Vena cava filter coated with macromolecular coating and preparation method for macromolecular coating

Abstract

The invention provides a vena cava filter coated with a macromolecular coating and a preparation method for the macromolecular coating. A recycling part, a pre-filtering part, a supporting part, an anti-shifting part and a filtering capturing part are all formed by cutting a same memory alloy material through laser; the filtering capturing part is characterized in that six V-shaped rods stretch out from a closed annular structure in a parallel form, the structure is equally divided by the V-shaped rods and is rotated, and a branch end is connected with a supporting part, so that a conical netted structure is formed; and the surface layers of the recycling part, the pre-filtering part, the supporting part, the anti-shifting part and the filtering capturing part are all coated with the macromolecular coatings. A metal filter provided by the invention adopts the unique hexahedral column structural design, so that the metal filter has excellent adherence property and is easier to recycle; the endothelialization process after the filter is planted into a vena cava vessel is effectively slowed down and the internal planting time of the filter is prolonged by the macromolecular coating; and the difficulty in recycling the filter is relieved and the harm to the vena cava of a patient caused by a recycling stage is reduced.

Description

technical field [0001] The invention relates to a vena cava filter covered with polymer coating and a preparation method of the polymer coating, belonging to the technical field of vena cava filter and coating preparation method. Background technique [0002] Deep vein thrombosis has become a common disease that endangers human health. The incidence rate is increasing year by year. The important complication is that the thrombus repeatedly falls off, leading to pulmonary embolism or pulmonary infarction. The mortality rate is extremely high and seriously endangers the life of the patient. Traditional surgical treatment involves large trauma and high risk. In recent years, interventional therapy has been adopted. Percutaneous subcutaneous vena cava filter placement is a percutaneous puncture method, through which a catheter is used to place a metal filter in the inferior vena cava. It can prevent thrombus from ascending and prevent or reduce pulmonary thromboembolism. Compar...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing recyclable filter cannot be recovered smoothly due to tissue adhesion, vascular endothelialization, etc., and to provide a vena cava filter covered with a polymer coating and the preparation of the polymer coating method

Images