How these medical devices are classified?

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Robert Boer

You may find this Wikipedia section and following section helpful (if only to clarify your question):

https://en.wikipedia.org/wiki/Medical_device#Definition

Rakesh Kumar

You may find a brief classification of biomedical implants/devices:

https://www.dl.begellhouse.com/journals/1bef42082d7a0fdf,131c75161ccf6075,299c9c9d03934ca9.html

Kumar Chokalingam

You may find some answers here

Article Interpretation of regulatory factors for 3D printing at hosp...

Vijaya sankar kn

Thank you all.