Title :
The origin and consequence of “negative compliance” in bioprosthetic heart valves
Author :
Adamczyk, M.M. ; Vesely, I.
Author_Institution :
Dept. of Biomed. Eng., Cleveland Clinic Found., OH, USA
Abstract :
To determine the possible role of observed “negative compliance” in bioprosthetic heart valves, biaxial tensile testing was conducted on whole porcine aortic valve roots. Changes in the strain characteristics near the base of the non-coronary leaflet were seen when excess muscle and tissue were removed. In some cases, negative compliance was seen after an initial increase in strain, and appears to be related to the amount of muscle trimmed from the valves
Keywords :
biological tissues; biomechanics; cardiology; prosthetics; stress-strain relations; tensile strength; viscoelasticity; amount of muscle trimmed; biaxial tensile testing; bioprosthetic heart valves; leaflet base; negative compliance; porcine aortic valve roots; strain characteristics; tissue buckling; Biomedical engineering; Biomedical optical imaging; Capacitive sensors; Fabrication; Heart valves; Muscles; Optical fiber testing; Pressure measurement; Strain measurement;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802230
