Internal arteriovenous fistula puncture needle

• Main Authors: ZHANG HONGYAN, DONG YI, LUO SHUIYING, YANG TING, TAN CHUNMEI
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The utility model discloses an internal arteriovenous fistula puncture needle which comprises a steel needle, a hose and a rotary switch. A valve is arranged at the end, connected with the steel needle, of the hose, and the tail end of the steel needle penetrates through the valve to be detachably connected with the hose. A hose separation blade is arranged in the other end of the hose and is detachably connected with the rotary switch; the rotary switch comprises a pipe body and a switch blocking piece arranged at one end of the pipe body, and the hose blocking piece and the switch blocking piece are both semicircular. The steel needle and the hose of the puncture needle are detachable, so that the treatment cost of sharp instrument garbage is reduced. The rotary switch can timely close the puncture needle when checking whether the steel needle enters the blood vessel or not after the puncture is finished, or before the needle is withdrawn or when the blood is led to the machine, thereby avoiding blood loss