External vascular stent for relieving left renal vein compression and manufacturing method thereof

Abstract

The invention provides an external vascular stent capable of achieving 3D printing and used for nutcracker syndromes. The external vascular stent is provided with a tubular external vascular stent body. The external vascular stent body is at least oppositely encircled by a first stent part and a second stent part to form a tube shape. A first clamping piece and a second clamping piece are fixedly arranged at the two ends of the first stent part respectively. A third clamping piece and a fourth clamping piece are fixedly arranged at the two ends of the second stent part respectively. The first clamping piece and the third clamping piece can be connected to form a ring shape, and the second clamping piece and the fourth clamping piece can be connected to form a ring shape. The external vascular stent has the advantages of being simple in structure, convenient to use, obvious in effect and wide in patient application range. When the external vascular stent is applied to an operation, wounds are small and the postoperation decompression effect is good. The invention further provides a manufacturing method of the nutcracker syndrome external vascular 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, El-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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