Disposable penholder type safe anti-backflow vein blooding needle

• Main Author: LIU ZHENKUAN
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2018
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The invention relates to the field of medical instruments and specifically relates to a disposable penholder type safe anti-backflow vein blooding needle. The disposable penholder type safe anti-backflow vein blooding needle comprises a vein puncture needle and a needle base, wherein a check valve fixing base is arranged in a hollow chamber of the needle base; an anti-backflow check valve is assembled on the check valve fixing base; the check valve fixing base is grafted and assembled in an inner chamber of the needle base from the front end of the needle base; the tail end of the vein puncture needle is inserted and assembled in a blood inlet of the check valve fixing base; the tail end of a puncturing end protecting sleeve sleeves an outer wall of the front part of the needle base; a pipe plug puncturing needle is inserted and assembled on a tail blood outlet of the needle base; a latex protecting sleeve sleeves the pipe plug puncturing needle; a butt-joint end protecting cover sleeves the exterior of the l