Results 61 to 70 of about 91,071 (304)

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

Advanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco, Pierfrancesco Gaziano, Serena Anglese, Simone Morganti, Carlo de Vincentiis, Ferdinando Auricchio, Michele Marino, Michele Conti   +7 more
wiley   +1 more source

Parametric modeling of sports prostheses based on the flat spring design formulas

Journal of Biomechanical Science and Engineering, 2019
Sports prosthesis for lower-extremity amputees has a mechanical structure similar to flat springs, and its elastic energy is expected to improve sports performance. However, it is quite challenging to represent the mechanical phenomena during the takeoff
Kazunori HASE, Hiroto TOGAWA, Satoshi KOBAYASHI, Goro OBINATA   +3 more
doaj   +1 more source

Sensitivity Analysis of a Smart 3D-Printed Hand Prosthetic

Journal of Robotics, 2022
In this study, prosthesis performance was examined in the direction of prosthesis comfort, which may be incorporated into clinical practice as considerations for the fabrication of patient-specific prostheses.
Ebenezer Olubunmi Ige, Adedotun Adetunla, Adedamola Awesu, Oluwaseun K. Ajayi   +3 more
doaj   +1 more source

Prediction of Turbulent Shear Stresses through Dysfunctional Bileaflet Mechanical Heart Valves using Computational Fluid Dynamics

, 2018
There are more than 300,000 heart valves implanted annually worldwide with about 50% of them being mechanical valves. The heart valve replacement is often a common treatment for severe valvular disease.
Gamage, Peshala T., Khalili, Fardin, Mansy, Hansen   +2 more
core   +1 more source

Artifact‐Minimizing Ultrathin Transparent Electrodes Fabricated via iCVD for In Vivo Optogenetic Stimulation and Neural Signal Monitoring of Primary Visual Cortex

Advanced Functional Materials, EarlyView.
We present ultrathin flexible transparent electrodes through iCVD‐enabled molecular control of 10 nm gold films on poly(dimethylaminomethylstyrene). In vivo validation demonstrated photoelectric artifact reduction vs. opaque electrodes and preservation of natural neural dynamics.
Tae Jin Mun, Minju Kim, Chaesung Kim, Yunyoung Choi, In‐Yeop Baek, Younghak Cho, Gyeongyong Lee, Yerim Jang, Min‐Ho Nam, Wonryung Lee, Maesoon Im, Hyejeong Seong   +11 more
wiley   +1 more source

Immediate and mid-term results of implanting a MedInzh-2 mechanical prosthesis in the aortic position: ten-year experience of one center

Креативная хирургия и онкология
Introduction. MedInzh-2 is one of Russian mechanical prostheses. Although promising hemodynamic and hydrodynamic characteristics of this prosthesis are reported, only a few studies are available evaluating the implantation of this prosthesis in the ...
S. T. Enginoev, A. A. Ziankou, I. I. Chernov, M. N. Dzhambieva, N. E. Ramazanova, D. Yu. Baev, M. M. Hassan, A. M. Bolurova, V. N. Kolesnikov   +8 more
doaj   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source

Penile prostheses

Therapeutic Advances in Urology, 2010
Penile prosthesis implantation is recognized as a valid option to obtain an artificial erection satisfactory for sexual intercourse in those patients in which a pharmacological approach is contraindicated or ineffective. Penile prostheses are subbject to
Carlo Bettocchi, Fabrizio Palumbo, Marco Spilotros, Silvano Palazzo, Gabriele A. Saracino, Pasquale Martino, Michele Battaglia, Francesco P. Selvaggi, Pasquale Ditonno   +8 more
doaj   +1 more source

A circumferentially flanged tibial tray minimizes bone-tray shear micromotion [PDF]

, 2005
Aseptic loosening of the tibial component is the major complication of total knee arthroplasty. There is an association between early excessive shear micromotion between the bone and the tray of the tibial component and late aseptic loosening.
Barker, D.S., Ryd, L., Tanner, K.E.
core   +1 more source

Self‐Healing and Stretchable Synaptic Transistor

Advanced Functional Materials, EarlyView.
A self‐healing stretchable synaptic transistor (3S‐T) is realized using a p‐PVDF‐HFP‐DBP/PDMS‐MPU‐IU bilayer as gate insulator, where dipole‐dipole interaction enhances polarization to achieve a large memory window. Leveraging its neuronal biomimicry, the synaptic transistor demonstrates electrically compatibility with the biological brain. Furthermore,
Hyongsuk Choo, Sangyong Park, Yoonyi Jeong, Jaepyo Jang, Duhwan Seong, In Soo Kim, Myung‐Gil Kim, Mikyung Shin, Minah Suh, Donghee Son, Jin‐Hong Park   +10 more
wiley   +1 more source