Before 3D Printing Medical Devices can be used for clinical applications, they must first get approval from FDA. On December 4, 2017, the FDA issued a guidance to help speed up the approval process for companies seeking the approval. Additionally, there were Research and Development tax credits that a company can seek to offset 4-7% of the cost associated with testing, process improvement, and production. To receive the research and development benefits, the company must meet the four eligibility criteria set up.
Source: http://www.rdtaxsavers.com/