Vena cava filter

Abstract

The invention relates to a vena cava filter, which comprises recovery hooks at two ends. The recovery hooks are connected with mesh baskets respectively, the two mesh baskets in opposite are connectedthrough ribs, each rib comprises non-degradable sections at two ends and a degradable section, the non-degradable sections are connected with the mesh baskets, and each degradable section is arrangedbetween the corresponding non-degradable section and connected with the same. By a combination structure of each rib with the middle degradable section and the non-degradable section at two ends, thedegradable sections can be completely degraded after the filter is imbedded into a blood vessel; after the degradable sections are completely degraded, the filter is converted into two independent filters, the combination length of the non-degradable sections of the ribs with a blood vessel wall is reduced while the contact area is reduced as well, the residual filters at two ends can be conveniently recovered along the direction of the ribs, and accordingly stability, safety and reliability of the filter can be kept while the residual filters can be recovered simply and conveniently at any time. In addition, the vena cava filter is reasonable in structure, safety, steady, reliable in performance and convenient to operate and use, thereby being an ideal convertible vena cava filter.

Description

technical field [0001] The invention belongs to the field of medical equipment, in particular to a vena cava filter. Background technique [0002] Deep venous thrombosis (DVT) of the lower extremities is a common clinical disease and the main cause of pulmonary embolism (PE). The mortality and disability rate of pulmonary embolism is high. The placement of inferior vena cava filter (IVCF) can effectively prevent PE and make thrombolytic therapy safer. The basic principle is to place a filter device below the level of the opening of the renal vein to catch and intercept free emboli in the blood and prevent them from entering the pulmonary circulation. Therefore, it can effectively prevent the occurrence of pulmonary embolism. In recent years, this technology has been gradually promoted and popularized at home and abroad. [0003] Since the first vena cava filter came out in the 1960s, more than ten products have been used clinically at home and abroad. However, the current...

AI Technical Summary

Problems solved by technology

[0006] However, the above two vena cava filters failed to solve the two contradictory problems of good stability after insertion and short recovery time window.

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