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

Volume

1

fYear

1999

fDate

1999

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;

fLanguage

English

Publisher

ieee

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

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.802230

Filename

802230