Far-end protective umbrella system

Abstract

The invention relates to a far-end protective umbrella system. The far-end protective umbrella system comprises a conveying sheathing canal and a blood vessel far-end protector arranged in the conveying sheathing canal; the blood vessel far-end protector comprises a far-end spring, a far-end guide wire, a flexible corrugated pipe and a near-end guide wire which are connected in sequence, an anti-unwinding wire arranged in the length direction of the flexible corrugated pipe is arranged in the flexible corrugated pipe and fixed in the flexible corrugated pipe, and the hardness of the far-end guide wire is smaller than that of the near-end guide wire. A plurality of annular flexible unfolding elastic sheets are distributed on the outer wall of the flexible corrugated pipe; the flexible corrugated pipe is sleeved with a conical net basket with an opening in the bottom face, the conical end of the net basket is connected with the far-end guide wire, and any point on the circumference of the opening end of the net basket is connected with the near-end guide wire. The far-end protective umbrella system can solve the problems that in the prior art, thrombus with the too large size is gathered to the narrow position of the woven net basket, the mesh basket is prone to deformation, the interception effect of the net basket is affected, excessive large thrombus blocks are accumulated at the narrow position of the net basket, and recycling of the net basket is affected.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a remote protective umbrella system. Background technique [0002] Carotid angioplasty and stent implantation is an interventional treatment method that uses balloon catheters, stents and other devices to eliminate or reduce carotid artery stenosis and thrombus, and improve the blood perfusion of organs in the neck blood supply area. Due to its minimally invasive advantages, it has developed rapidly, especially in China, where the popularity of carotid artery stenting (CAS) is relatively wide, even surpassing that of carotid endarterectomy (CEA). [0003] During carotid artery surgery, plaque or emboli usually fall off, which can easily cause infarction of distal blood vessels. Patent CN201595959U provides an embolism protector for cerebrovascular protection, which has an umbrella and can effectively capture Thrombosis can effectively protect cerebral blood vessels d...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a remote protection umbrella system, through the design of the remote protection umbrella system to solve the problem in the prior art that if there are too many thrombi or the volume is too large, they will gather in the narrow part of the weaving net basket, which will easily cause the net basket Deformation will affect the interception effect of the basket, and excessive large thrombus will accumulate in the narrow part of the basket, which will affect the recovery of the basket

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