Visualization of the hinge flow in a 5:1 scaled model of the medtronic parallel bileaflet heart valve prosthesis

1998 ◽  
Vol 25 (5-6) ◽  
pp. 512-518 ◽  
Author(s):  
T. M. Healy ◽  
A. A. Fontaine ◽  
J. T. Ellis ◽  
S. P. Walton ◽  
A. P. Yoganathan
Keyword(s):  
Heart Valve ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Scaled Model ◽  
Hinge Flow

Biological heart valve prosthesis in patients requiring chronic dialysis

2009 ◽  
Vol 56 (S 01) ◽  
Author(s):  
A Böning ◽  
S Haberer ◽  
UP Rosendahl ◽  
I Florath ◽  
JC Ennker
Keyword(s):  
Heart Valve ◽  
Chronic Dialysis ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis

An unusual cause of acute mitral regurgitation in TTK Chitra heart valve prosthesis

2021 ◽  
Author(s):  
Muthukumar Sundaram ◽  
Aayush Poddar ◽  
Ancy Robinson ◽  
Soundaravalli Balakrishnan ◽  
Muralidharan Srinivasan ◽  
...  
Keyword(s):  
Mitral Regurgitation ◽  
Heart Valve ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Acute Mitral Regurgitation

HCT demonstrates proper implantation of Edwards-Sapien XT Transcatheter heart valve prosthesis

ASVIDE ◽  
2016 ◽  
Vol 3 ◽  
pp. 420-420
Author(s):  
Khalil Ahmad ◽  
Kaj Erik Klaaborg ◽  
Vibeke Hjortdal ◽  
Bjarne Linde Nørgaard ◽  
Christian Juhl Terkelsen ◽  
...  
Keyword(s):  
Heart Valve ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Transcatheter Heart Valve ◽  
Edwards Sapien

Static and Dynamic Stresses during Valve Closure of a Bileaflet Mechanical Heart Valve Prosthesis

1991 ◽  
Vol 14 (12) ◽  
pp. 781-788 ◽  
Author(s):  
T.H. Chiang ◽  
H. Lam ◽  
R. Quijano ◽  
R. Donham ◽  
P. Gilliam ◽  
...  
Keyword(s):  
Heart Valve ◽  
Mechanical Heart Valve ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Valve Closure ◽  
Element Analysis ◽  
Dynamic Stresses ◽  
Magnitude Distribution ◽  
Bileaflet Mechanical Heart Valve ◽  
The Impact

The effect of contact geometry and component compliance on the magnitude, distribution, and state of various types of stresses on a bileaflet mechanical heart valve prosthesis during valve closure was analyzed using an Edwards-Duromedics™ mitral valve as example. Static and dynamic stresses developing on both the leaflet and pivot ball during valve closure were modeled using finite element analysis (FEA). Uniform contact between the leaflet and housing as well as between the pivot ball and pivot slot can significantly reduce both static and dynamic stresses around the contact area. The level of the dynamic flexural stresses can be an order of magnitude higher than that of the static stresses. When both the radial and axial compliance of the housing are taken into consideration, peak dynamic stress was more than 40% less than that generated through the impact between a moving leaflet and a non-compliant rigid housing.

In vivo Platelet Release Reaction in Patients with Heart Valve Prosthesis

1980 ◽  
Vol 9 (5) ◽  
pp. 263-275
Author(s):  
G. Cella ◽  
L. Schivazappa ◽  
A. Casonato ◽  
L.G. Molaro ◽  
A. Girolami ◽  
...  
Keyword(s):  
Heart Valve ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Release Reaction ◽  
Platelet Release

scholarly journals Design, development, testing at ISO standards and in vivo feasibility study of a novel polymeric heart valve prosthesis

2020 ◽  
Vol 8 (16) ◽  
pp. 4467-4480
Author(s):  
Joanna R. Stasiak ◽  
Marta Serrani ◽  
Eugenia Biral ◽  
James V. Taylor ◽  
Azfar G. Zaman ◽  
...  
Keyword(s):  
Heart Valve ◽  
Feasibility Study ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Design Development ◽  
Iso Standards ◽  
Bench Testing ◽  
Bioprosthetic Valves

A novel polymeric heart valve shows durability equivalent to 25 years in accelerated bench testing, in vitro hydrodynamics equivalent to existing bioprosthetic valves; and good performance in a small acute feasibility study in sheep.

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