The invention provides a one-way
valve opening device. The device comprises a
gasket and a plurality of elastic fine fibers, wherein one ends of the multiple fine fibers are fixed to the
gasket, and the other ends of the fine fibers are free; the pressure of the free ends is not lower than that of the fixed ends, the free
tail ends of the multiple fine fibers are kept in a gathering state, and the multiple fine fibers are integrally in a cone shape; and when the pressure of the free ends is lower than that of the fixed ends, the free
tail ends of the multiple fine fibers are dispersed and are in an open state. The device is arranged in the indwelling needle, and
thrombus generated in the using process of the indwelling needle can be stopped in a needle seat, so that the
thrombus is prevented from entering the
human body, and the serious consequence caused by the fact that the
thrombus enters the
human body is reduced. The device is placed in the
bronchus of a
lesion area of the
human body, the movement direction of
sputum can be limited, the
sputum can be discharged out of the body, the access of gas and liquid is not limited, the air inflow of the
lung in the
lesion area can be directly reduced, the ventilation /
perfusion blood flow proportion of the
normal lung can be indirectly improved, and meanwhile the follow-up treatment such as alveolar lavage is not affected.