Device Classes I vs II: Health Canada Rules for Supplies

When you shop for medical supplies for a Canadian clinic or long-term care home, “Class I” and “Class II” describe how Health Canada classifies a device’s risk — not its quality or importance. Class I covers lower-risk, non-sterile supplies that generally need no licence for the device itself, while Class II covers moderate-risk items such as sterile single-use devices that need a Medical Device Licence (MDL) before sale in Canada. In both classes the importer or seller also needs a Medical Device Establishment Licence (MDEL), so the difference helps you read “regulated” on product pages accurately.

How Health Canada sorts devices into four risk classes

Under the Medical Devices Regulations (SOR/98-282), Health Canada assigns every device sold in Canada to one of four risk classes, I to IV. The class depends on the device’s design, how long it contacts the body, and the harm a failure could cause. Most clinic and long-term care consumables fall into Class I or II; invasive, implantable and life-supporting devices land in Classes III and IV with stricter requirements.

Class I: lower-risk, non-sterile supplies

Class I covers low-risk items with brief, limited body contact — non-sterile exam table paper, arm slings and non-sterile tongue depressors, for example. Here is the part that surprises many purchasing teams: Class I devices generally need no Medical Device Licence for the device itself.

That does not make them unregulated. Any Canadian business that imports or sells a medical device must hold a Medical Device Establishment Licence (MDEL), even when no per-device licence exists; a “licensed supplier” badge usually refers to this establishment licence.

Class II: moderate risk — and why “sterile” changes the class

Sell that same tongue depressor sterile, and its risk profile changes: the sterility claim promises the device reaches the user free of viable microorganisms, and if that promise fails, a patient can be exposed to infection. Health Canada therefore treats sterile single-use devices as Class II, even when the identical product sold non-sterile sits in Class I. Sterile tongue depressors, sterile gauze sponges and condoms are common Class II examples.

Before a Class II device can be sold in Canada, the manufacturer must hold a Medical Device Licence (MDL) issued by Health Canada, and the seller needs an MDEL too. The MDL number is printed on the label; on our CliniEco sterile tongue depressors (birch wood, 100-pack), it is on the carton.

Sterile gauze sponges follow the same rule — they are Class II devices with an MDL, as with our CliniEco sterile gauze sponges (200-pack). A non-sterile roll of the same dressing would typically be Class I.

What a buyer should look for

• Expect an MDL number on sterile items. The MDL number belongs on the label or outer carton of any sterile device sold in Canada; no number visible means it is time to ask why.
• Ask for both credentials — the supplier’s MDEL and, for sterile Class II devices, the device’s MDL number. A reputable distributor shares both without hesitation.
• Keep sterile and non-sterile versions separate in your inventory, and note MDL numbers on purchase orders so your audit trail is easy to follow at inspection time.

FAQ

Why is a sterile tongue depressor Class II when the non-sterile version is Class I?

If a sterile device fails, a patient can be exposed to infection, which is why Health Canada treats sterile single-use devices as moderate risk. The non-sterile version carries far less of that risk and stays in Class I.

If a Class I product needs no MDL, is it regulated at all?

Yes — the importer or seller still needs an MDEL, and the device must still follow labelling, quality and recall-reporting rules. “No MDL” does not mean “no rules.”

The supplier says they hold an MDEL — does that mean the product is licensed?

Not by itself. An MDEL licenses the establishment; an MDL licenses a specific device. For sterile Class II items you want both — an MDL number on the product and an MDEL behind the company you buy from.

How can I check a supplier’s licences quickly?

Ask for their MDEL number and the MDL for each sterile device you are considering, then confirm both against Health Canada’s medical devices page, which links the official licence databases: Medical devices — Health Canada.

Related reading: learn more about Canadian medical procurement in our business hub.

see our related pillar guide.