A medical retrieval device may include an elongated member having first and second end portions and a middle portion, The elongated member may be configured such that the first and second end portions are proximal one another and extend substantially parallel to one another along a longitudinal axis The middle portion may have an unconstrained basket configuration A first sheath may be configured to receive at least a portion of the first end portion, and a second sheath may be configured to receive at least a portion of the second end portion At least one of the first and second sheaths may be movable relative to the middle portion so as to constrain the middle portion in an elongated configuration.
