Self-expansion medical stent for magnetic control drug delivery

CN223068658UActive Publication Date: 2025-07-08THE THIRD AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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Patent Information

Application Number
CN202421523185.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-01
Publication Date
2025-07-08
Estimated Expiration
2034-07-01

AI Technical Summary

Technical Problem

Existing drug-eluting stents and drug-coated stents cannot effectively control the time and dosage of drug sustained-release medication, resulting in low drug utilization and inability to handle recurrence in the affected area.

Method used

The self-expanded medical stent with magnetron administration is adopted to control the drug's exudation through the movement of the magnetostrictive film, combine with the hydrogel drug-loading coating to achieve sustained release of the drug, and use an external magnetic field to regulate the release time and dosage of the drug.

Benefits of technology

It achieves precise controlled release of drugs, improves the utilization rate and treatment effect of drugs, reduces the risk of recurrence of the disease in the affected area, and enhances the adhesion of the stent in the affected area and the uniform distribution of the drug solution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a self-expansion medical stent for magnetic control drug delivery. The self-expansion medical stent comprises a stent main body, a polymer nano semi-permeable membrane, a magnetostrictive film and a hydrogel drug-loaded coating, the self-expansion medical stent has a drug delivery state and a non-drug delivery state: in the drug delivery state, the axial length of the magnetostrictive film is equal to the axial length of the stent main body, and the drug delivery pores are round and are aligned with the round open pores in the stent main body; in a non-drug delivery state, the axial length of the magnetostrictive film is smaller than that of the stent main body, and the drug delivery pores are elliptical and staggered from the circular open pores in the stent main body. According to the self-expansion type medical support for magnetic control drug delivery, controllable slow-release drug delivery of the self-expansion type support can be controlled in vitro, the drug delivery time and the drug delivery dosage can be accurately controlled, and the treatment process of diseases of a patient can be accelerated.
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