Vena cava filter

Abstract

The invention relates to the technical field of medical devices, and provides a vena cava filter. The vena cava filter comprises a filter body, the filter body comprises a plurality of filtering bodies, supporting bodies are arranged on the filtering bodies, the ends of one sides of the filtering bodies are located in a release end piece, the ends of the other sides of the filtering bodies are located in a recovery end piece, barb pieces are arranged at the positions, close to the side of the release end piece, of the joints of the filter bodies and the supporting bodies, hook pieces are arranged at the positions, close to the side of the recovery end piece, of the joints of the filter bodies and the supporting bodies, and a recovery opening and a recovery end are arranged on the recovery end piece; the supporting bodies are arranged on the filter bodies, so that the conditions of deformation, inclination, displacement, breakage and the like of the vena cava filter can be avoided; and the supporting bodies are prevented from being covered and wrapped by endothelial cells, in the process of taking out the vena cava filter, the situation that the vascular intima is damaged is avoided, and the vena cava filter can be released to intervene at the release end and the recovery end.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a vena cava filter. Background technique [0002] Pulmonary embolism is an emergency with high clinical morbidity and mortality. According to the available statistics, the mortality rate of untreated pulmonary embolism is 20%-30%, and the annual new cases account for about 0.2% of the population. When calculated with a population of 1.35 billion, there are approximately 2.7 million new patients each year. The treatment of pulmonary embolism mostly requires the use of vena cava filters. [0003] In the prior art, the vena cava filter is mainly made of metal materials such as 316L stainless steel, nickel-titanium alloy and the like. After the vena cava filter is placed in the inferior vena cava for a certain period of time, the following situations are prone to occur: 1. The vena cava filter is deformed, tilted, shifted, broken, etc.; Covered and wrapped by endothelial c...

AI Technical Summary

Problems solved by technology

After the vena cava filter is placed in the inferior vena cava for a certain period of time, the following situations are prone to occur: 1. The vena cava filter is deformed, tilted, shifted, broken, etc.; Covered and wrapped by endothelial cells; 3. In the process of taking out the vena cava filter, there is damage to the intima of the vessel; 4. The method of intervening to release the vena cava filter is single; 5. The ability of the vena cava filter to filter thrombus has improved space

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