Segmented Bolt Retrieval Bracket

Abstract

The present invention proposes a segmented thrombectomy bracket, which is in the shape of a tube with a plurality of hollowed-out meshes on its peripheral surface; it includes a proximal section, a middle section, and a distal section; the proximal section forms a tapered opening and is connected with a push wire Connected; the middle section is formed by connecting a plurality of segments end to end; at least one level of X-shaped connection parts is formed between adjacent segments, and each level of X-shaped connection parts includes two X-shaped connection parts; each level of X-shaped connection parts The two X-shaped connecting parts in the X-shaped connecting parts are facing each other. The design of the symmetrical X-shaped connection part of the present invention and the left-right and up-down symmetrical structures enable the stent to maintain a segmented structure in which each segment is relatively opposed, retaining the strong ability of the segmented stent to capture thrombus and tortuous blood vessels. Advantages, it increases the stability of the stent structure and the stability of the thrombus-catching effect, and is easier for the operator to manipulate.

Description

technical field [0001] The invention relates to an intravascular interventional medical device, in particular to a segmented thrombectomy bracket. Background technique [0002] Acute ischemic stroke is a cerebrovascular disease that endangers human health. Thrombus congestion in blood vessels leads to brain ischemia. Intravenous thrombolysis is the standard of care for acute ischemic stroke. However, when large intracranial vessels such as the M1 segment of the middle cerebral artery are occluded, the probability of recanalization through intravenous thrombolysis is very low. In recent years, the method of intravenous thrombolysis combined with endovascular intervention has been proved to be more effective in achieving effective recanalization than intravenous thrombolysis alone. Among them, an effective endovascular intervention is to release a thrombus retrieval stent at the embolization site, which can capture the thrombus and pull it back into the catheter, thereby ach...

AI Technical Summary

Problems solved by technology

However, there are few connecting parts between the segments of the stent, resulting in an unstable stent structure. When the complex anatomical structure or tortuous blood vessels are released and recovered, the stent is prone to discounts, twists, etc., which increases the difficulty of manipulating the stent. At the same time, Since the segmented structure is symmetrical in the left-right direction and asymmetrical in the vertical direction, the ability of the stent to capture thrombus in the vertical direction is different. If the lower side of the stent is mainly in contact with the thrombus after release, and the radial gap faces the vessel wall, this is impossible. The thrombus is well accommodated, which increases the instability of the thrombus removal effect

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