Results 71 to 80 of about 19,295 (229)

Residual Shunt at 6 Months Follow‐up After Percutaneous Patent Foramen Ovale Closure in CAHAL: A Comparison of Occlutech and Amplatzer

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Residual shunt is a known complication in percutaneous patent foramen ovale (PFO) closure, and moderate to large residual shunt has been associated with an increased risk of recurrent stroke. Device‐related factors, such as device size, have been associated with residual shunt, but comparative data per device type are scarce.
Jelle D. Nieuwendijk, Abdelhak el Bouziani, Lars S. Witte, Danielle Robbers‐Visser, Berto J. Bouma, Bart Straver, Ibtihal al Amri, Jonathan M. Coutinho, Ronak Delewi, Robbert J. de Winter, Marcel A. M. Beijk, Frank van der Kley, Maik J. Grundeken   +12 more
wiley   +1 more source

Artificial muscle: facts and fiction

Swiss Medical Weekly, 2011
Mechanical devices are sought to support insufficient or paralysed striated muscles including the failing heart. Nickel-titanium alloys (nitinol) present the following two properties: (i) super-elasticity, and (ii) the potential to assume different
MC Schaub
doaj   +1 more source

Engineering an artificial trachea: Quantitative benchmarks and modular strategies for mechanics, epithelialization, and vascular integration

FlexMat, EarlyView.
In this work, we first examine the limitations of surgical repair and stenting, including migration, granulation, mucus plugging, and infection. We then translate these failures into engineering constraints involving geometry, mechanics, fixation, degradation, junctional stress, and remodeling.
Yiwei Xu, Hanqing Dai, Qianwang Ye, Wanlu Zhang, Na Wang, Lei Xiong, Ruiqian Guo   +6 more
wiley   +1 more source

Histological evaluation of a cochlear implant electrode array with electrically activated shape change for perimodiolar positioning

Current Directions in Biomedical Engineering, 2018
For the treatment of deafness or severe hearing loss cochlear implants (CI) are used to stimulate the auditory nerve of the inner ear. In order to produce an electrode array which is both atraumatic and reaches a perimodiolar final position a design ...
Rau Thomas S., Suzaly N.úha, Pawsey Nick, Hügl Silke, Majdani Lenarz, Majdani Omid   +5 more
doaj   +1 more source

New and Emerging Artificial Urinary Sphincters for Male Stress Urinary Incontinence: From Gold Standard to Next Generation

Neurourology and Urodynamics, EarlyView.
ABSTRACT Introduction For more than four decades, the AMS‐800 has remained the clinical benchmark device for the treatment of male stress urinary incontinence (SUI). Although it remains the gold standard for male SUI, the AMS‐800 has continued to have limitations such as suboptimal post‐operative continence rates, fixed hydraulic pressure, need for ...
Erin C. Schnell, Connie N. Wang, Eric S. Rovner   +2 more
wiley   +1 more source

Motion Planning for Elastic, Non-Controlled, Hyper-Redundant Serial Mechanism

IEEE Access, 2020
This paper introduces the kinematics and two motion planning schemes for a planar, hyper-elastic leaf-spring that is fully supported at the proximal end.
Oded Medina
doaj   +1 more source

Preclinical Efficacy and Safety Evaluation of a Novel Controlled‐Expansion ePTFE‐Covered TIPS Stent in a Swine Model

Portal Hypertension &Cirrhosis, EarlyView.
This preclinical study evaluated a novel controlled‐expansion expanded polytetrafluoroethylene (ePTFE)‐covered transjugular intrahepatic portosystemic shunt (TIPS) stent in 11 swine, demonstrating 100% technical success, excellent deployability, and durable 6‐month angiographic patency without thrombosis, migration, fracture, or device‐related toxicity.
Yi Xiang, Qi Zhang, Chuan Liu, Jiawei Zhang, Qingqiao Zhang, Changsheng Shi, Chunze Zhou, Yudong Zhang, Hongliang He, Hao Xie, Hui Shi, Haijian Guo, Wenjing Liu, Muqing Lin, Huajie Yu, Xiaolong Qi   +15 more
wiley   +1 more source

Beyond Dexterity: Navigating the Trade‐Offs of Steerable Catheter‐ and Guidewire‐Based Endovascular Robotics for Clinical Applications

SmartBot, EarlyView.
Steerable catheters and guidewires enable precise navigation and intervention in complex vascular anatomies. This review systematically examines their steering mechanisms, including morphological, transmission‐based, and transduction‐based actuation, highlighting their underlying principles and engineering characteristics.
Xunzhi Xie, Yumo Wang, Yihao Zheng, Yang Liu   +3 more
wiley   +1 more source

Development of a measurement setup to determine the frictional properties of tissuemimicking materials for vascular models

Current Directions in Biomedical Engineering
In this study, a measurement setup was developed to determine the frictional properties between tissue-mimicking and implant materials. Nitinol and Polytetrafluoroethylene (PTFE) were selected as implant materials, while Polyvinyl alcohol (PVA) hydrogel ...
Karcher Alisa, Schäfer Jenny, Cattaneo Giorgio, Sanchez Daniela   +3 more
doaj   +1 more source

Proliferative vitreoretinopathy: An integrative, multi‐pathway perspective on pathogenesis and therapy

Acta Ophthalmologica, EarlyView.
Abstract Proliferative vitreoretinopathy (PVR) remains the principal biological cause of failed retinal detachment repair. Classical pathogenic models centred on retinal pigment epithelium (RPE) dispersion, retinal injury responses or compartment‐restricted mechanisms do not fully explain the heterogeneity, biomechanical behaviour and clinical ...
Koen A. van Overdam, J. Sebag
wiley   +1 more source