AWT System


Heart Valve
Prosthesis
AWT System

with Dual Control Technology (DCT)™

Dual Control Technology (DCT)™ for constant leaflet closing velocities during the entire AWT cycling period

38ml/stroke – The largest stroke volume AWT system on the market, designed to meet DFM conditions with large valve prosthesis

Dual Control Technology (DCT)™ designed to optimize passing cycles while maintaining differential pressure target and improve predictability of AWT study completion

Frequency-dependent failure modes during Accelerated Wear Testing (AWT) have been reported in various versions of ISO 5840 and discussed in standardization committees for years. Real-time Wear Testing (RWT) was designed as an attempt to address the frequency-dependent failure modes during AWT as it generates unrealistically severe conditions not seen in normal physiologic conditions.

It is common knowledge that the inertial forces on heart valve prosthesis increase significantly when exposed to AWT conditions. To avoid unwanted in-vitro test artifacts resulting in premature failure of perfectly sound heart valve prosthesis designs, ViVitro’s AWT System with Dual Control Technology (DCT)™ maintains constant leaflet closing velocities across the entire AWT cycling period. With its proprietary Dual Control Technology (DCT)™, the ViVitro’s AWT System uses two separate position feedback sensors and algorithms to control piston displacement and bypass valve independently to meet differential pressure requirements while preserving initial leaflet closing velocities, and optimizing passing cycles.

  • Patent pending Dual Control Technology to maintain constant leaflet closing velocities during Accelerated Wear Testing (AWT) and Dynamic Failure Mode (DFM)
  • Largest stroke volume AWT system on the market, specifically designed to meet Dynamic Failure Mode (DFM) test conditions with large valve prosthesis
  • Maximum versatility with pre-wired controller unit and data acquisition system for easy PnP upgrade of up to 6 test modules
  • True standalone architecture with independent test modules to avoid disruptions to adjacent on-going test
  • Transparent test chambers with inflow, outflow, and lateral visibility for optimum test samples visualization during testing
  • Patent pending flow loop system to operate system under low hydrostatic pressure conditions and avoid the need for an external pressure source

Contact us to learn more about the ViVitro Accelerated Wear Tester with Dual Control Technology (DCT™) and how ViVitro Labs can help you with your cardiovascular device testing needs.


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ViVitro AWT System with DCT™
6 test modules configuration
ViVitro AWT System with Dual Control Technology (DCT)™ meets ISO 5840 Accelerated Wear Testing (AWT) and Dynamic Failure Mode (DFM) requirements for all valve types and designs including transcatheter (TAVI, TMVR, TPVR, TTVR) and surgical valve technologies; aortic, mitral, pulmonary, tricuspid and biological tissue valves; rigid metallic or polymeric and soft polymeric valve technologies and beyond. The ViVitro AWT System with DCT™ can be used to assess cardiac valve repair devices, transcatheter cardiac occluders, and many other cardiac implant devices.

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