A pneumatic multi -way control system and method of a multi -noble biological 3D printing system

Abstract

The invention designs a pneumatic multi-channel control system and method of a multi-nozzle biological 3D printing system, and relates to the field of biological 3D printing. The system includes an air source processing module, an air pressure control module, a pressure supply and pressure relief module, and a feedback control module. Among them, the air source processing module realizes the functions of providing stable air pressure, step-by-step filtration, drying and pressure regulation. The air pressure control module realizes multi-channel air pressure control through the proportional pressure valve group, which is independent of each other and does not interfere with each other. The pressure supply and pressure relief module adopts two groups The high-speed switch valve realizes precise pressure supply and pressure relief functions respectively. The feedback control module controls the multi-function signal acquisition card through the host computer to collect and compare the signals of the pressure transmitter, and finally realize the control of the gas pressure. The invention adopts multi-channel pneumatic independent control, which can ensure the real-time start and stop of multi-nozzle extrusion, timely pressure relief, high-speed and precision in the process of biological extrusion printing, provides technical guarantee for multi-nozzle extrusion printing biological experiments, and has universality .

Description

technical field [0001] The invention relates to the technical field of biological 3D printing in tissue engineering, in particular to a pneumatic multi-channel control system and method of a multi-nozzle biological 3D printing system. Background technique [0002] Every year, an extremely large number of people in the world suffer from various types of injuries, resulting in tissue defects, or some serious diseases that require organ transplantation, resulting in a huge demand for tissue and organ repair. Especially in the field of end-stage organ and tissue repair, human tissue organ transplantation is the most common treatment method available. However, due to the shortage of tissue and organ donors, immune rejection of recipients, and multiple restrictions such as religion, culture, and policy, there is an urgent need to develop alternatives to tissue and organ donors. The proposal of tissue engineering has opened up a new way to solve the above problems. Tissue enginee...

AI Technical Summary

Problems solved by technology

However, the tissue structure of human organs is complex and the material components are diverse. In order to meet the manufacturing needs of large-scale and complex tissues and organs, and accurately construct transplantable organ tissues, especially for tissues and organs with obvious unit structures such as the liver, the 3D printing platform needs to meet Requirements for coordinated printing of multi-material and multi-nozzle

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