The mobility of the knee joint presents significant problems for effective and rigorous in-vivo testing. Working together with Biomet, the Prosim Knee Wear Simulator (Independent Stations) was designed and developed to give full force and displacement control for individual stations, to enable each one to run autonomously.
Knee Wear Simulator
The key objectives when developing the simulator can be summarised as follows:
- Design and build a simulator that fully meets the requirements of both ISO 14243-1 (2009) and ISO 14243-3 (2004)
- Capable of going well beyond existing ISO requirements for adverse wear testing
- Each station is fully independent and capable of running its own demand waveforms
- Capable of replicating deep knee bending
- Incorporating soft tissue virtual springs
We have recently introduced the Peltier Heater/Cooler system (section 2.8) which automatically maintains the test fluid media (serum) temperature at 37°C ±2°C, replacing the old heater and pump system circulating the test fluid media externally. As a result, we help the customer to achieve a huge saving on the cost of serum, as only 1/3 of the serum volume is required on a self-contained Peltier heater unit in contrast to the pump + heater system.
The Prosim Knee Wear Simulator (Independent Stations) is a multi-station machine designed for the reliable and repeatable testing of knee implants, providing designers and developers of replacement knee joints with cost-effective and accurate means of generating wear and friction data under realistic in-vivo simulated conditions.
All axes of the Prosim Knee Wear Simulator (Independent Stations) are electromechanically driven, using a combination of motors, drives and gearboxes. This enables the simulator very closely follow any demand waveform however demanding it may be.
Empirical data generated by our simulators over the last ten years supports the assertion that the patterns of wear of knee implants tested in Prosim Knee Wear Simulators accurately mirror that of the wear of implants extracted from humans after years of use.
The mobility of the knee joint presents significant problems for effective and rigorous in-vivo testing. Prosim Knee Wear Simulator offers full force and displacement control on individual stations featuring:
- Fully meets the requirements of both ISO 14243-1 (2009) and ISO 14243-3 (2004)
- Each station is fully independent and capable of running its own demand waveforms
- Capable of replicating deep knee bending
- Incorporating soft tissue virtual springs and auto-adapting force control to meet the ISO 14243-1 knee wear testing standards.
- Peltier temperature control system that maintains the test fluid media at the temperature of 37°C ±2°C
Custom simulators
Prosim also offers customisation of simulators to meet the client’s specific testing requirements, including additional stations and different configurations.
Hope for people with severe spine fractures
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ISO Electro-Mechanical Wear Simulators – The New Focus for Prosim
Feb 11, 2009 Following the successful introduction of the spinal implant wear simulator, their first fully electro-mechanical simulator, Prosim have now committed to a development
Prosim Appoints A Chinese Distributor
Feb 11, 2009 In order to capitalise on the potential of the Chinese orthopaedic market and its growing requirement for testing equipment to ensure that
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If you have any specific requirements not fully addressed by the above range of mechanical wear testing simulators, please do not hesitate to contact us.
We are always happy to look at the customisation of existing equipment or design and build projects to a customer’s specifications.