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Development of In-Vitro Evaluation System for Annuloplasty Rings

Department of Mechanical Engineering Umezu Biomedical Engineering Laboratory Waseda University Tokyo, Japan
For reprint information contact: Mitsuo Umezu, MD, PhD Tel: 81 3 5286 3256 Fax: 81 3 3200 2516 email: umezu{at}mn.waseda.ac.jp Department of Mechanical Engineering, Umezu Biomedical Engineering Laboratory, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.

An in-vitro system was devised to study the performance of newly developed annuloplasty rings as well as various conventional rings. The Duran Flexible Annuloplasty Ring was tested to define its characteristics and to validate the system for comparative testing. It was possible to obtain quantitative data using a microscope and a load cell to respectively measure valve orifice area and tensile load on the valve annulus. The results suggest that this apparatus could be employed to characterize the features and functional performance of other types of annuloplasty ring.

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				M. Arita, S. Tono, H. Kasegawa, and M. Umezu Multiple Purpose Simulator Using a Natural Porcine Mitral Valve Asian Cardiovasc Thorac Ann, December 1, 2004; 12(4): 350 - 356. [Abstract] [Full Text] [PDF]