The covered dialysis model is a simulation teaching aid used for hemodialysis and related technical training. During the operation process, there are several precautions that need to be particularly emphasized to ensure the training effect and the service life of the equipment.

First of all, before use, carefully inspect whether the overall structure of the model is intact, especially whether there is any damage or leakage in the dialysis pipeline, puncture site and membrane material. If any abnormality is detected, use should be stopped immediately and maintenance carried out. Before operation, the puncture site must be disinfected strictly in accordance with the requirements to keep it clean and avoid bacterial growth or material aging due to repeated training.

Secondly, during the puncture operation, attention should be paid to the control of the Angle and depth to avoid excessive force that may cause damage to the model membrane surface. The needle should be matched with the model. After use, it should be recycled in time to avoid repeated use, which may cause the perforation on the membrane surface to expand or the model to be scrapped. At the same time, when conducting dialysis fluid infusion or simulating blood circulation, attention should be paid to the sealing of the pipe interfaces to ensure smooth fluid flow and avoid affecting the teaching demonstration effect due to leakage.

Secondly, during the dialysis training process, excessive force should be avoided from squeezing for a long time or repeatedly puncturing the same area, as this will shorten the service life of the model. It is suggested that the number of operations be reasonably allocated based on the number of trainees to extend the model's usage cycle.

Finally, after the operation is completed, the pipelines and membrane surfaces should be cleaned in a timely manner, kept dry for storage, and protected from high temperatures, direct sunlight or humid environments. Proper maintenance not only ensures the simulation degree of the model but also guarantees its stability in long-term teaching.