Blood intra-cavity support

Abstract

The invention discloses a blood intra-cavity support which comprises a tubular support body. Through holes communicated with the inner side and the outer side are formed in the side wall of the support body. The hole axes of the through holes incline to the axial end of the support body. According to the blood intra-cavity support, the through holes communicated with the inner side and the outer side are formed in the side wall of the support body and the blood can be kept circulated inside and outside the support in a branch blood vessel; meanwhile, the hole axes of the through holes incline to the axial end of the support body, the blood intra-cavity support is placed in the mode that the inner ends of the through holes incline in the blood flow direction, the blood is prevented from directly impacting the blood vessel intima, the blood is promoted to flow in the support in a layered mode, vortexes are not generated in the through holes, damage caused by blood flow to the blood vessel intima is greatly reduced, and the blood vessel intima is well protected. Meanwhile, due to the fact that most of the blood vessel intima is not covered at the portion where the blood intra-cavity support is implanted, partial blood vessel endothelium still maintains the functions, interference caused by the support in the functions of the endothelium is reduced, and the good treatment effect is achieved.

Description

technical field [0001] The invention relates to a medical device, in particular to a stent in a blood vessel cavity. Background technique [0002] Vascular stents are placed in diseased blood vessels to achieve the purpose of supporting stenotic and occluded blood vessels, expanding the true lumen of blood vessels, isolating lesions, reducing elastic retraction and reshaping of blood vessels, and maintaining smooth blood flow in the lumen. The minimally invasive interventional therapy technology using the principle of intracavitary isolation uses a delivery system with a small diameter to deliver the compressed stent with support to the position of the vascular lesion. After accurate positioning, it is released and braced. When opening diseased blood vessels, stents generally include covered stents and bare stents. Most of the bare stents in the prior art are wire mesh structures, and the blood flow at the mesh still has a large impact on the intima of the vessel. The stent...

AI Technical Summary

Problems solved by technology

The minimally invasive interventional therapy technology using the principle of intracavitary isolation uses a delivery system with a small diameter to deliver the compressed stent with support to the position of the vascular lesion. After accurate positioning, it is released and braced. When opening diseased blood vessels, stents generally include covered stents and bare stents. Most of the bare stents in the prior art are wire mesh structures, and the blood flow at the mesh still has a large impact on the intima of the vessel. However, there are difficult problems such as blocking branch vessels, endoleaks, and destroying local vascular endothelial functions. At present, there is no effective and convenient technology to solve these problems.

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