How to rank for similar kind of product models?

Hi, SEO pros,

We have a client in the online medical equipment niche. Currently, they are ranking on the 1st page of google for "contec patient monitor A130" model but they want to rank on 1st for "contec patient monitor B220" model.

How would you optimise the B220 model page so that it replaces the A130 model and ranks on 1st page.