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Benjamin Shapiro
Fischell Department of Bioengineering
Joint appointment with:
Institute for Systems Research
2246 Kim Building
University of Maryland
College Park, MD 20742
Tel: (301) 405-4191
Fax: (301) 405-9953

Modeling/Optimization of Valves/Flow in Implantable Urinary Incontinence Devices
Students: Jason West, 
Collaborators: E.Smela, UMD; G.Barrett, Infinte Biomedical Technologies

Model flow in implantable urine control devices to minimize leakage and stresses on the conjugated polymer actuated valves. Optimize the valve design. (13 million people in the US suffer from urinary incontinence [US Department of Health]. The proposed implantable device is flexible and about the size of a short pencil.)

Urine flow and forces on the conjugated polymer actuated valves in the implantable device. From left to right: schematic of the entire device; zoom showing the valve operation (first two figures courtesy of Gary Barrett); urine flow through the chamber and valves (color = pressure, cones = velocity field); and zoom of flow around the valves: the right top panel shows the pressure on the valves which determines the forces and moments on the valves; the right bottom panel shows the zoomed flow field.

implantable urine control device

valve operation
urine flow through the chamber and valves
flow around the valves








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