Product Overview
The Hexapod External Fixator System is an advanced multi-axial circular fixation solution engineered for complex orthopedic applications, including acute fracture stabilization, progressive limb deformity correction, bone transport, and comprehensive limb reconstruction procedures.
Utilizing the mechanical principles of the Stewart platform, the system pairs multi-planar aluminum or titanium alloy rings with six independent, adjustable telescopic struts. This architecture grants orthopedic surgeons six degrees of freedom to perform precise, three-dimensional corrections (translation, rotation, angulation, and lengthening) through controlled, incremental software-assisted or manual adjustments.
Technical Specifications & Ordering Information
|
Ring Type |
Material Options |
Diameter Options (mm) |
Thickness (mm) |
Feature |
|
Full Ring (360°) |
Medical-Grade Aluminum / Titanium |
120, 140, 160, 180, 200, 220, 240 |
6.0 / 8.0 |
High mechanical rigidity for definitive loading |
|
Two-Thirds Ring (240°) |
Medical-Grade Aluminum / Titanium |
140, 160, 180, 200, 220 |
6.0 / 8.0 |
Optimized for proximal femur or shoulder clearance |
|
5/8 Ring / Arch |
High-Strength Titanium Alloy |
120, 140, 160, 180, 200 |
8.0 |
Ideal for periarticular applications and joint proximity |
Primary Clinical Indications
Complex Fracture Management: High-energy open fractures, severely comminuted intra-articular fractures, and cases with significant soft-tissue compromise.
Deformity Correction: Post-traumatic malunions, nonunions, congenital limb deformities, and multi-planar angular or rotational deviations.
Limb Lengthening & Reconstruction: Treatment of limb length discrepancies (LLD) and extensive segmental bone defects via distraction osteogenesis.
Specialized Salvage Procedures: Infected nonunions, Charcot arthropathy, and joint arthrodesis.
Product Features & Engineering Excellence
Six-Degree-of-Freedom Precision Correction: The spatial hexapod configuration allows simultaneous correction of translation, angulation, rotation, and lengthening without the need to surgically disassemble or reconstruct the frame. Incremental adjustments are executed directly on the six numbered struts, reducing secondary surgical trauma and adjustment time.
Ultra-Stable Biomechanical Load Distribution: Engineered from high-tensile medical-grade alloys, the circular rings distribute axial loads evenly across the bone-hardware interface. This structural rigidity promotes early weight-bearing, which accelerates callus formation and shortens overall consolidation periods.
Quick-Adjust Telescopic Strut Design: Each strut features a clear laser-etched metric scale for error-free daily adjustments by the patient or clinician. Fast-locking mechanisms prevent accidental scale shifts, ensuring strict adherence to the prescribed correction protocol.
High Compatibility and Modular Interfacing: The universal hole patterning on the circular rings allows seamless integration with standard Ilizarov components, hybrid unilateral bars, pin clamps, and wire fixation bolts, giving surgeons complete freedom in complex frame construction.
Main Components & Instruments
The complete system is delivered as a comprehensive kit comprising structural hardware, transfixion elements, and specialized surgical instrumentation.
Structural Frames
Anodized Aluminum Rings: Color-coded for rapid identification, combining lightweight patient comfort with high radiolucency.
Titanium Rings: Maximum strength-to-weight ratio, optimized for long-term correction cycles and MRI compatibility.
Transfixion Elements
Schanz Screws: Tapered thread designs available in self-drilling and self-tapping variations to ensure secure monocortical or bicortical anchorage.
Kirschner Wires (Bayonet & Smooth): High-elasticity wires designed to maintain tension under physiological stress.
Connection & Fixation Hardware
Wire Fixation Bolts & Clamps: Slotted and holed bolts that lock wires securely to the ring body under high torque.
Post Connectors & Hinges: Allow for custom multi-level extensions and multi-planar framing variations.
Surgical Instrument Set
Wire Tensioners: Calibrated mechanical tensioning devices ensuring precise wire loading up to 130 kg.
Universal Wrenches & Sockets: Ergonomic instrumentation for intraoperative frame assembly and tight mechanical locking.
Deformity Correction Software Compatibility
The hardware architecture of this hexapod system is optimized to sync seamlessly with international deformity correction software algorithms.
Coordinate Inputs: The precise axial measurements, ring diameters, and structural baseline parameters match standard deformity planning software.
Predictable Trajectories: The 1.0 mm precise thread pitch ensures that software-generated daily prescription schedules translate directly into accurate mechanical adjustments at the patient level.
Material Science & Manufacturing Quality Control
Material Integrity
- Titanium Alloy: Grade 5 Titanium (Ti-6Al-4V ELI) according to ASTM F136 standards for superior biocompatibility and fatigue life.
- Aluminum Alloy: Aircraft-grade high-strength aluminum with Type II hard-anodized surface treatment to minimize glare and enhance corrosion resistance.
- Stainless Steel: 316LVM medical-grade stainless steel (ASTM F138) for heavy-duty load-bearing clamps and fasteners.
Quality Assurance Framework
- Incoming Material Verification: Every batch of raw metal undergoes ultrasonic testing and chemical composition analysis before entering production lines.
- Precision CNC Machining: Multi-axis CNC milling machines maintain tolerances within tight micrometric thresholds to eliminate mechanical backlash in thread engagement.
- Metrology & Assembly Validation: Critical components are subjected to Coordinate Measuring Machine (CMM) testing to confirm mechanical tolerances and interlocking security.
Regulatory Compliance & Global Certifications
Manufacturing processes are audited and governed by strict international healthcare benchmarks to ensure absolute safety and traceability for hospital tendering and distribution channels.
ISO 13485 Certification: The entire facility operates under a certified Medical Devices Quality Management System.
Comprehensive Documentation: Full technical documentation, material mill certificates, biocompatibility test reports (ISO 10993), and sterilization validation studies are provided to support local import and product registration requirements.
FAQ
Q: What clinical benefits does a hexapod system offer compared to traditional unilateral or standard Ilizarov fixators?
A: The hexapod system utilizes computer-assisted spatial kinematics via six adjustable struts, allowing simultaneous multi-planar correction of complex multi-axial deformities. Unlike traditional systems that require manual disassembly and reconstruction of the frame to adjust for angular or translational errors, the hexapod system achieves accurate multi-dimensional correction purely by adjusting the lengths of the six struts, minimizing patient discomfort and secondary surgical intervention.
Q: What materials are utilized in your rings and struts, and how do they impact imaging?
A: The systems are primarily manufactured from high-strength medical-grade aluminum alloy and titanium alloy. The aluminum elements provide excellent radiolucency, allowing clear intraoperative and postoperative radiographic visualization of bone healing and callus formation. The titanium components offer outstanding biocompatibility and high fatigue resistance, and they are safe for use in magnetic resonance imaging environments under specified clinical guidelines.
Q: What configuration support is provided for international distributors seeking proprietary product modifications?
A: Extensive manufacturing customization services are provided, including customized dimensional sizing, modified hole configurations, distinct surface anodization colors, and custom instrumentation configurations. The production facility works closely with distribution partners to adapt the system specifications to match specific regional clinical preferences or to fit within proprietary hospital kits.
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