A drop-type light-curing follow-up printing system and method

Abstract

The invention discloses a drop-type light-curing follow-up printing system and method, including a two-dimensional mobile platform, a substrate, a light source, a focusing lens, a light-curing liquid supply system, a solenoid valve nozzle, and a control device for controlling the solenoid valve nozzle. device, and a one-dimensional mobile platform for driving the substrate to move in the vertical direction; the substrate is fixed on the one-dimensional mobile platform, the light source, focusing lens and solenoid valve nozzle are fixed on the two-dimensional mobile platform, and the light emitted by the light source The light spot formed after focusing by the focusing lens is located on the substrate, and the light spot is located directly below the liquid outlet of the solenoid valve nozzle, and the liquid inlet of the solenoid valve nozzle is connected with the liquid outlet of the photocuring liquid supply system; the light emitted by the light source The wavelength of is the same as the wavelength of the light required for the curing of the photo-curable liquid in the photo-curable liquid supply system. The invention can realize precise positioning of cells and light-cured liquid in three-dimensional space, ensures that materials are not polluted, and saves materials at the same time.

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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