Sacculus conveyer

Abstract

The invention relates to the medical instrument field for restoring human body aorta in cavity, especially a saccule conveyer. At present, the saccule applied to clinical can completely block the aorta blood flow when the saccule is complete expanded, so that the saccule near-end pressure can raise and the saccule far-end pressure can reduce. The blood flow can generate stronger impact force to the saccule, at this point, because the saccule and a tectorial membrane frame is attached tightly, the saccule may drag the tectorial membrane frame to move towards the far end, so the serious bad results are generated. The main object of the invention is to provide a saccule conveyer, when the saccule is complete expanded and is attached tightly with tectorial membrane frame, the blood flow can not be blocked completely, a pressure difference between the saccule near end and the saccule far end can not be over large, the impact force of the blood to the saccule can be reduced. The stronger axial supporting force of a sheath tube can counteract the impact force of the blood flow to the saccule far end, so that the saccule can not drag the tectorial membrane frame downwards.

Description

technical field [0001] The invention relates to the field of medical devices for intraluminal repair of human aorta, in particular to a balloon delivery device. Background technique [0002] Endovascular repair of aortic disease is an emerging technology in recent years. Its applicable diseases include aortic dissection, aortic true aneurysm, aortic pseudoaneurysm, aortic ulcer and traumatic aortic rupture and other diseases. The principle is to cover the lesion in the aortic cavity with a stent graft by means of interventional therapy, as if adding a lining, so as to achieve the purpose of repairing the aortic lesion. Because traditional thoracotomy or membrane opening is avoided, the trauma suffered by patients is greatly reduced, and the mortality rate and incidence of complications are greatly reduced, but there are still some problems. For example, the metal skeleton of the covered stent is mostly memory alloy, and its anchoring in the aortic lesion depends on the rad...

AI Technical Summary

Problems solved by technology

At present, when the clinical balloon is fully inflated, the aortic blood flow is completely blocked. At this time, the pressure at the proximal end of the balloon will increase, and the pressure at the distal end of the balloon will decrease, and the blood flow will have a strong impact on the balloon. At this time, due to the tight fit between the balloon and the covered stent, the balloon may drag the covered stent to move distally, resulting in more serious adverse consequences

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