No recall notification is required if affected product was not manufactured in, sold in or imported into Canada. Now that you've sent a notification you should be contacted by the inspectorate. The assigned officer will help you resolve the closure if the notification was not necessary.
You mentioned MDR. If you mean a report similar to the FDA Medical Device Report, its called MPR (Mandatory Problem Reporting) in Canada. This type of report is required for incidents that involve actual or potential death or seriuos injury. If the event(s) happened outside Canada, but the product is sold ino Canada, you would only need to report if the manufacturer or a foreign regulator determined corrective action is required as a result of the incident.
Alternately, you can follow up with the appropriate regional office (based on your geographic location) to resolve. The contact list is here:
Guide to Recall of Medical Devices (GUI-0054) - Canada.ca
In case you were not aware, here is a trove of information on post market reporting issues:
Medical Devices - Canada.ca