Fig. 6From: A novel three-dimensional printed vacuum bell for pectus excavatum treatment: a preliminary studyAn example of typical patients using 3D printed vacuum and having demonstrated significant improvement of the depression of the front chest. a: Started to use the 3D printed VB; b: 3 months after use; c: 9 months after use and stopped VB therapy; d: 3 months after termination of VB useBack to article page