Intravascular stent

By designing and adjusting the distance between the first sub-stent and the second sub-stent, and using the elastic deformation of the flexible part to adjust the metal coverage rate, the problems of spring coil displacement and loose coverage in existing stents when treating complex aneurysms are solved, the embolization effect of the aneurysm and the fit of the stent to the blood vessel are improved, and the risk of complications is reduced.

CN120585532AActive Publication Date: 2025-09-05BEIJING JIUSHI SHENKANG MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202511102810.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2025-09-05
Estimated Expiration
2045-08-07

AI Technical Summary

Technical Problem

When existing stents are used to treat complex aneurysms, there is a risk of coil migration, loose metal coverage leading to aneurysm recurrence, and high metal coverage may lead to the risk of intravascular stenosis and thrombosis.

Method used

An intravascular stent is designed, comprising a first sub-stent, a second sub-stent and a flexible part. By adjusting the distance between the two, the flexible part undergoes elastic deformation, the metal coverage is adjusted, and the support and blocking effect of the spring coil is improved.

Benefits of technology

It enhances the support for the spring coil inside the aneurysm cavity, increases the embolization rate of the aneurysm cavity, reduces the risk of aneurysm recurrence, and improves the fit between the stent and the inner wall of the blood vessel, reducing the risk of stenosis and thrombosis in the blood vessel.

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Abstract

The invention particularly relates to an intravascular stent which comprises a first sub-stent and a second sub-stent which are each of a mesh tubular structure formed by weaving a plurality of weaving wires. The first sub-bracket and the second sub-bracket are coaxially arranged; one end of the flexible part is connected with one end of the first sub-bracket, and the other end of the flexible part is connected with one end of the second sub-bracket; the flexible part is of a spiral structure or a variable-diameter spiral structure. When the flexible part is of the variable-diameter spiral structure, the outer diameter of the flexible part is gradually increased and then gradually decreased from the direction of the near end to the direction of the far end. By adjusting the distance between the first sub-support and the second sub-support, the flexible part is elastically deformed, and the metal coverage rate between the first sub-support and the second sub-support is adjusted.
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Citation Information

Patent Citations

  • Intratumoral sealing stent

    CN115429372B

  • Dense net support

    CN119587100A

  • Intravascular stent

    CN113017753A

  • Knitted mesh stent and method for manufacturing woven mesh stent

    CN117426915A

  • Adjustable dense net support

    CN119157674A