Results 41 to 50 of about 37,649 (295)

SEMS vs cSEMS in duodenal and small bowel obstruction : high risk of migration in the covered stent group [PDF]

, 2013
Aim: To compare clinical success and complications of uncovered self-expanding metal stents (SEMS) vs covered SEMS (cSEMS) in obstruction of the small bowel.
Albert, Jörg Gerhard, Bechstein, Wolf Otto, Friedrich-Rust, Mireen, Sarrazin, Christoph, Trojan, Jörg, Ulrich, Frank, Waidmann, Oliver, Zeuzem, Stefan   +7 more
core   +1 more source

Design, Modeling, Additive Manufacturing, and Polishing of Stiffness-Modulated Porous Nitinol Bone Fixation Plates Followed by Thermomechanical and Composition Analysis

Metals, 2020
The use of titanium bone fixation plates is considered the standard of care for skeletal reconstructive surgery. Highly stiff titanium bone fixation plates provide immobilization immediately after the surgery.
Ahmadreza Jahadakbar, M. Nematollahi, K. Safaei, P. Bayati, G. Giri, Hediyeh Dabbaghi, D. Dean, M. Elahinia   +7 more
semanticscholar   +1 more source

PAN-Based Carbon Fibers Deposition on NiTi Surface [PDF]

Archives of Metallurgy and Materials, 2023
The main objective of the work was to create a layer of carbon nanofibre on the surface of the NiTi shape memory alloy. The coating process was carried out in three stages. First, polyacrylonitrile was deposited by electrospinning. Then it was stabilized
T. Goryczka, B. Szaraniec, E. Stodolak-Zych, S. Kluska   +3 more
doaj   +1 more source

Low-cost prototyping of nitinol wires/frames using polymeric cores and sacrificial fixtures with application in individualized frames anchoring through the atrial septum

Scientific Reports, 2023
Self-expanding frames for minimally invasive implants are typically made from nitinol wires and are heat treated to maintain the desired shapes. In the process of heat treatment, nitinol structures are placed in a high-temperature oven, while they are ...
Hemanta Dulal, Trey Swan, Subhi J. Al’Aref, Seyedhamidreza Alaie   +3 more
doaj   +1 more source

Observations and models for needle-tissue interactions [PDF]

, 2009
The asymmetry of a bevel-tip needle results in the needle naturally bending when it is inserted into soft tissue. In this study we present a mechanics-based model that calculates the deflection of the needle embedded in an elastic medium.
Misra, Sarthak, Okamura, Allison M., Ramesh, K.T., Reed, Kyle B., Schafer, Benjamin W.   +4 more
core   +5 more sources

Multi-Response Optimization of WEDM Process Parameters for Machining of Superelastic Nitinol Shape-Memory Alloy Using a Heat-Transfer Search Algorithm

Materials, 2019
Nitinol, a shape-memory alloy (SMA), is gaining popularity for use in various applications. Machining of these SMAs poses a challenge during conventional machining.
R. Chaudhari, J. Vora, S. S. Mani Prabu, I. Palani, Vivek K. Patel, D. M. Parikh, L. D. de Lacalle   +6 more
semanticscholar   +1 more source

Atomic Layer Deposition of aTiO2 Layer on Nitinol and Its Corrosion Resistance in a Simulated Body Fluid

Metals, 2021
Nitinol is a group of nearly equiatomic alloys composed of nickel and titanium, which was developed in the 1970s. Its properties, such as superelasticity and Shape Memory Effect, have enabled its use, especially for biomedical purposes.
R. Rudolf, A. Stambolić, A. Kocijan
semanticscholar   +1 more source

Cerebral aneurysm treatment: modern neurovascular techniques. [PDF]

, 2016
Endovascular treatment of cerebral aneurysm continues to evolve with the development of new technologies. This review provides an overview of the recent major innovations in the neurointerventional space in recent ...
Colby, Geoffrey P, Coon, Alexander L, Jiang, Bowen, Lin, Li-Mei, Paff, Michelle   +4 more
core   +2 more sources

Functional architected Al–NiTi interpenetrating phase composites with primitive aluminum cores fabricated using spark plasma sintering

Journal of Materials Research and Technology
Interpenetrating phase composites (IPCs) are composite materials characterized by co-continuous and interlocked matrix and reinforcing phases. This distinctive combination often leads to superior performance compared to conventional composite assemblies.
Fares Alawwa, Rashid K. Abu Al-Rub, Bashar El-Khasawneh, Wael Zaki   +3 more
doaj   +1 more source

Porous Coatings by Vapor Sublimation and Deposition for Molecular Channeling and Filtration in an Interstitial Fluid Microfiltration Device

Advanced Healthcare Materials, EarlyView.
A vapor‐based porous coating applied within nitinol tubes demonstrated complete suppression of cellular and tissue ingrowth, overcoming a major limitation of implantable interstitial fluid collection devices. Molecular channeling and diffusion are analyzed with probe molecules, showing reliable transport in vitro and in vivo. The coating also achieved >
Yu‐Ming Chang, Chi‐Yu Huang, Yi‐Jia Ke, Yi‐Wei Lin, Yen‐Hui Chan, Ying‐Chang Lu, Yu‐Chih Chiang, Chen‐Chi Wu, Hsien‐Yeh Chen   +8 more
wiley   +1 more source