Results 81 to 90 of about 3,753,947 (257)

A Constraint‐Based Analytical Framework for Design‐Space Analysis and Material Screening of Tubular Multilayer Dielectric Elastomer Pumps for Extracorporeal Circulatory Applications

Advanced Materials Technologies, EarlyView.
A constraint‐based analytical framework maps the coupled effects of material properties, structural parameters, and operating conditions in tubular dielectric elastomer pumps for extracorporeal circulatory applications. The approach defines performance boundaries through mechanical, electrical, and hydraulic constraints and identifies feasible design ...
Yan Zhang, Amine Benouhiba, Yoan Civet, Yves Perriard   +3 more
wiley   +1 more source

A fully coupled fluid-structure interaction model for patient-specific analysis of bioprosthetic aortic valve haemodynamics

Frontiers in Bioengineering and Biotechnology
BackgroundBioprosthetic aortic valves (BPAV) have been increasingly used for surgical aortic valve replacement (SAVR), but long-term complications associated with structural valve deterioration remain a concern.
Zhongjie Yin, Chlöe Armour, Chlöe Armour, Selene Pirola, Selene Pirola, Harkamaljot Kandail, Xiaoxin Kan, Xiaoxin Kan, Pankaj Garg, Pankaj Garg, Rui Li, Rui Li, Toufan Bahrami, Toufan Bahrami, Saeed Mirsadraee, Saeed Mirsadraee, Xiao Yun Xu   +16 more
doaj   +1 more source

Structural Valve Deterioration with the Mitroflow Bioprosthesis

, 2023
Hintergrund: Sowohl die Aortenklappenstenose als auch die Aortenklappeninsuffizienz stellen bei hochgradiger Ausprägung zumeist die Indikation die Aortenklappe durch eine Prothese zu ersetzen.
Huber, Johannes
core  

Biodegradable and Edible Milli‐Fluidic Logic Circuits

Advanced Materials Technologies, EarlyView.
Fully biodegradable and edible fluidic circuits are developed using gelatin‐based valves that operate at low pressure. Logic gates, a one‐bit memory, and a ring oscillator are demonstrated, showing that biodegradable materials can perform computation and control.
Shuhang Zhang, Bokeon Kwak, Özgün Ekrem, Dario Floreano   +3 more
wiley   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Non-linear finite element analyses of the aortic heart valve [PDF]

, 2004
Includes bibliographical references.Finite element models of the aortic heart valve have been successfully used in the past to gain insight into the mechanics of the valve and to aid in understanding of valve failure.
Koch, Thorsten M
core   +1 more source

Durability of Soft Pneumatic Actuators: A Review and Benchmarking Protocol

Advanced Robotics Research, EarlyView.
Lack of durability is a key challenge hindering the broad scale adoption of soft pneumatic actuators (SPAs) in automation industries. This review provides a comprehensive overview of existing research on SPA durability, introduces a standardized durability benchmarking protocol to consolidate the testing of SPAs, and outlines promising directions for ...
Dickson Chiu Yu Wong, Yucheng Luo, Rob Bernardus Nicolaas Scharff   +2 more
wiley   +1 more source

Freestyle Bioprosthetic Valves: Clinical Outcomes, Surgical Techniques, and Future Directions

Albanian Journal of Trauma and Emergency Surgery
Introduction: The Freestyle® stentless porcine aortic root (Medtronic, Minneapolis, MN) has emerged as a valuable option for aortic valve replacement (AVR), offering superior hemodynamics compared to stented bioprostheses and eliminating the need for ...
Ermal Likaj, Alessia Mehmeti, Jacob Zeitani, Selman Dumani, Fjorba Mana, Aferdita Veseli, Esmerilda Bulku, Altin Veshti   +7 more
doaj   +1 more source

Actuarial versus actual risk of porcine structural valve deterioration [PDF]

The Journal of Thoracic and Cardiovascular Surgery, 1994
Actuarial analysis, using nonparametric (e.g., life table or Kaplan-Meier) or parametric (statistical modeling) methods, is used to describe and compare survival probabilities by allowing for partial survival times (censoring). Although devised to describe freedom from death, this method has been extended to nonfatal complications, such as freedom from
G L, Grunkemeier, W R, Jamieson, D C, Miller, A, Starr   +3 more
openaire   +2 more sources

Modular, Textile‐Based Soft Robotic Grippers for Agricultural Produce Handling

Advanced Robotics Research, EarlyView.
This article introduces textile‐based pneumatic grippers that transform simple textiles into robust bending actuators. Detailed experiments uncover how cut geometry and fabric selection shape performance. Successful handling of fragile agricultural items showcases the potential of textile robotics for safe, scalable automation in food processing and ...
Zeyu Hou, Eran Beeri Bamani, Joao Buzzatto, Bryan Busby, Lucas Ferrari Gerez   +4 more
wiley   +1 more source