Results 21 to 30 of about 334 (147)
Equivalent Circuit Modeling for a Valveless Piezoelectric Pump [PDF]
Sensors, 2018 Various kinds of the models had been proposed to explain the relationship between the performance and the structural parameters of valveless piezoelectric pumps, so as to evaluate the functional performance such devices. Among the models, the equivalent circuit model, which converts the multi-field problem of a valveless piezoelectric pump system into ...
Jianhui Zhang, Yuan Wang, Jun Huang 0004
openaire +4 more sources
Research on Valveless Piezoelectric Pump Based on Coriolis Effect. [PDF]
Micromachines (Basel)In previous studies, a valveless piezoelectric pump with arc-shaped tubes (VPPAST) based on the Coriolis Effect was proposed. To promote the application of VPPAST in the field of navigation and guidance, it is vital to further explore the influences of the layout and structural parameters of arc-shaped tubes on the flow rate. Accordingly, in this study,
Yan Q, Liu Z, Sun W, Jiang M.
europepmc +4 more sources
An experimental investigation and a simple model of a valveless pump [PDF]
Physics of Fluids, 2008 We construct a valveless pump consisting of a section of elastic tube and a section of rigid tube connected in a closed loop and filled with water. By periodically squeezing the elastic tube at an asymmetric location, a persistent flow around the tubes is created.
Bringley, Thomas +3 more
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Scientific Reports, 2022 Successful therapy of heart failure with preserved ejection fraction (HFpEF) remains a major unmet clinical need. Device-based treatment approaches include the interatrial shunt device (IASD), conventional assist devices pumping blood from the left ...
Marcus Granegger +7 more
doaj +1 more source
Anatomical compatibility of a novel total artificial heart: An in-silico study. [PDF]
Artif OrgansWe optimized the outflow cannulation of the previously established novel total artificial heart—the ShuttlePump and evaluated its anatomical compatibility in adult heart failure patients using virtual implantation techniques. Successful implantation was achieved in 9/11 patients, and identified anatomical predictors showed a strong correlation.
Narayanaswamy K +6 more
europepmc +2 more sources
Behavior of a viscoelastic valveless pump: a simple theory with experimental validation
BioMedical Engineering OnLine, 2010 Background A valveless pump generates a unidirectional net flow of fluid around a closed loop of soft viscoelastic tubing that is rhythmically compressed at one point. The tubing must have at least two sections with two different stiffnesses.
Babbs Charles F
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Impedance Pumping and Resonance in a Multi-Vessel System
Bioengineering, 2018 Impedance pumping is a mechanism that generates flow in a compliant vessel by repeatedly actuating the vessel asymmetrically, without employing any internal valves, blades, or other mechanisms. The net flow is obtained by establishing a constructive wave
Victor Zislin, Moshe Rosenfeld
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An Integrated Pumping and Mixing Device
Journal of Fluid Science and Technology, 2011 The present work numerically characterizes a microfluidic device with pumping and mixing functions for lab-on-a- chip applications. The planar fluidic network of the device consists of two inlet channels, a pump chamber, a neck channel, and an outlet ...
Thien X. DINH, Yoshifumi OGAMI
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DESIGN AND OPTIMIZATION OF VALVELESS MICROPUMPS BY USING GENETIC ALGORITHMS APPROACH [PDF]
Journal of Engineering Science and Technology, 2015 This paper presents a design optimization of valveless micropump using Genetic Algorithms (GA). The micropump is designed with a diaphragm, pumping chamber and diffuser/nozzle element functions as inlet and outlet of micropump with outer dimension of (5 ...
AIDA F. M. SHUKUR +3 more
doaj
Advanced Intelligent Systems, EarlyView.A unifying device–cardiovascular interface framework is presented to classify implantable cardiovascular technologies as intracardiovascular blood‐contacting systems or extracardiovascular tissue‐only and blood‐handling architectures. Cross‐class comparison across shared semiquantitative criteria, including blood‐contact burden, biomimicry ...
Bergo Nicolò +7 more
wiley +1 more source