大学毕业设计作品，目的在于提高医护人员操作效率，帮助患者轻松吸痰的设计，仍存在许多缺陷，望指正。
There are still many flaws in the design of the university graduation project, which aims to improve the operation efficiency of medical staff and help patients to suck sputum easily. I hope to correct it.
