A kind of aortic dissection breach closure device

Abstract

The invention relates to the technical field of medical devices, and the invention provides an aortic dissection breach closure device, comprising a bare stent main body (1), a side branch outer sheath (2) and a side branch outer sheath (2) compressed into the side branch outer sheath (2). Blocking side branch (3); described blocking side branch (3) also includes spring coil (4) and spring coil microvilli (5) or described blocking side branch (3) also includes steel wire (6) and spongy plugs (7). The occluded side branch of the present invention is fixed at the crack of the interlayer and effectively seals the crack, prevents blood flow from entering the false lumen, and induces thrombus in the false lumen to organize and absorb.

Description

Technical field [0001] The invention relates to the technical field of medical devices, and is particularly applied to a device for blocking aortic dissection cracks. Background technique [0002] Aortic dissection (aortic dissection) means that the blood in the aortic lumen enters the aortic media from the aortic intima cleft, separates the media, and expands along the long axis of the aorta to form a true and false two-lumen aorta A pathological change. The main hazard is that the direct rupture of the false lumen or the rupture after the formation of an aneurysm causes massive hemorrhage and death, and during the formation of the dissection, the formation of the dissection can easily interrupt the blood supply of important branches of the aorta, causing severe ischemia and even serious organs. Loss of function, causing serious complications or death. [0003] With the development of science and technology, the development of new materials and the innovation of micro-processing...

AI Technical Summary

Problems solved by technology

However, this invention also has its drawbacks: firstly, the invention does not mention any means of fixing the rip occluder

At the breach of aortic dissection, high-speed blood flow flows from the true lumen through the breach into the false lumen. If the occluder cannot be effectively anchored at the breach, it is very likely that the occluder will be rushed into the false lumen by the blood flow, and its sharp The tip may cut through the wall of the false lumen and cause it to rupture, and the patient may die due to hemorrhagic shock in a short period of time; secondly, the occluder proposed by this invention is released and expanded in the false lumen, and the sandwiched false lumen The wall is only a thin layer of medial and adventitia of the aortic wall, and dilation in the false lumen itself has a certain risk of bursting the false lumen

Therefore, although this invention proposes the idea of ​​targeting the closure of the dissection gap, there are obvious design deficiencies in clinical application.

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