Novel recoverable type vena cava filter

Abstract

The invention discloses a novel recoverable type vena cava filter. The novel recoverable type vena cava filter comprises a recovery column, a first support column and a second support column, the first support column comprises a first connecting column and a first locating column, the second support column comprises a second connecting column and a second locating column, the upper ends of the first connecting column and the second connecting column are connected with the recovery column, the upper end of the first locating column is connected with the lower end of the first connecting column,the upper end of the second locating column is connected with the lower end of the second connecting column, and locating hooks are arranged at the lower ends of the first locating column and the second locating column; a filter column is arranged between the two adjacent support columns, the upper end of the filter column is connected with the recovery column, and two filter wires are arranged at the lower end of the filter column. When the novel recoverable type vena cava filter is used, the hooks on the first locating column and the second column are penetrated into the vessel wall, dual locating is achieved, the stability of the vena cava filter is guaranteed, the phenomenon that the vena cava filter inclines under the impact of gravity or blood is prevented, and convenience is brought to recycling. In addition, the filter can perform dual filtering on the blood, and the filter effect on thrombus is improved.

Description

technical field [0001] The invention relates to the field of medical supplies, in particular to a novel recyclable vena cava filter. Background technique [0002] Deep Vein Thrombosis (DVT) refers to abnormal coagulation of blood in deep veins due to vessel wall damage, blood stasis, blood hypercoagulability, etc. Embolism (Pulmonary embolism, PE). For this kind of problem, the inferior vena cava filter (InferiorVenacavaFilter, IVCF) is usually placed percutaneously, which can effectively prevent fatal PE and is widely used in clinical practice. IVCF captures large clots that can cause blockage of the main pulmonary artery. Through blood washing and percutaneous catheter thrombus aspiration, catheter thrombolysis dissolves or converts large blood clots into small blood clots, and finally distributes in the pulmonary artery The small branches can minimize the impact of thrombus on the pulmonary circulation. [0003] There are three types of vena cava filters currently on t...

AI Technical Summary

Problems solved by technology

[0006] The invention patent application with the application number 201610277846.9 discloses a vena cava filter, which mainly solves the problem that the vena cava filter is easy to tilt after being inserted into the blood vessel. They are all set to point contact, which increases the stability of the fixation. However, since the length of the upper pillar is shorter than that of the lower pillar, after opening, the distance between the adjacent two upper pillars is greater than the distance between the adjacent two lower pillars, so that Only the network composed of the upper struts has the effect of filtering thrombus, and the lower struts only have the function of positioning. The structure of the vena cava filter increases in complexity, but does not enhance the filtering effect on thrombus

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