Sion Black Pre-shape angioplasty guidewire

Over the years, the retrograde access methods for the percutaneous treatment of chronic total coronary occlusion have undergone multiple adaptations. One of the most important changes is the use of angioplasty guidewires depending on the anatomy of the collateral branches.

The Sion guidewire (Asahi Intecc, Japan) has become the guidewire of choice for crossing these channels when they are invisible, have a highly tortuous anatomy, or have lateral branches arising from curved sections. In such cases, when the Sion guidewire cannot cross the collaterals, a Fileder XT-R guidewire or a Suoh03 guidewire (both made by Asahi Intecc, Japan) are used. At the moment, the third-line option in most cases is the Sion Black (Asahi Intecc, Japan). This guidewire (0.8 g tip load) has been on the market for a while, in two forms: straight or J-shaped. The J-shaped curve is too large and is not suitable for crossing collaterals. In contrast, the straight version, which is often used, is difficult to shape manually due to the rigidity of its polymer coating.

The new version that will be on the market is the Sion Black Pre-shape with an angled tip for crossing collaterals during retrograde access. This curve is much smaller than the current J-shaped version, which means that it does not need to be manually shaped and can be used directly to cross collaterals. The tip shape is designed to provide greater durability throughout the procedure and, even if the angle does require modification, it is easier than with the straight guidewire, and a greater precision and durability are guaranteed.

Palabras clave: guía de angioplastia coronaria, oclusión coronaria crónica total, acceso retrógado. Keywords: coronary angioplasty wire, chronic total occlusion, retrograde access.