Vacuum bell therapy can be used as an alternative to surgery in the treatment of pectus excavatum. Applied as a negative pressure method, vacuum bell therapy can yield positive results in suitable patients.

Vacuum therapy involves placing a soft apparatus on the sunken anterior portion of the chest and applying negative pressure using a system similar to a blood pressure device, thereby pulling the chest wall upwards. Patients apply this two or three times a day for 45 minutes each time. It is most effective for mild pectus excavatum in patients under 18 years of age, while bones are still pliable. Patients using a vacuum bell should also have regular check-ups with their doctor every three months.