The instrument kit for the occipitocervicothoracic posterior screw-rod system is specifically designed for posterior spinal fixation surgery, with core advantages in precision, operational efficiency, and safety. Below is a comprehensive analysis based on technical documentation:
I. Precision Positioning & Adaptation Tools- Anatomically Guided Design
- Graduated guide & anti-rotation sleeve: Ensures controlled screw trajectory (deviation <1°), reducing pedicle breach risks.
- Pedicle probe & depth gauge: Combines preoperative imaging data for real-time bone channel depth/direction measurement, adapting to vertebral anatomical variations.
- Template rod & bending guide: Simulates spinal curvature before intraoperative rod contouring, preventing metal fatigue from repeated adjustments.
- Dynamic Adjustment Capability
- Adjustable hinge joint rod tools: Allows ±15° post-placement occipitocervical angle adjustment without disassembly.
- Polyaxial screw driver: 60° conical angulation design for complex anatomies (e.g., cervicothoracic junction).
II. Efficient Mechanical Control Tools- Force Transmission Optimization
- Rod bender & contouring rod: Low-resistance bending of TC4 titanium rods enables multi-plane shaping with minimal instrument changes.
- Compression/distraction forceps: Integrated force feedback mechanism for controlled intervertebral pressure regulation, preventing neural over-distraction.
- Rapid Connection System
- Quick-connect handle & locking plug tool: One-click locking design reduces screw-rod assembly time by 40%.
- Transverse connector driver: Simplifies cross-link installation to enhance torsional resistance.
III. Safety-Enhanced Tools- Anti-Mishandling Mechanisms
- Anti-rotation sleeve: Secures screw heads against displacement, particularly critical for osteoporotic patients.
- Frog-type reduction clamp: Safely grips lamina/articular processes for dislocation reduction, minimizing spinal cord traction risks.
- Material & Sterilization Assurance
- High-hardness stainless steel tools (30Cr13, 440B): Corrosion-resistant and durable.
- Modular tray system: Separates sharps and delicate components, compliant with autoclave sterilization (ISO13485).
Core Value Summary- Precision: Submillimeter accuracy through guided tools, lowering intraoperative complications.
- Efficiency: 30% reduced operative time via quick-connect systems.
- Safety: Nerve protection through anti-rotation designs and ISO-compliant sterilization.
Technical specifications align with NMPA approval (No. 20203130528) and ISO 5832 material standards.
