A simple fluid-mechanical model for the prediction of the stress-strain relation of the male urinary bladder.
The non-linear, viscoelastic behavior of the male urinary bladder complicates the formulation of suitable stress-strain relations for the quasi-static filling process and the unsteady voiding process. In particular, the voiding process-which, in addition, is affected by contraction of muscles leading to generation of bladder wall tension-makes it difficult to obtain quantitative results. In the present study, a simple model is developed that uses certain urological data from cystometry and uroflowmetry to determine the stress-strain relations of the bladder wall during both filling and voiding.
Korkmaz
I
I
Lehrstuhl für Strömungsmechanik, Institut für Thermo- und Fluiddynamik, Ruhr-Universität Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany.
Rogg
B
B
D001696:Biomechanical Phenomena; D006801:Humans; D008297:Male; D008954:Models, Biological; D012212:Rheology; D013314:Stress, Mechanical; D001743:Urinary Bladder / Q000502:physiology*