Stentriever device for removing occlusive clots from blood vessels and methods thereof

CN112890914BActive Publication Date: 2026-07-07NEURAVI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NEURAVI
Filing Date
2020-12-03
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing stent thrombectomy devices are prone to damaging the vessel wall or failing to effectively capture different types of clots when grasping occluded clots, especially at bifurcation or trifurcation points, and are difficult to protect fragile clot fragments.

Method used

A stent thrombectomy device was designed, comprising a membrane cover and an expandable clot junction, which improves clot clamping through guided fluid aspiration and negative pressure technology, and provides an orifice in the distal junction to protect fragile clot fragments.

Benefits of technology

It improves the clamping effect on different types of clots, reduces vascular trauma, enhances the protection of fragile clot fragments, and ensures that the clot does not detach from the device during removal.

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Abstract

The present invention is entitled "Stentriever device for removing occlusive clot from a blood vessel and methods thereof." The devices described herein include a stentriever for removing occlusive clot. The stentriever can include a membrane covering on the proximal end sized to form a seal with the tip of an intermediate catheter. The clot engaging portion and / or distal engaging portion of the stentriever can also include a full or partial membrane covering to control the direction of suction and / or the area of the thrombus or clot where suction is applied. The membrane can be used to direct suction so as to pull the clot deeper into the clot engaging portion of the stentriever, improving the grip on the clot. The design can also increase the effectiveness of clot fragment protection for friable clots by providing holes and / or clot cells in the distal engaging portion.
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