Woven fabric graft

Lin, F.-H., Chen, T.-M., Chen, K.-S., Wu, T.-H., Chen, C.-C. (2000). An animal study of a novel tri-layer wound dressing material— non-woven fabric grafted with N-isopropyl acrylamide and gelatin. Materials Chemistry and Physics, 64(3), 189-195. 

Recovery of significant metal ions from seawater and aqueous wastes by adsorbents synthesized by graft polymerization — Polyethylene based hollow fibres and non-woven fabrics have been used to radiation graft various monomers for subsequent amidoximation to remove uranyl and vanadyl ions from seawater [14, 15],... 

Chen JP and Chiang YP, Surface modification of non-woven fabric by DC pulsed plasma treatment and graft polymerization with acrylic acid, Journal of Membrane Science, 270 (1), 2006, pp 212-220. 

Battery separators having carboxylic acid group were prepared by radiation-induced grafting of acrylic acid onto a polyolefin non woven fabric (PNF). The PNF... 

A major limitation of knitted fabrics is porosity, which, due to the nature of the loop structure, tends to be high and cannot be reduced below a certain minimum value. Figure 1.15b shows a knitted graft with visible pores. Also because the yarns are looped and bent, that is, not nearly as extended as with woven materials, the fabrics tend to be relatively weaker. A general comparison of the tensile properties of the three structures covered, assuming similar weights and yam material, is given in Fig. 1.17. 

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 The thoracic stent graft has been replaced by the Valiant device (see below).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. 

Plain woven structures (a) fabric showing warp and weft yarns with crimp due to interlacings at the cross-over points and (b) finished prostheses with warp along and weft across the graft axis. 

Mize lie SW, Property Structure Correlation in Small Diameter Vascular Grafts , MS thesis. North Carolina State University, Raleigh, NC 27695, USA, 1997. Moghe AK, Study and Characterization of Small Diameter Woven Tubular Fabrics , MS thesis. North Carolina State University, Raleigh, NC 27695, USA, 2002. 

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