Results 1 to 10 of about 28,445 (214)

Innovating Patent Ductus Arteriosus Closure: Preclinical Evaluation of the First Iranian-Developed Nitinol Occluder in a Sheep Model [PDF]

Iranian Journal of Medical Sciences
Background: Patent ductus arteriosus (PDA) is a congenital defect characterized by abnormal blood flow between the aorta and pulmonary artery. Existing closure devices, such as the Amplatzer Duct Occluder (ADO), face challenges with affordability ...
Hamid Amoozgar, Hossein Hosseini, Hamid Mohammadi, Behrooz Fereidoonnezhad, Mehdi Eynbeygui, Jamal Arghavani, Afshin Zare, Nima Mehdizadegan, Mohammad Reza Edraki, Amir Naghshzan, Elham Abedi, Mohammadhossein Khorraminejad-Shirazi   +11 more
doaj   +2 more sources

Biomechanical Comparison Between Fixation Techniques for First Metatarsophalangeal Joint Arthrodesis [PDF]

Foot & Ankle Orthopaedics
Research Type: Level 2 - Prospective comparative study, Meta-analysis of Level 2 studies or Level 1 studies with inconsistent results Introduction/Purpose: Hallux Rigidus and Hallux Valgus can cause long-term morbidity and reduce mobility.
Chase Romere MD, Justin Hollenbeck MS, Jason Sidrak BS, Kevin Schafer MD, Thomas Haytmanek MD, Jonathon D. Backus MD   +5 more
doaj   +2 more sources

Effects of nitinol on the ductile performance of ultra high ductility fibre reinforced cementitious composite

Case Studies in Construction Materials, 2021
The effects of nitinol on the ductile performance of fibre reinforced cementitious composites were investigated in this study. Nitinol fibres with two different diameters of 1 mm and 0.5 mm and nitinol powder of diameter 70 nm were used as micro ...
Ayim-Mensah Gideon, Radosavljevic Milan
doaj   +1 more source

Modified Surface Composition and Biocompatibility of Core-Shell Nitinol Nanoparticles Fabricated via Laser Ablation of Differently Passivized Targets

Frontiers in Materials, 2022
Nitinol is a versatile alloy known for its shape memory effect and thus finds multiple applications in biomedical devices and implants. The biomedical applications of nitinol-based devices are, however, limited because of concerns related to leaching and
Ujjwal Ranjan Dahiya, Sonu Singh, Chetan Kumar Garg, Aakansha Rai, Dinesh Kalyanasundaram, Dinesh Kalyanasundaram   +5 more
doaj   +1 more source

Electrolytic Polishing Test and Surface Properties of Nitinol Tube

International Journal of Electrochemical Science, 2021
Nitinol alloy is widely used in biomedicine because of its tensile resistance, fatigue resistance, shape memory effect, and good biocompatibility. This study aims to utilize an electrolytic polishing method to improve the surface condition of nitinol ...
Hua Ji, Yongqi Wang, Zhiyong Li, Zhaoxia Huang, Mingxia Chai   +4 more
doaj   +1 more source

Host–device interactions: exposure of lung epithelial cells and fibroblasts to nickel, titanium, or nitinol affect proliferation, reactive oxygen species production, and cellular signaling

Journal of Materials Science: Materials in Medicine, 2023
Endoscopic implantation of medical devices for the treatment of lung diseases, including airway stents, unidirectional valves and coils, is readily used to treat central airway disease and emphysema.
Simon D. Pouwels, Alina Sigaeva, Shanna de Boer, Ilse A. Eichhorn, Lisanne Koll, Jeroen Kuipers, Romana Schirhagl, Irene H. Heijink, Janette K. Burgess, Dirk-Jan Slebos   +9 more
doaj   +1 more source

Experimental and numerical investigation of the transient thermal characteristics of twisted nitinol wires in a continuous torsional refrigeration system.

PLoS ONE, 2022
Twistocaloric cooling technology is a novel solid elastocaloric refrigeration to be promising alternatives to conventional compression refrigeration. The transient thermal characteristics of the twistocaloric-effect material and its cooling capacity are ...
Haibo Zhao, Kun Wu
doaj   +1 more source

Nitinol stent insertion in tracheomalacia [PDF]

Thorax, 2016
A 69-year-old man was admitted to our hospital with progressive dyspnoea accompanied by inspiratory stridor. He presented a history of surgical aortic valve replacement 3 years previously, complicated by prolonged postoperative mechanical ventilation requiring percutaneous tracheostomy.
Carmen, Pizarro, Darius, Dabir, Georg, Nickenig, Dirk, Skowasch   +3 more
openaire   +2 more sources

Severe symptomatic nickel allergy following stent graft implantation requiring excision and external iliac artery reconstruction

Journal of Vascular Surgery Cases and Innovative Techniques, 2022
Although nickel allergy is a common cause of contact dermatitis, systemic reactions to nitinol stents are rare. A 61-year-old woman had presented with a nonhealing toe wound.
Rhusheet Patel, MD, Wesley Moore, MD, Juan Carlos Jimenez, MD, MBA   +2 more
doaj   +1 more source

NITINOL ENGINE DEVELOPMENT [PDF]

, 1976
The objective of this project is to determine the feasibility of applying the shape-memory effect in certain intermetallic compounds (particularly ''55 Nitinol'') to the conversion of low temperature heat energy to mechanical work by means of solid state heat engines.
Ridgway Banks, Michael Wahlig
openaire   +3 more sources