Postcava filter being capable of being placed for long term and provided with anti-proliferation and antithrombus medicine coating

Abstract

The invention relates to the technical field of medical instruments, and in particular relates to a postcava filter being capable of being placed for a long term and provided with an anti-proliferation and antithrombus medicine coating. The postcava filter comprises a branch pipe, a pipe sleeve and a plurality of metal filtering wires, wherein two ends of the metal filtering wires are respectivelyconnected in the branch pipe and the pipe sleeve, and the metal filtering wires are convex outwards, so that a filtering cage is formed; the branch pipe and the pipe sleeve are made of a soft material; a first medicine coating used for resisting thrombus coats each metal filtering wire. According to the postcava filter, the thrombus can be intercepted through the metal filtering wires, so that embolism seldom occurs, due to the first medicine coatings on the metal filtering wires, the taking-out time of the filter can be prolonged, meanwhile, the occurrence rate of a series of complications including the difficulty in taking out, the injuries or tearing of the blood vessels, and the like which are caused by too late taking out can be reduced, the branch pipe and the pipe sleeve sleeve twoends of the metal filtering wires, so that the blood vessels are seldom injured. The postcava filter is strong in practicability and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an inferior vena cava filter coated with anti-proliferation and antithrombotic drugs that can be placed for a long time. Background technique [0002] Currently, the incidences of deep venous thrombosis (deep venous thrombosis, DVT) and pulmonary thromboembolism (pulmonarythromboembolism, PE) are increasing day by day. As the most serious complication of DVT, PE has very high morbidity and mortality. According to epidemiological surveys in recent years, the annual incidence of PE in the United States alone is 750,000 to 900,000, and the annual death toll is 120,000 to 150,000. Pulmonary thromboembolism not only has a very high morbidity and mortality rate, but also has a sudden onset and rapid progression. Generally, patients with pulmonary thromboembolism die within the first hour of onset. Pulmonary thromboembolism also leads to chronic pulmonary hypertension, which se...

AI Technical Summary

Problems solved by technology

[0007] At present, the inferior vena cava filter has insufficient anti-thrombotic ability, and it is prone to vascular endothelial hyperplasia, vascular injury or tearing, etc.

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