Antimigration property of a newly designed covered metal stent for esophageal stricture: an in vivo animal study

Ji, Jeong‐Seon; Lee, Bo‐In; Kim, Hyung-Keun; Cho, Young-Seok; Choi, Hwang; Kim, Byung‐Wook; Kim, Sang Woo; Kim, Sung‐Soo; Chae, Hiun-Suk; Choi, Kyung-Chul; Maeng, Lee-So

doi:10.1016/j.gie.2011.03.1252

Cited by 12 publications

(5 citation statements)

References 28 publications

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“…Greater anti-migration force decreases the probability of stent migration, thereby reducing the inherent complications associated with stents. However, excessive antimigration force may cause secondary damage to the mucosa due to stent removal [34,35]. The anti-migration test results of the esophageal stent system were similar to the finite element analysis.…”

Section: Anti-migration Test Resultssupporting

confidence: 57%

Numerical Study of the Biomechanical Behavior of a 3D Printed Polymer Esophageal Stent in the Esophagus by BP Neural Network Algorithm

Wu,

Huang,

Liu

et al. 2024

CMES

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Esophageal disease is a common disorder of the digestive system that can severely affect the quality of life and prognosis of patients. Esophageal stenting is an effective treatment that has been widely used in clinical practice. However, esophageal stents of different types and parameters have varying adaptability and effectiveness for patients, and they need to be individually selected according to the patient's specific situation. The purpose of this study was to provide a reference for clinical doctors to choose suitable esophageal stents. We used 3D printing technology to fabricate esophageal stents with different ratios of thermoplastic polyurethane (TPU)/(Polyε-caprolactone) PCL polymer, and established an artificial neural network model that could predict the radial force of esophageal stents based on the content of TPU, PCL and print parameter. We selected three optimal ratios for mechanical performance tests and evaluated the biomechanical effects of different ratios of stents on esophageal implantation, swallowing, and stent migration processes through finite element numerical simulation and in vitro simulation tests. The results showed that different ratios of polymer stents had different mechanical properties, affecting the effectiveness of stent expansion treatment and the possibility of postoperative complications of stent implantation.

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Section: Anti-migration Test Resultssupporting

confidence: 57%

Numerical Study of the Biomechanical Behavior of a 3D Printed Polymer Esophageal Stent in the Esophagus by BP Neural Network Algorithm

Wu,

Huang,

Liu

et al. 2024

CMES

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“…However, complications of vomiting or regurgitations, infection and migration of the B-tube are reported. Other promising techniques include new types of covered stents with antimigration properties (Ji et al 2011), uncovered biodegradable stents (Battersby & Doyle 2010), biodegradable covered stents to reduce fibroblastic proliferation (Zhu et al 2013) and biodegradable polymer stents with shape memory that could improve tolerability (Yu et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Outcome of dogs and cats with benign oesophageal strictures after balloon dilatation or stenting: 27 cases (2002–2019)

Riz

Béguin

Faucher³

et al. 2021

J of Small Animal Practice

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Objectives: Acquired oesophageal strictures remain challenging to manage in canine and feline patients. The aims of this study were to describe the treatment, complications, short-term outcome and long-term follow-up of benign oesophageal strictures treated by balloon dilatation or stenting in dogs and cats and to describe adjunctive techniques to minimise the complication rate of stent placement. Materials and MethOds: Retrospective analysis of medical records of dogs and cats with benign oesophageal stricture diagnosed under endoscopy between 2002 and 2019. results: Eighteen dogs and nine cats were included, representing 39 strictures. Balloon dilatation was used as first-line therapy, with a good outcome in 59% of cases. Stents were placed in eight cases due to stricture recurrence; 88% had a long-term satisfactory outcome. Short-term complications occurred in six of eight cases; migration and aberrant mucosal reaction were uncommon. In three cases, progressive mesh cutting during follow-up reduced discomfort and trichobezoars formation and improved long-term stent tolerance. Overall median survival time was 730 days. clinical significance: Long-term prognosis of balloon dilatation as a first-line therapy for esophageal strictures and of stenting as a rescue therapy was considered satisfactory. Although discomfort associated with stenting was frequent, tolerability might be improved by per-endoscopic adjunctive techniques. a These authors contributed equally.

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“…Another novel design, fully covered metal stent (Hanarostent Skidpoof; M.I. Tech Co, Pyeongtaek, South Korea) was described by Ji et al [38] . This stent has multiple protuberances on its body designed to be separate from the inner silicone membrane so that they can embed into the mucosa.…”

Section: Migrationmentioning

confidence: 99%

Endoscopic management and prevention of migrated esophageal stents

Martins¹,

Retes²,

Medrado³

et al. 2014

WJGE

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The use of self-expandable metallic stents has increased recently to palliate inoperable esophageal neoplasia and also in the management of benign strictures. Migration is one of the most common complications after stent placement and the endoscopist should be able to recognize and manage this situation. Several techniques for managing migrated stents have been described, as well as new techniques for preventing stent migration. Most stents have a "lasso" at the upper flange which facilitates stent repositioning or removal. An overtube, endoloop and large polypectomy snare may be useful for the retrieval of stents migrated into the stomach. External fixation of the stent with Shim's technique is efficient in preventing stent migration. Suturing the stent to the esophageal wall, new stent designs with larger flanges and double-layered stents are promising techniques to prevent stent migration but they warrant validation in a larger cohort of patients.© 2014 Baishideng Publishing Group Co., Limited. All rights reserved.Key words: Endoscopy; Stents; Esophageal cancer; Benign strictures; Complications Core tip: Migration of self-expandable esophageal stents occurs in up to 36% of cases. The lasso system available in most stents provides a safe way to remove or reposition the stent while it is still in the esophagus. However, when the stent migrates into the stomach, other techniques are needed to guarantee a safer retrieval. The use of clipping, suturing or external fixation should be considered for stents at high risk for migration.Martins BC, Retes FA, Medrado BF, Lima MS, Pennacchi CMPS, Kawaguti FS, Safatle-Ribeiro AV, Uemura RS, MalufFilho F. Endoscopic management and prevention of migrated esophageal stents. World J Gastrointest Endosc 2014; 6(2): 49-54 Available from:

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Antimigration property of a newly designed covered metal stent for esophageal stricture: an in vivo animal study

Cited by 12 publications

References 28 publications

Numerical Study of the Biomechanical Behavior of a 3D Printed Polymer Esophageal Stent in the Esophagus by BP Neural Network Algorithm

Numerical Study of the Biomechanical Behavior of a 3D Printed Polymer Esophageal Stent in the Esophagus by BP Neural Network Algorithm

Outcome of dogs and cats with benign oesophageal strictures after balloon dilatation or stenting: 27 cases (2002–2019)

Endoscopic management and prevention of migrated esophageal stents

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