Results 21 to 30 of about 2,111 (208)

The BONEBRIDGE active transcutaneous bone conduction implant: effects of location, lifts and screws on sound transmission

Journal of Otolaryngology - Head and Neck Surgery, 2020
Background The BONEBRIDGE (MED-EL, Innsbruck, Austria) is a bone-conduction implant used in the treatment of conductive and mixed hearing loss. The BONEBRIDGE consists of an external audio processor and a bone-conduction floating mass transducer that is ...
Seyed Alireza Rohani, Mandolin Li Bartling, Hanif M. Ladak, Sumit K. Agrawal   +3 more
doaj   +1 more source

Biomechanical evaluation of peak reverse torque (PRT) in a dynamic compression plate-screw construct used in a goat tibia segmental defect model

BMC Veterinary Research, 2019
Background Peak reverse torque (PRT) is a valid method to evaluate implants’ secondary stability in the healing bone. The secondary stability is achieved by the implant over time and it has been positively correlated with the implants’ osseointegration ...
Remigiusz M. Grzeskowiak, Carrie Wheeler, Elizabeth Taylor, James Lillich, James Roush, Alexandru S. Biris, David E. Anderson   +6 more
doaj   +1 more source

Clinical analysis of internal fixation femoral neck fractures with two or three cannulated screws [PDF]

Srpski Arhiv za Celokupno Lekarstvo, 2021
Introduction/Objective. Angular stability and dynamic fixation are key factors to successful healing of femoral neck fractures. The objective was to evaluate the efficacy of internal fixation of femoral neck fractures with two parallel self-tapping ...
Kostić Igor M., Mitković Milan M., Milenković Saša S., Mitković Milorad B.   +3 more
doaj   +1 more source

Avaliação biomecânica da influência do macheamento e do desenho dos parafusos cervicais Biomechanical evaluation of the influence of cervical screws tapping and design

Revista Brasileira de Ortopedia, 2009
OBJETIVO: Avaliar a influência do desenho do parafuso (autoperfurante e automacheante) e do macheamento do orifício-piloto sobre o torque de inserção e a força de arrancamento dos parafusos utilizados para a fixação anterior da coluna cervical.
Patrícia Silva, Rodrigo César. Rosa, Antonio Carlos Shimano, Francisco José Albuquerque de Paula, José Batista Volpon, Helton Luiz Aparecido Defino   +5 more
doaj   +1 more source

Initial engagement and axial force model for self-tapping bone screws

Current Directions in Biomedical Engineering, 2022
Correctly torquing bone screws is important for implant fixation longevity and strength. A model-based smart screwdriver has been proposed to regulate torque, however current models ignore axial force and the initial engagement of the screw.
Wilkie Jack, Rauter Georg, Möller Knut
doaj   +1 more source

Experimental and Numerical Study on Shear Properties of Timber-to-timber Joint Using a Dowel Reinforced with a Self-tapping Screw

BioResources, 2023
Herein, a beech wood dowel reinforced with a self-tapping screw (composite dowel in brief) is proposed. Composite dowels were welded into the predrilled holes by high speed rotation.
Jie Shen, Xudong Zhu, Jianbing Chen
doaj   +2 more sources

An Analytical Model for Predicting the Axial Stress Distribution of Self-Tapping Screws Due to Axial Load and Moisture Swelling of Mass Timber Products

Buildings
Self-tapping screws are becoming increasingly popular for use in modern timber structures. The axial stress distribution of self-tapping screws due to a mechanical load has been previously studied.
Mehsam Tanzim Khan, Sara Keypoursangsari, Chun Ni, Ying Hei Chui, Zengtao Chen   +4 more
doaj   +1 more source

Explant of a Chronic Atlantoaxial Implant Infection in a Dog

Case Reports in Veterinary Medicine, 2023
An 11-year-old male neutered Yorkshire Terrier was presented with a cervical mass that developed a draining tract. Aside from the dysphagia reported by the owner, his neurologic exam was normal.
Thao Vo, Gabriel Garcia, Sheila Carrera-Justiz   +2 more
doaj   +1 more source

Unveiling α‐MoO3 as a High‐Index, Low‐Loss Anisotropic Material: Bridging the Gap From Mid‐Infrared to Ultraviolet Nanophotonics

Advanced Materials, EarlyView.
α‐MoO3 is established as a high‐index, low‐loss anisotropic platform bridging mid‐infrared polaritonics and ultraviolet‐visible nanophotonics. Spectroscopic ellipsometry and calculations reveal refractive indices exceeding 3.9, with the largest in‐plane birefringence among transparent layered crystals at 425–500 nm, enabling zero‐order UV waveplates ...
Adilet N. Toksumakov, Dmitriy V. Grudinin, Georgy A. Ermolaev, Alexey P. Tsapenko, Anton A. Minnekhanov, Konstantin V. Kravtsov, Nikolay V. Pak, Arslan B. Mazitov, Andrey A. Vyshnevyy, Aleksandr S. Slavich, Ivan A. Kruglov, Gleb I. Tselikov, Aleksey V. Arsenin, Kostya S. Novoselov, Valentyn S. Volkov   +14 more
wiley   +1 more source

Direct Growth of 2D Bilayers on Au(111) for Low‐Coercive Sliding Ferroelectricity

Advanced Materials, EarlyView.
Controlled CVD growth of stacking‐defined bilayer ReS2 on Au(111) enables parallel‐stacked bilayers with intrinsic sliding ferroelectricity, a strong piezoelectric response, and an ultralow coercive voltage. Atomic‐resolution imaging and in situ measurements further reveal the decisive role of clean interfaces in achieving low‐barrier ferroelectric ...
Honglin Chen, Ke Yang, Yuhuan Li, Lingli Huang, Tianren Chen, Ming Yang, Jiong Zhao, Thuc Hue Ly   +7 more
wiley   +1 more source