Stent polyester

General surgery Esophageal stent Polyester (PET) Monofilament Braided... 

Stents Polypropylene stent covered with Dacron Elgiloy wire and nylon support band covered with polyester and Teflon cloth... 

Biodegradable Polyesters Polymer-Polymer Composites with Improved Properties for Potential Stent Applications... 

Polyester Drug Delivery, Sutures, Stents, Nanoparticles [7-10]... 

Amplatzer Septal Occluder Nitinol with polyester nonwoven Small to large Secundum ASD (maximum = larger than 20 mm) Self-centering device Stent-like... 

The Medtronic Talent device is a stent graft constructed from a plain woven polyester fabric and a nitinol stent frame. The bifurcated device for the abdominal aorta has a bare suprarenal stent, but no hooks or barbs. The thoracic stent graft has been replaced by the Valiant device (see below). Early Talent devices had a rigid longitudinal bar that was meant to provide columnar support. However, this component signihcantly decreased the flexibility of the device, and so has been discontinued in more recent models. 

The Cook Zenith AAA endovascular graft was approved for use by the FDA in May 2003 (FDA 2013). It contains three different components the main graft module, the contralateral limb module, and the ipsilateral iliac extension (Fig. 21.12). All of these are constructed with a full-thickness woven polyester fabric attached to self-expanding stainless steel Cook-Z stents with braided polyester and monofilament polypropylene sutures. The distal end of the main body has a bare stainless steel stent designed to allow suprarenal fixation without disrupting blood flow through the renal arteries (Fig. 21.13). The stent also has hooks on each strut spaced 3 mm apart that are intended to dig into the aortic wall and prevent migration (Fig. 21.13). The proximal covered stent, located just below the bare suprarenal stent. 

In 2010 Cook Medical launched a new three-piece modular device with an 18 Fr hydrophilic braided sheath and a lower-profile polyester woven graft fabric. While it has received its CE mark in Europe, it is still going through clinical trials in the United States. The TX2 is Cook s thoracic stent-graft. It also comes in a low-profile (LP) iteration. 

The Seta device from Latecba departs from traditional devices, in that it uses a balloon-expandable stent and a knitted polyester graft. It is felt that the balloon-expandable stent may decrease the risk of aortic neck dilatation and mold more favorably to the aorta. Also, there is a suggestion that the knitted graft material may encourage better tissue incorporation. 

The Incraft device from Cordis is a modular, low-profile system using nitinol stent rings and a tubular polyester graft fabric. It uses active suprarenal fixation and an active locking mechanism between components. It has the ability to increase its length in situ. 

The Fortevo device from Aptus capitalizes on Aptus experience with their endovascular Helifx anchoring device, which is similar to the helical tacks used to fix meshes in laparoscopic hernia repair. The Fortevo is a modular device made from nitinol stents and a woven polyester graft. This device uses separate endoanchors to secure the proximal fixation zone. 

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