This comprehensive instrument set is specifically engineered for minimally invasive fixation of small bone fractures using 3.5-4.5mm diameter cannulated screws.
The system includes 29 core components that address the technical challenges of small fragment fixation—including precise guidewire stabilization, efficient bone channel preparation, and anti-stripping screw locking.
It covers the complete closed-loop workflow from guidewire positioning, graded bone reaming, and tapping to secure screw implantation. Manufactured from medical-grade stainless steel, critical cutting components (e.g., cannulated drills, taps) feature nano-coating technology for enhanced cutting efficiency and wear resistance.
With a design philosophy centered on "Minimally Invasive Precision + Graded Preparation + Anti-Stripping Locking," the system incorporates a dual-stage guidewire system, modular drill sleeve stopper mechanism, and anti-stripping screw holder to achieve stable fracture fixation while effectively preserving bone mass compared to conventional techniques.
Ideal for delicate procedures including hand and foot fracture fixation, intra-articular fragment reduction, and percutaneous pelvic/acetabular screw placement.
Material Excellence
Instruments are manufactured from premium stainless steels (05Cr17Ni4Cu4Nb, 420B, 316L, 304), offering high fatigue resistance. Electropolished surfaces minimize tissue friction and intraoperative damage.
Graded Precision Positioning System
The dual-stage guidewire system (Ø1.2mm fine guidewire for preliminary positioning + Ø1.6mm thick guidewire for enhanced stability) enables accurate initial bone fragment penetration. Combined with the dual-channel drill sleeve's nested structure that locks the guidewire position during reaming, and real-time depth monitoring via the depth gauge, this system minimizes screw path planning errors and significantly improves reduction accuracy in intra-articular fractures.
Stepped Bone Channel Preparation Technology
Implements a graded reaming process: initial channel establishment with Ø2.3mm cannulated drill, followed by stepped expansion with Ø2.9mm drill, and final bone thread formation using an optimized pitch cannulated tap. The drill stopper and stopper wrench precisely control drilling depth, while Ø5.0/Ø7.0 countersinks pre-create screw head seating space, effectively minimizing bone loss.
Anti-Stripping Screw Implantation Mechanism
The innovative anti-stripping screw holder features a mechanical self-locking mechanism that securely engages screw heads, maintained by the dual-hole guide for angular stability. The two-stage locking process—pre-tightening with T15/T20 hex drivers followed by final tightening with cannulated drivers—completely eliminates screw stripping risks. The screw holding forceps provides stable grip during initial implantation, preventing screw deviation within the bone channel.
Comprehensive Safety Assurance Design
The pressure sleeve system isolates soft tissues throughout drilling, preventing entanglement injuries. Dedicated guidewire cleaners immediately remove bone debris, avoiding accumulation that could affect screw placement. Quick-connect handles enable single-handed instrument switching, reducing procedure time and intraoperative contamination risks.
Millimeter-Level Precision Positioning for Improved Reduction Success
The dual-stage guidewire system (Ø1.2mm fine wire for preliminary penetration + Ø1.6mm thick wire for reinforced support) combined with dual-channel drill sleeve anti-deviation technology ensures precise bone channel trajectory control. Real-time depth feedback from the depth gauge and angular stability from the dual-hole guide significantly enhance reduction accuracy in intra-articular fractures and small bones like the scaphoid, effectively reducing malreduction rates compared to traditional freehand techniques.
Minimally Invasive Bone Channel Preparation Maximizes Bone Preservation
The stepped reaming process combined with nano-coated cutting edges enables low-torque, high-efficiency bone removal with minimal bone loss. Drill stoppers and stopper wrenches precisely control drilling depth to prevent over-penetration. Dedicated guidewire cleaners immediately clear bone debris, maintaining channel patency and providing safer fixation foundation for osteoporotic patients.
Zero-Stripping Screw Locking Ensures Long-Term Fixation Stability
The anti-stripping screw holder mechanically locks screw heads; two-stage locking (T15/T20 hex driver pre-tightening + cannulated driver final tightening) distributes torque load; screw holding forceps provide axial stability during initial implantation. This solves screw stripping challenges in high-density bone areas, effectively reducing 6-month postoperative screw loosening rates.
Comprehensive Safety Assurance Reduces Intraoperative Complications
The pressure sleeve system protects neurovascular structures and soft tissues throughout drilling, minimizing entanglement risks. Countersinks (Ø5.0/Ø7.0mm) pre-create screw head recesses to avoid prominent hardware irritation. Quick-connect handles enable single-handed instrument changes, reducing open procedure time and effectively lowering infection probabilities.
