In Vitro Testing of Artificial Heart Valves: Comparison Between Newtonian and Non-Newtonian Fluids

1996 ◽  
Vol 20 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Manfred Pohl ◽  
Max Otto Wendt ◽  
Sabine Werner ◽  
Brigitte Koch ◽  
Dietmar Lerche
Keyword(s):  
Artificial Heart ◽  
Heart Valves ◽  
Newtonian Fluids ◽  
In Vitro Testing ◽  
Artificial Heart Valves

Calcification Modelling in Artificial Heart Valves

1992 ◽  
Vol 15 (5) ◽  
pp. 284-288 ◽  
Author(s):  
A.C. Fisher ◽  
G.M. Bernacca ◽  
T.G. Mackay ◽  
W.R. Dimitri ◽  
R. Wilkinson ◽  
...  
Keyword(s):  
Artificial Heart ◽  
Heart Valves ◽  
Test Protocol ◽  
Tissue Sections ◽  
Artificial Heart Valves ◽  
In Vivo Tests ◽  
Tissue Contents ◽  
Histological Staining

This study has examined a range of methods of studying the calcification process in bovine pericardial and polyurethane biomaterials. The calcification methods include static and dynamic, in vitro and in vivo tests. The analytical methods include measurement of depletion rates of calcium and phosphate from in vitro calcifying solutions, analysis of tissue contents of calcium, histological staining of tissue sections for calcium, X-ray elemental analysis, by scanning electron microscopy, of calcium and phosphorus distributions over valve leaflets calcified in vitro under dynamic conditions. Bovine pericardium, in all test settings, calcified to a much greater degree than polyurethane biomaterials. Polyurethane extracts calcified to a greater degree than bulk polyurethanes. The test protocol used allows progress through increasily demanding calcification tests, with the possibility of eliminating unsuitable materials with tests of limited complexity and expense.

Fresh Human Aortic and Artificial Heart Valves Studied in Vitro Using Ultramicroscope Anemometry. Further Results

1982 ◽  
Vol 30 (05) ◽  
pp. 273-280 ◽  
Author(s):  
D. Schramm ◽  
H. Müller-Mohnssen ◽  
W. Baldauf ◽  
H. Meisner
Keyword(s):  
Artificial Heart ◽  
Heart Valves ◽  
Artificial Heart Valves

scholarly journals Numerical Study of Blood Flow Through Artificial Heart Valves

2021 ◽  
Vol 1094 (1) ◽  
pp. 012120
Author(s):  
Hussein Togun ◽  
Ali Abdul Hussain ◽  
Saja Ahmed ◽  
Iman Abdul hussain ◽  
Huda Shaker
Keyword(s):  
Blood Flow ◽  
Artificial Heart ◽  
Heart Valves ◽  
Numerical Study ◽  
Artificial Heart Valves ◽  
Flow Through

On polymeric mobile elements in artificial heart valves and changes occurring in these elements under the action of the blood and its components

1977 ◽  
Vol 19 (6) ◽  
pp. 1537-1544
Author(s):  
E.I. Semenenko ◽  
A.I. Ivanov ◽  
M.A. Markelov ◽  
N.B. Dobrova ◽  
Ye.V. Smurova ◽  
...  
Keyword(s):  
Artificial Heart ◽  
Heart Valves ◽  
Mobile Elements ◽  
Artificial Heart Valves

The course of pregnancy in patients with artificial heart valves

1976 ◽  
Vol 61 (4) ◽  
pp. 504-512 ◽  
Author(s):  
Carlos Ibarra-Perez ◽  
Noel Arevalo-Toledo ◽  
Octavio Alvarez-De La Cadena ◽  
Luis Noriega-Guerra
Keyword(s):  
Artificial Heart ◽  
Heart Valves ◽  
Artificial Heart Valves
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