Results 71 to 80 of about 107,940 (326)

The choosing of optimal cell parameters of transcatheter aortic valve prosthesis [PDF]

Компьютерные исследования и моделирование, 2014
This paper presents the analysis of dependences between frame basic cell geometry parameters and function via finite element analysis. The simplified models of frame cell with varied strut width, thickness and quantity in a circle was researched to ...
Evgeny Andreevich Ovcharenko, Kirill Urievitch Klyshnikov, Gennady Victorovich Savrasov, Dmitry Vladimirovich Nyshtaev, Tatiana Vladimirovna Glushkova   +4 more
doaj   +1 more source

Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials

Advanced Robotics Research, EarlyView.
Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira, Liao Wu, Ming Li, Priyank Kumar, Xiaopeng Li, Shi‐Yang Tang   +5 more
wiley   +1 more source

Remoção cirúrgica de trombos em próteses valvulares mecânicas Surgical removal of thrombi in mechanical valvular prostheses

Brazilian Journal of Cardiovascular Surgery, 1993
É relatada a retirada cirúrgica de trombos em próteses mecânicas em dois pacientes, manobra rara e inédita em nossa Instituição. O primeiro paciente, do sexo masculino, de 19 anos de idade, com história de doença reumática na infância, tendo sido ...
Pablo M. A Pomerantzeff, Wilson Luiz da Silveira, Jorge Y Afiuni, Nana Ikari, Raquel Snitkowsky, Max Grinberg, Munir Ebaid, Miguel Barbero-Marcial, Geraldo Verginelli, A. D Jatene   +9 more
doaj  

Toward Wireless Implantable Robotic Systems Driven by Magnetic Field for Personalized Therapy

Advanced Robotics Research, EarlyView.
Robotic materials are playing an increasingly vital role in enabling sensing and actuation at small scales. This perspective highlights recent advances in magnetic materials and magnetically actuated devices for wireless sensing, actuation, and energy harvesting toward implantable robotic systems for closed‐loop therapy.
Yusheng Wang, Ruijian Ge, Xiaoguang Dong
wiley   +1 more source

Reconstituição da valva pulmonar e via de saída do ventrículo direito, com prótese bivalvular e prótese tubular valvada de tronco pulmonar de porco: estudo experimental e aplicação clínica Pulmonary valve and right ventricular oulet tract reconstruction with biovalvular prostheses and valved tubular prostheses of the pig pulmonary artery: experimental study and clinical application

Brazilian Journal of Cardiovascular Surgery, 1993
A obstrução da via de saída do ventrículo direito (VSVD) tem gerado muita polêmica em torno da técnica da sua correção cirúrgica, sendo a reconstituição ainda motivo de controvérsias.
Miguel A Maluf, José L Verde, João Carlos Leal, Roberto Catani, Herminio Vega Garcia Jr, Rubens Thevenard, Antonio C Carvalho, José L Andrade, José Carlos S Andrade, Domingo M Braile, Luiz Eduardo V Leão, Ênio Buffolo   +11 more
doaj  

Toward Autonomous Self‐Healing in Soft Robotics: A Review and Perspective for Future Research

Advanced Intelligent Systems, EarlyView.
In this article, five different phases (damage detection, cleaning, damage closure, material healing, and healing assessment) are investigated to have an autonomous self‐healing at the system level with the focus on soft robotics. It delves into the importance of each phase, why and where they matter, and reviews relevant technologies that enable ...
Seyedreza Kashef Tabrizian, Seppe Terryn, Bram Vanderborght   +2 more
wiley   +1 more source

Retroca valvular Replacement of heart valves prostheses

Brazilian Journal of Cardiovascular Surgery, 1987
A reoperação de próteses valvulares tem sido realizada, com freqüência cada vez maior, nos vários Serviços de cirurgia cardíaca. Os detalhes do tratamento, a indicação e a técnica operatória melhoraram os resultados. No período de janeiro de 1984 a junho
Pablo M. A Pomerantzeff, Mário César S. de Abreu, Marisa Amato, Miguel Moretti, José Otávio C Auler Júnior, Max Grinberg, Flávio Tarasoutchi, Alfredo Mansur, Altamiro Ribeiro Dias, Delmont Bittencourt, Noedir A. G Stolf, Geraldo Verginelli, Adib D Jatene   +12 more
doaj  

Smart Transfemoral Prosthetic Socket with Motorized Cable‐Driven System

Advanced Intelligent Systems, EarlyView.
This study presents an innovative transfemoral socket featuring a motorized cable‐driven system and a sensorized liner, designed to adapt to changes in residual limb volume while monitoring interface pressures. Users can seamlessly control the socket in both open‐ and closed‐loop modes via a customized mobile application, enhancing comfort and ...
Linda Paternò, Ahmed Zohaib Zaidi, Maria Grazia Polizzotto, Sofia Dalmiani, Djoeke Helsloot, Sybren Heikens, Emanuele Gruppioni, Arianna Menciassi   +7 more
wiley   +1 more source

Prosthetic Aortic Heart Valves

, 2017
In this review, the anatomy and structure of the aortic valve and its prostheses are comprehensively discussed. Cardiac anatomy and function, human heart valves and their prostheses are also extensively discussed.
H. Mohammadi, G. Fradet
semanticscholar   +1 more source

Nanopatterned acellular valve conduits drive the commitment of blood-derived multipotent cells [PDF]

, 2016
Considerable progress has been made in recent years toward elucidating the correlation among nanoscale topography, mechanical properties, and biological behavior of cardiac valve substitutes.
Aguiari, Paola, Barbon, Silvia, Bertalot, Thomas, Conconi, MARIA TERESA, DI LIDDO, Rosa, Gandaglia, Alessandro, Gerosa, Gino, Iop, Laura, Mandoli, Amit, Parnigotto, PIER PAOLO, Schrenk, Sandra, Tasso, Alessia   +11 more
core   +2 more sources