The invention discloses an
infusion set without orthophthalic matter and with the precision
filtration function. The
infusion set comprises an infusion tube, a puncture outfit, a dripping cylinder, a flow
regulator, a filter, a Luer taper and an infusion needle, wherein the infusion tube is connected with the puncture outfit, the dripping cylinder, the flow
regulator, the filter, the Luer taper and the infusion needle in sequence, a liquid stopping cavity is formed in the filter, a filtering membrane is arranged in the liquid stopping cavity, an exhaust hole is formed in one side wall of the filter, a first
catheter which is communicated with the liquid stopping cavity and upwards extends out is arranged on one side of the filter, a second
catheter which is communicated with the liquid stopping cavity and downwards extends out is arranged on the other side of the filter, and the height of a liquid outlet of the second
catheter is larger than or equal to that of a liquid inlet of the first catheter. According to the
infusion set without the orthophthalic matter and with the precision
filtration function, air entering into the infusion tube can be effectively removed, flow can be automatically stopped, the phenomenon of blood return is avoided, particles in liquid
medicine can be effectively filtered out, and the frequency of the phenomenon of the
thrombus caused by the situation that the particles circulate along with blood is reduced; in addition, due to the fact that non-orthophthalic tributyl O-acetylcitrate serves as
plasticizer of the infusion tube, the infusion set can be
safer to a
human body.