If I were to start up my own medical devices company, I would choose the Matrix Org Structure as I think it would have enough flexibility to work under different bosses, fast to grow, and would have the space for decision making. Since the Matrix Org would have group members from different disciplinary and functional units, it would be more beneficial for my company to have a better-produced output.
Several advantages of the Matrix Org were explained on the PMI website:
“1. Project Objectives Clear -> project objectives will be balanced with the functional organization objectives
2. Project Integration -> clear and workable mechanism for achieving project integration of subsystems
3. Efficient Use of Resources -> efficient use of tools, appliances, equipment, etc.
4. Information Flow -> Horizontal & Vertical flow
5. Retention of Disciplinary Teams -> team collaborations leads to increased innovation and productive output
6. High Morale -> worker in the matrix responds first to the morale-building experience of working on a successful project resulting in visible achievements
7. Development of Project Managers -> promising candidates can easily be spotted in the multidisciplinary project environment
8. Project Shutdown -> it is not a painful event to terminate a project”

Reference:
https://www.pmi.org/learning/library/matrix-organization-structure-reason-evolution-1837