Liquid dripping type photo-curing following printing system and liquid dripping type photo-curing following printing method

Abstract

The invention discloses a liquid dripping type photo-curing following printing system and a liquid dripping type photo-curing following printing method. The liquid dripping type photo-curing following printing system comprises a two-dimensional movable platform, a substrate, a light source, a focusing lens, a photo-curing liquid supplying system, an electromagnetic valve sprayer, a controller and a one-dimensional movable platform, wherein the controller is used for controlling the electromagnetic valve sprayer; the one-dimensional movable platform is used for driving the substrate to move in the vertical direction; the substrate is fixed on the one-dimensional movable platform; the light source, the focusing lens and the electromagnetic valve sprayer are fixed on a two-dimensional movable platform; light emitted from the light source is focused via the focusing lens to form a light spot; the light spot is positioned on the substrate and right below a liquid outlet of the electromagnetic valve sprayer; a liquid inlet of the electromagnetic valve sprayer is communicated with a liquid outlet of the photo-curing liquid supplying system; and the wavelength of the light emitted from the light source is the same with the wavelength of light required for curing of photo-curing liquid in the photo-curing liquid supplying system. By the liquid dripping type photo-curing following printing system, cells and photo-curing liquid can be precisely positioned in three-dimensional space, materials are not polluted, and materials are saved.

Description

technical field [0001] The invention belongs to the field of 3D printing and tissue engineering, and relates to a drop-type photocuring follow-up printing system and method. Background technique [0002] Artificial tissues or organs have been rapidly developed in the past three decades as a solution to the problem of few sources in organ transplantation. Since tissues or organs contain a variety of cells, different materials contain different cells and the same material contains different cells in the printing process of artificial tissues or organs. Not only that, but in fact there are many substances that need to be chemically synthesized under light in biological organisms. Therefore, there is a wide demand for materials such as photocurable hydrogels that are easy to encapsulate cells and have a watery environment suitable for cell growth and proliferation in artificial tissues or organs. Existing photocuring methods are suitable for manufacturing complex structural pa...

AI Technical Summary

Problems solved by technology

However, since the photocurable material is placed in the liquid tank, it is easy to cause material pollution and waste when applied to bioprinting

Although the photocuring molding technology of various materials has also been developed at present, the liquid tank needs to be replaced many times when printing a variety of different photocuring materials, resulting in a long printing cycle, which makes it difficult to control cross-contamination

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