In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position

Z. G. Feng; M. Umezu; T. Fujimoto; T. Tsukahara; M. Nurishi; D. Kawaguchi

In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position

Z. G. Feng^*, M. Umezu, T. Fujimoto, T. Tsukahara, M. Nurishi, D. Kawaguchi

^*Corresponding author for this work

School of Creative Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Four different designs of 25 mm bileaflet valves were tested in the mitral position using our originally developed in vitro test apparatus. By the aid of a high-speed video camera, it was observed that the SJM HP valve opened fully and the CM nearly opened fully (76°±2°). Max opening angle of the ATS and the On-X was 72°±3° and 81°±2°, respectively, whereas their opening angle was designed as 85° and 90°, respectively. Pressure gradients of the CM and the ATS were consistently higher than those of the On-X and the SJM HP. Closing volume for all the valves was within the acceptable range (<8%).

Original language	English
Title of host publication	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Publisher	IEEE
Number of pages	1
ISBN (Print)	0780356756
Publication status	Published - 1999 Dec 1
Event	Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS) - Atlanta, GA, USA Duration: 1999 Oct 13 → 1999 Oct 16

Publication series

Name	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume	1
ISSN (Print)	0589-1019

Other

Other	Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS)
City	Atlanta, GA, USA
Period	99/10/13 → 99/10/16

ASJC Scopus subject areas

Signal Processing
Biomedical Engineering
Computer Vision and Pattern Recognition
Health Informatics

Cite this

Feng, Z. G., Umezu, M., Fujimoto, T., Tsukahara, T., Nurishi, M., & Kawaguchi, D. (1999). In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings; Vol. 1). IEEE.

In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. / Feng, Z. G.; Umezu, M.; Fujimoto, T. et al.
Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. IEEE, 1999. (Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Feng, ZG, Umezu, M, Fujimoto, T, Tsukahara, T, Nurishi, M & Kawaguchi, D 1999, In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. in Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, vol. 1, IEEE, Proceedings of the 1999 IEEE Engineering in Medicine and Biology 21st Annual Conference and the 1999 Fall Meeting of the Biomedical Engineering Society (1st Joint BMES / EMBS), Atlanta, GA, USA, 99/10/13.

Feng ZG, Umezu M, Fujimoto T, Tsukahara T, Nurishi M, Kawaguchi D. In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. IEEE. 1999. (Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings).

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title = "In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position",

abstract = "Four different designs of 25 mm bileaflet valves were tested in the mitral position using our originally developed in vitro test apparatus. By the aid of a high-speed video camera, it was observed that the SJM HP valve opened fully and the CM nearly opened fully (76°±2°). Max opening angle of the ATS and the On-X was 72°±3° and 81°±2°, respectively, whereas their opening angle was designed as 85° and 90°, respectively. Pressure gradients of the CM and the ATS were consistently higher than those of the On-X and the SJM HP. Closing volume for all the valves was within the acceptable range (<8%).",

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T1 - In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position

AU - Feng, Z. G.

AU - Umezu, M.

AU - Fujimoto, T.

AU - Tsukahara, T.

AU - Nurishi, M.

AU - Kawaguchi, D.

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AB - Four different designs of 25 mm bileaflet valves were tested in the mitral position using our originally developed in vitro test apparatus. By the aid of a high-speed video camera, it was observed that the SJM HP valve opened fully and the CM nearly opened fully (76°±2°). Max opening angle of the ATS and the On-X was 72°±3° and 81°±2°, respectively, whereas their opening angle was designed as 85° and 90°, respectively. Pressure gradients of the CM and the ATS were consistently higher than those of the On-X and the SJM HP. Closing volume for all the valves was within the acceptable range (<8%).

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In vitro investigation on opening angle and hydrodynamic performance of four bileaflet valves in mitral position

Abstract

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ASJC Scopus subject areas

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