I. Core Components and Functions
The instrument kit is designed for anterior cervical spine fixation surgery. Based on search results, its typical configuration includes :
- Exposure and Retraction Tools
- Cervical Retractors/Distractors: Retract soft tissues to expose the surgical field (e.g., vertebral body distractors, distraction pins) ;
- Distraction Pin Driver: Secures distraction pins and adjusts intervertebral height .
- Bone Processing Tools
- Bone Drills/Drill Bits: Create pilot holes in vertebral bodies (diameter typically 2.0-4.0mm) ;
- Bone Taps: Prepare screw threads for plate fixation .
- Plate Handling Instruments
- Plate Holders/Benders: Grasp and contour titanium plates to match cervical lordosis ;
- Temporary Fixation Pins: Stabilize plates during screw placement .
- Screw Implantation System
- Screw Drivers: Insert locking/non-locking screws (compatible with quick-release handles) ;
- Depth-Limited Drills: Control screw trajectory depth .
Note: High-end kits may include calipers for screw length measurement and debris removers to clear bone fragments .
II. Material and Performance Specifications
- Material Standards
- Medical-grade stainless steel (ISO 5832-1), surface passivated or coated (Ni ≥7μm, Cr ≥0.5μm) ;
- Corrosion resistance meets YY/T0149 Grade B (boiling water test) .
- Mechanical Properties
- Cutting-edge hardness: ≥40 HRC; Non-cutting parts: ≥32 HRC ;
- Surface roughness: Ra ≤1.6μm (external), ≤6.3μm (holes/grooves) .
- Safety Features
- Smooth edges on neural retractors to prevent nerve injury ;
- Ergonomic handles with anti-slip silicone grips .
III. Clinical Applications
- Primary Use: Anterior cervical discectomy/fusion (ACDF) for degenerative disc disease, fractures (C2-T1), spondylolisthesis ;
- Contraindications: Severe osteoporosis, active spinal infection .
IV. Operational Workflow
- Preoperative
- Non-sterile kit requires autoclaving ;
- Verify plate/screw compatibility with patient anatomy .
- Intraoperative Key Steps
- Use distractors to restore disc height before plating ;
- Avoid over-tightening screws to prevent plate deformation .
- Post-Procedure
- Clean instruments with enzymatic solutions to prevent biofilm formation .
