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

Hexapod Motion Control: 6-DOF kinematic simulation replicates natural knee motion (flexion/extension ±120°, AP displacement ±15 mm, tibial rotation ±20°).

Dynamic Load Management: Dual-axis load control (axial 0–3.000 N, shear 0–500 N) with 0.1% force accuracy.

Biorelevant Environment: Temperature-controlled (37±1°C) lubrication bath with 20±2 g/L protein concentration.

Extended Durability: Capable of 10+ million cycle testing with <0.3% drift in calibration.

Automated Compliance: Pre-programmed ISO/ASTM test protocols with real-time data validation.

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

Parameter	Specification
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

Knee Simulator Fixture Kit:

Self-centering femoral/tibial component adapters (28–40 mm)

Patella-femoral contact jigs (30°–60° Q-angle adjustability)

Biorelevant Bath System:

10L capacity with recirculation pump and protein skimmer

316L stainless steel construction with HEPA filtration

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

Operator Kit:

Calibrated torque wrench set (1–50 Nm)

Specimen alignment gauges (ISO 14243-1 compliant)

Calibration Bundle:

NIST-traceable force calibration weights

Angular encoder verification tool

Safety Kit:

Laser safety curtains

Acoustic enclosure with 30 dB noise reduction

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