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Showing 1 to 7 of 7 for “"Herzklappenprothesen"”.
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In vitro Kavitationsuntersuchungen an mechanischen Herzklappenprothesen
Cavitation at mechanical heart valves with it's character of impairment still represents a major task. In this dissertation -in continuation of the studies of Graf et al. -several investigations of cavitation, in particular of "severe" vapor cavitation, were conducted in order to describe the …
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Entwicklung einer neuen Dauertestanordnung für Herzklappenprothesen auf der Basis physiologischer Belastungen
The fatigue testing of heart valve prostheses is an important aspect of the entire testing catalogue for the approval of a new heart valve model. In order to get information about wear and fatigue within an acceptable time window it is neccessary to test the valves with rates up to 2000 beats/min. …
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Quantitative Analyse klappeninduzierter Mikroembolien mittels Doppler-Sonographie in vitro für gängige Herzklappenprothesen
Patients with mechanical heart valve prostheses show significantly enhanced numbers of HITS detectet by transcranial Doppler- ultrasound. In order to assess the origin of HITS formation an in vitro study was carried out to quantify valve induced gaseous microemboli for mechanical and bioprosthetic …