I want to export haemostatic agent which falls in the class 3 medical
device to India which is approved by CE (European Community) and (FDA
approved to export only) outside the USA.
I want to know with whom and how to register this class 3 medical
device in India so we can start exporting to India?

Hi ! You need to get in touch with an agency in india who is
interested in importing this item to india. You do not need any
registration in india as the item falls under open general license as
per indian law. The indian partner can start selling it as soon as the
consignment arrives. He will need to pay the required duties / taxes
as per the local law.
If you wish to have further details , i can help you out in the
process for a consultation fees, since i have a 20 years experience in
the same field with world's top MNC.