This specialized instrument set is designed for minimally invasive internal fixation of proximal femur fractures (particularly intertrochanteric and subtrochanteric fractures), compatible with short intramedullary nail systems.
The set includes 42 core tools that cover the complete workflow from main nail insertion, dual lag screw precision placement, distal locking screw fixation, to end cap installation.
With a core design philosophy of "Anatomical Adaptation + Rotational Stability + Minimally Invasive Technique," the system utilizes dual lag screw locking and short nail design to significantly reduce medullary cavity damage risk, providing a biomechanically superior fixation solution for osteoporotic fractures and elderly patients.
Instruments are manufactured from high-strength stainless steel, with critical components (e.g., reamers, taps) undergoing specialized surface hardening treatments to ensure bone channel preparation efficiency and instrument durability.
The system significantly reduces surgical trauma and effectively minimizes medullary cavity invasion compared to traditional long nails, making it suitable for minimally invasive fixation of femoral intertrochanteric fractures, high subtrochanteric fractures, and osteoporotic patients, facilitating early weight-bearing rehabilitation.
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.
Precise Preoperative Planning and Minimally Invasive Access
Radiopaque templates enable intraoperative pre-assessment of fracture reduction and implant positioning. Cannulated openers and T-type drill chucks协同 complete precise minimally invasive openings. Ball-tipped guidewires guide safe entry into the medullary cavity, combined with smooth metal guidewires to establish stable channels. Proximal opening reamers efficiently prepare main nail entry points, ensuring precise controllable surgical starting positions.
Dynamic Targeting and Precision Positioning System
Integrated dual-stage dynamic targeting arms (proximal + distal) adapt to femoral anterior bow anatomical variations. Locking screw drill sleeves and lag screw guidewire sleeves form a dual guidance mechanism, ensuring minimal parallel alignment error for dual screws.
Dual Screw Anti-Rotation Reinforcement Design
The system employs dual lag screw parallel locking technology to construct a three-dimensional mechanical stable structure, combined with anti-rotation rods for active control of femoral head rotation. This significantly enhances anti-rotation capability in osteoporotic fractures, effectively increasing torsional strength compared to single-screw systems, and reliably preventing postoperative screw backing out and cut-out risks.
Safety Protection and Operational Assurance
Protection sleeves isolate soft tissue injury risks. Locking screw sleeve pins and lag screw sleeve pins prevent drilling deviation. Depth limiters precisely control drilling depth. Guidewire cleaners maintain channel patency, ensuring smooth and safe operation.
Modular Efficient Operation Chain
Centered around a quick-connect handle system (T-type/straight) for rapid instrument switching: impact rods and sliding impact hammers achieve closed-loop main nail implantation; reamers/taps and depth gauges precisely pre-expand bone channels; cannulated locking screw drivers and universal end cap drivers perform terminal locking, completing confined space operations. The full-process nested tool design effectively reduces intraoperative instrument change frequency.
Dynamic Targeting System Significantly Enhances Surgical Precision
Proximal-distal dual-stage dynamic targeting arms real-time adapt to femoral anterior bow curvature, combined with ball-tipped guidewires and radiopaque templates to achieve entry point positioning errors ≤1mm. Dual guidance for locking screw channels (drill sleeves and guidewire sleeves) ensures minimal parallel alignment deviation for dual lag screws, reducing intraoperative fluoroscopy frequency by 50%.
Modular Design Optimizes Surgical Workflow
Quick-connect handles (T-type/straight) combined with cannulated locking screw drivers enable rapid instrument switching, effectively shortening locking screw placement time. Dedicated tool chains for lag screw types II and III achieve integrated fracture reduction and screw implantation operations, avoiding procedural interruptions from instrument mixing. Emergency components including end cap removal sleeves address intraoperative complexities without requiring additional inventory.
Significantly Enhanced Biomechanical Stability
Dual lag screw parallel locking design (screw inserters and combined sleeves) with anti-rotation rods forms triangular mechanical support, effectively increasing torsional strength and reliably resisting femoral head rotation and cutting forces. Particularly suitable for osteoporotic fractures, it reduces postoperative internal fixation failure risk to below 5%.
Complete Process Protection Reduces Complication Risks
Multi-level isolation designs including tissue protection plates and locking screw protection sleeves efficiently reduce neurovascular injury risks during drilling and screw placement. Depth limiters precisely constrain drilling depth, and guidewire cleaners maintain channel patency, avoiding thermal necrosis and guidewire fracture. Guidewires and drill bits reinforced with titanium alloy coatings effectively enhance bending resistance, ensuring operational safety in high-density femoral bone regions.
