circumferentially expandable by using ratcheting locks

Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents > Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents > Stents in the form of a rolled-up sheet expanding after insertion into the vessel > circumferentially expandable by using ratcheting locks

Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (dental prostheses A61C13/00; artificial kidneys A61M1/14; artificial hearts A61M60/00) > Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) > Stents in the form of a rolled-up sheet expanding after insertion into the vessel > circumferentially expandable by using ratcheting locks