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Journal articles on the topic 'Metal stent'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Daróczi, Tímea, Renáta Bor, Anna Fábián, et al. "A fém- és műanyag stentek költséghatékonysága malignus epeúti szűkületek esetében – összehasonlító vizsgálat." Orvosi Hetilap 157, no. 7 (2016): 268–74. http://dx.doi.org/10.1556/650.2016.30365.

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Introduction: Self-expandable metal and plastic stents can be applied in the palliative endoscopic treatment of patients with unresectable malignant biliary obstruction. The use of metal stentsis recommended if the patient’s life expectancy is more than four months. Aim: To compare the therapeutic efficacy and cost-effectiveness of metal and plastic stents in the treatment of malignant biliary obstruction. Method: The authorsretrospectively enrolledpatients who received metal (37 patients) or plastic stent (37 patients). The complication rate, stent patency and cumulative cost of treatment wer

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Bi, Yonghua, Jindong Li, Mengfei Yi, Zepeng Yu, Xinwei Han, and Jianzhuang Ren. "Self-expanding segmental radioactive metal stents for palliation of malignant esophageal strictures." Acta Radiologica 61, no. 7 (2019): 921–26. http://dx.doi.org/10.1177/0284185119886315.

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Background Traditional metal stents are not always suitable for patients with circuitous malignant esophageal stricture. Purpose We aimed to report the safety and effectiveness of stent insertion using self-expanding segmental radioactive metal stent in the palliation of malignant esophageal stricture. Material and Methods We conducted a retrospective analysis of 22 consecutive patients who underwent insertion of segmental radioactive metal stents from November 2016 to March 2019. Technical success, dysphagia score, and complications were analyzed. Kaplan–Meier analysis was used to analyze the

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Bocharov, Aleksandr V., and Leonid V. Popov. "Long-term results of stenting of long coronary artery stenosis with consecutive implantation of stents of different types with overlapping edges in patients with acute coronary syndrome without ST-segment elevation and multivessel coronary artery disease." Journal of Clinical Practice 10, no. 2 (2019): 53–59. http://dx.doi.org/10.17816/clinpract10253-59.

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Introduction. In urgent interventional cardiology practice, combinations of drug-eluting stents and bare-metal stents are sometimes forced to treat extended stenosis in a clinic-dependent artery. Objective. A comparison of long-term results of treatment of patients with coronary heart disease and multivessel coronary lesions, which performed stenting of the clinic-dependent artery by two successive partially overlapping stents using stents of the 3rd generation with drug coating or a combination of the 3rd generation stent with drug coating and a bare-metal stent for acute coronary syndr

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Gopalakrishnan, Mukesh, and Amir Lotfi. "Stent Thrombosis." Seminars in Thrombosis and Hemostasis 44, no. 01 (2017): 046–51. http://dx.doi.org/10.1055/s-0037-1606178.

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AbstractThe most dreaded complication with percutaneous coronary intervention with stents, either bare-metal or drug-eluting stents is stent thrombosis (ST) and it has a significant detrimental effect on the outcome for the patient. The initial attempts at intervention with bare-metal stents had much higher rates of ST compared with what is currently prevailing in the modern interventional world. Significant changes with respect to the stent technology, pharmacology, and most importantly our understanding of this phenomenon have decreased the risk of ST. There are many factors that can be perf

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Xu, Xiangshan, Lijie Wang, Guofeng Wang, and Yuanzhe Jin. "The effect of REDV/TiO2 coating coronary stents on in-stent restenosis and re-endothelialization." Journal of Biomaterials Applications 31, no. 6 (2016): 911–22. http://dx.doi.org/10.1177/0885328216675829.

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The coronary artery stent has been widely used in clinic. In-stent restenosis was mainly caused by the excessive proliferation of smooth muscle cell and the inflammation due to the metal ion released from stent scaffold of the drug-eluting stent. Thus, to reduce the in-stent restenosis and promote the vascular endothelialization have become a hot research point in this area. In this paper, a nano-TiO2 ceramic coating was deposited on 316L stainless steel to reduce the metal ion release and to inhibit the inflammation reaction. An endothelia cell selective adhesion peptide Arg-Glu-Asp-Val (REDV

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So, Hoonsub, Chi Hyuk Oh, Tae Jun Song, et al. "Predictors of stent dysfunction in patients with bilateral metal stents for malignant hilar obstruction." PLOS ONE 16, no. 3 (2021): e0249096. http://dx.doi.org/10.1371/journal.pone.0249096.

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Introduction For unresectable hilar obstruction, restoring and maintaining biliary ductal patency are crucial for improved survival and quality of life. The endoscopic placement of stents is now a mainstay of its treatment, and bilateral stenting is effective for biliary decompression. This study aimed to determine the clinical outcomes of bilateral metal stent placement using large cell-type stents and the clinical predictors of stent dysfunction in patients with malignant hilar obstruction. Methods We performed a retrospective analysis of patients who underwent bilateral metal stent placemen

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Singer, Jordan L., Amir H. Aryaie, Mojtaba Fayezizadeh, Jon Lash, and Jeffrey M. Marks. "Predictive Factors for the Migration of Endoscopic Self-Expanding Metal Stents Placed in the Foregut." Surgical Innovation 24, no. 4 (2017): 353–57. http://dx.doi.org/10.1177/1553350617702026.

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Background. With recent advancements in endoscopy, self-expandable metal stents (SEMS) have been used to treat gastrointestinal leaks, perforations, and strictures. Stent migration frequently complicates management and often requires additional treatments to reach resolution. Our study aimed to determine predictive factors for stent migration. Methods. Consecutive procedures involving SEMS placed with and without fixation after upper gastrointestinal surgery between 2009 and 2014 were retrospectively reviewed. Demographic, surgical history, rate of stent migration, and stent characteristic dat

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Chandnani, Madhuri, Jonah Cohen, and Tyler M. Berzin. "Combined Approach of Cryoablation and Stent-In-Stent Technique for Removal of an Embedded Esophageal Stent." Case Reports in Gastrointestinal Medicine 2018 (September 25, 2018): 1–4. http://dx.doi.org/10.1155/2018/8619252.

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Self-expanding removable stents are used for the treatment of esophageal strictures. Partially covered metal stents become embedded in the esophageal wall due to mucosal tissue reaction providing good anchorage. This can also lead to extreme difficulty in the removal of such stents. Several different individual techniques have been used in literature for removal of these esophageal stents. Ours is the first case using a combination of cryoablation and stent-in-stent technique for removal of an extremely difficult case of embedded esophageal stent.

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Zhang, Xilong, Lei Li, and Zhongshan Deng. "Liquid Metal-Based Flexible Bioelectrodes for Management of In-Stent-Restenosis: Potential Application." Biosensors 13, no. 8 (2023): 795. http://dx.doi.org/10.3390/bios13080795.

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Although vascular stents have been widely used in clinical practice, there is still a risk of in-stent restenosis after their implantation. Combining conventional vascular stents with liquid metal-based electrodes with impedance detection, irreversible electroporation, and blood pressure detection provides a new direction to completely solve the restenosis problem. Compared with conventional rigid electrodes, liquid metal-based electrodes combine high conductivity and stretchability, and are more compliant with the implantation process of vascular stents and remain in the vasculature for a lon

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Hu, Patrick P., and Ehtisham Mahmud. "Sirolimus Eluting Stents." Clinical Medicine Insights: Therapeutics 2 (January 2010): CMT.S2094. http://dx.doi.org/10.4137/cmt.s2094.

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The sirolimus-eluting stent (SES) Cypher was the first commercially available drug-eluting stent. The use of this stent has resulted in significantly lower rates of restenosis and lesion revascularization compared to bare metal stents and balloon angioplasty. In this review, angiographic and clinical outcomes in patients treated with SES are compared to those treated with bare metal stents and other drug-eluting stents. Furthermore, efficacy and safety outcomes of SES in complex lesions (left main stenosis, bifurcation lesions, chronic total occlusions, long lesions and small vessels) and high

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Almasood, Ali S., Xavier Freixa, Sohail Q. Khan, Peter H. Seidelin, and Vladimír Džavík. "Stent Fracture after Everolimus-Eluting Stent Implantation." Cardiology Research and Practice 2011 (2011): 1–5. http://dx.doi.org/10.4061/2011/320983.

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Compared with bare-metal stents, drug-eluting stents (DES) have greatly reduced the risk of in-stent restenosis (ISR) by inhibiting neointimal growth. Nevertheless, DES are still prone to device failure, which may lead to cardiac events. Recently, stent fracture (SF) has emerged as a potential mechanism of DES failure that is associated with ISR. Stent fracture is strongly related to stent type, and prior reports suggest that deployment of sirolimus eluting stents (SES) may be associated with a higher risk of SF compared to other DES. Everolimus eluting stents (EESs) represent a new generation

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Nita, D., Irinel Raluca Parepa, Laura Mazilu, Andra-Iulia Suceveanu, Luminita Matei, and Liliana-Ana Tuta. "“Bare Metal” Stent Placement Complications: Interventional Treatment." ARS Medica Tomitana 22, no. 4 (2016): 285–89. http://dx.doi.org/10.1515/arsm-2016-0048.

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Abstract The rapid implementation of stents in standard practice and expansion of the indication for their utilization also introduced a new problem: in-stent restenosis. Management of patients with restenosis after stent implantation is still considered an important clinical problem. Although balloon angioplasty is still one of the prefered strategies that provide satisfactory results and a low incidence of complication, repeat stenting with “drug eluting” stents or “drug balloon” angioplasty become a very atractive methods of treatment for selected lesions and patients.

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Bentham, James R., Nilesh Oswal, and Robert Yates. "Stenting across head and neck vessels using covered stents for persisting aortic arch obstruction." Cardiology in the Young 22, no. 5 (2012): 610–14. http://dx.doi.org/10.1017/s1047951112000236.

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AbstractObjectiveTo describe endovascular stent placement using partially covered stents to preserve flow in head and neck vessels.BackgroundEndovascular stent placement has become established as a first-line therapy for native coarctation of the aorta or re-coarctation in older children and adults. Increasingly covered stents are becoming the preferred option over bare-metal stents because of the perceived lower risk of aneurysm formation. Open-cell bare-metal stents are chosen when there is a high likelihood of jailing a head and neck vessel. Here we describe partial uncovering of a covered

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Abreo, Kenneth, and Adrian Sequeira. "Role of stents in hemodialysis vascular access." Journal of Vascular Access 19, no. 4 (2018): 341–45. http://dx.doi.org/10.1177/1129729818761280.

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Stents are ubiquitously utilized in coronary and peripheral arterial disease. Interventional nephrologists, however, place stents in the venous outflow of the arteriovenous access. Stenosis is the predominant pathology that causes access dysfunction and will ultimately lead to thrombosis if uncorrected. Angioplasty and stent deployment are the current techniques available to combat stenosis. From initial bare metal stainless steel stents, the current generations of stents used are predominately covered nitinol stents. The latest randomized control trials reveal that stents decrease the number

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Lukman, Siti Khadijah, Rania Hussien Al-Ashwal, Ahmad Zahran Md. Khudzari, and Syafiqah Saidin. "Emerging of cardiovascular metal stent: A review on drug-eluting stent towards the utilisation of herbal coating." Malaysian Journal of Fundamental and Applied Sciences 15, no. 2 (2019): 225–31. http://dx.doi.org/10.11113/mjfas.v15n2.1115.

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Metal stents used in the treatment of percutaneous coronary intervention (PCI) have revolutionized in treating atherosclerosis disease. Starting from the emergence of bare metal stent (BMS), this stent has been progressively developed into drug-eluting stent (DES) and biodegradable stent. By focusing on DES, various drugs have been used to coat metal stent with the aims to overcome in-stent restenosis and stent thrombosis. Even though, both problems are covered successfully by DES, however, DES projects long term complications including late stent thrombosis and delayed endotheliasation. There

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Montero, Alberto J., Lisa M. Meckley, Ayanna M. Anene, Tanya G. K. Bentley, Jesse D. Ortendahl, and Jose M. Martinez. "Cost-effectiveness of metal stents in pancreatic cancer." Journal of Clinical Oncology 32, no. 3_suppl (2014): 260. http://dx.doi.org/10.1200/jco.2014.32.3_suppl.260.

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260 Background: American Society for Gastrointestinal Endoscopy guidelines recommend endoscopic metal stent placement for pancreatic carcinoma patients with biliary obstruction and estimated life expectancy of >6 months. Because life expectancy of many such patients has until now been <6 months, plastic stents are frequently placed. Recent phase III trials demonstrated that compared with current standards of care, treatment with chemotherapy regimens FOLFIRINOX and gemcitabine/nab-paclitaxel significantly prolonged overall survival (OS) well beyond the 6-month range. Given this prolonged

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Levy, Elad I., Ricardo A. Hanel, Jay U. Howington, et al. "Sirolimus-eluting stents in the canine cerebral vasculature: a prospective, randomized, blinded assessment of safety and vessel response." Journal of Neurosurgery 100, no. 4 (2004): 688–94. http://dx.doi.org/10.3171/jns.2004.100.4.0688.

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Object. Use of the sirolimus-eluting stent has led to a reduction of in-stent stenosis following treatment of coronary atherosclerosis, whereas treatment of intracranial atherosclerosis with bare-metal stents results in excessive restenosis rates of approximately 40%. Neurotoxicity effects and vessel injury are unknown in the cerebral vasculature. To assess the safety profile and vascular effects of sirolimus-coated stents, the authors conducted a prospective comparative study in which drug-eluting and bare-metal stents were implanted in the canine basilar artery (BA). Methods. Sixteen mongrel

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Sibbing, Dirk, Karl-Ludwig Laugwitz, Lorenz Bott-Flügel, and Jürgen Pache. "Very Late Stent Thrombosis 42 Months after Implantation of Sirolimus-Eluting Stent and Discontinuation of Antiplatelet Therapy." Case Reports in Medicine 2009 (2009): 1–2. http://dx.doi.org/10.1155/2009/713292.

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Although safety profiles of sirolimus-eluting stents do not seem to differ in short-to-medium term from those of bare-metal stents, late stent thrombosis after deployment of drug-eluting stents has emerged as a potential safety concern in the era of high-pressure stent implantation. Here, we describe the case of a patient with acute myocardial infarction due to stent thrombosis of a sirolimus-eluting stent 42 months after stent deployment and 5 weeks after discontinuation of aspirin treatment. To the best of our knowledge, this is one of the most delayed cases of sirolimus-eluting stent thromb

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Due-Petersson, Rasmus, and Lasse Bremholm Hansen. "Lumen-apposing metal stent for treatment of malignant biliary obstruction, placed through an uncovered duodenal self-expanding metal stent." BMJ Case Reports 14, no. 4 (2021): e238599. http://dx.doi.org/10.1136/bcr-2020-238599.

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The development and refinement of endoscopic stenting techniques in recent years have made endoscopic treatment an important part of palliative care for irresectable malignant disease in the gastrointestinal tract. We present the case of a 82-year-old man with biliary obstruction and duodenal stenosis on the basis of disseminated pancreatic cancer. He was bothered by jaundice and reduced oral intake. This is typically alleviated using stents; however, the placement of a duodenal stent can limit the possibility of subsequent placement of a biliary stent. This therapeutic challenge was solved us

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Shen, Xiang, Zhong Min Xie, Yong Quan Deng, and Song Ji. "Effects of Metal Material Stent Design Parameters on Longitudinal Stent Strength." Key Engineering Materials 723 (December 2016): 299–304. http://dx.doi.org/10.4028/www.scientific.net/kem.723.299.

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The longitudinal stent deformation (LSD) was usually caused by the external force in the blood vessel. The effects of metal material stent design parameters on the longitudinal stent strength (LSS) were studied using finite element method (FEA). A longitudinal stent compression model was developed and a rigid surface was used to compress the stent after stent deployment in coronary arteries. Results showed that the connector length, the strut amplitude and the curvature radius at the crown junctions influenced the LSS hardly. However, the number of connector played the most significant role in

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BOKOV, PLAMEN, PHILIPPE DANTAN, and PATRICE FLAUD. "PALMAZ–SCHATZ STENT-OPENING MECHANICS USING A SIMPLE APPROACH INVOLVING THE BALLOON–STENT AND STENT–ARTERY CONTACT PROBLEM: APPLICATION TO BIOPOLYMER STENTS." Journal of Mechanics in Medicine and Biology 19, no. 03 (2019): 1950009. http://dx.doi.org/10.1142/s021951941950009x.

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We used the finite element method-based toolbox COMSOL Multiphysics to address the important question of biopolymer coronary stent mechanics. We evaluated the diameter of the stent, the immediate elastic recoil, the dogboning and the foreshortening during deployment while using an idealized model that took into account the presence of the balloon and the coronary artery wall (equivalent pressure hypothesis). We validated our model using the well-known mechanics of the Palmaz–Schatz metal stent and acquired new data concerning a poly-L-lactic acid (PLLA) stent and some other biodegradable co-po

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Jumat, Mohamad Amin, Kugambikai Vangetaraman, Aisyah Ahmad Shafi, Norhidayu Muhamad Zain, and Syafiqah Saidin. "Biodegradable Polymeric Stent: Poly(lactic acid) Variation." Journal of Human Centered Technology 2, no. 2 (2023): 19–25. http://dx.doi.org/10.11113/humentech.v2n2.53.

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Stenting is a treatment procedure to insert an implant-like needle into the blood vessel for the purpose of removing plaque and thrombosis while supporting the weak blood vessel. This procedure will enlarge the narrow blood vessel and restore blood circulation. Specifically, stent implantation is being combined with coronary angioplasty procedure to be known as percutaneous coronary intervention (PCI), which is an approach to treat cardiovascular diseases (CVD). There are three main variations of commercialized stents: Bare metal stent, drug-eluting stent and biodegradable stent. These three v

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Ito, Kei, Naotaka Fujita, Yutaka Noda, et al. "Newly Developed Fully Covered Metal Stent for Unresectable Malignant Biliary Stricture." Diagnostic and Therapeutic Endoscopy 2010 (October 19, 2010): 1–4. http://dx.doi.org/10.1155/2010/903520.

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We herein report two patients with unresectable malignant biliary stricture who underwent stenting with a newly developed fully-covered metal stent. In the first case of lower-middle bile duct cancer, a stent was placed through the stenosis. In the second case of middle bile duct stricture due to lymph node metastases from gallbladder cancer, a stent was placed in the bile duct across the stenosis. No procedure-related complications were observed. Unevenness of the outer surface and a low shortening ratio are expected to lessen the occurrence of complications characteristic of covered metal st

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Rumble, William T., James M. Lonie, Michael Donovan, and Chris Kia. "Case report of rare cause of small bowel obstruction: distal migration of metal biliary stent requiring enterotomy." International Surgery Journal 11, no. 8 (2024): 1343–46. http://dx.doi.org/10.18203/2349-2902.isj20242129.

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Endoscopic biliary stent placement is a mainstay in the management of biliary strictures both malignant and benign. Distal stent migration is a known complication of metal biliary stents, however small bowel obstruction or perforation are rare. In this report from a tertiary referral centre, we detail a mid-small bowel obstruction caused by covered metal stent migration requiring a laparotomy and enterotomy for definitive management. A 69-year-old male was admitted to the Sunshine Coast University Hospital with obstructive jaundice on a background of previous metal biliary stent placement. On

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Haal, Sylke, Jeanin van Hooft, Erik Rauws, Paul Fockens, and Rogier Voermans. "Stent patency in patients with distal malignant biliary obstruction receiving chemo(radio)therapy." Endoscopy International Open 05, no. 11 (2017): E1035—E1043. http://dx.doi.org/10.1055/s-0043-117953.

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Abstract Background and study aims Recent literature suggests that chemo(radio)therapy might reduce the patency of plastic stents in patients with malignant biliary obstruction. Whether this might also be valid for other types of stents is unknown. The aim of this study was to determine the influence of chemo(radio)therapy on the patency of fully-covered self-expandable metal stents (FCSEMSs) and plastic stents. Patients and methods We retrospectively reviewed the electronic medical records of patients with distal malignant biliary obstruction who underwent biliary stent placement between Apri

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Chang, Ming-Yen, Hsing-Hui Huang, and Chia-Kai Lu. "Design of a Self-Expanding Stent Mechanism Enacted by Fluid Pressure Difference." Applied Sciences 11, no. 21 (2021): 10114. http://dx.doi.org/10.3390/app112110114.

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In this study, the design of a metal stent which expands under the influence of a difference in hydraulic pressure is presented. Using the action of existing stents as a reference, the joint of the metal stent model is joined, to lock its own elastic force. The maximum energy storage formula was applied to determine if the joint could withstand the elastic force that is integral to the stent model. Simulations of the stent, under the influence of differences in hydraulic pressure, were performed. During simulation, the fluid pressure, the width of the joint of the stent, the angle of the pipe

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Shah, Jimil, and Surinder Singh Rana. "Newer Stents for Unresectable Malignant Distal Biliary Obstruction: Striving for Perfection!" Journal of Digestive Endoscopy 12, no. 01 (2021): 059–62. http://dx.doi.org/10.1055/s-0041-1728841.

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AbstractEndoscopic biliary stenting is one of the most commonly used palliative procedure in patients with unresectable malignant distal biliary obstruction. Biliary stenting can be performed with either plastic or metallic stents. Stent occlusion and migration are important limitations of currently available stents. Variety of newer stents with varying designs and stent materials like stents with antimigratory properties, antireflux stents, drug-eluting stents, radioactive stents, and bioabsorbable stents are being developed to overcome the limitations of currently available stents. In this a

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Wu, Chi-Huan, Sheng-Fu Wang, Mu-Hsien Lee, et al. "Efficacy of Fully Covered Self-Expandable Metal Stents for Distal Biliary Obstruction Caused by Pancreatic Ductal Adenocarcinoma: Primary Metal Stent vs. Metal Stent following Plastic Stent." Cancers 15, no. 11 (2023): 3001. http://dx.doi.org/10.3390/cancers15113001.

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Fully covered self-expandable metallic stents (FCSEMSs) are inserted in patients with unresectable pancreatic ductal adenocarcinoma (PDAC) to resolve malignant distal bile duct obstructions. Some patients receive FCSEMSs during primary endoscopic retrograde cholangiopancreatography (ERCP), and others receive FCSEMSs during a later session, after the placement of a plastic stent. We aimed to evaluate the efficacy of FCSEMSs for primary use or following plastic stent placement. A total of 159 patients with pancreatic adenocarcinoma (m:f, 102:57) who had achieved clinical success underwent ERCP w

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Chirde, Satish Rameshrao, and Rajat S. Dalal. "A Rare Presentation of Coronary Aneurysm following Bare-metal Stent." Vidarbha Journal of Internal Medicine 32 (August 10, 2022): 138–40. http://dx.doi.org/10.25259/vjim_7_2022.

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We present a case of post-percutaneous transluminal coronary angioplasty with a bare-metal stent to the right coronary artery (RCA). He presented with acute ST-elevation inferior wall myocardial infarction. Coronary angiography showed an aneurysm of proximal RCA extending from the proximal end of the stent to the distal end. There was a 90% discrete lesion beyond the stent with TIMI III flow. The development of coronary artery aneurysms (CAAs) was reported even before the era of stents. CAA can develop after plain balloon angioplasty, after directional coronary atherectomy, and after bare-meta

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Li, Jingzhi, Yang Hua, Laurence Needleman, et al. "Arterial occlusions increase the risk of in-stent restenosis after vertebral artery ostium stenting." Journal of NeuroInterventional Surgery 11, no. 6 (2018): 574–78. http://dx.doi.org/10.1136/neurintsurg-2018-014243.

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ObjectiveThe study was designed to investigate if vascular occlusion in the internal carotid artery (ICA) or the contralateral vertebral artery (VA) contribute to developing in-stent restenosis (ISR) in patients with vertebral artery ostium stenosis (VAOS).Methods420 consecutive patients treated with VAOS stents (from a population of 8145 patients with VAOS) from January 2013 to December 2014 were analyzed in this retrospective study; 216 with drug eluted stents and 204 with bare metal stents. Based on pre-stent DSA findings, patients were divided into four groups: both carotid and vertebral a

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Kovács, Miksa, Dóra Károly, and László Dévényi. "Comparing Two Examination Methods for Measuring Metal to Artery Ratio of Coronary Stents." Materials Science Forum 812 (February 2015): 113–18. http://dx.doi.org/10.4028/www.scientific.net/msf.812.113.

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This article shows two examination methods to measure the metal to artery ratio of stents. Our goal was to further develop the previously used measuring method in order to make it suitable for the integration into the quality control process of endovascular stent manufacture to provide more realistic data. The previous method was performed manually using rotating equipment under a stereomicroscope. The new method is an automatic method using an integrated scanner and a rotating engine. Both methods aimed at converting the cylindrical stent into a flattened two-dimensional image in order to ena

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Sasaki, Takashi, Shuntaro Yoshida, Hiroyuki Isayama, et al. "Short-Term Outcomes of Colorectal Stenting Using a Low Axial Force Self-Expandable Metal Stent for Malignant Colorectal Obstruction: A Japanese Multicenter Prospective Study." Journal of Clinical Medicine 10, no. 21 (2021): 4936. http://dx.doi.org/10.3390/jcm10214936.

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(1) Background: Endoscopic colorectal stenting with high technical success and safety is essential in discussing the oncological outcomes for the management of malignant colorectal obstruction. Mechanical properties of self-expandable metal stents are usually considered to affect clinical outcomes. (2) Methods: A multicenter, prospective study was conducted in Japan. A self-expandable metal stent with low axial force was inserted endoscopically. The primary endpoint was clinical success, defined as the resolution of symptoms and radiological findings within 24 h. Secondary endpoints were techn

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Luigiano, Carmelo, Milena Di Leo, Leonardo Henry Eusebi, et al. "Management of Leaks Following Laparoscopic Sleeve Gastrectomy Using Specifically Designed Large Covered Metal Stents." Reviews on Recent Clinical Trials 16, no. 3 (2021): 303–8. http://dx.doi.org/10.2174/1574887116666210204142417.

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Background: Leaks are the major complication associated with laparoscopic sleeve gastrectomy. Objective: The study aimed to assess the efficacy and safety of specifically designed large covered metal stents for the management of post-laparoscopic sleeve gastrectomy leaks. Methods: Prospectively collected databases from three Italian Endoscopy Units were reviewed. The primary outcome of the study was to evaluate the clinical success of stents placement, defined as complete resolution of clinical and laboratory signs of sepsis with radiological evidence of leak closure. Secondary outcomes were s

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Bohle, Wolfram, Ioannis Louris, Andre Schaudt, Joerg Koeninger, and Wolfram G. Zoller. "Predictors for Treatment Failure of Self-Expandable Metal Stents for Anastomotic Leak after Gastro-Esophageal Resection." Journal of Gastrointestinal and Liver Diseases 29, no. 2 (2020): 145–49. http://dx.doi.org/10.15403/jgld-463.

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Background and Aims: Self-expandable metal stents are used for the treatment of anastomotic leaks after gastro- esophageal surgery. Predictors for treatment failure and complications are unknown. In this observational retrospective study, we summarize our experience with self-expandable metal stents for the treatment of anastomotic leaks, in order to determine the predictors of treatment failure. Methods: Between 2009 and 2015, 34 patients with anastomotic leak after curative resection of gastro- esophageal cancer were treated with self-expandable metal stents. Gender, histology, comorbi

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Moon, Sung-Hoon. "Endoscopic Management of Benign Pancreatic Stricture Associated with Chronic Pancreatitis." Korean Journal of Medicine 99, no. 6 (2024): 284–89. https://doi.org/10.3904/kjm.2024.99.6.284.

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The most common symptom of chronic pancreatitis is abdominal pain. Potential causes include ductal hypertension due to pancreatic stricture, bile duct stricture, duodenal stricture, the presence of a pseudocyst, and increased nociception. In the management of main pancreatic ductal strictures associated with chronic pancreatitis, an endoscopic pancreatic sphincterotomy is typically performed, followed by stricture dilation and the insertion of a single plastic stent. If pancreatic stones are present, extracorporeal shockwave lithotripsy may also be necessary. After placing a plastic stent in t

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Markovic, Z., D. Masulovic, B. Markovic, P. Anojcic, and A. Mladenovic. "Kako prevenirati tkivno urastanje i inkrustaciju metalnih stentova urinarnog trakta kod bolesnika sa osnovnom malignom bolescu male karlice?" Acta chirurgica Iugoslavica 56, no. 4 (2009): 171–73. http://dx.doi.org/10.2298/aci0904171m.

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At the current level of stent application in urology each irreversible urostasis contraindicated for surgical therapy implies consideration of indications for metal stent insertion. Stent incrustation which leads directly into a new uroobstruction is a characteristic complication of this method. Available experience in different uroobstructive conditions has shown that very different clinical aspects of stent usage may directly determine the possibility of their incrustation. Stent incrustation may occur in the early postprocedural course or several months later. After that, prevention of sten

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Whitbeck, Matthew G., and Robert J. Applegate. "Second Generation Drug-Eluting Stents: A Review of the Everolimus-Eluting Platform." Clinical Medicine Insights: Cardiology 7 (January 2013): CMC.S11516. http://dx.doi.org/10.4137/cmc.s11516.

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Everolimus-eluting stents (EES) represent the next generation of drug-eluting stents (DES). Important design modifications include thin strut stent backbones, less inflammatory and more biocompatible polymers, and lower drug dosing. The cobalt chromium EES fluoropolymer XIENCE V stent has been the most extensively studied of such stents. In animal models, this stent demonstrated minimal vessel inflammation, a biologically active endothelium with strut coverage similar to a bare metal stent, and inhibition of intimal hyperplasia comparable to that seen with sirolimus-eluting stents. The SPIRIT

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Major, Stepan, Stepan Hubalovsky, and Josef Šedivý. "Combined Corrosion and Fatigue Degradation of Nitinol Implants." Advanced Materials Research 712-715 (June 2013): 474–77. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.474.

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Nitinol is metal alloy of nickel and titanium. It has wide range of applications. The most significant application is production of self-expanding stent-grafts, which are commonly used in vascular surgery. Stent-graft manufactures are confronted with two basic requirements: stents must have an infinite life; stents must be made of the thinnest wires us possible. Stent-graft failure or device fatigue remains major concern for stent-graft manufactures and researches. The stent-grafts are mechanically loaded, and also the device is placed in very aggressive environment. The corrosion stability of

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Jamshidi, Mehdi, Mahmoud Rajabian, Michael B. Avery, et al. "A novel self-expanding primarily bioabsorbable braided flow-diverting stent for aneurysms: initial safety results." Journal of NeuroInterventional Surgery 12, no. 7 (2019): 700–705. http://dx.doi.org/10.1136/neurintsurg-2019-015555.

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IntroductionThe advent of metal flow-diverting stents has provided neurointerventionalists with an option for treating aneurysms without requiring manipulations within the aneurysm sac. The large amount of metal in these stents, however, can lead to early and late thrombotic complications, and thus requires long-term antiplatelet agents. Bioabsorbable stents have been postulated to mitigate the risk of these complications. Here we present early data on the first self-expandable primarily bioabsorbable stent for aneurysms.MethodsBraided stents were developed using poly-L-lactic acid fibers with

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Zhao, Yaping, Zhong Chen, Wayne W. Zhang, Sheng Wang, Yaoguo Yang, and Liao Yang. "Bioabsorbable Drug-Eluting Stent Versus Bare Metal Stent in Iliac Artery Evaluated by Optical Coherence Tomography: An In Vivo Study in Porcine." Vascular and Endovascular Surgery 52, no. 7 (2018): 512–19. http://dx.doi.org/10.1177/1538574418783528.

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Objective: This study aimed to compare, using optical coherence tomography (OCT), the outcomes of bioabsorbable drug-eluting stent with those of bare metal stent (BMS) following implantation in porcine iliac artery. Methods: After the placement of BMS and bioabsorbable drug-eluting stents, we used OCT and digital subtraction angiography to investigate stent appositions, arterial neointima, evagination, and restenosis at 1 and 3 months. Results: At 1 and 3 months after stent implantation, OCT study was performed to investigate 32 stents and 21 788 struts. Thirty-three malapposed struts were fou

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Rosenbusch, Lena, Robert Schuon, Tamara Wilfling, et al. "Investigation of Stent Prototypes for the Eustachian Tube in Human Donor Bodies." Bioengineering 10, no. 6 (2023): 743. http://dx.doi.org/10.3390/bioengineering10060743.

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Chronic otitis media is often connected to Eustachian tube dysfunction. As successful treatment cannot be guaranteed with the currently available options, the aim is to develop a stent for the Eustachian tube (ET). Over the course of this development, different prototypes were generated and tested in ex vivo experiments. Four different prototypes of an ET stent and one commercially available coronary stent were implanted in the ET of seven human donor bodies. The position of the stents was verified by cone beam CT. The implanted ETs were harvested, embedded in resin and ground at 200 µm steps.

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Matsuda, Yoshikazu, Joonho Chung, Kiffon Keigher, and Demetrius Lopes. "A comparison between the new Low-profile Visualized Intraluminal Support (LVIS Blue) stent and the Flow Redirection Endoluminal Device (FRED) in bench-top and cadaver studies." Journal of NeuroInterventional Surgery 10, no. 3 (2017): 274–78. http://dx.doi.org/10.1136/neurintsurg-2017-013074.

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ObjectThe aim of this study is to demonstrate the differences between the new Low-profile Visualized Intraluminal Support (LVIS Blue) stenting device and the Flow Redirection Endoluminal Device (FRED) using a series of bench-top evaluations and optical coherence tomography (OCT) images in a cadaveric preparation of the basilar artery.MethodsThe first part of the evaluation was bench-top microscopic documentation of metal coverage for LVIS Blue and FRED stents. OCT images of the cerebral vessels and deployed stents were acquired using OCT intravascular imaging. The stents were deployed from the

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Zahoor Soomro, Zuhaib, Asad Aslam Korejo, Khalid Iqbal Bhatti, Jawaid Akbar Sial, and Gul Hassan Brohi. "Frequency of Acute Stent Thrombosis after Primary Percutaneous Coronary Intervention in Patients with ST-Elevation Myocardial Infarction." Pakistan Journal of Medical and Health Sciences 15, no. 9 (2021): 2550–53. http://dx.doi.org/10.53350/pjmhs211592550.

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Objective: To determine the frequency of acute stent thrombosis after primary percutaneous coronary intervention in patients with ST-elevation myocardial infarction. Study Design: Descriptive cross sectional study. Place and Duration of Study: Department of Cardiology, National Institute of Cardiovascular Disease Hospital, Karachi from 30th 2017 to 31st December 2017. Methodology: One hundred and sixty three patients will undergo primary percutaneous coronary intervention and stent either drug-eluting stents (coated with medication) or bare-metal stent was placed. Patients who developed sudden

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Lin, Tao, Xinye Ni, Liugang Gao, Jianfeng Sui, Kai Xie, and Shuquan Chang. "Evaluation of the Effect of a Tracheal Stent on Radiation Dose Distribution via Micro-CT Imaging." Technology in Cancer Research & Treatment 18 (January 1, 2019): 153303381984448. http://dx.doi.org/10.1177/1533033819844485.

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Purpose: To study the effect of a metal tracheal stent on radiation dose distribution. Method: A metal tube bracket is placed in a self-made foam tube sleeve, and micro-computed tomography scanning is performed directly. The foam sleeve containing the metal bracket is placed in a nonuniform phantom for a routine computed tomography scan. The stents in conventional computed tomography images are replaced by the stents in micro-computed tomography images. Subsequently, 2 sets of computed tomography images are obtained and then imported to a radiotherapy treatment planning system. A single photon

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Ma, Chun Hua. "Biocompatibility of Degradable Stents Constructed Different Biomaterials." Key Engineering Materials 575-576 (September 2013): 287–90. http://dx.doi.org/10.4028/www.scientific.net/kem.575-576.287.

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Placement for the treatment of coronary atherosclerotic heart disease (CHD) underwent four revolutionary simple balloon dilatation era, bare-metal stent era, drug stent era and completely biodegradable stent era. Completely biodegradable stent is Current research focus. A computer based search of EMbase (1980-01/2011-12), MEDLINE(1966-01/2011-12), CBM(1978-01/2011-08), PubMed (1999-01/2011-12) and CNKI (1999-01/2011-12) was performed. The keywords weredegradable,stents,biocompatibilityin Chinese and English. Indicators including endothelialization degree of coronary artery and incidence of in-

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Sukmana, Irza, Arifo Gunawan Chyanegoro, and Agus Sugiri. "Biomedical Material for Stent Application: Current Status and Future Challenges." Journal of Applied Science, Engineering and Technology 1, no. 2 (2021): 60. http://dx.doi.org/10.47355/aset.v1i2.18.

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Cardiovascular disease is the leading cause of death worldwide. Arterial stenting as a transluminal angioplasty procedure allows re-opening of narrowed vessels and restoring normal blood flow with stent placement. The development of stents ed at the end of 19 century with bare-metal stents (BMS). Now, it has been based on the application of biodegradable or natural decomposed and coated stents. The coated stent has been found to improve BMS properties in terms of biocompatibility, cytotoxicity, and better mechanical and biophysical properties. Also, a biodegradable stent may support the blood

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Hachem, Hachem, Sanjay S. Reddy, Jeffrey Tokar, et al. "Impact of biliary metal and plastic stents on preoperative staging for pancreatic cancer." Journal of Clinical Oncology 38, no. 4_suppl (2020): 646. http://dx.doi.org/10.1200/jco.2020.38.4_suppl.646.

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646 Background: Multiple studies have shown the superiority of biliary metal compared with plastic stents for pre-operative (preop) biliary drainage in pancreatic cancer (PDAC). Despite the importance of preop cross-sectional imaging, particularly in the era of neoadjuvant treatment, there is no data on the impact of such stents on the quality of preop cross-sectional imaging. We hypothesis, that biliary metal stents negatively impact the accuracy of preop cross-sectional imaging in pancreatic cancer, with unknown impact for the adequacy of surgical candidacy. Methods: Data of all patients und

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Lau, Yu Shi, Li Kuo Tan, Chow Khuen Chan, Kok Han Chee, and Yih Miin Liew. "Automated segmentation of metal stent and bioresorbable vascular scaffold in intravascular optical coherence tomography images using deep learning architectures." Physics in Medicine & Biology 66, no. 24 (2021): 245026. http://dx.doi.org/10.1088/1361-6560/ac4348.

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Abstract Percutaneous coronary intervention (PCI) with stent placement is a treatment effective for coronary artery diseases. Intravascular optical coherence tomography (OCT) with high resolution is used clinically to visualize stent deployment and restenosis, facilitating PCI operation and for complication inspection. Automated stent struts segmentation in OCT images is necessary as each pullback of OCT images could contain thousands of stent struts. In this paper, a deep learning framework is proposed and demonstrated for the automated segmentation of two major clinical stent types: metal st

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Lee, Jonghyun, Sung Yong Han, Donghoon Baek, Gwang Ha Kim, Geun Am Song, and Dong Uk Kim. "Risk Factors for Early- and Late-Onset Cholecystitis after Y-Configured Metal Stent Placement in Patients with Malignant Hilar Biliary Obstruction: A Single-Center Study." Journal of Clinical Medicine 12, no. 13 (2023): 4354. http://dx.doi.org/10.3390/jcm12134354.

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This study evaluated the prevalence and risk factors of early- (within 7 days of placement) and late-onset (after 7 days of placement) cholecystitis after Y-configured metal stent placement. Between June 2005 and August 2020, 109 patients who had been treated with Y-configured metal stents for malignant hilar obstruction were enrolled in the study. We retrospectively analyzed the potential risk factors for post-stent cholecystitis. The presence of diabetes (p = 0.042), the length of the common part of the Y-stent (p = 0.017), filling of the gallbladder with contrast medium during the procedure

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Ch, Shravan Kumar, Naveen Kumar M., and Sudhakar Kanumuri. "A Case of Very Early Stent Restenosis Following DES Implantation." Indian Journal of Cardiovascular Disease in Women WINCARS 04, no. 04 (2019): 200–203. http://dx.doi.org/10.1055/s-0039-3402812.

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AbstractIntracoronary in-stent restenosis (ISR) is more common with bare metal stents. With the introduction of drug-eluting stents (DESs), the incidence of ISR has markedly decreased. Here, we report a case of unusual very early stent restenosis in a patient who presented with unstable angina 15 days after percutaneous coronary intervention with sirolimus-eluting DES. Optical coherence tomography (OCT) was done to know the pathophysiology of the very early stent stenosis and the possibilities of the rare findings of this OCT are discussed.

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