The invention discloses a high-
pressure injection system and method. The high-
pressure injection system comprises an equipment body, an injection propelling device, a needle cylinder pipeline suite, a
medicine bottle replacing device, a bubble induction sensor, a gravity sensor, a
pressure sensor and a
control system, wherein the injection propelling device, the needle cylinder pipeline suite, the
medicine bottle replacing device, the bubble induction sensor, the gravity sensor and the
pressure sensor are installed on the equipment body; wherein the
medicine bottle replacing device is used for containing and automatically replacing
medicine bottles; the needle cylinder pipeline suite is communicated with the needle cylinder pipeline suite through a puncture outfit, and can selectively suck liquid medicine and continuously inject multiple patients; the injection propulsion device drives a needle cylinder
piston to realize precise injection; the bubble induction sensor, the gravity sensor and the
pressure sensor are respectively used for monitoring pipeline bubbles, medicine bottle weight and needle
cylinder pressure in real time; the
control system coordinates all the components, and full-automatic execution of medicine bottle replacement, medicine liquid extraction, pipeline exhaust and injection control operation is achieved. Full
automation of the injection preparation process is achieved, the
radiography examination efficiency is remarkably improved, the labor intensity of medical workers is reduced, and the safety and accuracy of the injection process are ensured.