The operation specification of the infant bone marrow puncture model aims to provide medical staff with a safe and standardized training platform to master the technique of infant and toddler bone marrow puncture. This model is usually designed in proportion to the lower limbs or ilium of infants. Its surface is covered with simulated skin and soft tissues, and the interior is equipped with realistic bone structures and bone marrow cavities, featuring distinct tactile feedback.

When performing the operation, trainees should first carry out routine hand hygiene and aseptic preparations, wear gloves, check the puncture site and determine the bony markers. Select an appropriate puncture needle and, while keeping it fixed, insert it vertically or slightly at an Angle. The needle tip will pass through the skin and soft tissue until it enters the bone marrow cavity, which can provide a distinct "breakthrough sensation".

If the aspiration goes smoothly and simulated bone marrow fluid can be seen, it indicates that the operation was successful. Then, liquid medicine injection or further training can be carried out. During the operation, it is necessary to maintain sterility and avoid repeatedly puncturing the same point to extend the service life of the model. This specification, through systematic training, enables trainees to master the key points and touch of puncture, enhance the accuracy and proficiency of practical operations, and thereby better ensure the safety and treatment effect of infant patients in clinical practice.