The EndoLab
Knee Simulator
The first EndoLab knee simulator was developed in 1999 based on ISO 14243-1. Initially, improvements focused on mechanical optimization, while in the early 2010s, advancements in digital electronics and control loop optimization became a priority. Today, the machine incorporates state-of-the-art technology and already meets upcoming requirements of the test standard, ensuring precise and reliable knee implant testing.
Other implants, such as ankle joints (ISO 22622), patella replacements (ISO 14243-5), and anatomic shoulder replacements, can also be tested on this frame.
The AT2R-24 knee simulator features a revamped software architecture with optimized digital real-time controllers that enable self-learning control loops for unparalleled precision. Its user interface offers detailed insights into simulator axes and implant responses, while additional output data ensures compliance with evolving test standards.
The simulation includes four test stations. One of the test stations can be optionally used as a reference station. The test chambers are individually sealed and can be removed from the simulator without opening. Temperature of the test fluid is individually controlled to achieve the tolerances given by ISO 14243-1.
All test stations are equipped with sensors to ensure that the correct temperature and fluid level is maintained. Machine shutdown is automatically performed at user defined limit levels.
Besides the force and flexion functions given by ISO 14243-1, the ap-translation as well as the rotation of the components can be visualized in real time. All test data is stored to hard disc at user defined intervals. The data can be imported using spread sheet calculation programs (Excel®).
Besides routine tests according to ISO 14243-1, AT2R-24 enables the definition of free implant loading curves. Up to 16 independent blocks can be user defined and stored to the controller using the EndoLab® software. The sequence as well as the duration of the blocks can be defined by the user to enable complex loading of the components.
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