Securing element for resheathing an intravascular device and associated systems and methods

A method of positioning a retrieval device, the method comprising:

• advancing at least a portion of a mesh of a retrieval device distally from a delivery sheath to a partially deployed state, wherein the mesh has a fixed portion fixed to a distal zone of an elongated member, and a free end portion, and wherein (a) during advancement, a securing element coupled to the elongated member is in a first configuration, and (b) in the partially deployed state, the free end portion of the mesh is within the delivery sheath, and the free end portion of the mesh is proximal of the fixed portion;
• and
• retracting the retrieval device proximally such that the securing element expands radially to a second configuration wherein the securing element exerts an outward force against at least a portion of the mesh that is greater than when in the first configuration.