Supplier to a medical device company

Yes, this requirement is mandatory for all companies that have implemented ISO 13485. But, of course, you will adapt it to your situation. This means that you will have as a part of the medical device file:

a) a general description of the medical device, what is its purpose - how it is a part of the final medical device, how you label that device, and how it is implemented in the final medical device (if you know it)

b) specifications for the product

c) specifications or procedures for manufacturing, packaging, storage, handling, and distribution

d) procedures for measuring and monitoring

e) as appropriate, requirements for installation

f) as appropriate, procedures for servicing.

So, you will be concentrating only on your device, not the final medical device.