Abstract Background Interventional medical devices based on thermally responsive shape memory polymer (SMP) are under development to treat stroke victims.The goals of these catheter-delivered devices include re-establishing blood flow in occluded arteries and preventing aneurysm rupture.Because these devices alter the hemodynamics and dissipate thermal energy during the therapeutic procedure, a Sponges first step in the device development process is to investigate fluid velocity and temperature changes following device deployment.Methods A laser-heated SMP foam device was deployed in a simplified in vitro vascular model.Magnetic resonance imaging (MRI) techniques were used to assess the fluid dynamics and thermal changes associated with device Fencing deployment.
Results Spatial maps of the steady-state fluid velocity and temperature change inside and outside the laser-heated SMP foam device were acquired.Conclusions Though non-physiological conditions were used in this initial study, the utility of MRI in the development of a thermally-activated SMP foam device has been demonstrated.