Three different internal airway stents were studied in an animal model of tracheomalacia: the Palmaz stent (Johnson & Johnson, Warren, New Jersey) and the NIR stent (Medinol Ltd., Tel Aviv, Israel)--both made of stainless steel in the form of tubular mesh--and the Nitinol stent, made of nickel-titanium formed into a spiral shape. All three stents could be adequately stabilized in the malacic tracheal segment. The Nitinol stent (Medinol Ltd., Tel Aviv, Israel) proved to be less reactive to the tracheal mucosa, demonstrated higher biocompatibility with significantly less granulation tissue formation, and showed superior radial resistance. Extraction of the Nitinol stent also proved to be much smoother. This stent may be the stent of choice in the treatment of tracheo- and bronchomalacia.
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http://dx.doi.org/10.1089/lap.2005.15.333 | DOI Listing |
Ann Vasc Surg
January 2025
Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Yale School of Medicine, New Haven, CT, USA.
Objectives: Prediction of in-stent restenosis (ISR) is clinically important for patients with peripheral artery disease in their superficial femoral arteries (SFA) who have been treated with stenting. The aim of this study was to construct and validate a predictive model for ISR after SFA stenting based on a series of clinical and ultrasonic parameters.
Methods: This retrospective study included 381 patients who were treated with self-expanding bare nitinol stents in their SFA at our hospital between January 1, 2018, and January 1, 2022.
Transpl Int
January 2025
Service d'Urologie et de Transplantation, Hospices Civils de Lyon, Lyon, France.
The increasing age of patients with end-stage renal disease raises the issue of hostile arterial access for transplantation, with technical difficulties associated with clamping and suturing the iliac artery. Some of these patients - who theoretically represent those who would benefit the most from transplantation in terms of mortality - are contraindicated because of anatomical and medical issues. In this context, a specific endovascular device called EndoPreKiT (Endovascular Preparation for Kidney Transplantation) has been designed, enabling arterial access for transplantation via a mini-invasive procedure.
View Article and Find Full Text PDFInterv Neuroradiol
January 2025
Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Introduction: The Flow Re-direction Endoluminal Device (FRED) is a novel flow diverter with a unique double stent design, with an inner stent composed of 48 nitinol wires, and an outer stent with 16 nitinol wires. It is designed for endovascular cerebral aneurysm treatment, although, limited data exist regarding in-stent stenosis (ISS) rates associated with FRED devices.
Methods: A registry encompassing two North American comprehensive stroke centers was the base of this study.
Catheter Cardiovasc Interv
January 2025
Department of Cardiology, Rakuwakai Otowa Hospital, Kyoto, Japan.
Background: Supera interwoven nitinol stents (IWNS) and Eluvia fluoropolymer-based drug-eluting stents (DES) were designed to improve the patency of the femoropopliteal (FP) artery; however, which type of stent yields superior outcomes in calcified FP lesions remains unclear.
Aims: To compare the safety and efficacy of Supera IWNS and Eluvia DES in severely calcified FP lesions.
Methods: This study retrospectively analyzed 257 consecutive patients who underwent endovascular therapy using either IWNS (n = 123) or DES (n = 134) for FP lesions with peripheral arterial calcium scoring system (PACSS) grade 3 or 4 severe calcification between April 2018 and December 2021 at eight cardiovascular centers in Japan.
J Int Med Res
January 2025
Department of Surgery, Chonnam National University Hospital, Gwangju, Republic of Korea.
The popliteal artery segment is particularly challenging for endovascular treatment. Stents used for treating popliteal artery lesions are usually associated with an increased risk of stent fracture and re-occlusion. The Supera stent is designed to withstand mechanical stress, with a low risk of fracture.
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