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Intravascular deliverable stent for reinforcement of vascular abnormalities

一种血管、畸形的技术，应用在独特支架或移植物领域，能够解决伤害内皮和狭窄损伤部位等问题

Inactive Publication Date: 2008-08-06
AGA MEDICAL CORP MS US
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] Attempts to anchor prior art stents after implantation to prevent unwanted movement, currently employing vessel wall adhesive hooks believed to injure the endothelium and stenotic lesion sites

Method used

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  • Intravascular deliverable stent for reinforcement of vascular abnormalities
  • Intravascular deliverable stent for reinforcement of vascular abnormalities
  • Intravascular deliverable stent for reinforcement of vascular abnormalities

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0043] Referring to Fig. 1, numeral 10 indicates a stent / graft structure of a preferred embodiment of the present invention. Stent / graft 10 is shown deployed in a segment of abdominal aorta 12 containing an aneurysm 14 . At its lower end the abdominal aorta 12 branches into left and right iliac arteries 16 and 18 . Figure 1 also shows renal arteries 20 and 22 leading to the kidneys (not shown).

[0044] Stent / graft 10 comprises an innermost tubular member 23 of length L1, and at least one further tubular member 26 of length L2, both structures having similar predetermined diameters. The overall length of L1 of the stent / graft is 12-16 cm, preferably 14 cm; the length of L2 is 8-12 cm, preferably 10 cm.

[0045] The innermost tubular member comprises a first plurality of braided wire strands 24, preferably a shape memory alloy such as Nitinol. The braid comprises an innermost tubular member 23 having a predetermined weft density and pick and pitch to define a sufficiently la...

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PUM

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Abstract

A catheter deliverable stent / graft especially designed to be used in a minimally invasive surgical procedure for treating a variety of vascular conditions such as aneurysms, stenotic lesions and saphenous vein grafts, comprises an innermost tubular structure and at least one further tubular member in coaxial arrangement. In one embodiment, the innermost tubular structure is of a length (L 1 ) and is formed by braiding a relatively few strands of highly elastic metallic alloy. The pick and pitch of the braid are such as to provide relative large fenestrations in the tubular wall that permit blood flow through the wall and provide the primary radial support structure. A portion of the innermost tubular structure of a length (L 1 ) is surrounded by a further braided tubular structure having relatively many strands that substantially inhibit blood flow through the fenestrations of the innermost tubular structure.

Description

Background of the invention [0001] I. CROSS-REFERENCE TO RELATED APPLICATIONS : This application is a continuation-in-part of co-pending application number 11 / 331.640 filed January 13, 2006, the contents of which are incorporated herein by reference for any purpose. [0002] II. Field of Invention: The present invention generally relates to intravascularly deliverable stents or grafts. In particular, the present invention relates to unique stents or grafts for the treatment of aneurysms, injuries and saphenous vein grafts by repair, in addition to bypassing or lining blood vessels. While it is emphasized that such stents or grafts are specifically designed for the treatment of aneurysms, particularly iliac aneurysms and abdominal aortic aneurysms (AAA), applications for saphenous vein grafts (SVG), dialysis grafts, and carotid artery grafts are also disclosed. other implementations. [0003] III. DISCUSSION OF PRIOR ART : An aortic aneurysm is a weakened area in the aor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61F2/06A61L31/02A61F2/90
CPCA61F2220/0041A61F2/90A61F2002/823A61F2/07A61F2250/0037A61F2250/0015A61F2220/0075A61F2250/0023A61F2210/0076A61F2/852A61F2210/0014A61F2220/0008A61F2/82A61F2002/075A61F2/86A61L27/04A61M25/01
Inventor 库尔特·安姆普拉兹J·C·奥斯兰德P·卢梭X·古
Owner AGA MEDICAL CORP MS US
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