Stent dislocation

Another development to prevent stent dislocation is the Reynders stent (Reynders Medical Supply, Lennik, Belgium), which is a screw-thread plastic prosthesis. The stent clicks into the tracheal cartilage rings, thus providing better airway-wall adherence. It also has a greater rigidity than sificone stents (Noppen et al. 1996,1999). 

In the series of Strecker stent placement in 21 patients, complications were reported in two. One stent compression and one stent dislocation occurred in two patients. Both stents were removed without problems (WiTT et al. 1997). In a smaller trial, one Strecker stent out of five dislocated 6 days after placement (ScHMiDT et al. 1999). In the series of Hauck et al. (1997), tumor ingrowth through the stent was seen in nine of 51 patients treated with Strecker or nitinol stents. Stent deformation occurred only with Strecker stents ( =12), but not in nitinol stents. Mucus retention was a frequent problem within the first 7 days after stent placement (39%). 

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