Extravascular stent for relieving left renal vein compression and its preparation method

Abstract

The present invention provides a 3D printable extravascular stent for Nutcracker Syndrome. It has a tubular extravascular stent body, and the extravascular stent body is relatively surrounded by at least a first stent part and a second stent part to form a tubular shape; the two ends of the first stent part are respectively fixed with a first engaging part and a The second engaging part; the two ends of the second bracket part are respectively fixed with the third engaging part and the fourth engaging part; the first engaging part can be connected with the third engaging part, and the second engaging part can be connected with the third engaging part The fourth engaging parts are joined to form a ring respectively. The extravascular stent of the present invention has the characteristics of simple structure, convenient use, remarkable effect and wide applicability to patients. It is suitable for small surgical trauma and good postoperative decompression effect. The invention also provides a preparation method of the nutcracker syndrome extravascular stent based on 3D printing.

Description

technical field [0001] The invention relates to the technical field of biomedical materials, in particular to an extravascular stent that can be directly used in clinical surgical treatment, which is used to relieve nutcracker syndrome, and can be provided in a differentiated manner based on 3D printing. Background technique [0002] Nutcracker phenomenon, also known as left renal vein compression, means that the left renal vein is squeezed in the angle formed by passing through the abdominal aorta and the superior mesenteric artery or in the space between the abdominal aorta and the spine during the process of returning to the inferior vena cava. pressure, often accompanied by a decrease in the blood flow velocity of the left renal vein and dilation of the distal vein at the compression site. When the nutcracker phenomenon causes a series of clinical symptoms such as hematuria, proteinuria, and left lower back abdominal pain, it is called nutcracker syndrome. In 1950, E1-S...

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of artificial blood vessels such as insufficient support, they cannot meet the needs of treatment. At present, there is no external stent for the treatment of this disease at home and abroad, with high support strength and personalized design.

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