Dynatek Labs SVP-24 - Manual (Page 3)

Accelerate your stent and graft fatigue testing with exceptional cost savings!
Innovative technology
delivers superior testing results
Dynatek’s SVP and UST feature a single motor that drives fluid
with a pulsatile motion into the whole sample. This ensures that
the entire sample is undergoing the same test condition and the
pressurization is most like how the heart pressurizes the vasculature.
Since pulsatile conditions are uniform across the entire length of
the mock vessel that contains the sample, the SVP-24 and UST,
unlike dual-headed units, can test up to five stent samples in a mock
vessel, (depending on the length of the stent) offering significantly
increased capacity. With the SVP-24 and UST, cutting edge science
delivers uniform test conditions and exceptional performance.
The vertical configuration of the SVP-24 and UST permits
bidirectional rotation of the manifold, allowing the included laser
micrometer to take deflection readings of samples conveniently.
The Flow-Through Adapter allows test fluid to be pumped through
all samples in a closed loop, ensuring an even temperature
distribution within all mock vessels and also ensuring the removal
of shed particles, which is of particular importance during the
testing of bioabsorbable stents.
Designed for reliability and long life
With only one powerful, long-life Hyper Drive linear actuator, the
SVP and UST feature a minimal number of moving parts, about half
the number of moving parts in competitive testers featuring two
motors. Proprietary alloy bellows are designed to run for over a
billion cycles and the rugged manifold is fabricated from durable
Delrin.
Frelon Gold™-coated linear bearings on the linear actuator are
designed to absorb enormous loads, provide smooth motion and
reduce stress on the motor, and the custom motor shaft features a
Diamond-Like Coating (DLC) making it extremely hard and wear-
resistant. Result? The SVP-24 and UST will provide years of virtually
maintenance-free performance.
Boost productivity with optional
accessories
A wide range of optional add-ons have been tailor-made to meet
the needs of stent and graft testing protocols:
• Various diameters of graft tube adapters and quick
disconnects
• Sample isolation valve to allow removal or replacement
of individual samples without test interruption
• Adapters for catheter deployment of stents on the
tester
• Adapters for UST-XL to allow two samples with small
IDs to be tested in each sample position
“…the UST lets me choose sample flexibility
or high throughput when I need it.”
One motor or two?
In competitive units featuring two motors, two wave fronts
rush inwards towards the middle of the sample where they
collide. The required test condition is only created in a
narrow center region, resulting in only the center of the
sample being adequately tested. This situation is wors-
ened in longer samples, where the two extremities of the
sample are further away from the central ‘test region’ on
the sample.
Furthermore, dual-motor units can only test one stent per
mock vessel, since test conditions are obtained only in the
center of each mock vessel.