This is the 13117th most frequent Russian word.
медицинскими
"Медицинскими" means "medical" (instrumental plural form).
In this sentence, "медицинскими" is used as an adjective to describe the nature of the products, indicating they are related to medicine or healthcare.
Эти препараты являются медицинскими средствами.
These drugs are medical products.
Here, "медицинскими" describes the type of devices, specifying their application in the medical field.
Оборудование оказалось медицинскими приборами.
The equipment turned out to be medical devices.
"Медицинскими" indicates that the books are related to medicine, providing information related to the healthcare profession.