The Supera™ Stent’s unique design results in a platform with features unmatched among standard nitinol peripheral stents:
The interwoven nitinol design provides high structural integrity and kink resistance, producing the features that set the Supera™ Stent apart.
The Supera™ Stent exhibits more than 4 times the compression resistance of all other self-expanding nitinol stents.2 Benchtop testing with the 5 pounds of force results in compression of a standard laser-cut nitinol stent (below left). When the same force is applied to the Supera™ Stent, it retains its circular form (below right).
In the clinical setting, those results are illustrated by being deployed in the same patient and same vessel via the angiogram and intravacular ultrasound (IVUS) images below. In the IVUS images, note the compression of the standard nitinol stent, while the Supera™ Stent was able to retain its circular shape. Such performance is particularly important in heavily calcified lesions.
Angiogram and IVUS images courtesy of Dr. Andrej Schmidt.
While laser-cut nitinol stents are designed and required to be oversized for deployment, the Supera™ Stent is unique in that it is sized 1:1 with the vessel diameter. So as seen in the image below, the laser-cut stents inherently exert force on the vessel wall throughout the lifetime of the stent, which in turn can result in endovascular injury over the long term. The lower chronic outward force (COF) with the Supera™ Stent results in fewer vessel injuries.2,4
|Pushes against the vessel to open, through lifetime of SNS
|Chronic outward force (COF) is exerted on vessel by self-expanding stents due to inherent oversizing
|1:1 sizing allows to scaffold the vessel to maintain open
|Supera™ Stent is sized 1:1 with the prepared vessel and therefore has minimal chronic outward force
Other self-expanding nitinol stents are fashioned from a rigid, inflexible tube that is laser-cut. As shown in the photo below, due to design and materials properties, some laser cut stents are less likely to conform to a dynamic vascular environment and can potentially kink and fracture in tortuous vessels (left).
With the Supera™ Stent, however, individual flexible nitinol wires are interwoven for unparalleled flexibility,3 excellent kink resistance, and the ability to mimic the natural movement of the anatomy21-23 (right).
Consequently, data on over 2,000 patients published in 17 studies have shown that at 1 year the Supera™ Stent has zero fractures.4-20
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