A Comparison of a Fully Covered and an Uncovered Segmented Biodegradable Esophageal Stent in a Porcine Model: Preclinical Evaluation of Degradation, Complications, and Tissue Reactions

<div>Two segmented polydioxanone made biodegradable esophageal stents. (a) An uncovered stent. The stent was with a segmented 28 × 80 mm trunk and two 30 × 10 mm cup ends. The trunk was composed of four independent segments, connected with 4 mm long polydioxanone monofilament. Each segment was woven by double polydioxanone filaments and was 10 mm in length. (b) A fully covered biodegradable stent. A layer of poly-L-lactic acid membrane, 0.5 mm in thickness, was covered to an uncovered stent. Four protrusions, 3 mm in diameter, were attached to each cup end (red arrows).</div>

Gastroenterology Research and Practice

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Figure 1

Figure 1: A Comparison of a Fully Covered and an Uncovered Segmented Biodegradable Esophageal Stent in a Porcine Model: Preclinical Evaluation of Degradation, Complications, and Tissue Reactions 

Figure 1 | A Comparison of a Fully Covered and an Uncovered Segmented Biodegradable Esophageal Stent in a Porcine Model: Preclinical Evaluation of Degradation, Complications, and Tissue Reactions 