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Qiang Wang, Fernando Jaramillo, Yasushi Kato, Leonard Pinchuk, and Richard T. Schoephoerster; J. Med. Devices 3, 011002, 2009.
Implantation methods for commercially available heart valve prostheses require open-chest access to the heart to perform the suturing process. In order to alleviate this complicated surgical implant technique, a “stent-valve” design was developed that will provide a less cumbersome implantation method and therefore a less invasive access to the heart...
Other Products Cited: Heart Valve Testing
Visit SourceArash Kheradvar and Morteza Gharib; Annals of Biomedical Engineering: 37, Issue 1; 2009.
In the field of cardiology, the current ability to accurately detect diastolic dysfunction is unsatisfactory due to the lack of an effective diagnostic index. Isolated indexes obtained from echocardiography are all restricted to a certain aspect of ventricular diastolic function only, and individually cannot be regarded...
Other Products Cited: Heart Valve Testing SuperPump
Visit SourceAli N. Azadani, PhD, Nicolas Jaussaud, MD, Peter B. Matthews, BS, Liang Ge, PhD, T. Sloane Guy, MD, Timothy A.M. Chuter, MD, Elaine E. Tseng, MD.; Ann Thorac Surg 2009;88:1857-1863, Aug 11, 2009.
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceTravis BR, Fowler BL, Robicsek F.; J Heart Valve Dis. (5):499-506; Sep 18, 2009.
Other Products Cited: Heart Valve Testing Pulsatile Flow Simulation Pulse Duplicator
Visit SourceThomas E. Claiborne, Danny Bluestein, Richard T. Schoephoerster, The International Journal of Artificial Organs, Vol. 32, no. 5, pp. 262-271; 2009.
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceJeffrey J. Heys, Nicole Holyoak, Anna M. Calleja, Marek Belohlavek and Hari P. Chaliki, The Open Biomedical Engineering Journal 4, 123-128; 2010.
The assessment of the severity of aortic valve stenosis is done by either invasive catheterization or non-invasive Doppler Echocardiography in conjunction with the simplified Bernoulli equation. The catheter measurement is generally considered more accurate, but the procedure is also more likely to have dangerous complications.
Other Products Cited: Pulse Duplicator Ultrasound Measurements
Visit SourceMathias Vermeulen, Cedric Van Holsbeke, Tom Claessens, Jan W. De Backer, Peter Van Ransbeeck, Pascal Verdonck, 15th Int Symp on Applications of Laser Techniques to Fluid Mechanics Lisbon, Portugal, 05-08 July, 2010
ABSTRACT The objective of this study is to analyze the flow pattern trough a patient specific lower airway under multiple breathing conditions. The measured Particle Image Velocimetry (PIV) results are quantitatively and quantitatively compared ...
Other Products Cited: Flow Visualization SuperPump
Visit SourceMichel R. Labrosse, Keegan Lobo, Carsten J. Beller, Journal of Biomechanics 43, 1916–1922; 2010.
A novel finite element model of the natural aortic valve was developed implementing anisotropic hyperelastic material properties for the leaflets and aortic tissues, and starting from the unpressurized geometry. Static pressurization of the aortic root, silicone rubber moulds and published data helped to establish the model parameters, while high-speed video recording of the leaflet motion in a left-heart simulator allowed for comparisons with simulations.
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceAndrew D. Michaels MD, David Mester, Catheterization and Cardiovascular Interventions Vol. 77, issue 5, pages 726-732, April 2011.
Abstract OBJECTIVES: Accurate assessment of prosthetic mechanical valve malfunction is challenging for non-invasive and invasive techniques. We evaluated a 0.014-inch pressure-sensing coronary guidewire to assess mechanical valve dysfunction.
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceMinsuok Kim; Ciprian Ionita; Rekha Tranquebar; Kenneth R. Hoffmann; Dale B. Taulbee; Hui Meng; Stephen Rudin - Proceedings Volume 6143, Medical Imaging 2006: Physiology, Function, and Structure from Medical Images; 61432G (2006) https://doi.org/10.1117/12.651773 Event: Medical Imaging, 2006, San Diego, California, United States
Stenting may provide a new, less invasive therapeutic option for cerebral aneurysms. However, a conventional porous stent may be insufficient in modifying the blood flow for clinical aneurysms. We designed an asymmetric stent consisting of a low porosity patch welded onto a porous stent for an anterior cerebral artery aneurysm of a specific patient geometry to block the strong inflow jet... … 2.5. Angiographic flow visualization The rapid prototype aneurysm model was inserted in a flow loop consisting of a waveform generator, a pump, and a flow meter; the flow was activated by a heart simulating pump (Vivitro Systems Inc., Canada) …
Other Products Cited: Stent and Stent/Graft SuperPump
Visit SourceA Saini - 2011 - conservancy.umn.edu
The objective of this thesis is to 1) describe the product development cycle for the DS1000, a surgical instrument for Mitral Valve repair. A chapter is then provided for 2) adapting the device development cycle to a development cycle for a simulator. This is followed by 3)...
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Visit SourceS Fortini, S Espa, R Toninato, L Pacetti, G Querzoli… - assessment, 2012 - ltces.dem.ist.utl.pt
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Visit SourceTE Claiborne III - dspace.sunyconnect.suny.edu
Valvular heart disease remains a significant public health issue with Calcific Aortic Valve Disease (CAVD) its most life threatening form. Current treatment for CAVD involves open-heart surgical replacement of the diseased aortic valve (AV) with either a tissue (THV) or mechanical (MHV) prosthesis, with THVs being mostly nonthrombogenic but vulnerable to structural valve deterioration (SVD) and MHVs being highly durable but thrombogenic, thus requiring lifelong anticoagulant therapy.
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceN Saikrishnan, G Tamilselvan… - Transactions of the …, 2011 - researchgate.ne
ABSTRACT Aortic valve (AV) calcification is a highly prevalent disease with serious impact on mortality and morbidity. The exact cause and mechanism of the progression of AV calcification is unknown, although mechanical forces have been known to play...
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Visit SourceV Millette, N Baddour - Biomedical engineering online, 2011 - biomedcentral.com
Heart signals represent an important way to evaluate cardiovascular function and often what is desired is to quantify the level of some signal of interest against the louder backdrop of the beating of the heart itself. An example of this type of application is the quantification of cavitation in mechanical heart valve patients.
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Visit SourceA Beaulieu, E Foucault, P Braud… - … (MeMeA), 2011 IEEE …, 2011 - ieeexplore.ieee.org
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Visit SourceJ Cysyk, R Newswanger… - … in Medicine and …, 2011 - ieeexplore.ieee.org
Due to improved reliability and reduced risk of thromboembolic events, continuous flow left ventricular assist devices are being used more commonly as a long term treatment for end-stage heart failure. As more and more patients with these devices are leaving the hospital, a reliable control system is needed that can adjust pump support in response to changes in physiologic demand.
Other Products Cited: VAD Testing
Visit SourceO Bazan, JP Ortiz - Revista Brasileira de Cirurgia Cardiovascular, 2011 - SciELO Brasil
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceAN Azadani, N Jaussaud, L Ge, … - The Annals of thoracic …, 2011 - Elsevier
Transcatheter aortic valve (TAV) implantation is a treatment for selected patients with failing bioprostheses. We previously showed that currently available SAPIEN (Edwards Lifesciences, Irvine, CA) TAV sizes did not yield acceptable valve-in-valve (VIV) hemodynamics in small degenerated bioprostheses because optimal TAV function requires full stent expansion to its nominal size.
Other Products Cited: Heart Valve Testing Pulse Duplicator
Visit SourceF Robicsek, RF Padera Jr… - HSR proceedings in …, 2012 - ncbi.nlm.nih.gov
Other Products Cited: Heart Valve Testing Pulse Duplicator
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