A guidewire is a thin, flexible wire used in medical procedures, particularly in cardiology and interventional radiology. It serves as a pathway for other instruments, such as catheters, to navigate through blood vessels or other anatomical structures. Guidewires come in various lengths and stiffness levels, allowing healthcare professionals to choose the appropriate type for specific procedures. During a procedure, the guidewire is inserted into the body and advanced to the target area. Once in place, it provides stability and guidance for the subsequent placement of devices, such as stents or balloons, enhancing the safety and effectiveness of the intervention.