Provided is a guiding steel wire guiding method in a subclavian
vein catheterization. At first, magnetic materials are arranged on a guiding steel wire, and in the process that the guiding steel wire is propelled from the
tail end of a needle cylinder to the top end of the needle cylinder, a
magnet guide device is utilized to absorb the top end of the guiding steel wire and is arranged outside a guiding steel wire top end path arranged in advance. A guiding steel wire guiding device comprises a puncture needle cylinder, wherein a
syringe needle is arranged at the top end of the needle cylinder, a
piston is arranged in the needle cylinder and provided with a guiding steel wire channel, the guiding steel wire is arranged in the guiding steel wire channel, the top end of the guiding steel wire penetrates through an inner cavity of the needle cylinder and a needle hole in the
syringe needle, the
magnet guide device is arranged on the outer side of the top end of the guiding steel wire, and an interval is arranged between the
magnet guide device and the top end of the guiding steel wire. According to the guiding steel wire guiding method and the guiding steel wire guiding device, the guiding steel wire can avoid entering abnormal parts of jugular veins and the like, the success rate of subclavian
vein puncture is obviously improved, and pain and financial burdens of patients are lightened. Therefore, the method is safe, noninvasive, economical, and environment-friendly.