Patent ID: 9180028
Filing Date: 2015-11-10
Classification: A61F,A61L,A61M

Abstract:
1. A stent or catheter comprising: a first layer including a coagulated hydrogel polymer material defining a lumen of the stent or catheter; and a second layer encircling the first layer, the second layer including a coagulated hydrogel polymer material fused with the underlying coagulated hydrogel polymer material of the first layer at an interface; the interface having a structural configuration corresponding to the hydrogel polymer material of the second layer in a solvated state fused to the coagulated hydrogel polymer material of the first layer in a dehydrated state; wherein the hydrogel polymer material of the second layer is configured to at least partially constrain radial expansion of the hydrogel polymer material of the first layer upon hydration of the device thereby achieving compression of the first layer; and wherein, upon hydration, most of the structural integrity of the stent or catheter is provided by the structure of the coagulated hydrogel polymer material layers.