Dynatek dalta | PVAD Medical Device Testing

PVAD

Pulsatile Ventricular Assist Device

The PVAD, a pulsatile ventricular assist device is a real time tester that closely simulates all the physical conditions necessary to fully test artificial hearts and assist devices.

Overview

With the use of compliant aortic sections, the fluid dynamics of this tester can emulate in vivo conditions for flow rates and pressures. The test fixture provides mechanical equivalents for the left ventricle, aortic valve, compliant aorta, atrium, and mitral valve, completing a closed cardiovascular loop. A piston attached to a linear actuator with a servomotor provides the pumping function. This tester can be adjusted to test ventricular assist devices or total artificial hearts by adjusting the volume per pulse and overall pressures and flows of the system. The sample chamber is temperature-controlled and allows the devices to be exposed to saline at body temperature for the duration of the test. The PVAD controlling software is written in the graphical language LabVIEW® which allows for simultaneously monitoring several conditions, managing operating parameters at programmable intervals, and collecting data from the instrumentation. Multiple testers can be linked together and operated from a central source.

PVAD Pulsatile Ventricular Assist Device

Advantages of this Tester

Programmable for several different physiological states.
Temperature controlled saline bath for samples.
Can test up to three samples.
Safety switches for temperature and pressure.
Compliant aorta to allow for setting physiological flows.

Warranty

Limited one year on tester and controller equipment.
Extended warranties available upon request.

PVAD Specifications

Overall Dimensions: 18"L x 18"W x 71"H (minus control system)
Power Requirements: 115V AC
Maximum Fluid Displacement: 300ml.
Number of Samples: up to 3
Volume Capacity: 28.4 liters
Temperature Range : ambient to 40°C
Temperature Accuracy: -1°C +0.3°C
Speed: Computer controlled stroke from 1 to 120 beats per min.
Dry Weight: 203lbs