Subclavian vein puncture needle

The utility model relates to a subclavian vein puncture needle comprising an injector and a puncture needle, wherein the puncture needle is connected to the outlet of the injector. The subclavian vein puncture needle is characterized by further comprising a one-way valve and an injector piston, wherein a metal inner core is arranged in the injector, one end of the metal inner core is connected with the puncture needle through the mastoid of the injector, a side hole is formed in the metal inner core near the outlet, the one-way valve is arranged at the inlet of the metal inner core, and the piston of the injector sleeves the metal inner core of a hollow conduit in the middle part. The circular-arc-shaped puncture needle provides a large adjustment space for the injector connected behind the puncture needle, and then the puncture operation and the embedding of a guide steel wire can be realized more conveniently; with the side hole of the metal inner core, venous blood can be extracted easily so that whether the puncture needle enters the vein can be determined conveniently; the guide steel wire can be embedded in the inlet of the metal inner core and the one-way valve is capable of preventing the blood from flowing out; the subclavian vein puncture needle is simple and compact in structure, convenient to use, high in efficiency, wide in application range, and safe and reliable.