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What are the types of micro derma roller?

66 Published by admin Dec 08,2018

The materials for manufacturing micro needle roller are mainly metals, silicon, silicon dioxide and biodegradable polymers. Microneedles of different materials have different characteristics and uses.

1, metal micro needle roller
 Stainless steel, titanium and nickel are commonly used materials for the manufacture of metal microneedling. Various practical metal microneedles can be prepared by laser cutting, etching, electroplating or ultra-precision machining. The metal micro needle roller is low in cost and simple in process, and is suitable for mass production. The needle tip is sharp and has a large hardness. It is easy to pierce the skin and is not easy to break in the skin, and is harmless to the human body. It is a good material for manufacturing microneedles. Metal micro derma roller can also be prepared by fully or partially plating metal on a polymer or silicon micro-mold.micro needle roller factory/beauty care2, silicon and silicon dioxide micro needle roller
Silicon and silica materials are commonly used materials for the manufacture of micro needle roller, have good sensing properties and electromechanical properties, and their micromachining process has matured. It is easy to mass-produce, but it has higher processing cost than metal micro-needle, and it is easy to break and stay in the skin, which is a factor that restricts its development. Sharp and thin silicon microneedles can reduce the discomfort of the human body, but the surface of the silicon material will adsorb proteins, which will promote the adhesion of white blood cells and micro needle roller. The penetrating area may produce a stress reaction, so the silicon microneedles cannot be directly used. For human treatment, it needs to be modified on its surface, such as a thin layer of xylene to improve its biocompatibility. In addition, the hardness of the silicon microneedles is stronger than that of other materials, but it is also brittle and easy to break.micro needle roller factory/beauty care3, the convergence of micro needle roller
In order to increase the safety of microneedles, biodegradable polymer micro needle roller have become another direction in the development of microneedles. Polymer microneedles have good biocompatibility and biodegradability, low cost, and new polymer materials are emerging in an endless stream. Polymer microneedles will have good research and application prospects. However, compared with metal derma needle and silicon microneedles, the strength of such microneedles is poor, and plastic deformation occurs under certain pressure. It is difficult to pierce the skin, and needs to be improved in material selection and processing.

      In summary, although silicon materials are widely used and mature in processing methods, they are relatively expensive, brittle and non-biocompatible, while many metals are much cheaper, are strong and biocompatible, are not expensive, and are biocompatible. Degradation and treatment are simple, but its mechanical properties are not as good as the first two. Therefore, metal and polymer derma needle have a more promising future.

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