Flexible secure connection of multiple guidewires

A selectively connectable medical device, comprising:

• a first flexible wire having an orifice on a distal end thereof;
• a flexible sleeve surrounding the first flexible wire, the flexible sleeve being movable along the first flexible wire to a first orientation exposing the orifice, and a second orientation extending over the orifice;
• a second flexible wire having a flexible graspable region on an end thereof, wherein the orifice of the first wire is sized to permit the flexible graspable region of the second wire to be threaded through the orifice when the orifice is exposed, and wherein the flexible sleeve is configured, when the flexible graspable region of the second flexible wire is threaded through the orifice, to be moved to the second orientation causing the flexible graspable region of the second flexible wire to bend about an edge of the orifice, and to simultaneously cover the orifice of the first wire and at least a portion of the flexible graspable region of the second wire, thereby locking the second wire to the first wire;
• and
• a flexible wire locking element proximate an end of the flexible graspable region, wherein the flexible wire locking element is configured to render rigid a distal region of the flexible graspable region.