US Patent 11221099 Stents and methods for repairing pipes

Example aspects of a stent for repairing a pipe and a method for repairing a pipe are disclosed. The stent for repairing a pipe can comprise a spring comprising a metal wire and defining a tubular structure, the spring defining an outer surface and an inner surface, the inner surface defining a void, an axis extending through the void; and a sealing layer defining a sleeve, the sealing layer wrapped around a circumference of the spring and engaging the outer surface of the spring; the stent configurable in a compressed configuration, wherein the spring is compressed, and an expanded configuration, wherein the spring is expanded