Gianturco-Z stent

This is essentially a modified Gianturco Z stent modified to function as a cage to trap the coils within it against the direction of blood flow, while also reducing the risk of proximal or distal coil embolization. It is deployed through a long 8-F introducer sheath [133]. 

Fig. 11.6. a Recurrent overgrowth A Flamingo Wallstent (Boston Scientific, St. Albans, UK) had been inserted for tumour overgrowing a previous Gianturco-Z stent (Cook, Letchworth, UK) (arrow). The lumen is now narrowed by tumour tissue growing over and into the top ofthe Flamingo stent (arrowheads), b A second Flamingo stent is inserted. Expansion is limited by tumour tissue at the top of the previous stent... 

The nitinol Strecker stent was an earlier version of the uncovered Ultrallex stent and is very similar to it Gianturco-Rdsch Z stent... 

The Gianturco and Rosch-Z stents are much stiffer in the longitudinal axis and are also available in a non-covered and a polyethylene-covered version (Fig. 3.3). The non-covered types are cylindrical or flared at each end and available in diameters of 15-35 mm (Fig. 3.3a). The covered oesophageal Z-stent is flared at each end to increase local stability and reduce the risk of migration. The diameter in its mid-portion measures 18 mm and 25 mm at each end (Fig. 3.3b, c). The stent is dehvered through a 28- F (outer diameter) sheath. 

Fig. 3.3a-c. Gianturco-Rosch Z-Stents. a Uncovered colonic Z-stent with flared ends. The shaft measures 25 mm and the flared ends 35 mm in diameter, b, c Covered oesophageal Z-stents come in two versions a stent with uncoated ends (b) and a fully coated stent (c)... 

Rosch J, Uchida BD, Hall LD et al. (1992) Gianturco-Rdsch expandable Z stents in the treatment of superior vena cava syndrome. Cardiovasc Intervent Radiol 15 319-327 Saced M, Newman GE, McCavin RL et al. (1987) Stenoses in dialysis fistulas treatment with percutaneous angioplasty. Radiology 164 693-697... 

Petersen BD, Uchida BT, Barton RE, Keller FS, Rosch J (1995) Gianturco-Rosch Z stents in tracheobronchial stenoses. J Vase Interv Radiol 6 925-931... 

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