Woven type vena cava filter and weaving method

The invention provides a woven type venae cava filter. The woven type venae cava filter is characterized by comprising a filter part, a fixing part and connecting parts, wherein the filter part, the fixing part and the connecting part are woven together and distributed in sequence from a heart near end to a heart far end; the filter part comprises N1 Y-type woven structures distributed in the circumferential direction; the fixing part comprises N1 ridges distributed in the circumferential direction; the connecting parts are of conical woven structures which are formed by extending directly the N1 ridges of the fixing part and ligating by second steel bushings or conical woven structures which are formed by extending the N1 ridges of the fixing part, then weaving, and then ligating by the second steel bushings. Another technical scheme of the invention provides a weaving method of the woven type venae cava filter. The venae cava filter, provided by the invention, can intercept larger size internal clots in the pulmonary embolism dangerous period, prevents venae pulmonales embolism, keeps smooth for a long term by shear force, can be taken out by an interventional operation after passing the pulmonary embolism dangerous period, and also can remain in a patient's body for a long term.