According to Dr. Yurai's query, medical high-pressure airsoft guns are medical devices that are commonly used to treat a variety of ailments. However, medical high-pressure air guns have a limited lifespan, usually only 5 years. This is because high-pressure air guns are affected by various factors during use, such as wear and tear, contamination, corrosion, etc. These factors can lead to a decline in the performance of the equipment, and may even cause infections or other medical accidents. Therefore, in order to ensure the safety of patients and the effectiveness of the equipment, medical high-pressure air guns must be replaced regularly. Generally speaking, the medical high-pressure air guns have a service life of 5 years, but the specific service life also needs to be determined according to the specific conditions of the equipment and the frequency of use.