blood catheter with stent

Abstract

A blood catheter with a stent has a flexible tube body and an expandable stent structure. The tube body has a first open end for blood inflow and a second open end for blood outflow only; the stent structure is composed of a plurality of wires attached to the tube body, and the expansion direction of the stent structure body intersects with the tube body axis. There is a predetermined distance between the wire rod closest to the second open end in the stent structure and the second open end, thereby effectively preventing blood from flowing back into the false lumen through the new breach.

Description

technical field [0001] The invention relates to a blood catheter, in particular to a blood catheter with a stent. Background technique [0002] The largest blood vessel extending outward from the human heart is the aorta. The aorta is divided into the thoracic aorta (aorta thoracalis) and the abdominal aorta (aorta abdominalis). aortae), and descending aorta (aorta descendens), the abdominal aorta is further divided into renal artery upper abdominal aorta (aorta abdominalis suprarenalis), and renal artery lower abdominal aorta (aorta abdominalis infrarenalis). The cross-section of the aorta can be divided into three layers from the inside to the outside, namely the intima (tunica intima) located in the innermost layer and bounding the true lumen of the aorta (true lumen), the media (Tunicamedia) located in the middle layer, and Located in the outermost outer membrane (Tunica adventitia). Common aortic diseases include aortic aneurysm and aortic dissection. Aortic dissecti...

AI Technical Summary

Problems solved by technology

In the stent structure, there is a distance of at least 2 centimeters between the wire material closest to the second opening end and the second opening end, thereby preventing the blood in the vessel lumen from flowing back to the false lumen, effectively solving the problem of blood leakage to the outside of the aorta False cavity problem

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