Convertible postcava thrombosis filter

Abstract

The invention discloses a convertible postcava thrombosis filter. The convertible postcava thrombosis filter comprises an intravascular stent. The cross section of the intravascular stent is a circular structure. Two sides of the intravascular stent are provided with support rings. One side of each support ring is provided with a support frame in a U-type structure, and openings of the support frames face to the support rings. The same connecting rod is welded between the interior of the openings of the support frames and the support rings, and the middle of one side of the connecting rod is provided with a through channel. The convertible postcava thrombosis filter is capable of, through installing the thrombosis filter in a fusiform structure formed by an arc rod in the intravascular stent, enabling the intravascular stent to be combined with the postcava thrombosis filter, reducing the treatment cost, enabling the postcava thrombosis filter to be converted to the intravascular stentfor adherence while implanted for four to six weeks, avoiding a problem that the lifelong administration is needed for a permanent filter, and avoiding a problem that the cost is increased because atemporary filter needs to be taken out.

Description

technical field [0001] The invention relates to the technical field of medical appliances, in particular to a switchable inferior vena cava thrombus filter. Background technique [0002] There are two types of venous thrombosis: one is thrombophlebitis, which means that inflammation is the first and thrombosis is secondary; the other is venous thrombosis, which means that thrombosis is the first phenomenon, and the inflammatory process of the vein wall is Secondary, deep vein thrombosis of the lower extremities is most common. The elderly not only have a high incidence rate, but also are prone to fatal pulmonary embolism, which deserves attention. After the formation of a thrombus in a large vein of the lower extremity, it is difficult to dissolve and dredge naturally, resulting in thrombus muscularization and venous lumen occlusion. Insufficiency often occurs, and deep vein thrombosis often invades venous communication branches. The above three conditions cause dilation of...

AI Technical Summary

Problems solved by technology

This state is called post-thrombotic syndrome, and its symptoms are edema, swelling, heaviness, and even pain of the entire affected limb. Standing or sitting for a long time can aggravate the symptoms. Currently, the inferior vena cava thrombosis mainly relies on the inferior vena cava thrombosis filter Treatment, but permanent inferior vena cava filter needs to take medicine for life, and temporary inferior vena cava filter needs to be taken out to increase the cost

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