Endoluminal stent

Abstract

The invention relates to a lumen stent, which includes a tube body and a sealing structure sleeved on the tube body, the sealing structure includes a sealing film, a plurality of first support rods and a plurality of second support rods, and the plurality of second support rods and A plurality of first support rods are in one-to-one correspondence. The plurality of first support rods are arranged at intervals along the circumference of the pipe body. One end of each first support rod is connected to the pipe body, and the other end extends obliquely relative to the longitudinal central axis of the pipe body. A plurality of first support rods are radially arranged, one end of each second support rod is connected to one end of each first support rod away from the pipe body, and the other end extends axially along the longitudinal central axis of the pipe body, and at least one The free end of the second support rod forms a plurality of branches, the sealing film is coated on the plurality of first support rods and the plurality of second support rods, and the end of the sealing film far away from the free end of the second support rod is in contact with the outer surface of the pipe body. Face-tight connections. The lumen stent can better avoid intraoperative endoleak.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a lumen stent. Background technique [0002] At present, the use of lumen stents to perform endoluminal isolation to isolate the diseased area in the human lumen has become an increasingly important treatment method. For example, luminal stents can be used to isolate arterial dissections or aneurysms in blood vessels. [0003] In the field of aortic endoluminal therapy, when the dissection rupture is too close to the branch vessels, resulting in insufficient anchoring area of ​​the aortic stent-graft, the chimney technique or in-situ fenestration technique is generally used to isolate the lesion and open the branch at the same time. purpose of blood vessels. Among them, the chimney technique is to pass the stent-graft 20 over and cover the opening of the branch blood vessel 1, and at the same time release a branch stent 10 in the aortic lumen 2 in parallel and axially. The distal...

AI Technical Summary

Problems solved by technology

[0004] The chimney technology is limited by the matching relationship between the stent graft 20 and the branch stent 10, and it is often impossible to avoid the gap 30 between the stents, such as Figure 1b As shown, this will lead to the occurrence of intraoperative endoleak, which will lead to the failure of the operation to achieve the desired effect

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