Biodegradable magnetic control PVA micro-motor stent and preparation method and use of biodegradable magnetic control PVA micro-motor stent

Abstract

The invention discloses a biodegradable magnetic control PVA micro-motor stent and a preparation method and use of the biodegradable magnetic control PVA micro-motor stent. A magnetic control PVA material is obtained by mixing and cross-linking polyvinyl alcohol, magnetic particles, a cross-linking agent and water. An intravascular stent prepared from the material can adopt ultrasonic waves to trigger shape memory, an adjusting process and an implantation process of a material formula can be simplified in cooperation with a movement performance of a magnetic drive motor, the intravascular stent is controlled to move in vivo to reach a target position, a fixed-point implantation is not needed, invasiveness and implantation risks are further reduced, and the stent better meets actual application requirements.

Description

technical field [0001] The invention belongs to the field of biological materials, and in particular relates to a biodegradable magnetically controlled PVA micro-motor support and a preparation method and application thereof. Background technique [0002] Micromotor is an artificial power device with excellent motion performance and precise navigation performance. It has broad application prospects in the biomedical field. In order to make micromotors more widely used in biomedical fields, improve the performance of micromotor systems Biocompatibility has important research significance. [0003] Vascular stent implantation is an effective medical intervention for the treatment of vascular stenosis-related diseases. However, in the prior art, vascular stents prepared from traditional materials have problems such as insufficient biocompatibility and the need to introduce additional shape expansion devices. Moreover, in order to ensure The accuracy of implantation requires hi...

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Problems solved by technology

[0003] Vascular stent implantation is an effective medical intervention for the treatment of vascular stenosis-related diseases. However, in the prior art, vascular stents prepared from traditional materials have problems such as insufficient biocompatibility and the need to introduce additional shape expansion devices. Moreover, in order to ensure The accuracy of implantation requires highly invasive treatment methods, and the existence of these problems can easily cause restenosis and arterial damage, thereby reducing the effectiveness of treatment

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