Three Ball Spirometer: A Practical Respiratory Training Device

A three-ball spirometer is a portable, medical-grade breathing training device widely used for lung function rehabilitation and daily respiratory exercise. Featuring three transparent chambers with colored floating balls of different resistance levels, it relies on airflow resistance principles to guide standardized deep breathing training without electricity or complex operation.

During use, users inhale steadily through the mouthpiece. The three balls rise synchronously with continuous, slow inhalation, providing intuitive visual feedback of breathing intensity and airflow stability. Each ball corresponds to a graded resistance, enabling progressive training for users with varying lung capacities, from beginners to postoperative rehabilitation patients.

This device effectively strengthens respiratory muscle strength and endurance, improves pulmonary ventilation and oxygen utilization, and reduces postoperative pulmonary complications. Compact, easy to operate and carry, it suits postoperative recovery crowds, asthma and COPD patients, as well as office workers and sports enthusiasts, serving as a simple and scientific tool to maintain respiratory health.