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Total Knee Joint Prostheses Wear Tester

Standard

  • ISO 14243-1:2014: Specifies wear testing parameters for total knee prostheses, including axial loading, flexion/extension kinematics, and environmental conditions.
  • ISO 14243-3:2014: Defines protocols for simulating physiological loading, displacement, and rotation during knee joint wear testing.
  • ASTM F3297-18: Additional compliance for advanced testing scenarios including high-flexion and pivot-shift motions.

Product Advantages

  1. Hexapod Motion Control: 6-DOF kinematic simulation replicates natural knee motion (flexion/extension ±120°, AP displacement ±15 mm, tibial rotation ±20°).
  2. Dynamic Load Management: Dual-axis load control (axial 0–3,000 N, shear 0–500 N) with 0.1% force accuracy.
  3. Biorelevant Environment: Temperature-controlled (37±1°C) lubrication bath with 20±2 g/L protein concentration.
  4. Extended Durability: Capable of 10+ million cycle testing with <0.3% drift in calibration.
  5. Automated Compliance: Pre-programmed ISO/ASTM test protocols with real-time data validation.
  6. Modular Design: Four-station configuration allows parallel testing of multiple specimens.

Product Features

  • Electrohydraulic Actuation: Six independent servo-hydraulic actuators for precise motion control.
  • 6-Axis Force/Torque Sensors: Measure axial forces, shear forces, and torsional moments simultaneously.
  • Temperature-Controlled Bath: Recirculating lubrication system with protein skimmer and pH monitoring.
  • High-Resolution Imaging: Optional integration with micro-CT systems for in-situ wear analysis.
  • AI-Powered Analytics: Machine learning algorithms predict wear rates from initial test cycles.
  • Safety System: Emergency stop, over-pressure relief, and laser-based specimen breakage detection.

Technical Parameters

ParameterSpecification
Flexion/Extension Range ±120° (0.01° resolution)
AP Displacement ±15 mm (1 μm resolution)
Tibial Rotation ±20° (0.01° resolution)
Max. Axial Force ±3,000 N (500 N resolution)
Max. Shear Force ±500 N (100 N resolution)
Load Control Accuracy ±0.5% of reading (0–3,000 N)
Frequency Range 0.1–5 Hz (programmable waveforms)
Temperature Control 37±1°C (PT1000 sensors)
Lubrication System 10L capacity with protein skimmer and bubble trap
Data Acquisition 100 kHz sampling rate (16-bit resolution)
Power Requirements 220V/110V ±10%, 50/60Hz, 2,500W
Dimensions (W×D×H) 1,800 × 1,200 × 2,000 mm
Weight 950 kg (including bath and control cabinet)
Noise Level <65 dB (A-weighted)

Accessories

  1. Knee Simulator Fixture Kit:
    • Self-centering femoral/tibial component adapters (28–40 mm)
    • Patella-femoral contact jigs (30°–60° Q-angle adjustability)
  2. Biorelevant Bath System:
    • 10L capacity with recirculation pump and protein skimmer
    • 316L stainless steel construction with HEPA filtration
  3. WearMaster Pro Software:
    • Automated wear rate calculation (mass loss/volume displacement)
    • 21 CFR Part 11-compliant audit trail with blockchain timestamping
    • Remote monitoring via iOS/Android app
  4. Operator Kit:
    • Calibrated torque wrench set (1–50 Nm)
    • Specimen alignment gauges (ISO 14243-1 compliant)
  5. Calibration Bundle:
    • NIST-traceable force calibration weights
    • Angular encoder verification tool
  6. Safety Kit:
    • Laser safety curtains
    • Acoustic enclosure with 30 dB noise reduction


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