This comprehensive instrument system is specifically designed for minimally invasive internal fixation of small bone fragments (such as those in the wrist, ankle, pelvis, and humeral head), compatible with 2.5mm diameter headless cannulated screws.
The set includes 9 core tools that address the technical challenges of small-incision or percutaneous techniques—including precise guidewire positioning, efficient micro-channel preparation, and secure screw implantation—covering the critical operational chain from guidewire positioning, accurate drilling, and depth measurement to safe screw implantation and locking.
Manufactured from high-strength stainless steel, key cutting components (e.g., Ø1.8/Ø2.0 cannulated drills) undergo specialized surface hardening treatments to ensure efficient bone penetration, long-term durability, and clear intraoperative imaging visibility.
With a core design philosophy of "Precise Guidance + Efficient Channel Preparation + Secure Implantation," the system utilizes a dual-hole drill sleeve stabilization system, stepped reaming drills, and quick-connect drive mechanisms to achieve minimally invasive, precise, and stable fixation of small fragment fractures.
This significantly reduces soft tissue dissection and surgical trauma, meeting the demands of minimally invasive internal fixation procedures for scaphoid fractures, humeral head fractures, pelvic fixation, and periarticular avulsion fractures.
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 Guidance System
The Ø1.0mm guidewire enables initial precise positioning and transfixation of fracture fragments, establishing a benchmark for subsequent procedures. The dual-hole drill sleeve provides a rigid, stable working channel and precise drilling guidance, ensuring accurate drill bit and screw implantation paths under minimally invasive or percutaneous conditions, effectively preventing operational deviation.
Efficient Stepped Bone Channel Preparation
An optimized stepped reaming protocol ensures precise and efficient screw implantation channel preparation. The Ø1.8mm cannulated drill efficiently penetrates the cortical bone layer to establish the initial channel, followed by the Ø2.0mm tapered cannulated drill that precisely expands the channel and creates a smooth transition, perfectly matching the implantation requirements of 2.5mm headless cannulated screws while reducing bone thermal injury risks and optimizing screw holding strength.
Precise Measurement and Secure Implantation Assurance
The depth gauge accurately measures guidewire channel depth, providing reliable data for selecting appropriately sized screws—a critical step ensuring fixation effectiveness. Screw holding forceps assist surgeons in precisely grasping and initially positioning small screws. The combination of cannulated hex drivers and quick-connect handles enables rapid screw connection, stable transmission, and efficient final locking torque, ensuring secure and reliable screw implantation.
Intraoperative Fluidity and Support Assurance
The Ø0.9mm guidewire cleaner effectively addresses intraoperative bone debris clogging the guidewire channel, quickly clearing the passage to ensure smooth procedural flow and avoiding operational interruptions or positioning loss due to channel blockage. The quick-connect handle design significantly enhances tool switching and screw driving efficiency. The dedicated instrument case provides organized, secure storage for all core tools, facilitating preoperative inventory and intraoperative rapid access while ensuring aseptic transfer during procedures, thereby improving surgical efficiency and safety.
Exceptional Minimally Invasive Properties and Tissue Protection
The instruments' refined design (e.g., Ø1.0mm guidewires, dual-hole drill sleeves) and operational workflow (precise positioning, stepped reaming) minimize dissection, retraction, and damage to surrounding muscles, ligaments, and soft tissues—particularly crucial in areas with vulnerable blood supply (e.g., scaphoid)—accelerating postoperative recovery.
Superior Implantation Precision
The core Ø1.0mm guidewire enables initial precise positioning of fracture fragments, while the rigid dual-hole drill sleeve provides a stable, reliable drilling guidance channel. This precision guidance system ensures highly controllable drilling paths and screw implantation directions in confined spaces or under percutaneous conditions, effectively preventing operational deviation—key to achieving satisfactory reduction and fixation outcomes.
Efficient and Optimized Bone Channel Preparation
The unique stepped reaming design significantly enhances efficiency. A smaller diameter drill first efficiently penetrates cortex to establish a foundational channel, followed by a tapered drill that precisely expands to the target diameter while creating a smooth transition. This not only reduces bone thermal injury risks but also optimizes channel morphology, providing an ideal bone holding foundation for subsequent 2.5mm headless cannulated screws while improving procedural fluidity.
Inherent Advantages of Headless Screw Design
Compatibility with 2.5mm headless cannulated screws represents a core advantage of this set. The headless design effectively eliminates prominent screw head irritation and friction risks to surrounding soft tissues, significantly reducing postoperative pain, tendinitis, or joint mobility limitation complications—particularly valuable for fixation in areas with thin subcutaneous tissue or near joints (e.g., wrist, ankle).
High Intraoperative Reliability and Process Assurance
The specifically included Ø0.9mm guidewire cleaner quickly and effectively clears guidewire channels clogged by bone debris accumulation, addressing a common intraoperative challenge while preventing positioning loss and procedural interruptions to ensure smooth, reliable surgical workflow. The quick-connect handle design greatly simplifies tool connection steps, enhancing operational efficiency.
