Scar-removing microneedle patch

Abstract

The invention relates to a scar-removing microneedle patch, which is characterized in that a microneedle array is arranged at the bottom end of a microneedle base layer and used for being punctured into skin; the top end of the microneedle base layer and the bottom end of a middle layer are integrally formed; the microneedle base layer, the middle layer and the microneedle array are made of degradable gel; sustained-release medicine is added into the degradable gel; the top end of the middle layer is fixedly connected with the bottom end of a top layer, a unidirectional guide layer is arranged in the top layer; the unidirectional guide layer has expansibility in one direction and has no expansibility in the other direction; and the direction without expansibility is perpendicular to the scar direction. The scar-removing microneedle patch in the invention can fix the skin and prevent the scar from becoming larger; and the medicine is slowly released into the skin and is used for avoiding or eliminating scars.

Description

technical field [0001] The invention relates to a microneedle patch for removing scars. Background technique [0002] Human administration methods include oral administration and skin administration. Injection is a representative method of drug delivery through the skin, but injection is accompanied by pain and there is a possibility of infection with other diseases. Therefore, injections are an undesirable mode of administration for many people. In recent years, the technology of painless drug delivery using microneedle patches has attracted attention. [0003] The microneedle patch is made of degradable gel, and slow-release drugs are added to the degradable gel. The degradable gel that can be metabolized and absorbed after being dissolved in the body is used as a raw material to prepare microneedles. The degradable gel has relatively high elasticity and It is in all directions, and the position where the skin has scars is mainly because it is easy to split the opening ...

AI Technical Summary

Problems solved by technology

[0003] The microneedle patch is made of degradable gel, and slow-release drugs are added to the degradable gel. The degradable gel that can be metabolized and absorbed after being dissolved in the body is used as a raw material to prepare microneedles. The degradable gel has relatively high elasticity and It is in all directions, and the position where the skin has scars is mainly because it is easy to split the opening of the scar and cause skin relaxation. Wound repair usually uses methods such as sutures, medical dressings, bandages, etc., and these methods use The drug has a single effect, the dressing is non-degradable, and the dressing needs to be replaced many times, which is not conducive to wound healing, and the treatment effect needs to be improved

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