Guidewire device with deployable distal end portion, systems and methods thereof

A method of positioning a guidewire at a target location, the method comprising:

• positioning a distal end of a catheter adjacent the target location;
• advancing a guidewire through a lumen of the catheter, the guidewire including a guidewire body and a guidewire end portion, the guidewire end portion coupled to a distal end of the guidewire body;
• and
• deploying the guidewire end portion from the distal end of the catheter such that the guidewire end portion includes a self-expandable structure to move from a constricted position within the catheter to a deployed, expanded position;
• wherein, upon deploying the guidewire end portion, bracing a distal most side surface of the guidewire end portion against tissue adjacent the target location.