VIVO™

AMTI’s VIVO™ brings new life to joint motion simulation, dramatically increasing the kinetic and kinematic realism of simulation to provide the closest possible approach to in-vivo conditions. VIVO™ provides the world’s first full-speed, full-load six degree of freedom environment in which to test joint prostheses as well as biological joint specimens. 

VIVO™’s performance highlights include:

• Six degrees of freedom – all joint motions can be controlled and measured
• Each axis may operate in force or position control – including zero-force control to simulate an unconstrained axis
• Convenient user programming of force and motion profiles
• AMTI’s exclusive multi-fiber ligament model – captures 6-DOF soft tissue inter-axis coupling
• Traditional heuristic soft tissue model also supported
• Grood and Suntay coordinate system – kinematics are described using joint-referenced virtualized axes
• User-defined coordinates – change coordinate system origin and orientation to accommodate test specimens as mounted
• Iterative learning control – advanced feed-forward control system provides stability and rapid convergence to command during cyclic testing
• Temperature-controlled serum circulation and containment system
• One to three independently programmable test stations in a single frame – reduces capital acquisition cost, floor space requirement and power connections
• Optional VivoSim visualization software – provides an accurately scaled real-time display of the Vivo machine, the component under test, and the multi-fiber ligament model