A branched stent-graft and a branched stent-graft system

A stent-graft and branch technology, applied in the field of medical devices, can solve the problems of shortening overlap, affecting the celiac trunk blood vessels, and having no anchoring function at the waist, so as to increase the adherence, ensure the anchoring force, and ensure The effect of adherence

Active Publication Date: 2021-07-02
SHANGHAI MICROPORT ENDOVASCULAR MEDTECH (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among the branched stents in these studies, some of the main stents did not leave space for the renal artery stent near the kidneys, which resulted in the risk of the renal artery stent being squeezed; The reserved position of the branch bracket is designed in a waisted form, and the waisted part has no anchoring function
That is, the disadvantage of the latter is that the anchoring area of ​​the multi-branched abdominal aortic stent-graft cannot be overlapped with the reserved position of the double-kidney branch stent, thereby shortening the anchoring area, resulting in unstable anchoring of the abdominal aortic stent-graft. Or in order to increase the anchoring effect of the abdominal aortic stent-graft, extend its anchoring area, and anchor the proximal end of the abdominal aortic stent-graft mainly on the celiac trunk vessel, thus increasing the structural complexity and surgical difficulty of the stent , and easily affect the celiac artery

Method used

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  • A branched stent-graft and a branched stent-graft system
  • A branched stent-graft and a branched stent-graft system
  • A branched stent-graft and a branched stent-graft system

Examples

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Comparison scheme
Effect test

Embodiment 1

[0051] This embodiment provides a kind of abdominal aortic stent graft, refer to figure 1 , figure 1 It is a schematic diagram of the abdominal aortic stent graft in Example 1 of the present invention. The abdominal aortic stent graft 100 includes a stent body 200 and a membrane 300 , and the membrane 300 covers a part of the stent body 200 . The stent body 200 is in the shape of a mesh tube. The stent body 200 includes a bare segment 400 and a covered segment 500 . The distal end of the bare segment 400 is connected to the proximal end of the covered segment 500 . The bare section 400 is used for anchoring the abdominal aortic stent graft 100 . The covering film 300 is wrapped on the covering film segment 500 . The covering segment 500 is used to isolate the aneurysm from the blood flow and allow the blood flow to flow through the abdominal aortic stent graft 100 . The covering section 500 includes an upper body section 510 , a window section 520 and a lower main body s...

Embodiment 2

[0081] The difference between this embodiment and the first embodiment is that, in this embodiment, the covering section 500 further includes a bifurcation section 590 . refer to Figure 8 , Figure 8 It is a schematic diagram of the abdominal aortic stent-graft in Embodiment 2 of the present invention, the covered section 500 further includes a bifurcated section 590, the proximal end of the bifurcated section 590 is connected to the distal end of the lower main body section 580, The bifurcated section 590 is divided into two tubular leg structures 591 from the proximal end to the distal end.

[0082] In this embodiment, the midpoint of the U-shaped groove 511 is set at 12 o'clock, the high kidney window 530 is at 14:30-15:30, and the low kidney window 540 is at 8:00-10:30.

[0083] In this embodiment, the bare section 400 has three barbs, and the three barbs are fixed on the bare section 400 by welding. The bare section 400 includes a stent ring, the stent ring is wavy, a...

Embodiment 3

[0087] This embodiment provides an abdominal aortic stent graft system, which includes a high kidney stent 600 and a low kidney stent 700 . refer to Figure 9 and Figure 10 , Figure 9 It is a schematic diagram of the abdominal aortic stent graft system in Example 3 of the present invention, Figure 10 It is a partial schematic diagram of the abdominal aortic stent graft system in Example 3 of the present invention, the high renal stent 600 is socketed with the high renal internal channel 560, and the low renal stent 700 is socketed with the low renal internal channel 570 socket.

[0088] Specifically, the high built-in kidney channel 560 is fixedly connected with the high kidney window 530 , and the low built-in kidney channel 570 is fixedly connected with the low kidney window 540 .

[0089] Since the high-kidney stent 600 and the low-kidney stent 700 can be sleeved in the high-kidney auxiliary stent 560 and the low-kidney auxiliary stent 570 respectively, the high-kidn...

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Abstract

The present invention provides an abdominal aortic stent-graft and an abdominal aortic stent-graft system, comprising a stent body and a membrane, the stent body includes a plurality of sequentially connected stent rings, and the membrane covers the stent On the main body; the branched stent-graft includes an upper body section, a fenestration section, and a lower main body section from the proximal end to the distal end, and the fenestration section is provided with at least one first branch window; the first branch window has a bracket frame, the stent frame is surrounded by two adjacent complete stent rings, and the covering film covered on the stent frame is provided with openings, and the openings are used to communicate with branch blood vessels, so The covering membrane within the range of the stent frame is sunken toward the inside of the stent. The abdominal aortic stent-graft and the abdominal aortic stent-graft system provided by the present invention can be used as the abdominal aortic stent-graft and the abdominal aortic stent-graft system for the interventional treatment of abdominal aortic aneurysms with a short neck neck, and can have Excellent anchoring stability.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a branched stent graft and a branched stent graft system. Background technique [0002] Abdominal aortic aneurysm is one of the deadliest and most difficult to treat vascular surgical diseases. Traditional surgical treatment is difficult and traumatic. Therefore, endovascular interventional treatment using abdominal aortic stent graft has been widely used in clinical treatment in recent years. In interventional therapy, the abdominal aortic stent graft is delivered to the abdominal aortic lesion through the femoral artery incision through the delivery system to protect the diseased blood vessel and repair the abdominal aortic lesion. [0003] At present, there are various types of abdominal aortic stent-grafts used in the interventional treatment of abdominal aortic aneurysms in the market, each product has its own characteristics, and the scope of indications is also di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/07
Inventor 邓筱娟严冬梅袁振宇朱清苗铮华
Owner SHANGHAI MICROPORT ENDOVASCULAR MEDTECH (GRP) CO LTD
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