Lumen stent

Abstract

The invention discloses a lumen stent. The lumen stent comprises a tubular main body, an inner branch and an outer branch, wherein the inner branch and the outer branch communicate with the tubular main body respectively; the tubular main body comprises a first main body section, a taper section and a second main body section which are connected in sequence; the far end of the inner branch is connected to the taper section; the near end of the outer branch is connected to the taper section; and the far end of the inner branch is positioned above the near end of the outer branch. The lumen stent has the beneficial effects that the far end of the inner branch is positioned above the near end of the outer branch, so that when the far end of the inner branch is just released from a conveying sheath, the outer branch is still positioned in the conveying sheath, and blood flow can pass through the inner branch quickly, so that the impact of the blood flow on a stent system is reduced, positioning is facilitated, and a subsequent release process can be more stable.

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

Images