ONE-WAY VALVE OPENING DEVICE, INDWELLING NEEDLE COMPRISING SAME, AND BRONCHIAL STENT

A one-way valve opening device, comprising a gasket (4) and a plurality of elastic fine fibers (3), wherein one end of each of the plurality of fine fibers (3) is fixed to the gasket (4), and the other end thereof is free; when the pressure on free ends (6) is not lower than that on fixed ends (5), the free ends (6) of the plurality of fine fibers (3) stay in a gathered state, the plurality of fine fibers (3) are in the form of a cone as a whole; and when the pressure on the free ends (6) is lower than that on the fixed ends (5), the free ends (6) of the plurality of fine fibers (3) are dispersed and are in an open state. The one-way valve opening device is placed into an indwelling needle, a thrombus (11) caused during the usage of the indwelling needle can be prevented in a needle hub (9), such that the thrombus (11) is prevented from entering a human body, and serious consequences caused by the entry of the thrombus (11) into the human body are thus reduced. The one-way valve opening device is placed in a bronchus (16) of a lesion area in a human body, such that the movement direction of sputum (19) can be limited, so that the sputum (19) is discharged out of the body, and the intake and output of gas and liquid is not limited, but same can directly reduce the air intake volume in the lung in the lesion area, indirectly improving the ventilation/perfusion blood flow ratio of a normal lung, and also does not affect subsequent treatments such as alveolar lavage.