The invention discloses a double-
bottle intravenous infusion
system with an adjustable mechanical constant flow valve, which comprises a
compressed air power unit, a mechanical constant flow adjustable valve and an air pressure driving
infusion unit, and realizes passive constant-speed infusion through a pure mechanical structure. The
compressed air power unit provides an independent high-pressure air source, the mechanical constant-flow adjustable valve is of a three-
level structure of
pressure reduction and stabilization, laminar flow stabilization and pressure compensation feedback, fluctuation air pressure is converted into constant air flow, and the air pressure driving liquid conveying unit achieves constant-speed liquid output with gas-liquid isolation through a double-layer
bottle body structure. And mechanical blockage alarm and
overvoltage protection are built in. The device does not need
electric power, is high in flow velocity precision, high in stability, free of
pollution risk due to gas-liquid isolation, high in
system integration degree, portable and long-acting, can support several-hour infusion through single inflation, is suitable for non-electric or non-electric medical scenes such as
battlefield first aid, disaster rescue and MRI rooms, and can also be extensively applied to the fields of wound flushing, contrast agent injection and the like.