▎ 摘　　要

NOVELTY - The method involves manufacturing the glass nozzle with inner diameter of 10-150 mu m. The glass nozzle is installed on the nozzle. The thermoplastic polymer particles and carbon material powder are printed, initialized and combined to make a uniform mixture according to the proportion. The printing work is started. The electric field is formed between the electric field generating electrode and the receiving substrate. The nozzle moves upwards a layer thickness of the distance, on the basis of the first layer structure of the printing. The printing of the set layer number is realized. The printed conductive polymer biological support, optionally, post-processing as needed is taken off, after printing. USE - Self-excitation electrostatic field driven melt injection three-dimensional printing-based method for preparing conductive biological support. ADVANTAGE - The method overcomes the problem that the micro-screw device is electrified and short circuit, realizes stable printing under high precision condition for obtaining better printing quality, ensures the concentric with the nozzle by limiting the length of the conductive patch and then winding, ensures the accuracy of the experiment, improves the stability of the experiment, and ensures the same length of the needle neck when manufacturing the glass needle to reach the purpose of keeping stable distance between the extraction electrode and the substrate in the experiment. The influence of the charged jet accumulation on the electric field is reduced. The stability and reliability of the printing process are ensured. The extraction electrode is simple. The micro-scale biological support has excellent conductivity by adding conductive nano-material in the thermoplastic polymer, and provides a new solution for electrical stimulation repair of spinal cord injury. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a printing apparatus used in self-excitation electrostatic field driven melt injection three-dimensional printing-based method for preparing conductive biological support. Base (1) Y-axis working table (3) Printing nozzle (5) Printing platform (7) Control module (9)