Auto-developing electrostatic spinning stent and preparation method thereof

Abstract

The invention discloses an auto-developing electrostatic spinning stent. The stent comprises a stent body, a developing layer, a spinning layer and a protective layer; the stent body comprises two symmetrically arranged support rings and a support strip connected between the two support rings, the developing layer is arranged on the surface of the support strip, the spinning layer is wrapped around the outer side wall of the stent body, and the outer side of the spinning layer is coated with a drug carrying layer. A preparation method comprises the steps of (a) engraving a pipe through a laser; (b) preparing a mixed developing solution to prepare the developing layer; (c) spraying the spinning layer onto the outer side wall of the stent body; (d) performing ultrasonic atomization sprayingto prepare the protective layer and conducting drying. The spinning layer in the stent body provides a radial supporting force for the stent body, so that the stent always has a supporting force withcertain strength, and the treatment efficiency of the stent is improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a self-image electrospinning support and a preparation method thereof. Background technique [0002] Vascular stents are used to treat diseases such as vascular stenosis. Common vascular stents are mainly made of metal or polymer. Metal stents can be visualized under X-rays to facilitate detection of vascular stents, but metal stents are non-degradable and limit the normal pulsation of blood vessels; Degradable polymer stent overcomes this problem, but the polymer stent cannot be developed under X-ray. The existing development method is to add a development ring to the polymer stent or to coat the development layer, so that the polymer stent has the development function. However, the developing ring can only show the positions of the two ends of the stent, and cannot show the shape of the stent very well, which brings certain difficulties to the later follow-...

AI Technical Summary

Problems solved by technology

[0002] Vascular stents are used to treat diseases such as vascular stenosis. Common vascular stents are mainly made of metal or polymer. Metal stents can be visualized under X-rays to facilitate detection of vascular stents, but metal stents are non-degradable and limit the normal pulsation of blood vessels; Degradable polymer stent overcomes this problem, but the polymer stent cannot be developed under X-ray. The existing development method is to add a development ring to the polymer stent or to coat the development layer, so that the polymer stent has the development function of

However, the developing ring can only show the positions of the two ends of the stent, and cannot show the shape of the stent very well, which brings certain difficulties to the later follow-up observation

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