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Development of Polymer Prosthetic Heart Valve - Fabrication and In Vitro Test- : 고분자 인공 심장판막의 개발 -제작과 성능실험
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- Authors
- Issue Date
- 1991-03
- Citation
- Seoul J Med, Vol.32 No.1, pp. 35-42
- Keywords
- Prosthetic heart valve ; Hydrodynamic tester ; Trileaflet polymer valve ; Bileaflet polymer valve
- Abstract
- Prosthetic heart valves (PHV) with various types and materials have been
developed and used until now, but PHVs have various problems that need improving.
A new type of polymer PHV have been developed to ameliorate these problems. A
hydrodynamic tester has also been developed for the precise evaluation of hydrodynamic
performance of the developed PHV.
PHV are composed of polyurethane, a material commonly used in biomedical materials
because of its good biocompatibility and mechanical properties. To investigate
its hydrodynamic properties, a trileaflet and bileaflet type polymer valve was fabricated.
The results of comparative tests with the 2 polymer valves and a mechanical valve
showed that the trileaflet polymer valve had a better hydrodynamic performance than
the others. Though the bileaflet polymer valve showed a higher pressure drop and regurgitation
than the trileaflet valve due to thicker leaflet flection of the bileaflet valve,
if its fabrication method and design were corrected, a better result could be expected.
For a study of the long-term stability of the PHV, accelerated endurance tests and
stress analysis of PHVs are needed.
- ISSN
- 0582-6802
- Language
- English
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