I’m a small (5’1″) male in my early 30s.

My pectus excavatum appears mild, with what I assume is a relatively low Haller Index, but symptoms of pain and compression are moderate to severe.

The sunken area is localised to the lower sternum, and I have some flaring of the lower ribs.

What type of Vacuum Bell would be most suitable for a person with my build and form of the condition?