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RISEffect of Leaflet Type and Leaflet-Stent Attachment Height on Transcatheter Aortic Valve Leaflet Thrombosis Potential
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transcatheter aortic valve replacement devices vary in leaflet material and in the height for which leaflets attach to the stented valve frame. Combinations of these features can influence leaflet dynamics, neo-sinus ...
Validation of Cardiac Output as Reported by a Permanently Implanted Wireless Sensor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The CardioMEMS heart failure (HF) system was tested for cardiac output (CO) measurement accuracy using an in vitro mock circulatory system. A software algorithm calculates CO based on analysis of the pressure waveform as ...
Blood Damage Through a Bileaflet Mechanical Heart Valve: A Quantitative Computational Study Using a Multiscale Suspension Flow Solver
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Bileaflet mechanical heart valves (BMHVs) are among the most popular prostheses to replace defective native valves. However, complex flow phenomena caused by the prosthesis are thought to induce serious thromboembolic ...
Blood Damage Quantification in Cardiovascular Flows Through Medical Devices Using a Novel Suspension Flow Method
Publisher: The American Society of Mechanical Engineers (ASME)
Mechanics of Healthy and Functionally Diseased Mitral Valves: A Critical Review
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The mitral valve is a complex apparatus with multiple constituents that work cohesively to ensure unidirectional flow between the left atrium and ventricle. Disruption to any or all of the components—the annulus, leaflets, ...
Design of a Pulsatile Flow Facility to Evaluate Thrombogenic Potential of Implantable Cardiac Devices
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to expensive nature of clinical trials, implantable cardiac devices should first be extensively characterized in vitro. Prosthetic heart valves (PHVs), an important class of these devices, have been shown to be associated ...
Role of Mitral Annulus Diastolic Geometry on Intraventricular Filling Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The mitral valve (MV) is a bileaflet valve positioned between the left atrium and ventricle of the heart. The annulus of the MV has been observed to undergo geometric changes during the cardiac cycle, transforming from a ...
Effect of Hinge Gap Width of a St. Jude Medical Bileaflet Mechanical Heart Valve on Blood Damage Potential—An In Vitro Micro Particle Image Velocimetry Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The hinge regions of the bileaflet mechanical heart valve (BMHV) can cause blood element damage due to nonphysiological shear stress levels and regions of flow stasis. Recently, a micro particle image velocimetry (خ¼PIV) ...
A Method for In Vitro TCPC Compliance Verification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Fontan procedure is a common palliative intervention for sufferers of single ventricle congenital heart defects that results in an anastomosis of the venous return to the pulmonary arteries called the total cavopulmonary ...
In Vitro Comparison of Doppler and Catheter Measured Pressure Gradients in 3D Models of Mitral Valve Calcification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Mitral annular calcification (MAC) involves calcium deposition in the fibrous annulus supporting the mitral valve (MV). When calcification extends onto the leaflets, valve opening can be restricted. The influence of MAC ...