Endovascular repair graft for treating aortic dissection false lumen

A technology for aortic dissection and grafts, which is applied in the field of medical devices, can solve the problems of being unable to block the blood flow of the false lumen, and achieve the effects of increasing the difficulty of blood flow in and out, blocking the blood flow of the false lumen, and accelerating the internal embolization

Pending Publication Date: 2018-01-12
SHANGHAI CHANGHAI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The utility model is to carry a plugging side branch on the basis of a bare stent main body. The bare stent not only plays the role of carrier, but also plays the role of shaping the true cavity. The plugging side branch is fixed at the gap of the interlayer and Effectively seal the gap, p

Method used

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  • Endovascular repair graft for treating aortic dissection false lumen
  • Endovascular repair graft for treating aortic dissection false lumen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , 2 The shown endoluminal repair graft for treating the false lumen of aortic dissection is characterized in that it consists of a blocking member and a delivery device, wherein:

[0035] The body 1 of the blocking member is a cylindrical structure woven by wire mesh, and the surface of the cylindrical structure is covered with a film 2 so that the blocking member forms a closed cavity.

[0036] This occluder is different from the existing occluder repair device placed in the aortic vessel to precisely cover the breach, but a closed stent graft that fully covers multiple or even all breaches , at the same time, because both ends in the axial direction are covered with membranes, it is a closed cylinder itself, and its shape and mechanics are strictly suitable for the false cavity, which can basically or even completely fill the false cavity, increasing the difficulty of blood flow in and out, Blocking the blood flow in the false lumen and accelerating t...

Embodiment 2

[0038] The rest is the same as that of Embodiment 1, and a spiral concave drug-carrying pipeline is formed on the film outside the body of the blocking member. A spiral concave drug-carrying channel can be formed on the outer surface of the occluder, and drugs for treatment are placed in the drug-carrying channel, for example, coagulant-promoting drugs such as thrombin and growth-promoting drugs such as fibroblast growth factor are loaded. After the occluder is sent into the false lumen for release and fixed, the drug in the drug-loaded pipeline starts to release the drug, achieving quantitative and targeted sustained release.

Embodiment 3

[0040] An endoluminal repair graft for treating the false lumen of aortic dissection, the rest are the same as in Example 2, the models of the plugging parts have a diameter of 10-50mm, with a difference of 5mm, and a length of 100-300mm, with a difference of 50mm. Difference.

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Abstract

The invention relates to the technical field of medical instruments, in particular to an endovascular repair graft for treating the aortic dissection false lumen. The endovascular repair graft is composed of an occluding part and a conveying device, wherein the body of the occluding part is of a cylinder structure formed by knitting wire mesh, and the body is covered with membranes, so that the occluding part forms a closed cavity. The endovascular repair graft can be stably fixed to the dissection false lumen and effectively occlude slits to cut off false lumen blood flow. Different from an existing occluder repair device which is placed in the aorta to precisely cover a slit, the occluding part is a closed stent graft and completely covers multiple or even all slits; meanwhile, as both ends, in the axial direction, of the occluding part are covered with the membranes, the occluding part is a closed cylinder, the shape and mechanical properties are strictly suitable for the false lumen, the occluding part can basically or even completely fill the false lumen, it is more difficult for blood to flow in or flow out, the false lumen blood flow is cut off, and thrombosis in the false lumen is accelerated.

Description

technical field [0001] The invention relates to the technical field of medical instruments, and relates to an endoluminal repair graft for treating aortic dissection false lumen. Background technique [0002] Aortic dissection (AD) refers to the rupture of the aortic intima due to various reasons. The long axis of the aorta expands proximally and distally, thus forming a pathological change in which the aorta has two true and false lumens. Its onset is sudden and harmful, and the torn false lumen vessel wall is weak, which may form an aneurysm or directly rupture and cause massive hemorrhage to death. Severe ischemic necrosis, causing serious complications such as myocardial infarction, cerebral infarction or even death. [0003] At present, endovascular repair of aortic dissection has been carried out, that is, the minimally invasive method of percutaneous stent implantation is adopted, and a straight-type endoluminal graft is implanted in the true lumen of the blood vess...

Claims

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Application Information

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IPC IPC(8): A61F2/07A61F2/95
Inventor 冯睿刘军军景在平周建李逸明冯家烜李振江鲍贤豪李涛徐子依
Owner SHANGHAI CHANGHAI HOSPITAL
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