressive bone channel expansion, dedicated guidewire cleaners, and quick-connect handles to achieve minimally invasive, precise, and stable implantation of headless cannulated screws.
This effectively reduces soft tissue dissection and surgical trauma, meeting the demands of metaphyseal fracture fixation, periarticular fractures (e.g., wrist, ankle), and inter-fragmentary compression fixation.
Material Excellence
Instruments are constructed from premium stainless steels (05Cr17Ni4Cu4Nb, 420B, 316L, 304), offering high fatigue resistance. Electropolished surfaces minimize tissue friction and surgical trauma.
Precision Positioning and Efficient Bone Channel Preparation System
The Ø1.9mm guidewire enables initial precise penetration and transfixation of fracture fragments, with tip design ensuring penetration capability and directional stability. Combined with tapered and standard cannulated drills, it forms a four-stage progressive bone channel expansion protocol: tapered drills achieve efficient bone cutting and low-resistance penetration, while standard drills complete final precise aperture formation, significantly improving bone channel preparation efficiency. Guidewire drill sleeves and universal drill sleeves provide continuous drilling stability, preventing soft tissue injury and ensuring precise, controllable trajectories under fluoroscopy.
Screw Channel Optimization and Secure Implantation Assurance
The Ø1.8mm guidewire cleaner specifically removes residual bone debris from screw channels, ensuring unimpeded screw implantation and preventing insertion resistance caused by debris accumulation. Depth gauges accurately measure bone channel depth, providing data support for screw length selection. Screw holding forceps feature optimized gripping surfaces for the unique structure of headless screws, enabling secure intraoperative grasping and precise delivery. The SW3 cannulated hex driver, used with quick-connect handles, delivers high torque for efficient screw insertion and final locking, with its cannulated design allowing continuous operation along the guidewire while maintaining axial consistency.
Modular Quick-Connect and Streamlined Operation Design
The quick-connect handle serves as the core driving hub, rapidly adapting to SW3 cannulated hex drivers and drilling tools, enabling seamless instrument switching and efficient torque transmission while reducing procedural time. All drills and drivers are manufactured from high-strength stainless steel with specialized surface treatments, balancing torsional strength and radiographic visibility to ensure operational smoothness and visual clarity in limited incision scenarios.
Comprehensive Minimally Invasive Value and Clinical Application Coverage
The set establishes a closed-loop workflow of "guidewire positioning - graded drilling - screw implantation," significantly reducing soft tissue dissection through percutaneous minimally invasive techniques, thereby lowering intraoperative bleeding and postoperative complication risks. Designed to meet the compression fixation requirements of 4.5mm/5.2mm headless screws, it addresses scenarios including metaphyseal fractures (e.g., distal radius, ankle joints), intra-articular fragment compression fixation, and minimally invasive osteosynthesis of small fragments—particularly suitable for operations in spatially constrained anatomical regions. The instrument case provides standardized storage and sterilization assurance, enhancing surgical efficiency.
Four-Stage Drilling System Enables Efficient and Precise Bone Channel Formation
The four-stage progressive expansion protocol using tapered and standard cannulated drills significantly improves bone channel preparation efficiency: tapered drills achieve low-resistance cortical penetration with low cutting angles, while standard drills precisely calibrate the final aperture. Compared to traditional single-stage drilling, this effectively reduces operative time. The entire process relies on guidewire drill sleeves locking the guidewire trajectory, ensuring drill bits advance along the Ø1.9mm guidewire axis, eliminating directional deviation risks—particularly valuable for safe channel preparation in high-density bone regions.
Dual Assurance of Headless Screw Implantation Stability and Operational Fluidity
Screw holding forceps employ V-shaped anti-slip grooves and elastic clamping arms to achieve zero-damage secure grasping of headless screws. The SW3 cannulated hex driver combined with quick-connect handles forms a high-torque transmission module, supporting single-handed rapid assembly/disassembly and continuous tightening operations. The Ø1.8mm guidewire cleaner simultaneously removes bone debris from screw channels, effectively reducing screw insertion resistance. Combined with depth gauge measurements, this eliminates fixation strength deficiencies caused by depth errors.
Standardized Full Workflow Reduces Surgical Trauma Risks
The graded drilling process isolates soft tissues within universal drill sleeves, reducing the probability of vascular and nerve injury. The headless screw design avoids implant prominence that could irritate soft tissues, effectively lowering postoperative foreign body sensation incidence. The set adapts to confined anatomical areas like wrist and ankle, achieving a true "guidewire positioning - debris removal - screw placement" closed loop. Compared to open surgery, it effectively reduces soft tissue dissection time and accelerates postoperative functional recovery.
Broad Clinical Indications and Cost-Effectiveness Advantages
Covers dual-specification (4.5mm/5.2mm) headless screw implantation needs, suitable for intra-articular fragment compression fixation in distal radius fractures, talus fractures, and minimally invasive osteosynthesis of small fragments in pelvic, hand, and foot regions. Standardized case organization reduces instrument loss rates, while modular design minimizes backup tool requirements. A single set can meet over 90% of cannulated screw surgical scenarios, significantly optimizing hospital consumable management costs.
