US Patent 11857441 Stent loading device

A device and method for predictably and controlling the collapsing of a collapsible and expandable stent for subsequent translation through a delivery sheath lumen to an anatomical target such as a heart valve or intravascular location for expansion and implantation. The loading device defines in inner lumen comprising a successively decreasing, from the proximal to the distal direction, inner diameter to a region of constant inner diameter wherein the stent is in a collapsed configuration. The device and method may provide for an at least partially collapsed configuration of the stent that may be further collapsed as a part of the implantation procedure and may comprise a stent that is pre-loaded for future use.