Elastomeric Materials:
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​​   pressure activated valves
​​     ​
​   drug impregnation and elution
   

Silicone Rubber Trigger Valve for Medical Device
(analysis uses Mooney-Rivlin material equation, employs gap-contact and special techniques to handle snap-through thermodynamic singularity)
Beginning Geometry (no pressure applied)
Pressure exceeds opening threshold
Deformation begins
Begin Snap-Through Phenomenon
Snap-Through in Slow Motion
Snap-Through Continues
Snap-Through Continues
Near Fully Open
End-Point, Fully Open
Silicone Implant Drug Release vs. Time
(Example only. Patents on real devices have not yet published.)​