Intracranial artery plaque recovery cutting stent

Abstract

The invention discloses an intracranial artery plaque recovery cutting stent, and relates to the technical field of medical instruments. The intracranial artery plaque recovery cutting stent comprisesa stent body, an adjusting pull tube, an adjusting pull wire, an expanding and supporting assembly and a plaque cutting assembly, wherein the stent body is internally provided with an adjusting cavity; the front end of the stent body is provided with a mounting step; the adjusting cavity is internally provided with a driving assembly; a connector is arranged at the front end of the adjusting pullwire; the plaque cutting assembly comprises a cutting net, an expanding and supporting air bag and two expanding and supporting nets; two ends of the cutting net are fixedly connected with the adjusting pull tube and a connecting block respectively; the other ends of the two expanding and supporting nets are fixedly connected with the adjusting pull wire; the expanding and supporting air bag is annular and is mounted in the middle of the adjusting pull wire; and the expanding and supporting air bag is located between the two expanding and supporting nets. Radial cutting force of the cutting net on thrombus plaques is guaranteed and control is facilitated, so that the thrombus plaque cleaning effect is improved; and the stent body can be effectively fixed through the expanding and supporting assembly, so that secondary injury to a patient is avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a stent for recovery and cutting of intracranial artery plaque. Background technique [0002] Intracranial artery plaque recovery and cutting stent is a common medical device for the treatment of intracranial thrombosis, mainly through the elastic cutting mesh to cut and recover the thrombus plate. [0003] Chinese Patent No. CN109350180A discloses a stent-like thrombus remover, a stent body; the stent body includes a distal structure, a middle structure, and a proximal structure; the distal structure, the middle structure, and the proximal structure are sequentially connected together; the distal The structure is formed as a first cage, and the circumference of the first cage includes a plurality of first meshes; the distal structure is used to pass through the thrombus and remain on the outside of the thrombus; the diameter of the distal structure is larger than that of...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a stent for recovery and cutting of intracranial artery plaque to solve the technical problems in the prior art that the radial cutting force of the stent for recovery and cutting of intracranial artery plaque cannot be controlled and the cutting effect is not good

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