Skin in-situ printing mechanism

Abstract

The invention provides a skin in-situ printing mechanism, which is used for coating biogel and a cross-linking agent on a predetermined part of a human body, and is characterized by comprising a printing head device, a coating power device and a three-axis moving device, wherein the printing head device is used for coating the biogel and the cross-linking agent on the predetermined part and is provided with a bracket unit and a sprayer unit arranged on the bracket unit; the coating power device is used for providing power for extruding the biogel and the cross-linking agent out of the sprayerunit; and the three-axis moving device is used for driving the printing head device to move to a predetermined part; the sprayer unit is provided with a first sprayer assembly and a second sprayer assembly, the first sprayer assembly comprises a first barrel and a first needle head, the second sprayer assembly comprises a second barrel and a second needle head, the second barrel and the second needle head surround the outer sides of the first barrel and the first needle head respectively, a first gap is formed with the first barrel, a second gap is formed with the first needle head, the firstgap is communicated with the second gap, and the lower end of the second needle head is lower than that of the first needle head.

Description

technical field [0001] The invention belongs to the field of medical equipment and relates to a skin in-situ printing mechanism. Background technique [0002] Skin defect refers to the loss of skin caused by burns, mechanical damage and other reasons. If the damage depth of the skin defect reaches the dermis and below, the human body cannot fully regenerate, but heals through fibroblast growth and other methods, and scar tissue is formed in the defect after healing. The color and shape of scar tissue and normal skin are quite different, which is extremely unsightly, so it is easy to bring psychological burden to patients; not only that, scar tissue has poor elasticity, lack of pores, and poor air permeability, which is also easy to cause discomfort to patients feel. Therefore, when treating skin defects, try to allow the skin to heal normally and avoid scar tissue. [0003] Clinically, stretching the skin around the damaged part or transplanting skin from other parts is o...

AI Technical Summary

Problems solved by technology

However, such a method requires that the coating speed must be very fast, otherwise the remaining bio-glue will solidify and cannot continue to coat; Multiple mixing and coatings are required, which is not only tedious and laborious, but also increases the risk of contamination of the skin layer cells in the bioglue

[0005] If the bio-glue and cross-linking agent are coated separately, the bio-glue will be exposed to light and air in advance, which increases the risk of contamination of the skin layer cells in the bio-glue. The mixing degree of the joint agent is also difficult to grasp

[0006] Therefore, how to achieve the mixing and coating of bioglue and cross-linking agent becomes the key to successfully printing skin, and the existing technology can not solve this key problem well.

[0007] In addition, it is difficult to accurately control the direction of coating in the existing technology, so the printing accuracy is also very low

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