Computer-aided vascular experimentation: a new electromechanical test system.
We present a new computer-controlled, electromechanical system for performing simultaneous extension, inflation, and torsion experiments on cylindrical segments of natural and artificial blood vessels. Specimens are tested while immersed in a temperature-controlled, oxygenated, physiologic solution. Deformations are measured within a central region of the specimen using noncontacting video methods. The associated axial loads, luminal pressures, and torques are measured with standard transducers. Data are collected and stored on-line, and are used in the feedback control of experimental protocols, which are prescribed using custom interactive software. Finally, we present illustrative data obtained from canine aortas and common carotid arteries.
Humphrey
J D
JD
Department of Mechanical Engineering, University of Maryland, Baltimore 21228-5398.
Kang
T
T
Sakarda
P
P
Anjanappa
M
M
D000818:Animals; D001013:Aorta, Thoracic / Q000502:physiology*; D001696:Biomechanical Phenomena; D002339:Carotid Arteries / Q000502:physiology*; D004285:Dogs; D001330:Electronic Data Processing / Q000295:instrumentation / Q000379:methods / Q000592:standards*; D005069:Evaluation Studies as Topic; D008955:Models, Cardiovascular; D012212:Rheology; D013718:Tensile Strength; D014102:Torsion Abnormality; D014664:Vasodilation