Contraction hemostasis patch based on liquid crystal elastomer net-shaped lattice structure and preparation method of contraction hemostasis patch

Abstract

The invention provides a contraction hemostasis patch based on a liquid crystal elastomer net-shaped lattice structure and a preparation method of the contraction hemostasis patch. The contraction hemostasis patch is used for being attached to a wound on the skin and comprises a main body part, a dressing and a sensing part, wherein the main body part comprises a pre-stretched net-shaped lattice structure containing a liquid crystal elastomer material, the liquid crystal elastomer material has the capacity of deforming when the temperature reaches the heat-induced deformation temperature, and when the contraction hemostasis patch is attached to the wound, the net-shaped lattice structure can be heated to contract the wound; the dressing is arranged on the main body part and is used for pharmacologically healing the wound; and the sensing part is arranged on the main body part and used for monitoring the state of the wound, and the sensing part is arranged on one side of the net-shaped lattice structure. The preparation method of the contraction hemostasis patch comprises the following steps: processing the net-shaped lattice structure containing the liquid crystal elastomer material; irradiating the net-shaped lattice structure by ultraviolet rays, so that the liquid crystal elastomer material is secondarily crosslinked; and stretching the net-shaped lattice structure irradiated by the ultraviolet rays to obtain the main body part.

Description

technical field [0001] The present application relates to the technical field of medical hemostatic patches, in particular to a shrinkable hemostatic patch based on a liquid crystal elastomer network lattice structure and a preparation method thereof. Background technique [0002] Medical hemostatic plaster, also known as Band-Aid, consists of a bottom layer of adhesive tape and a gauze coated with a biomedical drug dressing in the center of the surface layer, which can be pasted on the wound to stop bleeding, resist bacterial infection, and protect and repair the wound. This is currently the fastest and simplest emergency treatment strategy for trauma repair, and it requires less professional skills and environment. [0003] Existing medical hemostatic patches treat wounds based on the pharmacological functions of the medicated dressing, and the therapeutic effect depends on the efficacy of the medicated dressing. Correspondingly, its scope of application will also be limi...

AI Technical Summary

Problems solved by technology

In complex parts such as joints or wounds with special shapes, common medical hemostatic plasters cannot adhere to the wound well, and at the same time may restrict joint activities, causing inconvenience in daily production and life

The existing hemostatic patch does not have the function of health monitoring. It is necessary to remove the hemostatic patch to know the healing status of the wound

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