Endoluminal stent

Abstract

The invention discloses a lumen stent, comprising a tubular main body, an inner branch and an outer branch respectively communicated with the tubular main body, and the tubular main body comprises a first main body section, a tapered section and a second main body section which are connected in sequence, The taper section is provided with an outer branch window and an inner branch window, the proximal end of the outer branch is connected to the outer branch window, the distal end of the inner branch is connected to the inner branch window, and the inner branch window is connected. The area is larger than the area of ​​the outer branch window. The beneficial effects of the present invention are as follows: since the area of ​​the inner branch window is larger than that of the outer branch window, most of the blood flow can quickly pass through the inner branch, thereby reducing the blood flow pressure of the outer branch and preventing the distal end of the outer branch from lifting and causing touch the inner wall of the tumor cavity.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a lumen stent. Background technique [0002] In the past ten years, endovascular exclusion of aortic stent grafts has been widely used in thoracic and abdominal aortic aneurysms and arterial dissections. treatment method. During the operation, under X-ray fluoroscopy monitoring, the covered stent is sent to the lesion through the corresponding delivery system. The covered stent isolates the blood flow from the lesion, eliminates the influence of blood pressure on the lesion, and achieves the purpose of healing. [0003] However, the vascular structure of the human body is complex, and there are many side branches. At the same time, individual patients are different. The length of the tumor may be very long, and the location of the tumor may also vary greatly. The situation near the branch is also more common. If the release position of the covered stent i...

AI Technical Summary

Problems solved by technology

[0003] However, the vascular structure of the human body is complex, and there are many side branches. At the same time, individual patients are different. The length of the tumor may be very long, and the location of the tumor may also vary greatly. The situation near the branch is also more common. If the release position of the covered stent is not accurate, the side branch blood vessel will often be occluded

Standardized straight-tube stent-grafts that have been marketed are difficult to meet the treatment requirements of various lesions with large differences in anatomical structure, and it is often necessary to customize side branch vessels for special vascular sites

However, custom-made multi-branch stents are expensive and have a long production cycle, and it is difficult for emergency patients to wait, and the range of indications is small

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