The utility model discloses a disposable external
jugular vein puncture needle structure, which belongs to the technical field of
medical instruments and comprises an indwelling needle outer tube, a
safety valve, a first pipeline, a second pipeline, a precise infusion apparatus, a
positive pressure device, a special blood transfusion interface, an indwelling needle body, a steel needle and an anti-
reflux heparin cap. The remaining needle body is designed to be the needle head with the three inclined faces, the situation of needle pricking injury can be effectively prevented, the exposed
pipe diameter is divided into the first pipeline and the second pipeline, the inner
diameter of the first pipeline is 5 mm, and the length of the first pipeline is increased to 15 cm; the inner
diameter of the second pipeline is 3mm, and the length of the second pipeline is 10cm; the fixator made of soft
silica gel is designed on the indwelling needle outer tube and can be attached to the neck of a patient, pipeline slipping is prevented, and operation is easy and convenient. The design is more suitable for neck
vein puncture, due to the fact that the
blood vessel is thick, the design of the outer
tube diameter of the puncture needle facilitates improvement of the flow speed, and application of the ICU patient external
jugular vein puncture technology is met.