How it Works

1. 1. LSB series load cells are threaded in-line with a linear actuator and syringe piston which measures the force the linear actuator applies to the syringe piston for test validation.
2. 2. As the linear actuator pushes down on the load cell/piston the flow of fluid pushes the TAVR valve open.
3. 3. A check valve keeps the fluid moving through the TAVR valve and a reservoir prevents the system from pushing air which would invalidate the test.
4. 4. The linear actuator then retracts, pulling the piston up, thereby forcing the TAVR closed and refilling through the now open check valve.
5. 5. This cycling allows for testing of the durability of the replacement valve in a simulated aortic environment for compliance with ISO 5840 series standards.
6. 6. The USB220 displays and logs the data to a PC via our SENSIT™ software. This data can be used to validate the accuracy and precision of the pressure generated by the syringe piston.
7. 7. The IAA series amplifier, amplifies the signal for use in DAQs that cannot accept a mV/V signal.