Spinal Pedicle Screw-Rod System Compressive Fatigue Testing Machine

Standard 

• YY/T 0857-2011 (China): Specifies compression fatigue testing protocols for spinal pedicle screw-rod systems, including load ratios, frequency, and failure criteria.
• YY/T 1560-2017 (China): Defines methodologies for evaluating the fatigue strength of spinal implant assemblies under complex loading.
• ASTM F1717-18 (International): Standard test methods for spinal implant constructs in vertebrectomy models.
• ASTM F2706-19: Specifies static and fatigue testing requirements for occipito-cervical and occipito-cervico-thoracic spinal implants.

Product Advantages

1. High-Frequency Stability: Advanced electromagnetic actuator maintains 0.1–15 Hz frequency range with ±0.05% force accuracy.
2. Ultra-Precision Loading: 50 kN axial force capacity with 1 N resolution for submicron displacement control.
3. Dynamic Load Control: Programmable R=0.1–10 load ratios with real-time stiffness compensation.
4. Biorelevant Environment: Temperature-controlled (37±1°C) lubrication bath with 20±2 g/L protein concentration.
5. Extended Durability: Capable of 10+ million cycle testing with <0.2% drift in calibration.
6. Modular Design: Six-station configuration allows parallel testing of multiple specimens.

Product Features

• Electromagnetic Servo Motor: 50 kN axial force capacity with programmable load ratios (R=0.1–10).
• Triaxial Strain Gauge: Measures axial/radial strains simultaneously (0.1 με resolution).
• Dynamic Load Control: 0.1–15 Hz frequency range with programmable waveforms (sine, square, random, custom).
• Thermal-Mechanical Chamber: ±0.3°C temperature stability with integrated humidity control (10–95% RH).
• High-Resolution Imaging: Optional integration with micro-CT systems for in-situ crack analysis.
• Safety System: Emergency stop, overload clutches, and laser-based specimen breakage detection.

Technical Parameters

Accessories

1. Spinal Implant Fixture Kit:
   • Self-centering pedicle screw clamps (4.5–7.5 mm diameter compatibility)
   • Rod-bending jigs with laser-aligned loading anvils
2. Thermal-Mechanical Chamber:
   • 25L capacity with rapid cooling/heating (15°C/min)
   • 316L stainless steel interior with HEPA filtration
3. CompressionMaster Pro Software:
   • Automated stiffness degradation tracking and fatigue limit calculation
   • 21 CFR Part 11-compliant audit trail with blockchain timestamping
   • Remote monitoring via dedicated iOS/Android app
4. Operator Kit:
   • Calibrated torque wrench set (0.5–50 Nm)
   • Specimen alignment gauges (ASTM F1717 compliant)
5. Calibration Bundle:
   • NIST-traceable force calibration weights
   • Strain gauge verification tool
6. Safety Kit:
   • Laser safety curtains
   • Acoustic enclosure with 30 dB noise reduction