A guidewire having an elongated core including a distal section having a relatively supple portion, a bendable portion, and an enlarged terminal portion, a radiopaque helical member disposed about the bendable portion and structurally interconnecting the terminal portion and the supple portion, and a thin walled flexible sheath tightly surrounding at least a portion of the enlarged terminal section and overlying the bendable portion, the sheath comprised of lubricious material that enhances endwise guidewire movement.
