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Covered stent system

A technology of covered stents and metal stents, which is applied in the field of medical devices, can solve problems such as increasing the difficulty of surgical operations, and achieve the effects of avoiding related complications, facilitating accurate positioning, and ensuring blood perfusion

Pending Publication Date: 2022-07-01
SHANGHAI MICROPORT ENDOVASCULAR MEDTECH (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a stent-graft system for the problem of increasing the difficulty of operation due to the implantation of branched stent-grafts

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0075] This embodiment provides a stent-graft system for treating abdominal aortic aneurysm A involving celiac trunk artery A1, superior mesenteric artery A2, and renal artery A3 (see Figure 4 ). like image 3 , Figure 5 As shown, the stent-graft 100 includes a proximal stent-graft 100a, an intermediate stent-graft 100b and a distal-end stent-graft 100c connected in sequence, and the intermediate stent-graft 100b has the smallest inner diameter; the proximal-end stent-graft 100a and the intermediate stent-graft The two first windows at the junction of the stent 100b are respectively installed with first embedded branches 140 in the axial direction, and the two second windows at the junction of the intermediate stent-graft 100b and the distal stent-graft 100c are respectively installed with the first embedded branch 140 . The two embedded branches 150, the two first windows are circumferentially distributed side by side on the same side of the stent graft 100, and the dista...

Embodiment 2

[0079] This embodiment provides a stent-graft system for treating abdominal aortic aneurysm A involving celiac trunk artery A1, superior mesenteric artery A2, and renal artery A3 (see Figure 4 ). like Figure 11 As shown, the stent-graft 100 sequentially includes a proximal-end stent-graft 100a, an intermediate stent-graft 100b and a distal-end stent-graft 100c from the proximal end to the distal end, and the inner diameter of the intermediate stent-graft 100b is the smallest; Figure 10As shown, the two first windows at the junction of the proximal stent-graft 100a and the intermediate stent-graft 100b are respectively installed with first embedded branches 140 in the axial direction, the intermediate stent-graft 100b and the distal stent-graft 100c The two second windows at the junction of the two second windows are respectively installed with second embedded branches 150. The distance between the two first windows in the axial direction of the stent graft 100 is 8 mm and ...

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Abstract

The invention relates to a covered stent system. The covered stent system comprises a covered stent and a diameter restraining piece arranged on the covered stent. The diameter restraining piece is used for restraining the covered stent and can release the covered stent; the inner diameter of the covered stent after being bound is smaller than the inner diameter of the covered stent after being released, and the covered stent after being bound is provided with a through inner cavity. Due to the fact that the diameter restraining piece can restrain the covered stent, after the covered stent system is guided into an abdominal aortic aneurysm diseased region, the covered stent is not attached to a blood vessel; the covered stent can move between the near end and the far end after being bound by the diameter restraining piece until the first window of the covered stent faces the celiac trunk artery and / or the superior mesenteric artery and the second window of the covered stent faces the renal artery, the covered stent can still be adjusted in the process that the branch covered stent is guided in to establish a blood flow channel, and accurate positioning is facilitated; the bound covered stent is provided with a through inner cavity, blood flow can smoothly pass through the through inner cavity, and blood flow perfusion of the inner cavity of the covered stent is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular to a stent-graft system. Background technique [0002] Abdominal aortic aneurysm (AAA, Abdominal Aortic Aneurysm) is a common aortic disease in vascular surgery, which refers to the local pathological expansion of the abdominal aorta, exceeding 50% of the normal vascular diameter. Once the tumor ruptures, the fatality rate can be as high as 78% to 94%, which seriously endangers the life safety of patients. Due to the high difficulty and large surgical trauma of traditional surgical treatment, endovascular repair using abdominal aortic stent-graft has been widely used. Among them, endovascular repair refers to the purpose of treating abdominal aortic aneurysm by delivering a stent-graft to the lesion site to establish a new blood flow channel in the tumor cavity, thereby isolating the impact of abdominal aortic hypertension blood flow on the tumor wall. a repair tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/07A61F2/966A61F2/97
CPCA61F2/07A61F2/966A61F2/97A61F2250/0098
Inventor 王韶霞舒畅朱清屠春霖陈伊璐
Owner SHANGHAI MICROPORT ENDOVASCULAR MEDTECH (GRP) CO LTD
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