title: A multipurpose tissue bending machine.
abstract: A unique tissue bending machine was developed to test the bending properties of normal and bioprosthetic heart valve material. It can be operated in air or in a tissue bath and can measure bending torques with an accuracy in excess of 1.0 microN m. Three contrasting substances were tested to compare their stiffness and to demonstrate the machine.
mesh_terms: D001703:Biophysics / Q000295:instrumentation*; D001705:Bioprosthesis; D006350:Heart Valve Prosthesis; D006801:Humans; D013314:Stress, Mechanical; D013718:Tensile Strength