Woven equipment and method for making a double-end closed loop dense mesh stent

By using a double-headed closed-loop dense mesh support weaving machine to weave a double-headed closed-loop dense mesh support in one go, the problems of high manufacturing difficulty and the risk of wire splicing point in the existing technology have been solved, and efficient and stable support production has been achieved.

CN118360723BActive Publication Date: 2026-05-01MICROPORT NEUROTECH SHANGHAI
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Patent Information

Application Number
CN202310089940.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-19
Publication Date
2026-05-01
Estimated Expiration
2043-01-19

AI Technical Summary

Technical Problem

Most existing flow-directing mesh stents have an open-loop structure at the tip. The re-braiding of the braided wires increases the difficulty and risk of manufacturing, and there is also the risk of failure of the connection at the wire joint, which affects the stent's performance.

Method used

The weaving equipment using a double-headed closed-loop dense mesh support achieves one-time weaving of the double-headed closed-loop dense mesh support through the coordinated movement of the turntable and the weaving mandrel. This avoids the back-weaving process and the setting of the yarn dotting point, and simplifies the structure of the weaving mandrel and the complexity of the processing.

Benefits of technology

It reduces manufacturing difficulty, improves yield and efficiency, avoids the risk of failure of parallel wire connection, ensures stable stent performance, and reduces costs.

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Abstract

The application provides a braiding device and a braiding method for manufacturing a double-head closed-loop dense net support. The braiding device comprises a rotating disc, a spindle assembly with a plurality of spindles, the spindle assembly being mounted on the rotating disc, the plurality of spindles being arranged in sequence along the circumference of the rotating disc, every two spindles being symmetrical about the center of the rotating disc, and any two symmetrical spindles being used for sleeving a braiding ring so that the centers of all the braiding rings intersect at the center of the rotating disc; and a braiding core rod coaxially arranged with the rotating disc, the braiding core rod being movable in the axial direction of the rotating disc, the braiding core rod penetrating the center intersection area of the braiding ring and making the center intersection area located at a braiding starting point of the braiding core rod, and the braiding core rod tensioning all the braiding rings at the braiding starting point. The braiding device can braiding the double-head closed-loop dense net support on the braiding core rod at one time through the movement of all the spindles along the circumference of the rotating disc and the movement of the braiding core rod along the axial direction of the rotating disc, thereby effectively reducing the manufacturing difficulty of the double-head closed-loop dense net support and improving the manufacturing yield.
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