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 44 core tools that address the key technical aspects of proximal femur intramedullary nailing—precise medullary cavity opening, safe guidewire implantation, stable main nail placement, reliable multi-directional locking screw fixation, and efficient lag screw insertion.
It covers the complete closed-loop workflow from preoperative template planning, minimally invasive opening, medullary cavity preparation, main nail implantation, distal/proximal locking screw fixation to lag screw placement and compression. Manufactured from high-strength stainless steel and specialty alloys, critical components (e.g., guidewires, drill bits, reamers) undergo reinforcement treatments to ensure operational strength and radiographic visibility in the complex anatomical region of the proximal femur.
With a core design philosophy of "Precise Opening + Safe Guidance + Dynamic Targeting + Efficient Locking," the system utilizes radiographic templates for pre-planning, metal smooth guidewires for guidance, proximal/distal dual dynamic targeting arm systems, quick-connect handles, and modular locking components to achieve minimally invasive, stable, and efficient fixation of femoral trochanteric fractures, significantly reducing surgical trauma and fluoroscopy time.
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 Opening
Radiographic 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 metal smooth guidewires to establish stable channels. Proximal opening reamers efficiently prepare main nail entry points, ensuring precise controllable surgical starting points.
Dynamic Three-Dimensional Targeting System
Proximal targeting arms and distal dynamic targeting arms are rigidly connected via linking screws, constructing a three-dimensional dynamic targeting framework that synchronously covers proximal lag screw and distal locking screw channels. Combined with locking screw protection sleeves, locking screw drill sleeves, and lag screw type I guidewire sleeves, this achieves precise positioning of multi-angle locking screws, significantly reducing intraoperative fluoroscopy requirements.
Modular Efficient Operation System
Insertion handles connect to main nails, impact rods combined with sliding impact hammers achieve gentle implantation, and slide hammer guides assist depth control. Distal locking screws utilize locking screw drill bits for drilling, locking screw depth gauges for measurement, and cannulated locking screw drivers with T-type quick-connect handles for rapid locking. Proximal lag screws are prepared by lag screw type I reamers and stepped drills for bone channel preparation, screw inserters place screws, and compressors achieve dynamic compression at fracture ends. Universal end cap drivers conveniently lock end caps. Threaded guidewires enhance bone channel holding power. Tissue protection plates provide continuous soft tissue protection.
Safety Protection and Operational Assurance
Protection sleeves isolate soft tissue injury risks. Locking screw sleeve needles and lag screw sleeve needles prevent drilling deviation. Limiters precisely control drilling depth. Guidewire cleaners maintain channel patency, ensuring smooth and safe operation.
Integrated Storage and Quality Control
The instrument case enables classified integrated management of 44 tools. All instruments are manufactured from medical high-strength stainless steel, with consumables like guidewires and drill bits undergoing specialized hardening and radiographic treatments to ensure intraoperative visibility and operational durability.
Dynamic Targeting System Significantly Enhances Surgical Precision
The rigid connection of proximal and distal dynamic targeting arms constructs a three-dimensional positioning framework, achieving synchronous precise positioning of lag screw and locking screw channels with high single-attempt success rates for distal locking screw placement. Combined with radiographic template pre-planning and metal smooth guidewire guidance, main nail entry point errors are controlled within ±1mm, substantially reducing intraoperative fluoroscopy frequency (3-5 fewer exposures compared to traditional techniques).
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. Lag screw type I dedicated tool chains achieve integrated operations of fracture reduction, screw implantation, and dynamic compression, avoiding procedural interruptions from instrument mixing. Emergency components including lag screw extractors and end cap removal sleeves address intraoperative complexities without requiring additional inventory.
Active Compression Mechanism Enhances Fixation Stability
Lag screw type I compressors provide controlled mechanical compression, achieving tight fracture end coaptation. Combined with gradient bone channels prepared by stepped drills, this prevents bone cutting during compression, reduces postoperative collapse risks, and provides mechanical assurance for early weight-bearing.
Complete Process Protection Reduces Complication Risks
Multi-level isolation designs including tissue protection plates and locking screw protection sleeves effectively reduce neurovascular injury risks during drilling and screw placement. 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.
