Brain protection filter assembly

Abstract

The invention relates to the technical field of medical instruments, in particular to a brain protection filter assembly which comprises a first frame body and a second frame body connected with the first frame body, and the second frame body is provided with a first connecting body used for connecting and positioning when the brain protection filter assembly is recycled. According to the brain protection filter assembly, the head-arm trunk artery, the left common carotid artery and the left subclavian artery are covered at the same time through the first frame body and the second frame body, the comprehensiveness of the protection range is guaranteed, and in addition, free recovery of the brain protection filter assembly after long-time storage in the body of a patient after an operation can be achieved through the first connecting body arranged on the second frame body; the foreign matter capturing time is prolonged, and the cerebral apoplexy prevention efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a brain protection filter assembly. Background technique [0002] With the gradual advancement of the development of TAVR and the increasing number of operations, some postoperative complications have gradually emerged, including the problem of new strokes after TAVR. Previous studies have shown that the incidence of symptomatic new strokes after TAVR is 2% to 5%, but previous statistics are mostly data on strokes that cause symptoms, larger infarct size, or severe and fatal strokes. The incidence of new types of ischemic brain injury after TAVR is higher, reaching 80% to 90%. Despite the continuous development of TAVR technology and the continuous improvement of surgical experience, the problem of new stroke after TAVR has not been effectively solved. [0003] New strokes after TAVR may be related to the loss of calcified material on the aortic valve during catheter or...

AI Technical Summary

Problems solved by technology

Despite the continuous development of TAVR technology and continuous improvement of surgical experience, the problem of new stroke after TAVR has not been effectively resolved

[0005] 1. The aortic arch cannot be completely covered, and the brachiocephalic trunk and left common carotid artery are implanted, leaving the left subclavian artery (branches including the vertebral artery) accounting for about 10% of cerebral perfusion unprotected;

[0006] 2. The device is unstable in the aorta and prone to deviation after blood flow impact;

[0007] 3. It cannot effectively protect the plaque on the aortic wall from falling off;

[0008] 4. Intraarterial manipulations may promote vascular injury, leading to dissection, arterial thrombosis, or embolism;

[0009] 5. Failure to effectively catch the thrombus;

[0010] 6. Postoperative thrombus may occur after the operation, and the device cannot be effectively recovered after being stored in the body for a certain period of time

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