Auxiliary positioning structure for arteriovenous paracentesis

The utility model discloses an auxiliary positioning structure for arteriovenous paracentesis, which comprises a fixing band and a fixing structure for fixing the fixing band on the arm of a patient, a pair of convex rings is arranged on the outer side surface of the fixing band at intervals, and the convex rings are arranged close to the edge of the fixing band; a positioning piece is movably connected between the pair of convex rings in a sleeved mode, a guide pin groove is formed in the upper surface of the positioning piece, a telescopic rod is connected to the adjusting end of the positioning piece, scale marks are arranged on the telescopic rod, and the bottom end of the telescopic rod is connected with the fixing belt. According to the auxiliary positioning structure for arteriovenous paracentesis, through effective design of the structure, high consistency of puncture points of a buttonhole type puncture method can be achieved, and the auxiliary positioning structure is novel and simple in structure,